Bell&howell 614cb Operating instructions

Disclaimer

This scanned document is provided as a courtesy. We make

no representation for its accuracy. It is for use by qualified

personnel only. There are high voltage and mechanical

hazards present in this equipment. Do not attempt repair

unless you are fully aware of the safety precautions to be

taken. Use this information at your own risk.

www.paulivester.com

TABLE

OF

CONTENTS

Paragraph

INTRODUCTION

SPECIFICATION

DATA

DISASSEMBLY

PROCEDURE

Page

3

4

1.

Special

Tools

4

3.

Removal

of

Major

Components

4

11,

Feed

-Reel

--Arm

Assembly

5

-

Take-up

Reel

Arm

Assembly

5

13.

Switch

Plate

Assembly

5

14,

Sound

Head

-

614CB

Only

5

(Refer

to

para.

29

for

614CBM

and

CBRM

sound

head)

15.

Jockey

Roller

Assembly

6

16.

Impedance

Roller

Assembly

6

17,

Stabilizer

Housing

Assembly

6

18,

Universal

Drive

Motor

6

(Refer

to

para.

92

for

synchronous

motor

repair)

19.

Drive

Motor

Gear

Housing

7

20,

Blower

Motor

Assembly

7

21,

Rear

Mechanism

Plate

7

22.

Feed

and

Take-up

Pulleys

7

23,

Aperture

Plate

Assembly

7

24..

Lens

Holder

Assembly

7

25,

Lens

Mounting

Assembly

7

26,

Sprockets,

Sprocket

Guards

and_Gears

7

27,

Loopsetter

Adjusting

Assembly

-

8

28.

Shutter

and

Shuttle

Mechanism

8

29.

Sound

Head

-

614CBM

and

CBRM

8

30,

Projector

Case

9

31.

Amplifier

and

Speaker

9

CLEANING

AND

REPAIR

9

REASSEMBLY

PROCEDURE

10

35.

Feed

Reel

Arm

Assembly

10

36,

Take-up

Reel

Arm

Assembly

10

37,

Jockey

Roller

Assembly

10

38,

Impedance

Roller

Assembly'

10

39.

Stabilizer

Housing

Assembly

10

40,

Sound

Head

-

614

CB

only

11

(Refer

to

para.

51

for

614CBM

and

CBRM

sound

head)

41.

Drive

Motor

Gear

Housing

.

.. . . . . . . . . .

•

. . . . . .

12

42,

Universal

Drive

Motor

.,.

. .

-

. . . . .

.‘„

. . . . . .

•

12

(Refer

to

para.

92

for

synchronous

motor

repair)

43.

Blower

Motor

Assembly

12

44.

Rear

Mechanism

Plate

12

45,

Feed

and

Take-up

Pulleys,

13

46,

Aperture

Plate

Assembly

13

47,

Lens

Holder

Assembly

13

48,

Loopsetter

Adjusting

Assembly

13

49,

Sprockets,

Sprocket

Guards

and

Gears

13

50.

Shutter

and

Shuttle

Mechanism

S

14

51,

Sound

Head

-

614

CBM

and

CBRM

15

52.

Installation

of

Major

Components

16

63,

Adjusting

Shuttle

and

Aperture

Plate

Mounting

Bracket

...... .

18

64,

Adjusting

Film

Perforation

Clearance

19

65,

Synchronizing

Lower

Film

Sprockets

. . . . . . . . . . . . . . .

9

,

19

1

Paragraph

Page

66.

Film

Take-up

Tension

Adjustment

19

67.

Loopsetter

Adjusting

Assembly

Adjustment

20

TEST

PROCEDURE

21

68.

Localizing

Common

Sound

Troubles

21

72.

Amplifier

Trouble

Analysis

23

79.

Localizing

Loudspeaker

Troubles

24

80.

Projector

Set

Characteristics

Tests

24

81.

Sound

Optical

System

Alinement

Tests

24

87.

Checking

Photocell

Output

26

Table

I.

Projector

Circuit

Voltages

27

Table

II.

Tube

and

Output

Transformer

Measurements

27

Table

HI.

Amplifier

Trouble

Analysis

Chart

29

Table

IV.

D

-C

Supply

Voltage

-Drop

Measurements

32

Table

V.

D

-C

Resistance

Measurements

32

Table

VI.

A

-C

Voltage

Measurements

32

Table

VII.

Projector

Characteristics

Tests

33

Table

VIII.

Amplifier

Characteristics

Tests

36

Table

IX.

Loudspeaker

Characteristics

Tests

38

TROUBLE

SHOOTING

CHART

46

AUTHORIZED

MODIFICATION

KITS

55

88.

Installing

Hour

Counter

Kit

55

89.

Counter

Drive

Mechanism

Repair

55

90.

Installing

48

-Frequency

Shutter

Kit

56

91.

Converting

from

Universal

to

Synchronous

Drive

Motor

56

92.

Synchronous

Drive

Motor

Repair

57

DESIGN

614CD

MAINTENANCE

58

***

.

P

tttittts

•4

4.4

.4•

fttte

(

Figure

1.

Design

614

CB

Projector

—

Overall

View

2

This

manual

has

been

prepared

to

aid

in

serv-

icing

the

Bell

&

Howell

Design

614

16

-mm

Projector.

Complete

instructions

for

the

disassembly,

cleaning,

repair,

reassembly

and

adjustment

of

the

projector

are

given

in

a

step-by-step

fashion.

An

illustrated

parts

catalog

section

is

included

at

the

rear

of

the

manual

to

identify

replacement

parts

for

ordering

purposes.

The

exploded

view

illustrations

in

the

parts

catalog

section

have

been

indexed

in

order

of

disassembly.

The

serviceman

must

use

his

own

judgment

in

eli-

minating

unnecessary

steps

of

disassembly

when

making

certain

definite

repairs.

Four

models

of

the

projector

are

covered

in

this

book

—

614CB,

614CBM,

614CBRM

and

614CD.

The

614CD

is

a

commercial

version

of

the

projector

pre-

sently

being

supplied

to

the

Armed

Forces.

Although

all

four

projectors

are

very

similar

in

design

and

construction,

the

614CD

is

outwardly

distinguished

by

its

twin

line

'fuses

(top

front

of

projector

case),

fabric

drive

belts

with

adjustable

tension

rollers,

lifetime

lubrication

system

and

newly

designed

case

legs.

Except

when

specifically

noted,

the

general

repair.

instructions

contained

herein

will

apply

to

all

four

models,

with

minor

differences

illustrated

in

the

Parts

Catalog

exploded

views

by

means

of

insets.

Wiring

schematics

and

the

more

complicated

repairs

and

ad-

justments

which

are

applicable

only

to

the

614CD

will

be

found

in

the

addendum

beginning

on

page

58.

The

quality

of

service

work

performed

will

de-

pend,

to

a

large

extent,

upon

the

ability

and

in-

genuity

of

the

serviceman.

Be

sure

to

use

the

proper

tools

during

actual

disassembly

and

reassembly

pro-

cedures,

and

be

careful

not

to

scratch

or

mar

the

equipment.

During

disassembly

of

the

equipment,

observe

and

remember

the

manner

in

which

each

part

is

installed.

When

a

part

has

been

removed,

reinstall

its

attaching

screws

into

their

tapped

holes

to

prevent

loss

and

mix-up.

Take

particular

care

when

reassembling

the

pro-

jector.

The

customer

expects

his

equipment

to

look

and

operate

like

new

when

it

is

returned.

Touch

up

marred

surfaces

with

matching

paint

(B

-H

SPEC

No.

1148).

LUBRIC

ANTS.

Due

to

the

nature

of

the

design

of

these

pro-

jectors,

it

is

imperative

that

only

the

following

lubricants

be

used:

Oil

—

Bell

&

Howell

Stock

No.

611753

Grease

—

Standard

Oil

"Stanolith

No.

42"

Internal

lubrication

for

the

614CB,

614CBM

and

614CBRM

projectors

is

supplied

through

a

one

-point

feed

lubrication

system.

Oil

is

applied

to

the

central

oil

well

cup

on

top

of

the

projector

case

and

is

fed

through

oil

tubing

to

all

bearings

and

to

the

inter-

mittent

mechanism

reservoir.

In

614CD

projectors,

the

oil

well

cup

and

tubing

have

been

removed.

A

felt

pad

below

the

shutter

and

shuttle

camshafts

is

satura-

ted

with

oil

and

feeds

all

parts

of

the

intermittent

mechanism

through

a

system

of

felt

wicks.

Refer

to

the

addendum

sheets

beginning

on

page

58

for

wick

re-

placement.

CAUTION:

Before

returning

a

repaired

614CB,

614CBM

or

614CBRM

projector

to

customer,

be

sure

to

fill

the

oil

well

cup

with

4

cc

of

oil

and

caution

customer

to

check

oil

level

before

operation.

SPECIFICATION

DATA

Film

size

16

-mm

Film

reel

capacity

2000

ft.

Film

speed

(CB

and

CBM)

16

and

24

fps

Film

speed

(CBRM

and

CD)

24

fps

Power

supply

105-129

volts,

50-60

cycles

Power

consumption

1300

watts

Projector

lamp

(25

hr.

life)

. . .

1000

watt,

115

-volt

Exciter

lamp

6

-volt,

1

-amp

Threading,

lamp

120

-volt,

6

-watt

Photocell

(614CB,

CBM,

CBRM)

. .

Lead

sulphide

Photocell

(614CD)

germanium

diode

Projector

fuse

(1

req'd)

15

amp

Amplifier

fuse(2

req'd

for

614CD)0.8

amp,

slow

-blow

Drive

motor

(CB,

CBM,

and

CD)

. .

universal

type

with

centrifugal

governor

Drive

motor

(CBRM)

synchronous

type

Ventilation

24

-blade,

motor

driven,

3

in.

diam.

rotor

Amplifier

input

Power

output

Sound

head

output

Tube

complement

0.4

volts

8

watts

high

impedance

(projector

amplifier):

(2)

12AX7,

(2)

6x4,

and

(3)

6AQ5

Tube

complement

(record

amplifier):

(2)

12AX7,

(1)

6x4,

(3)

12AU7

Overall

dimensions,

complete

projector:

14-1/2

in.

high,

12-1/8

in.

wide,

16-1/4

in.

long

Approxithate

weight

48

lbs.

3

naiddeApteev

Am

-acne

1.

SPECIAL

TOOLS.

The

special

tools

illustrated

in

figure

2

are

re-

quired

to

perform

the

overhaul

procedures

outlined

in

this

handbook.

Refer

to

the

key

to

figure

2

for

proper

part

number

and

nomenclature

of

tools.

2.

GENERAL

OVERHAUL

INSTRUCTIONS.

The

following

procedures

provide

for

the

com-

plete

disassembly

of

the

projector,

with

each

of

its

major

components

treated

separately.

Before

per-

forming

all

of

the

steps

in

the

disassembly

sequence,

first

attempt

to

localize

the

trouble

by

analyzing

the

customer's

report

with

reference

to

the

trouble

shoot-

ing

chart,

the

amplifier

trouble

analysis

chart

(Table

III)

and

the

equipment

characteristics

tests

(Tables

VII,

VIII

and

DC):

If

a

complete

overhaul

of

equipment

is

indicated,

perform

the

operations

specified

in

the

following

paragraphs.

Refer

to

the

exploded

views

for

disassembly

of

miscellaneous

parts.

3.

REMOVAL

OF

MAJOR

COMPONENTS.

NOTE:

Refer

to

the

projector

operation

book

for

in-

structions

pertinent

to

the

removal

of

such

items

as

the

reel

arms,

pressure

plate,

aperture

plate,

con-

denser

lens

assembly,

projection

lamp

parts,

etc.

4.

AMPLIFIER

AND

SPEAKER

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

The

amplifier

housing

is

secured

to

the

projector

case

by

six

screws

(23)

and

lock

washers

(24)

located

at

the

top,,

front

and

bottom

of

the

case

and

three

screws

(25)

and

lock

washers

(26)

which

also

serve

to

fasten

one

edge

of

the

switch

plate

(30)

to

the

amplifier

case.

Remove

these

screws

and

carefully

pull

the

amplifier

away

from

the

pro-

jector

case

until

the

leadwires

are

exposed.

Dis-

connect

leadwires

as

required,

and

separate

the

amplifier

assembly

from

the

projector

case.

5.

SWITCH

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

Remove

screws

(28),

lock

washers

(29)

and

junction

box

front

plate

(27).

Remove

screws

(33

and

34),

elastic

cam

lock

stop

nuts

(35)

and

cable

clamp

(36)

to

free

junction

box.

Unsolder

fuseholder

and

re-

ceptacle

leadwires

within

the

junction

box.

Note

wiring

harness

connections

to

various

projector

corn-

,

ponents.

Two

small,

shielded

wires

from

sound

head

assembly

must

be

disconnected

at

the

OFF

-MOTOR

-

LAMP

switch

and

unwound

from

harness.

The

ground

terminal

at

one

end

of

large,

shielded

harness

is

fastened

to

mechanism

plate

just

behind

projection

lamp

socket.

Two

leadwires

must

be

disconnected

from

the

lampholder

behind

the

junction

box.

The

5-061081-N15

■

e

5-061000-F1

o

S

-061081-N8

5-063196-N2

S

-061081-N31

5-061081-N16

e

-5-061082-N1

S

-061081-N6

S

-061020-N3

43.

-S-061020-N10

SURFACE

PLATE

(NOT

SUPPLIED)

Part

No.

Description

-,_Part

No.

Description

S

-061000-F1

Sound

optical

tool

S

-061081-N31

Sprocket

synchronizing

gage

S

-061020-N10

Master

block

and

plate

S

-061081-N6

Shuttle

alinement

gage

S

-061020-N3

Front

cam

shaft

indicator

gage

S

-061081-N8

Shutter

protrusion

gage

S

-061081-N15

Shutter

and

intermittent

gage

S

-061082-N1

Sound

drum

positioning

gage

S

-061081-N16

Sprocket

film

clearance

gage

S

-063196-N2

Aperture

guide

rail

gage

Figure

2.

Special

Service

Tools

Required.

4

lb;

two

blower

motor

leadwires

must

be

disconnected

at

the

OFF

-MOTOR

-LAMP

switch.

Remove

three

switch

plate

screws

(31)

and

lock

washers

(32),

and

carefully

lift

complete

switch

plate

assembly

(30),

with

wiring

harness,

from

projector.

6.

FRONT

AND

REAR

MECHANISM

PLATE.

(See

Parts

Catalog

figure

2.)

a.

Loosen

special

hex

nut

(13)

and

remove

loopsetter

knob

(14)

from

loopsetter

rod.

b.

Remove

flywheel

retaining

screw

(8)

and

care-

fully

remove

flywheel

(7)

from

stabilizer

shaft.

c.

Check

all

leadwires

and

cables,

loosening

any

cable

clamps

or

freeing

any

leadwire

terminals

that

might

prevent

removal

of

the

mechanism

plate.

d.

Remove

two

binding

head

screws

(16)

and

lock

washers

(17)

and

two

hex

head

screws

(26),

lock

washers

(27)

and

flat

washers

(28)

that

secure

the

mechanism

plate

at

the

four

vibration

mounts.

e.

Remove

mechanism

plate

(15)

through

the

door

side

of

the

projector

—not

through

the

amplifier

opening.

7.

DRIVE

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

6.)

Loosen

set

screw

(14)

and

remove

threading

knob

(13).

Loosen

the

two

screws

in

the

idler

roller

bracket

at

the

top

of

the

drive

motor,

and

shift

bracket

to

the

right

to

remove

tension

from

drive

chain

(24).

Disengage

chain

from

sprocket

above

motor.

Remove

four

screws

(21),

lock

washers

(22)

and

plain

washers

(23),

supporting

the

drive

motor

to

prevent

it

from

falling.

Carefully

remove

drive

motor,

disengaging

drive

chain

from

flexible

drive

coupling.

8.

FEED

AND

TAKE-UP

PULLEY

ASSEMBLIES.

(See

Parts

Catalog

figure

16.)

Loosen

two

screws

(29)

so

that

idler

assembly

(28)

can

be

shifted

to

the

right,

thereby

removingtension

from

drive

chain

(19).

Slip

drive

chain

from

sprockets

(17,

20

and

24).

Loosen

set

screws

(21

and

25),

and

remove

sprockets

(20

and

24),

pulleys

(22

and

26)

and

thrust

washers

(23

and

27)

from

mechanism

plate.

9.

LENS

HOLDER

ASSEMBLY.

(See

Parts

Catalog

figure

16.)

Remove

two

screws

(43),

lock

washers

(44)

and

the

lens

holder

stop

plate

(42).

Slowly

rack

the

lens

holder

assembly

(45)

forward

by

turning

the

knurled

focusing

knob

on

the

lens

mounting

assembly

(49)

until

the

lens

holder

assembly

is

free.

Be

careful

not

to

lose

the

friction

button

(46)

and

friction

spring

(47)

located

in

a

recess

in

the

mounting

assembly.

10.

LENS

MOUNTING

ASSEMBLY.

(See

Parts

Cata-

log

figure

16.)

Remove

three

screws

(50

and

51)

and

one

lock

washer

(52)

and

lift

the

lens

mounting

as-

sembly

(49)

from

the

mechanism

plate.

Invert

mount-

ing

assembly

and

permit

guide

disc

(48)

to

drop

into

hand.

11.

FEED

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

3.)

a.

Remove

nuts

(3

and

4)

and

spring

(5).

b.

Tap

out

the

driving

(6)

and

remove

spindle

clutch

assembly

(7),

clutch

plate

subassembly

(8),

and

thrust

washer

(10).

If

necessary,

press

ball

bearing

(9)

from

clutch

plate

subassembly.

c.

Remove

spindle

assembly

(2),

spindle

pulley

(11)

and

friction

washer

(12)

from

arm

(15).

If

necessary,

press

thrust

bearings

(14)

from

arm.

d.

Inspect

parts

for

actual

physical

damage.

Press

bearings

onto

wooden

dowels

of

snug

fit

and

spin

the

bearing,

noting

any

roughness

in

rotation

which

would

indicate

bearing

balls

or

rollers

with

flat

spots.

Replace

damaged

parts.

12.

TAKE-UP

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

4.)

a.

Remove

elastic

stop

nut

(3),

tension

nut

(4)

and

tension

spring

(5).

b.

Tap

out

driving

(6)

and

disassemble

remaining

parts

from

take-up

arm

(14).

c.

Inspect

parts

for

actual

physical

damage.

Press

the

bearings

onto

wooden

dowels

of

snug

fit

and

spin

the

bearing,

noting

any

roughness

in

rotation

which

would

indicate

bearing

balls

or

rollers

with

flat

spots.

Replace

all

damaged

parts.

13.

SWITCH

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

5.)

Under

normal

circumstances,

complete

disas-

sembly

of

the

switch

panel

will

not

be

necessary.

Re-

moval

of

parts

for

replacement

can

be

accomplished

by

reference

to

Parts

Catalog

figure

5.

14.

SOUND

HEAD

ASSEMBLY-614CB

ONLY.

(See

Parts

Catalog

figure

7.)

NOTE:

Refer

to

paragraph

29

for

disassembly

of

sound

head

for

614CBM

and

CBRM

projectors.

a.

Remove

retaining

rings

(3)

and

washers

(4)

and

pull

roller

assemblies

(1

and

2)

from

pivot

studs

(5).

Refer

to

paragraph

15

for

repair

instructions

for

these

roller

assemblies.

b.

Remove

screw

(8)

and

impedance

roller

assembly

(7).

Refer

to

paragraph

16

for

impedance

roller

re-

pair

instructions.

c.

Loosen

set

screws

(10

and

11)

and

carefully

with-

draw

stabilizer

housing

assembly

(9).

Refer

to

para-

graph

17

for

repair

instructions

for

housing

assembly.

d.

Loosen

cover

screw

(13)

and

remove

lamp

cover

assembly

(12).

Move

release

cam

(18)

to

extreme

right-hand

position,

and

lift

out

the

exciter

lamp

(16).

Lamp

socket

parts

can

be

disassembled

by

removing

lamp

socket

nut

(17),

screw

(20)

and

lock

washer

(21),

and

three

flat

head

screws

(23).

CAUTION

The

scanning

lens

(24)

is

pre-set

by

means

of

precision

instruments

for

maximum

efficiency

and

should

not

be

disturbed

-

unless

it

has

been

determined

that

this

item

requires

replace-

ment.

If

such

is

the

case,

remove

screw

(25)

and

withdraw

the

lens.

e.

Loosen

knob

on

photocell

cover

assembly

(26)

and

lift

off

the

cover.

To

remove

photocell

assembly

5

(37),

take

out

screws

(38)

and

lock

washers

(39)

and

disconnect

cell

leadwire

lugs

from

terminal

block

(30).

f.

Remove

screws

(31

and

34)

and

lock

washers

(32)

to

free

terminal

block

(30).

Note

spacing

collar

(33)

between

terminal

block

and

casting

and

hexagonal

spacer

nut

(35)

at

front

of

terminal

block.

Disas-

semble

remaining

parts

as

required.

g.

Replace

all

damaged

parts.

Photocell

assembly

replacement

is

determined

by

analyzing

the

accom-

panying

customer

report

for

the

projector

and

by

pre-

testing

the

equipment

as

instructed

in

the

Test

Pro-

cedure

section,

page

21.

15.

JOCKEY

ROLLER

ASSEMBLY.

(See

Parts

Catalog

figures

8

and

9).

NOTE:

Both

the

upper

jockey

roller

assembly

and

lower

jockey

roller

assembly

are

covered

by

the

following

instructions.

Except

for

the

difference

in

roller

housings,

both

assemblies

are

identical

in

construction.

a.

Loosen

set

screw

(2)

and

pull

out

roller

shaft

(3),

thus

freeing

all

parts

of

assembly.

Do

not

press

bearings

(1

and

4)

from

housing

(6)

unless

damaged.

b.

Inspect

roller

for

deep

scratches,

nicks

or

flat

spots.

Inspect

shaft

for

bends

and

make

certain

that

shaft

bearing

surfaces

are

not

rough.

Check

housing

for

rough

spots

which

might

interfere

with

free

ro-

tation

of

roller.

16.

IMPEDANCE

ROLLER

ASSEMBLY.

(See

Parts

Catalog

figure

10.)

a.

Loosen

set

screws

(1

and

2)

and

unscrew

the

ad-

justable

pivot

(4).

The

slug

(3)

will

drop

into

the

housing

(12)

as

pivot

is

withdrawn.

Remove

plain

pivot

(5)

and

li

ft

roller

(6)

from

housing.

b.

Disassemble

parts

(7)

through

(11)

from

hous-

ing

(12).

c.

Inspect

pivot

pins

(4

and

5)

to

make

certain

that

tapered

ends

are

not

blunted

or

distorted.

Check

spring

for

broken

ends.

Make

certain

that

bearings

in

roller

are

free

of

dirt,

dust

or

other

foreign

sub-

stance.

Inspect

roller

for

deep

scratches,

nicks

or

flat

spots.

17.

STABILIZER

HOUSING

ASSEMBLY-

CB,

CBM,

and

CBRM

only.

(See

Parts

Catalog

figure

11.)

CAUTION

Unless

the

tools

mentioned

in

paragraph

39,

step

g,

are

available,

do

not

attempt

to

dis-

assemble

the

film

scanning

drum

(2)

and

shaft

(14)

from

the

stabilizer

housing.

a.

Hold

lock

nut

(10)

with

wrench

and

carefully

remove

sound

drum

nut

(1).

Pull

film

scanning

drum

(2)

from

shaft

(14).

b.

Remove

screws

(6)

and

carefully

lift

brackets

(5),

prism

mount

(8)

and

light

pipe

prism

(7)

from

housing

(15).

Lift

the

prism

gently

from

the

mount.

c.

Remove

screws

(12)

and

pull

assembled

shaft

(14)

from

housing.

Place

wrench

on

flats

of

shaft,

unscrew

self

locking

nut

(9).

Unscrew

lock

nut

(10)

and

remove

lock

plate

(11)

and

bearing

(13)

from

shaft.

Remove

bearing

(3)

and

thrust

washer

(4)

from

housing.

CAUTION

Avoid

placing

fingers

on

ball

races

of

bearing

during

removal,

and

do

not

use

any

tool

that

might

cause

damage

to

bearing.

After

removal,

wrap

bearing

in

clean

cloth

or

tin

foil.

d.

Prism

should

be

wiped

with

soft

lint

-free

cloth.

Inspect

prism

for

chips,

scratches

or

discolora-

tion.

Inspect

film

scanning

drum

for

nicks

or

grooves.

Make

certain

that

stabilizer

shaft

is

not

bent

in

any

way.

Check

ball

bearing

rotation;

bearings

should

ro-

tate

freely

and

smoothly.

18.

UNIVERSAL

DRIVE

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

12.)

NOTE:

Refer

to

paragraph

92

for

synchronous

mo-

tor

repair.

a.

Remove

resistor

and

mounting

bracket

parts

(items

1

through

7)

and'

capacitors

(8

and

30)

from

motor

housing,

unsoldering

leadwires

as

required.

b.

In

order

to

remove

motor

gear

housing

assembly

(11),

it

first

will

be

necessary

to

remove

the

flexible

coupling

from

the

gear

housing

shaft.

This

can

be

done

by

loosening

the

coupling

set

screw

closest

to

the

end

of

the

shaft

and

sliding

off

the

coupling

with

attached

chain

sprocket.

Take

out

three

screws

(12

and

14)

and

lock

washers

(13

and

15)

and

withdraw

the

com-

plete

gear

housing.

Temporarily

assemble

coupling

to

shaft

and

set

this

assembly

aside.

Repair

instruc-

tions

for

the

gear

housing

assembly

are

outlined

in

paragraphs

19

and

41.

c.

Disassemble

motor

mounting

bracket

and

parts

(items

16

through

25).

d.

Remove

brush

holder

caps

(26)

and

brush

and

springs

assemblies

(27).

Brush

holders

(29)_need

not

be

removed.

e.

Loosen

two

set

screws

(34),

and

remove

governor

(33)

and

governor

brush

and

spring

assemblies

(35).

Brush

holders

(37)

need

not

be

removed.

f.

Remove

bracket

(41)

and

capacitor

(38),

unsolder-

ing

capacitor

leads

as

required.

g.

Drive

out

(45)

and

remove

drive

gear

(46).

Remove

rear

housing

(42)

and

armature

(49).

Be

care-

ful

not

to

lose

the

two

bearing

loading

springs

(50)

from

end

of

armature

shaft.

h.

Disassemble

motor

field

(52)

from

housing

(55).

These

parts

are

machined

in

assembly

and

must

be

replaced

as

an

assembly.

i.

Inspect

bearings

to

make

certain

that

they

spin

freely

and

smoothly

and

that

they

seat

properly

in

the,

bearing

recesses

of

the

housing.

Bearings

must

not

be

loose

in

bearing

recess.

j.

Check

field

coils

for

continuity

with

an

ohmmeter.

k.

Check

armature

for

short

circuit

on

a

growler.

Inspect

armature

winding

for

signs

of

burning,

char-

ring,

or

serious

nicks

and

breaks.

Examine

com-

mutator

for

excessive

wear

or

badly

burned

commuta-

tor

bars.

1.

Inspect

motor

brushes

for

excessive

wear

(shorter

6

than

3/8

-inch)

and

broken

pigtails

and

springs.

In-

spect

governor

brushes

for

excessive

wear

(shorter

than

3/16

-inch)

and

broken

pigtails

and

springs.

m.

Check

slip

rings

on

back

of

governor

for

indication

of

a

permanent

open

or

short.

Resistance

on

volt

-

ohmmeter

should

read

"zero"

with

governor

contacts

closed;

resistance

should

be

infinite

with

contacts

held

open.

n.

Check

capacitors

with

electronic

multimeter

for

leaks

and

shorts.

Check

resistor

with

voltohmmeter

for

proper

resistance

(150

ohms

on

CB

projectors;

75

ohms

on

CBM

projectors).

19.

DRIVE

MOTOR

GEAR

HOUSING

ASSEMBLY.

(See

Parts

Catalog

figure

13.)

a.

Loosen

set

screw

in

flexible

drive

coupling

(1)

to

free

the

sprocket

(2).

b.

Disassemble

remaining

parts

from

housing

(8).

20.

BLOWER

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

14.)

a.

Disassemble

the

blower

motor

as

shown

in

ex-

ploded

view.

Be

careful

not

to

lose

the

bearing

load-

ing

spring

(12)

at

the

commutator

end

of

the

arma-

ture

(10).

b.

Inspect

motor

brushes

for

broken

springs

or

ex-

cessive

wear

(shorter

than

1/4

-inch

in

length).

c.

Check

field

coils

for

continuity.

d.

Inspect

winding

of

armature

for

signs

of

burning,

charring,

serious

nicks

or

breaks.

Examine

com-

mutator

for

out

-of

-round,

excessive

wear

or

burned

spots.

e.

Spin

the

ball

bearings

and

check

for

smooth,

quiet

rotation.

f.

Inspect

blower

wheel

for

bent

or

broken

blades.

g.

Check

capacitor

(250

volt)

with

ohmmeter

for

leaks

or

shorts.

21.

REAR

MECHANISM

PLATE.

(See

Parts

Catalog

figure

15.)

a.

Disassemble

the

rear

mechanism

plate,

as

re-

quired,

by

reference

to

the

exploded

view.

b.

Remove

dust

and

dirt

from

reflector

by

blowing

air

across

the

surface

with

a

syringe

bulb.

Remove

stains

with

cleaning

tissue.

If

necessary,

use

a

drop

or

two

of

denatured

alcohol

to

remove

oil

film

or

fingerprints.

22.

FEED

AND

TAKE-UP

PULLEYS

-

CB,

CBM

and

CBRM

only.

(See

Parts

Catalog

figure

20.)

a.

Disassemble

the

feed

and

take-up

pulleys,

being

careful

not

to

lose

the

bearing

balls

(4).

b.

Inspect

ears

of

pulley

ratchet

for

excessive

wear.

Check

bearing

for

smooth,

free

rotation.

Inspect

shaft

for

distortion

or

excess

wear.

c.

If

shaft

is

worn

to

less

than

0.247

inch

in

dia-

meter,

replace

shaft.

23.

APERTURE

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

23.)

a.

Remove

screws

(2)

and

film

rail

(1).

b.

Remove

screws

(4),

film

floating

rail

(3)

and

bracket

spring

(5).

Washers

(6)

will

drop

free

when

rail

(3)

is

removed.

c.

Inspect

sapphire

jewel

insets

in

rails

for

chip-

ping.

Inspect

aperture

plate

subassembly

for

ex-

cessive

wear

at

the

plate

rails.

24.

LENS

HOLDER

ASSEMBLY.

(See

Parts

Catalog

figure

24.)

a.

Disassemble

as

shown

in

exploded

view.

b.

Inspect

fiber

button

on

end

of

lens

lock

screw

for

good

condition.

c.

Inspect

gear

rack

for

broken

teeth.

d.

Check

machined

mounting

surface

of

lens

holder

for

wear

and

rough

spots.

25.

LENS

MOUNTING

ASSEMBLY.

(See

Parts

Catalog

figure

25.)

a.

Disassemble

by

following

the

sequence

outlined

in

figure

25.

b.

Inspect

focusing

pinion

(15)

for

chipped

or

broken

teeth.

c.

Inspect

sliding

track

of

lens

holder

mounting

(23)

for

rough

spots.

26.

SPROCKETS,

SPROCKET

GUARDS

AND

GEARS.

(See

Parts

Catalog

figure

17.)

NOTE:

The

following

procedure

outlines

the

dis-

assembly

of

only

such

parts

as

require

special

in-

structions.

For

purely

mechanical

disassembly

pro-

cedures,

refer

to

Parts

Catalog

figure

17.

a.

Remove

screws

(2

and

3)

and

lock

washers

(4)

and

lift

off

gear

cover

(1)

to

expose

gears.

b.

Remove

retaining

ring

(7)

and

spacer

(8)

and

pull

double

idler

gear

(6)

from

gear

stud

(9).

Remove

re-

taining

ring

(11)

and

pull

single

idler

gear

(10)

from

gear

stud

(12).

Pull

sleeve

(13)

from

shaft

of

gear

(17).

c.

To

remove

sprockets

(14),

loosen

set

screws

(15)

and

pull

sprockets

and

fiber

washers

(16)

from

gear

shafts.

Withdraw

gears

(17,

18

and

19)

from

rear

of

mechanism

plate.

Be

careful

not

to

lose

film

stops

(20).

d.

Film

strippers

(21)

and

sprocket

guards

(24)

can

be

removed

by

taking

out

attaching

parts

(22

and

23)

and

(25

and

26),

respectively.

If

necessary,

disassem-

ble

sprocket

guards

(items

27

through

31)

as

shown

in

illustration.

e.

Unhook

spring

(34)

from

rear

arm

(36),

loosen

set

screw

(37)

and

disassemble

rear

arm

and

loop

-

setter

assembly

(38)

from

mechanism

plate.

f.

Remove

three

screws

(40)

and

lock

washers

(41)

at

rear

of

mechanism

plate

and

lift

off

film

slack

adjusting

assembly

(39).

Refer

to

paragraph

27

for

repair

instructions.

g.

Removal

of

remaining

parts

is

purely

mechanical

and

can

be

accomplished

by

reference

to

Parts

Catalog

figure

17.

h.

Inspect

gears

and

sprockets

for

chipped

or

broken

teeth.

i.

Examine

film

contacting

surfaces

of

sprockets

and

rollers

for

grooves,

deep

scratches,

nicks

and

rough

or

flat

spots.

j.

Inspect

film

contacting

surfaces

of

sprocket

guards

7

and

film

strippers

for

rough

spots.

k.

Examine

all

springs

for

breaks

in

coils.

1.

Inspect

grooves

of

pivot

bracket

(31),

in

which

the

point

of

the

locking

rod

(29)

rides,

for

excessive

wear

and

breaks.

Inspect

point

of

locking

rod

for

excessive

bluntness

due

to

wear.

27.

LOOPSETTER

ADJUSTING

ASSEMBLY.

(See

Parts

Catalog

figure

17.)

a.

Remove

screw

(44),

loosen

set

screw

(43),

and

disassemble

all

parts

(45

through

49)

from

housing

(50).

b.

Inspect

adjusting

collar

for

broken

teeth

and

small

end

of

stop

for

excessive

wear.

Check

springsfor

broken

coils.

c.

If

end

of

stop

(46)

is

rounded

excessively

or

broken,

replace

both

and

adjusting

collar.

Replace

other

parts

which

are

damaged.

If

(51)

is

broken

off,

replace

adjusting

rod

and

(48).

28.

SHUTTER

AND

SHUTTLE

MECHANISM.

(See

Parts

Catalog

figure

18.)

a.

Loosen

set

screws

(2)

and

remove

framer

knob

Remove

screws

(4),

lock

washers

(5)

and

shutter

cover

assembly

(3).

If

shutter

cover

requires

repairs,

refer

to

Parts

Catalog

figure

26

for

disassembly

pro-

cedure.

b.

Remove

screws

(7

and

7A)

and

lock

washers

(8)

and

lift

off

the

cover

(6).

Disengage

spring

(9).

Dis-

assemble

items

(10)

through

(23)

from

mechanism

plate.

Note

that

parts

(17)

through

(23)

are

furnished

as

a

complete

kit

and

must

be

replaced

as

a

complete

kit

if

any

one

part

is

damaged.

c.

Loosen

set

screw

(25)

and

remove

sprocket

(24).

Remove

screws

(27),

lock

washers

(28)

and

bracket

(26).

Remove

screws

(30)

and

lock

washer

(31)

and

disassemble

parts

(29), (32),

(33),

(34)

and

(35)

from

mechanism

plate.

Tie

the

shims

(33)

and

(35)

in

groups

and

mark

them

so

the

same

quantity

can

be

installed

during

reassembly.

d.

Loosen

two

set

screws

(37)

and

disassemble

gear

(36)

and

rear

camshaft

(38)

from

mechanism

plate.

Press

drive

shaft

(46)

from

mechanism

plate,

and

disassemble

thrust

collar

(41),

hub

washer

(45)

and

drive

gear

(43)

from

shaft.

Remove

screws

(40)

and

plate

(39).

e.

Loosen

set

screw

(48)

and

remove

shutter

gear

(47)

and

shutter

assembly

(49)

from

mechanism

plate.

Disassemble

shutter

only

if

necessary

for

parts

replacement.

f.

Loosen

set

screws

(51)

in

locking

collar

(50).

Remove

three

screws

(53)

and

lock

washers

(54)

and

withdraw

bracket

(52)

and

collar

(50)

from

shaft

(59).

Remove

screw

(56),

spring

washer

(57)

and

friction

washer

(58)

to

free

the

pivot

bar

(55).

Un-

screw

shaft

(59)

from

pivot

bar.

g.

Remaining

disassembly

can

be

accomplished

by

reference

to

Parts

Catalog

figure

18.

h.

Inspect

all

parts

for

unusual

wear

or

damage.

The

shuttle

kit

parts

should

be

examined

very

closely

for

wear.

Clean

oiling

system

thoroughly.

i.

Check

gears

for

chipped

or

broken

teeth.

j.

Make

certain

that

shutter

blades

are

not

bent.

k.

Check

camshafts

to

see

if

they

are

bent

or

otherwise

distorted.

NOTE:

Refer

to

the

addendum

material

beginning

on

page

58

for

614CD

lubrication

system

maintenance.

CAUTION

MECHANISM

PLATE

BEARINGS

(Parts

Cata-

log

figure

27)

should

not

be

removed

for

re-

placement.

Figure

27

is

included

only

for

factory

parts

identification.

Special

equip-

ment

is

required

to

press

in,

broach

and

align

the

mechanism

plate

bearings,

and

these

bear-

ings

will

not

be

supplied

separately

to

service

stations.

When

bearings

are

worn

to

a

point

requiring

replacement,

the

complete

mech-

anism

plate

assembly

(Part

No.

061156)

must

be

replaced.

29.

SOUND

HEAD

ASSEMBLY-614CBM

AND

CBRM.

(See

Parts

Catalog

figure

37.)

a.

Remove

retaining

rings

(1)

and

flat

washers

(2)

and

pull

the

jockey

roller

assemblies

(3

and

4)

from

the

jockey

pivot

studs

(5).

Refer

to

paragraph

15

for

roller

assembly

repair.

b.

Remove

screw

(7)

and

impedance

roller

assembly

(8).

Refer

to

paragraph

16

for

impedance

roller

as-

sembly

repair

instructions.

c.

Loosen

set

screws

(9

and

10)

and

carefully

with-

draw

stabilizer

housing

assembly

(11).

Refer

to

para-

graph

17

for

stabilizer

housing

repair.

d.

Loosen

cover

screw

(12A)

and

remove

lamp

cover

assembly

(12).

Move

release

cam

(15)

to

extreme

right-hand

position,

and

lift

out

exciter

lamp

(13).

Lamp

socket

parts

can

be

disassembled

by

removing

lamp

socket

nut

(14),

screw

(16),

lock

washer

(17)

and

three

flat

head

screws

(19).

CAUTION

The

scanning

lens

(24)

is

pre-set

by

means

of

precision

instruments

for

maximum

efficiency

and

should

not

be

disturbed

unless

it

has

been

determined

that

this

item

requires

replace-

ment.

If

such

is

the

case,

remove

screw

(2(5)

and

carefully

pull

out

the

lens.

e.

Note

that

the

614CBRM

projector

is

equipped

with

a

pilot

lamp

(25)

and

lamp

socket

(26)

at

the

top

of

the

sound

head

mounting

plate.

f.

Remove

the

tube

shield

(27)

and

the

12AY7

tube

(28).

If

the

input

transformer

(31),

cable

assembly

(37)

or

tube

socket

(44)

require

replacement,

unsolder

leadwires

as

necessary

and

remove

attaching

parts

as

noted

in

the

exploded

views.

g.

Remove

the

screw

(45),

lock

washer

(46)

and

photo-

cell

cover

(47).

Remove

four

screws

(48)

and

lock

washers

(49)

and

disassemble

the

photocell

(50)

and

mounting

plate

(51)

from

sound

head.

The

terminal

block

(54)

is

secured

with

two

round

head

screws

(52)

and

lock

washers

(53).

h.

Remove

stop

nut

(55)

and

plain

washer

(56)

and

lift

off

retracting

lever

(57).

The

chassis

subassem-

bly

(61)

is

secured

with

three

round

head

screws

(59)

and

lock

washers

(60).

Refer

to

figure

38

for

disas-

sembly

of

chassis

parts

if

inspection

indicates

that

parts

replacement

is

necessary.

8

30.

PROJECTOR

CASE

ASSEMBLY.

Disassembly

of

projector

case

parts

can

be

ac-

complished

by

referring

to

Parts

Catalog

figures

32

through

36.,

Disassemble

only

those

parts

which

re-

quire

replacement.

31.

AMPLIFIER

AND

SPEAKER

ASSEMBLY.

Actual

physical

replacement

of

amplifier

and

speaker

parts

can

be

accomplished

by

removing

the

amplifier

and

speakerassembly

(paragraph

4)

and

referring

to

Parts

Catalog

figures

28

through

31

for

identification

of

replacement

parts.

To

determine

which

electronic__

parts

require

replacement,

it

first

will

be

necessary

to

perform

a

complete

trouble-

shooting

check

as

outlined

in

the

Trouble

Shooting

Guide,

and

a

circuit

analysis

of

the

amplifier

as

set

forth

in

the

Test

Procedure

section.

Replace

all

faulty

components.

€1.4„

9

tufa

Roma

32.

CLEANING

INSTRUCTIONS.

OPTICAL

PARTS:

Clean

the

projection

lens,

con-

densers,

the

reflector

and

the

lens

and

mirror

of

sound

optical

system.

The

lens

of

the

sound

optical

system

is

mounted

in

the

boss

on

the

sound

head

between

the

exciter

lamp

cover

and

the

sound

drum.

The

mirror

of

the

sound

optical

system

is

located

in

the

sound

drum.

(See

figure

11,

index

12.)

The

front

and

rear

elements

of

the

projection

lens

and

sound

optical

lens

should

be

cleaned.

Do

not

attempt

to

take

the

lenses

apart

for

any

further

cleaning.

The

cleaning

should

be

done

with

either

the

Bell

&

Howell

lens

cleaning

kit

or

Filmo

lens

cleaning

tis-

sue.

If

only

a

slight

amount

of

dust

has

accumulated

on

the

lenses,

use

lens

cleaning

tissue

to

remove

the

dust.

If,

however,

any

fingerprints,

oil,

grease

or

other

accumulation

•

of

dirt

is

present,

Bell

&

Howell

Optikleen

lens

cleaning

fluid

should

be

wiped

on

the

lens

surfaces.

Then

clean

thoroughly

with

lens

cleaning

tissue.

Clean

condenser

lenses

and

reflector.

FILM

HANDLING

PARTS:

Film

handlingparts

in-

clude

aperture

plate,

gate

shoe,

sprockets

and

other

surfaces

over

which

the

film

must

pass.

All

of

these

parts

should

be

cleaned

with

a

soft

cloth.

If

any

dirt

has

accumulated

and

hardened,

dampen

the

soft

cloth

and

rub

the

dirt

off.

Follow

this

with

a

polishing

with

a

dry,

soft

cloth.

Be

very

careful

not

to

scratch

the

polished

surface.

If

any

emulsion

has

collected,

remove

it

with

a

toothpick

or

an

orange

stick

cut

to

a

knife

edge.

Dirt

that

may

have

accumulated

between

the

teeth

of

the

sprocket

wheels

should

be

cleaned

out

with

a

small,

soft

brush

or

soft

cloth.

Clean

the

aperture

opening

with

the

aperture

brush.

MECHANISM

PARTS:

Any

parts

other

than

those

already

mentioned

should

be

cleaned

with

a

mixture

of

1/3

carbon

tetrachloride

and

2/3

naphtha,

to

re-

move

old

grease

and

lubricating

oil.

Dry

thoroughly.

The

most

ideal

method

of

drying

is

with

compressed

air.

Where

this

method

is

not

possible,

dry

with

a

clean

cloth

as

much

as

possible

and

then

allow

parts

to

dry

thoroughly

in

air.

33.

GENERAL

REPAIR

AND

REPLACEMENT.

MECHANICAL

PARTS:

The

reconditioning

of

parts

for

possible

re

-use

in

the

projector

is

not

practical.

Parts

which

have

been

physically

damaged

must

be

replaced

with

new

parts.

TUBES:

All

tubes

should

be

tested

and

replaced

if

not

up

to

standard.

Be

sure

to

replace

correct

tube

in

the

correct

socket.

All

tubes

and

sockets

are

ad-

equately

marked.

ELECTRICAL

CORDS:

If

at

any

time

you

find

the

rubber

coated

cords

are

sticky,

shake

a

generous

amount

of

talcum

powder

into

a

soft

cloth

and

then

pass

the

entire

length

of

cord

through

it.

The

sticki-

ness

is

due

to

long

periods

of

storage

and

may,

be

especially

prevalent

where

the

cord

has

been

tightly

wound.

FILM

HANDLING

PARTS:

Minor

scratches

or

burrs

can

be

removed

from

parts

which

contact

the

film

by

polishing

lightly

with

crocus

cloth.

34.

SPECIAL

REPAIR

INSTRUCTIONS.

DRIVE

AND

BLOWER

MOTORS:

If

a

motor

com-

mutator

is

out

-of

-round,

has

high

spots

or

burned

spots,

it

can

be

turned

down

in

a

lathe.

-Make

the

cut

no

deeper

than

necessary

to

correct

the

faulty

con-

dition.

The

ends

of

the

commutator

segments

should

not

be

less

than

1/16

-inch

after

the

cutting

operation.

LENS

MOUNTING

ASSEMBLY:

The

sliding

track

of

the

lens

holder

mounting

must

operate

smoothly

and

evenly.

Rough

spots

can

be

removed

from

the

track

with

a

very

fliie-cut

file;

then

polish

li

ghtly

with

cro-

cus

cloth.

SHUTTLE

MECHANISM:

Note,

in

Parts

Catalog

figure

18,

that

shuttle

parts

(17)

through

(23)

are

supplied

as

a

kit.

If

any

one

of

these

parts

becomes

damaged

or

excessively

worn

the

entire

kit

must

be

installed.

9

I

Readde

35:

FEED

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

3.)

Reassemble

the

parts

in

reverse

order

of

dis-

assembly,

noting

the

following

special

precautions:

a.

Apply

a

very

light

coating

of

grease

to

both

sides

of

the

thrust

washers

(10)

and

to

the

two

ball

bearings

(9

and

14).

b.

After

installing

spindle

tension

nut,

(4),

tighten

this

nut

just

enough

•

so

that,

when

the

pulley.

(11)

is

held,

the

spindle

can

be

turned

manually.

c.

Tighten

elastic

stop

nut

(3)

up

against

spindle

tension

nut

(4),

but

do

not

overtighten.

Spindle

(2)

must

turn

freely

and

must

have

approximately

1/32

-

inch

end:play

(in

and

out

of

arm).

36.

TAKE-UP

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

4.)

Reassemble

the

take-up

reel

arm

in

reverse

order

of

disassembly,

noting

the

•

following

precautions:

a.

Apply

a

very

light

coating

•

of

grease

to

both

thrust

bearings

(13)

and

the

ball

bearing

(11).

b.

After

installing

spindle

tension

nut

(4),

tighten

this

nut

just

enough

so

that,

when

pulley

(10)

is

held,

the

spindle

can

be

turned

manually.

c.

Tighten

elastic

stop

nut

(3)

up

against

spindle

tension

nut

(4),

but

do

not

overtighten.

Spindle

(2)

must

turn

freely

and

must

have

approximately

1/32

-

inch

end

play

(in

and

out

of

arm).

.37.

JOCKEY

ROLLER

ASSEMBLY.

.

(See

Parts

Catalog

figures

8

and

9).

NOTE:

Except

for

the

.difference

in

roller

housings,

the

upper

and

lower

jockey

rollers

are

identical

.

in

'construction.

The

following

reassembly

procedure

is

applicable

to

both

assemblies.

a:

Place

a

drop

of

oil

into

each

bearing.

b.

'

Position

roller

(5).

between

bearings

(4)

and

install

shaft

•

(3).

Tighten

set

screw

(2)

just

enough

to

_

hold

,roller

to

shaft.

Make

certain

that

roller

rotates

freely

with.

a

minimum

of

end

play:

CAUTION

Do

not

,overtighten

.set

.screw

(2),

as

this

. .

.

could

bend

th

e

shaft,

and

cause

the

roller,

to

rotate

erratically.

38.

IMPEDANCE

ROLLERASSEMBLY.

(See

Parts

Catalog

figure.

10.)

.

‘•

,

.

a.

Place

two

drops

of

oil

into

the

bearings.

at'

each

end

of

the

roller

and

allow

oil

to'•seep.into

the

felt

wick

within.

the',

roller.

Entire

Shalt

of

stud

(10)2and

Placed/ate

mounting

face

of

adjusting

nut

(9)

must

be

coated

lightly

with

grease

during

reassembly.

b.

Hold

roller

(6)

in

position

between

arms

of

housing

with

5/32

-inch

wide

roller

groove

closest

to

arm

with

plain

(unthreaded)

pivot

hOle.

Insert

pivot

(5)

and

install

set

screw

(1)

so

that

cone

point

of

screw

engages

groove

in

pivot

pin.

c.

Screw

adjustable

pivot

(4)

into

place

to

a

point

where

,

roller

rotates-

freely

with

a

minimum

of

end

play.

Insert

slug

(3),

burr

side

up,

into

set

screw

hole,

and

install

set

screw

(2).

Re

-check

roller

freedom_

of

rotation

and

end

play.

End

play

must

be

barely

perceptible

(not

in

excess

of

0.0005

-inch).

Tighten

set

screw

(2).

d.

Insert

spring

(11)

go

that

bent

end

engages

hole

within

housing

(12).

Lubricate

stud

(10),

as

instructed

in

step

a,

above,

and

insert

stud

through

spring

and

housing.

Outer

bent

end

of

spring

must

engage

small

hole

in

mounting

flange

`face

of

stud.

Lubricate

nut

(9),

step

a,

above,

and

•install

nut,

screw

(7)

and

lock

washer

(8).

Tighten

screw

just

enough

to

hold

parts

together.

This

screw

will

be

tightened

after

the

sound

optical

system

alinement

tests

(paragraph

81)

are

made,

following

reassembly

of

the

projector.

39.

STABILIZER

HOUSING

ASSEMBLY

-

CB,

CBM

and

CBRM

only.

(See

Parts

Catalog

figure

11.)

a.

Apply

a

light

film

of

grease

to

the

bearing

races,

the

bearing

shoulders

of

the

housing,

and

to

the

stabilizer

shaft

during

reassembly.

.

b.

Lubricate'

bearing

(13),

step

a,

above,

and

press

bearing

up

against

shoulder

of

shaft

(14)

by

hand.

Do

not

exert

undue

pressure•

during

installation.

c.

Install

lock

plate

(11)

and

lock

nut

(10),

tightening

nut

by

hand.

The

lock

nut

holds

bearing

to

shaft

and

must

fit

into

groove

of

lock

plate.

With

wrench

en-

gaging

flats

on

stabilizer

shaft,

tighten

lock

nut

(10)

securely.

Install

and

tighten

self

locking

nut

(9).

d.

Lubricate

shaft,

step

a,

above,

and

insert

par-

tially

assembled

shaft

into

housing

(15).

Install

three

screws

(12)

just

enough

to

hold

lockplate

(11)

in

place.

e.

Insert

thrust

washer

(4),

concave

side

toward

bearing

(3),

into

front

opening

in

housing

(15).

Lub-

ricate

bearing

(3),

step

a,

above,

slide

it

over

end

of

shaft,

and

gently

press

it

into

stabilizer

housing

and

down

against

thrust

washer

(4).

f.

Install

film

'scanning

drum

(2)

and

nut

(1).

Hold

lock

nut

(10)

-with

wrench

while

tightening

sound

drum

nut

(1).

Tighten

the

three

screws

(12)

and

rotate

the

shaft.

Shaft

must

turn

freely

and

must

have

an

end

play

of

approximately

0.015

-inch.

CAUTION

Handle

sound

drum

carefully

at

'all

times

to

avoid

damage

which

might

impair

sound.

10

g.

Place

partially

assembled

stabilizer

housing

in,

a

machinist's

"V"

block,

and

measure

the

true

-running

quality

of

the

film

scanning

drum

by

rotating

it

against

a

trueness

indicator.

If

possible,

use

a

Starrett

height

gauge

(No.

454A)

and

last

word

dial

indicator

(No.

711F)

or

similar

equipment.

The

total

indicator

deviation

on

turned

diameter

of

scanningdrum

must

not

exceed

0.0004

-inch

with

the

housing

held

stationary.

If

devia-

tion

exceeds

0.0004

-inch,

fine

turn

(do

not

grind)

outside

diameter

of

drum

between

centers

of

shaft

until

tolerance

requirement

has

been

met.

Be

sure

to

plug

prism

opening

with

a

cotton

and

seal

with

tape

before

cutting

in

a

lathe.

NOTE:

Do

not

turn

diameter

of

film

scanning

drum

to

a

point

greater

than

0.010

-inch

of

original

diameter.

h.

Remove

tape

and

cotton

from

prism,

opening

in

stabilizer

housing.

Be

sure

that

no

stray

strands

of

cotton

remain

in

openings.

Insert

the

prism

(7)

into

mount

(8)

with

.

clear

areas

of

prism

facing

up.

Insert

mount

into

one

of

the

brackets

(5),

again

with

clear

prism

areas

facing

up.

Insert

assembled

parts

into

stabilizer

housing

with

clear

prism

areas

facing

up

and

widest

end,

of

prism

extending

approximately

0.040

-inch

under

the

film

scanning

drum.

Install

re-

maining

bracket

(5)

with

four

screws

(6).

40.

SOUND

HEAD

ASSEMBLY

(614CB

only).

(See

Parts

Catalog

figure

7.)

NOTE:

Refer

to

paragraph

51

for

reassembly

of

sound

head

for

614CBM

and

CBRM

projectors.

a.

Insert

the

stabilizer

housing

assembly

(9)

care-

fully

into

and

through

the

mounting

plate

(43).

Adjust

position

of

stabilizer

housing

so

that

its

light

pipe

prism

will

be

perpendicular

to

the

scanning

lens

when

lens

is

installed.

The

inner

face

of

the

sound

drum

should

extend

0.044

-inch

(±0.002

-inch)

beyond

the

centerline

of

the

scanning

lens,

as

shown

in

figure

3.

This

dimension,

is

obtained

by

use

of

the

sound

drum

adjustment

gage,

Tool

_Number

S

-061082-N1

(figure

2).

b.

Insert

sound

drum

adjustment

gage,

as

shown

in

figure

4,

and

move

the

stabilizer

housing

assembly

in

or

out

until

inner

face

of

sound

drum

just

touches

small

projection

on

end

of

gage.

Recheck

to

make

certain'

that

light

pipe

prism

is

perpendicular

in

0.044"

10.002"

SOUND

DRUM

SCANNING

LENS

CENTER

LINE

Figure

3.

Positioning

the

Sound

Drum

relation

to

the

scanning

lens.

Then

install

and

tighten

set

screws

(10

and

11)

while

maintaining

the

alinement.

c.

Install

terminal

block

(30)

with

screws

(31

and

34)

and

lock

washers

(32).

Make

-certain

that

screw

(31)

passes

through

terminal

block

and

spacing

collar

(33).

Install

hexagonal

spacer

nut

(35)

on

-end

of

screw

(34).

d.

Install

P.

C.

cell

mounting

plate

(40)

with

screws

(41)

and

lock

washers

(42),

but

do

not

tighten

screws.

Shift

plate

until

center

point

of

exposed

light

pipe

prism

is

equidistant

from

the

edges

of

the

opening

in

mounting

plate.

•

While

maintaining

this

alinement,

tighten

screws

(41).

e.

Note

small

round

hole

on

one

side

of

P.

C.

cell

assembly

(37).

Mount

cell

assembly

to

cell

mounting

plate

with

small

round

hole

facing

light

pipe

prism.

Install

screws

(38)

and

lock

washers

(39).

Connect

P.

C.

cell

terminal

lugs

to

upper

two

posts

of

terminal

block.

Terminal

lugs

of

cable

assembly

(36)

connect

to

the

lower

two

posts

of

terminal

block.

Install

cable

clamp

(27)

and

P.

C.

cell

cover

assembly

(26).

f.

Insert

scanning

lens

(24)

into

opening

in

mounting

plate

with

tapered

end

facing

sound

drum.

Install

and

tighten

screw

(25)

just

enough

to

hold.

Scanning

lens

must

be

finally

adjusted

after

projector

is

reas-

sembled.

g.

Install

exciter

lamp

socket

parts

(17

through

23).

With

release

cam

(18)

in

extreme

right

position,

install

exciter

lamp

(16);

move

-pin

release

cam

to

the

left

(locking)

position.

Wipe

fingerprints

from

lamp

with

clean

cloth.

Install

the

lamp

cover

as-

sembly

(12).

h.

Install

upper

jockey

roller

assembly

(1)

and

lower

jockey

roller

assembly

(4).

Insert

shaft

of

impedance

roller

assembly

(7)

through

mounting

plate

until

as-

sembly

is

seated

against

plate.

Install

screw

(8),

tightening

.

just

enough

to

hold.

This

roller

assembly

should

impart

a

five

to

six

-ounce

tension,

or

pres-

sure,

on

the

film

as

it

passes

around

the

sound

drum.

Lift

roller

end

of

impedance

roller

assembly

with

an

ounce

spring

scale,

and

check

the

tension.

The

tension

is

adjusted

by

loosening

screw

(8)

and

rotating

entire

roller

assembly

within

the

mounting

plate.

Rotate

assembly

clockwise

to

decrease

tension

and

counter-

clockwise

to

increase

tension.

SOUND

DRUM

1

O

w.*

5-061082-N1

Figure

4.

Using

Adjustment

Gage

-

S

-061082-N1

11

41.

DRIVE

MOTOR

GEAR

HOUSING.

(See

Parts

Catalog

figure

13.)

a.

Install

fiber

washer

(6)

on

shaft

(7)

and

assemble

shaft

into

housing

(8).

Install

cover

(3).

b.

Insert

hub

of

sprocket

(2)

into

coupling

(1),

noting

that

set

screw

must

bear

against

flat

of

sprocket

hub.

Do

not

assemble

coupling

and

sprocket

to

shaft

until

gear

housing

is

fastened

to

drive

motor

(paragraph

42,

step

d).

c.

After

the

unit

has

been

reassembled,

fill

the

gear

housing

with

seven

grams

of

grease

or

until

the

housing

is

filled

to

approximately

one-third

its

depth.

Also,

the

shaft

bearings

in

the

cover

(3)

and

housing

(8)

should

each

be

lubricated

with

four

drops

of

oil.

42.

UNIVERSAL

DRIVE

MOTOR.

(See

Parts

Catalog

figure

12.)

NOTE:

Refer

to

paragimph

92

for

synchronous

motor

repair

instructions

and

to

paragraph

97

for

614CD

motor

instructions.

a.

Apply

a„

light

coating

of

grease

to

the

bearings

(47

and

48)

and

to

the

drive

gear

(46)

during

re-

assembly.

b.

Assemble

motor

field

(52)

into

housing

(55).

Lubricate

bearings

(47

and

48),

step

a,

above,

and

assemble

them

to

armature

(49).

Slip

two

loading

springs

(50)

onto

commutator

end

of

armature

shaft

with

prongs

against

the

bearing

(48).

Inanrt

this

group

into

front

housing

(55)

until

the

bearing

seats

in

the

bearing

recess.

c.

Install

rear

housing

(42)

over

ball

bearing

(47)

on

armature

shaft

and

flush

against

front

housing.

Holes

for

screws

(43)

must

line

up

with

tapped

holes

in

field

coil

retaining

studs,

and

the

tapped

bosses

on

rear

housing

and

front

housing,

for

screws

(19),

must

be

alined.

Secure

the

rear

housing.

Install

drive

gear

(46)

to

end

of

armature

shaft

with

(45).

Lubricate

gear

(46).

d.

Remove

flexible

coupling

from

gear

housing

as-

sembly

(11),

an

d

install

gear

housing

assembly

to

rear

housing

with

screws

(12

and

14)

and

lock

washers

(13

and

15).

Note

that

binding

head

screw

(12)

is

in-

stalled

below

fl

exible

coupling

to

allow

clearance

for

drive

chain

around

sprocket.

It

may

be

necessary

to

rotate

gear

housing

shaft

until

worm

gears

engage,

thus

permitting

gear

housing

to

seat

fully.

Arma-

ture

shaft

must

turn

freely

and

when

pressed

in-

ward

and

released,

it

must

spring

back

due

to

the

action

of

the

loading

springs

(50).

e.

When

installing

motor

brushes,

make

certain

that

concave

face

of

each

brush

matches

diameter

of

commutator.

f.

Install

all

electrical

components,

except

the

gover-

nor,

making

wiring

connections

as

illustrated

in

fig-

ure

5

(CB,

CBM,

CBRM)

or

figure

39.

(614CD).

g.

Install

motor

mounting

bracket

parts

(items

16

through

25)

by

reference

to

Parts

Catalog

figure

12.

h.

Install

governor

brushes

(35)

and

bracket

(41).

Place

governor

(33)

on

armature

shaft.

Governor

should

seat

about

1/32

-inch

from

each

brush

holder.

Install

and

tighten

two

set

screws

(34).

The

motor

speed

adjustment

will

'be

made

just

before

drive

motor

is

installed

to

projector

(paragraph

61).

43.

BLOWER

(VENTILATING)

MOTOR.

(See

Parts

,

Catalog

figure

14.)

Refer

to

figure

14

for

proper

reassembly

of

the

blower

motor,

noting

the

following

precautions:

a.

Apply'

a

light

coating

of

grease

to

the

outer

dia-

meter

of

bearings

before

installation.

b.

Note

'that'

bearing

.loading

spring

(12)

must

be

positioned

inside

the

bearing

recess

of

motor

housing

with

the

prongs

up

against

the

bearing.

c.

When

assembled,

armature

must

revolve

freely

with

a

minimum

of

end

play.

d.

When

installing

blower

wheel

(1),

maintain

an

exact

clearance

of

0.047

-inch

between

blower

housing

cover

(6)

and

inner

face

of

blower

wheel.

Tighten

blower

wheel

set

screw

securely

and

re

-check

clearance.

44.

REAR

MECHANISM

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

15.)

a.

Place

a

drop

or

two

of

oil

on

the

roller

bearing

surface

of

the

idler

pulley

stud

(2)

and

on

each

of

the

idler

shafts

(17)

during

reassembly.

b.

Reassemble

the

rear

mechanism

plate

by

ref-

erence

to

the

exploded

view.

Be

sure

'to

perform

required

lubrication

and

avoid

leaving

fingerprints

on

the

reflector

(12).

Note

new

eccentric

design

of

614CD

adjustable

pulley.

ARMATURE

CAPACITOR

10,000

ULIF,250VDC

BRUSH

HOLDER

RED

-BLACK

BLACK

FIELD

COIL

BLAC

•

BLACK

BRUSH

HOLDER

WHITE

-RED

150

-OHM

RESISTOR

.

BLUE

—WHITE

CAPACITOR

0.5

UF

600

VDC

TUBING

GREEN

-RED

GOVERNO

C.,

uroirtig

l

k50

VDC

3

0

ce

I4

-TUBING

I

CAPACITOR

0.01

UF

250

VDC.

Figure

5..

Drive

Motor

Wiring

DiagraM

—

'

CB,

CBM,

CBRM

.1

12

45.

FEED

AND

TAKE-UP

PULLEYS

-

CB,

CBM

and

CBRM

only.

(See

Parts

Catalog

figure

20.)

a.

Press

bearing

(6)

into

pulley

(7).

Place

ratchet

(5)

within

pulley

with

ratchet

ears

facing

outward

and

place

a

bearing

ball

(4)

into

each

of

the

three

notches

formed

by

the

bending

of

the

ratchet

ears.

b.

Carefully

insert

threaded

end

of

shaft

(1)

through

pulley

until

large

diameter

flange

of-

shaft

presses

firmly

against

ratchet.

The

on

the

flange

must

engage

the

hole

in

the

ratchet.

Invert

this

assembled

group

and

install

extruded

washer

(3)

and

elastic

stop

nut

(2).

c.

The

turning

action

of

the

shaft

must

be

free

in

one

direction

and

locking

in

the

other,

after

nut

(2)

is

tightened.

46.

APERTURE

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

23.)

a.

Secure

film

rail

(1)

to

plate

subassembly

(7)

with

screws

(2),

tightening

screws

just

enough

to

hold.

The

rail

must

be

free

to

move.

Place

guide

rail

gage

(Tool

No.

S

-063196-N2)

on

aperture

plate

as

shown

in

figure

6.

Press

down

firmly

on

gage

so

that

the

two

alinement

pins

on

back

of

gage

fit

snugly

into

aperture

plate

mounting

holes.

Press

gage

upward

(toward

aperture

plate

handle)

to

lock

the

pins

into

mounting

holes.

Hold

film

rail

up

flush

against

the

gage

and

tighten

screws

(2)

securely.

b.

Lay

washers

(6)

over

floating

guide

rail

mounting

holes

in

aperture

plate,

and

place

rail

(3)

on

top

of

washers

so

that

on

underside

of

rail

protrudes

through

hole

in

aperture

plate.

Install

and

tighten

screws

(4).

c.

Invert

aperture

plate

and

place

loop

of

spring

(5)

over

floating

film

rail

pin.

Engage

straight

ends

of

spring

in

slots

in

under

side

of

aperture

plate.

GUIDE

RAIL

Figure

6.

Adjusting

Aperture

Plate

Fixed

Guide

Rail

47.

LENS

HOLDER

ASSEMBLY.

(See

Parts

Catalog

figure

24.)

a.

During

reassembly,

apply

a

light

film

of

grease

to

the

teeth

of

pinion

(15)

and

the

sliding

track

of

lens

holder

mounting

(23).

b.

Fasten

the

top

rail

(20)

to

the

mounting

(23)

with

screws

(21).

c.

Invert

mounting,

place

flat

spring

(19)

in

recess,

and

install

retaining

plate

(16)

with

screw

(17)

and

lock

washers

(18).

Concave

side

of

spring

(19)

must

face

into

the

recess.

d.

Lubricate

teeth

of

pinion

(15),

step

a,

above,

and

insert

pinion

into

mounting.

Install

spring

(13)

.

on

release

rod

(14)

and

insert

rod

into

mounting.

Install

side

rail

(10)

with

screws

(11)

and

lock

washers

(12).

e.

Insert

shaft

of

pressure

plate

holder

assembly

(1)

through

mounting.

Install

spring

(5),

collar

(4)

and

push

arm

(3)

onto

end

of

shaft

and

secure

parts

with

elastic

stop

nut

(2).

f.

Screw

knob

(9)

onto

release

rod.

Install

washer

(8),

concave

face

against

rail

(10),

onto

focusing

pinion

shaft.

Press

knob

(6)

onto

shaft

and

tighten

set

screw

(7).

48.

LOOPSETTER

ADJUSTING

ASSEMBLY.

(See

Parts

Catalog

figure

17.)

a.

If

adjusting

rod

(51)

was

replaced,

new

must

be

pressed

in

0.046

-inch

below

outer

dia-

meter

of

shaft.

Place

spring

(49)

on

rod

and

insert

rod

into

housing

(50).

The

(51)

must

engage

the

approximate

center

of

the

slot

in

housing

and

the

notch

-out

in

end

of

rod

must

face

toward

curved

radius

of

housing.

b.

Insert

spring

(47)

and

stop

(46)

into

small

hole

in

housing

and

install

adjusting

collar

(45)

on

shaft

in

such

a

manner

that

tip

of

engages

teeth

of

collar.

c.

Place

retaining

collar

(42)

on

shaft

and

install,

but

do

not

tighten,

set

screw

(43).

Apply

pressure

to

both

ends

of

assembly

until

(51)

is

in

center

of

slot

in

housing.

Hold

in

this

position

while

tightening

set

screw

(43)

against

flat

of

shaft.

Install

screw

(44).

49.

SPROCKETS,

SPROCKET

GUARDS

AND

GEARS.

(See

Parts

Catalog

figure

17.)

NOTE:

If

the

projector

has

been

completely

dis-

assembled,

the

reassembly

procedures

outlined

in

paragraph

50

must

first

be

accomplished

before

pro-

ceeding

as

directed

below.

a.

Assemble

mounting

(59)

and

spacer

(61)

into

mechanism

plate;

install

an

d

tighten

set

screw

(60).

b.

Assemble

rollers

(58A)

and

screws

(58B)

to

shafts

of

idler

subassembly

(58C).

Assemble

fl

oating

idler

assembly

(58)

and

tension

lever

(56)

to

mechanism

plate

with

screw

(57).

Install

bracket

(53)

with

screw

(54)

and

lock

washer

(55).

Do

not

tighten

screw.

Hook

spring

(52)

between

bracket

(53)

and

lower

end

of

lever

(56).

Adjust

bracket

so

that

all

slack

is

re-

moved

from

spring,

and

tighten

screw

(54)

securely.

c.

Attach

reassembled

loopsetter

adjusting

assembly

(39)

to

mechanism

plate

with

screws

(40)

and

lock

13

washers

(41).

Assemble

loopsetter

assembly

(38)

and

insert

its

shaft

through

mechanism

plate.

Install

arm

(36)

on

end

of

loopsetter

shaft,

tightening

set

screw

(37)

down

against

flat

on

end

of

shaft.

Hook

one

end

of

spring

to

mechanism

plate

with

spring

stud

(35).

d.

Apply

a

very

light

film

of

grease

to

locking

rod

(29),

spring

(30)

and

the

lock

rod

point

grooves

in

the

bracket

(31).

When

assembling

sprocket

guard

into

bracket,

these

two

grooves

should

be

at

top

of

bracket

(toward

open

face

of

guard).

Install

and

tighten

pivot

screws

(28).

Press

bracket

down

so

that

lock

rod

hole

in

shoe

is

accessible,

and

'insert

spring

(30)

and

rod

(29)

into

hole.

Hold

lock

rod

down

with

screw-

driver

while

snapping

bracket

back

up

into

position.

e.

Install

film

stops

(20)

on

flange

of

bearings

in

mechanism

plate

so

that

U-shaped

edge

of

stop

is

centrally

located

in

regard

to

sprocket

guard

mounting

holes.

Install

gears

(17,

18

and

19)

and

install

washers

(16)

and

sprockets

(14)

on

gear

shafts.

Securely

lock

each

sprocket

with

two

set

screws

(15)..

Sprockets

and

shafts

must

turn

freely

with

a

maximum

end

play

of

0.0005

-inch.

f.

Mount

sprocket

guards

(24)

either

under

or

over

sprocket

as

required,

with

two

screws

(25)

and

lock

washers

(26).

Do

not

tighten

screws.

Raise

guard

away

from

sprocket

and

insert

film

clearance

gage

(Tool

Number

S

-061081-N16)

between

sprocket

and

guard

as

shown

in

figure

7.

Close

guard

against

gage

and

tighten

screws

(25)

securely.

Open

guard

and

re-

move

gage.

Repeat

procedure

for

all

three

sprocket

guards.

Attach

film

strippers

(21)

with

the

screws

(22)

and

lock

washers

(23).

-

g.

Install

sleeve

(13)

on

protruding

shaft

of

gear

(17).

Mount

gears

(6

and

10)

to

gear

studs

with

retaining

rings

(7

and

11).

Be

sure

spacer

(8)

is

in

place

on

gear

stud

(9).

h.

Check

to

make

certain

that

all

shafts

turn

freely

with

no

perceptible

end

play.

Lubricate

all

gear

teeth

with

grease

and

install

gear

cover

(1)

and

its

gasket

(5)

with

six

screws

(2

and

3)

and

lock

washers

(4).

FILMS

SPROCKET

FILM

SHOE

SPACING

GAUGE

FILM

SHOE

Figure

7.

Using

Sprocket

Shoe

Film

Clearance

Gage

If

a

new

gasket

(5)

is

being

used,'

a

one

-inch

section

must

be

cut

from

it

to

provide

movement

clearance

for

the

arm

(36)

as

it

protrudes

from

the

casting.

The

two

long

screws

(3)

are-

installed

through

the

holes

closest

to

the

blower

motor

mounting

location.

50.

SHUTTER

AND

SHUTTLE

MECHANISM.

(See

Parts

Catalog

figure

18.)

a.

On

614CB,

CBM

and

CBRM

projectors,

lubricate

wick

(65)

and

pad

(68B)

before

assembling.

Refer

to

paragraph

96

for

614CD

lubrication

parts

reassembly.

b.

Screw

shaft

(59)

into

pivot

bar

(55)

and

attach

bar

to

mechanism

plate

with

screw

(56)

and

washers

(57

and

58).

Spring

washer

(57)

must

be

installed

with

cup

face

toward

bar.

Hold

collar

(50),

beveled

face

up,

in

place

between

arms

of

bracket

(52)

and

slide

bracket

and

collar

up

onto

shaft

(59).

Secure

bracket

with

screws

(53)

and

lock

washers

(54).

Slide

collar

up

until

it

touches

bracket

and

tighten

set

screws

(51).

c.

Fasten

bracket

(26)

to

mechanism

plate

with

screws

(27)

and

lock

washers

(28).

Do

not

tighten

screws.

In-

sert

drive

shaft

(46)

through

bracket

and

into

bearing

in

mechanism

plate.

Make

certain

that

drive

shaft

is

alined

squarely

in

both

bearings,

shifting

bracket

(26)

if

necessary.

Then

tighten

screws

(27).

•

Withdraw

shaft

from

mechanism

plate

to

permit

installation

of

collar

(41),

gear

(43)

and

washer

(45)

on

shaft.

Press

shaft

back

into

mechanism

plate

until

end

of

shaft

is

flush

with

front

face

of

mechanism

plate

bearing.

Press

gear

and

washer

toward

mechanism

plate

until

washer

bears

against

flange

of

bearing.

Tighten

two

set

screws

(44)

securely.

Move

collar

(41)

until

it

touches

bearing

in

bracket

(26)

and

tighten

its

set

screws

(42)

securely.

Shaft

should,

turn

freely

with

a

minimum

end

play

of

0.003

-inch.

Secure

sprocket

(24)

to

shaft

with

set

screw

(25).

d.

Fasten

mounting

plate

(39)

to

mechanism

plate

with

three

screws

(40).

Install

shim

washers

(35)

on

front

camshaft

(34)

and

insert

camshaft

through

its

bearing

in

the

mechanism

plate.

Place

master

block

(Tool

No.

S

-061020-N10)

on

surface

plate

with

front

camshaft

indicator

gage

(Tool

No.

S

-061020-N3)

positioned

above

it

as

shown

in

figure

8.

With

stem

of

gage

just

touching

the

master

block,

adjustindi-

cator

until

pointer

reads

"zero".

Place

indicator

gage

on

machined

surface

of

mechanism

plate

as

shown

in

figure

9.

With

stem

of

gage

just

touching

end

of

front

camshaft,

indicator

should

read

"zero".

Add

or

remove

shims

(35)

on

front

camshaft

until

con-

dition

is

met.

e.

Install

nylon

shim

(33A),

shims

(33)

and

gear

(29)

on

front

camshaft,

alining

slot

in

gear

with

slot

in

camshaft.

Assemble

lock

ring

(32)

into

slot

in

gear

and

camshaft

and

install

screw

(30)

and

lock

washer

(31).

Camshaft

must

revolve

freely

with,

no

noticeable

end

play.

If

necessary,

shim

washers

(33)

must

be

added

or

removed

until

these

conditions

are

met.

f.

Assemble

rear

camshaft

(38)

and

gear

(36)

to

mechanism

plate.

Hub

of

gear

must

face

away

from

mechanism

plate.

Tighten

set

screws

(37)

just

enough

to

hold

the

gear.

g.

Before

installing

shutter

(49),

check

to

make

cer-

tain

that

heads

of

screws

(49B)

are

centrally

located

in

their

elongated

slots

and

are

tightly

screwed

in

14

S

-061020-N3

j[I , l11111i

S

-061020-N10

SURFACE

PLATE

Figure

8.

Setting

the

Camshaft

Indicator

Gage

place.

Install

shutter

and

shutter

gear

(47),

tightening

set

screws

(48)

just

enough

to

hold.

Hub

of

gear

must

face

mechanism

plate.

h.

Turn

front

camshaft

(34)

and

rear

camshaft

(38)

until

the

registration

is

to

the

right

of

the

shaft

(when

facing

mechanism

plate).

Rotate

the

shutter

until

the

shutter

blades

form

a

parentheses

(

)

above

the

camshafts.

Install

shutter

and

intermittent

gage

(Tool

No.

S

-061081-N15)

as

shown

in

figure

10,

and

lock

gage

in

place

by

installing

knurled

nut

(A)

on

front

camshaft.

Loosen

knurled

nut

(B)

and

raise

the

gage

bar

up

against

shutter

blades.

Tighten

knurled

nut

(B)

to

hold

gage

bar

in

this

position.

Tighten

set

rr

Figure

10.

Synchronizing

the

Shutter

and

Intermittent

Mechanism

Figure

9.

Setting

Camshaft

with

Gage

screws

(37

and

48)

securely,

remembering

that

both

camshafts

and

the

shutter

must

revolve

freely

but

with

a

maximum

end

play

of

0.0005

-inch.

Re-

move

the

gage.

i.

Fasten

mounting

bracket

(60)

to

mechanism

plate

with

screws

(61),

lock

washers

(62)

and

flat

washers

(63).

Do

not

tighten

screws

until

aperture

plate

mounting

bracket

has

been

alined

(paragraph

63).

j.

Install

front

cam

(18)

on

front

camshaft

(34).

Install

rear

cam

(17),

retaining

washer

(16)

and

cam

lock

stop

nut

(15)

on

rear

camshaft

(38).

Install

spacer

(22)

and

bushing

(21)

on

shaft

of

pivot

bar

(55).

Hook

spring

(9)

into

hole

in

end

of

shuttle

(23)

and

in-

stall

shuttle

over

cams

and

pivot

bushing.

Sapphire

jewel

inset

in

center

shuttle

tooth

must

be

on

bottom

of

tooth

when

shuttle

is

installed.

Hook

free

end

of

spring

(9)

into

hole

in

bent

arm

at

rear

of

mounting

plate

(39).

Install

spacer

(20)

over

outer

diameter

of

pivot

bushing

(21)

and

install

washer

(19)

up

against

bushing.

Secure

these

parts

with

elastic

stop

nut

(14).

Install

lubricating

disc

(12)

to

front

cam

shaft,

with

in

camshaft

entering

small

hole

in

disc.

Install

counterweight

(11),

inserting

its

into

large

hole

in

disc

(12).

Secure

these

parts

with

special

nut

(10).

Place

one

drop

of

oil

on

each

cam

and

on

parts

mounted

to

pivot

bar

(55).

Do

not

install

covers

(6

and

3)

or

knob

(1)

until

the

shuttle

has

been

pro-

perly

adjusted

(paragraph

63).

51.

SOUND

HEAD

ASSEMBLY-614CBM

AND

CBRM.

(See

Parts

Catalog

figure

37.)

NOTE:

In

the

reassembly

of

the

chassis

subassembly

parts

shown

in

figure

38,

only

the

installation

of

the

rotary

switch

(item

17)

requires

special

attention,

as

follows:

Install

switch,

but

do

not

tighten

switch

nut.

Mount

switch

plate

(16)

to

switch

shaft

with

threaded

stud

of

plate

towards

top

of

chassis.

Tighten

two

set

screws

(15).

When

remaining

chassis

parts

have

been

assembled,

hold

switch

plate

(16)

in

exact

vert-

ical

position

and

rotate

switch

(17)

until

central

detent

position

is

located.

Then

tighten

switch

nut.

15

a.

Refer

to

Parts

Catalog

figure

37.

Secure

chassis

subassembly

(61)

to

sound

head

mounting

plate

(64)

with

three

screws

(59)

and

lock

washers

(60).

Install

terminal

block

(54)

with

screws

(52)

andwashers

(53).

b.

Insert

stabilizer

housing

assembly

(11)

carefully

into

and

through

mounting

plate

(64).

Insert

scanning

lens

(24)

just

enough

to

hold.

Rotate

the

stabilizer

housing

until

its

light

pipe

prism

is

perpendicular

to

the

scanning

lens

center

line.

c.

Insert

sound

drum

adjustment

gage

as

shown

in

figure

4,

and

move

the

stabilizer

housing

in

or

out

until

inner

face

of

sound

drum

just

touches

small

projection

on

end

of

gage.

Recheck

to

make

certain

that

light

pipe

prism

is

perpendicular

in

relation

to

scanning

lens,

and

tighten

set

screws

(9

and

10)

securely.

d.

Install

retracting

lever

(57)

with

stop

nuts

(55)

and

plain

washers

(56).

Install

photocell

mounting

plate

(51)

with

screws

(48)

and

lock

washers

(49),

but

do

not

tighten

screws.

Shift

plate

until

center

point

of

exposed

light

pipe

prism

is

equidistant

from

the

edges

of

the

opening

in

the

mounting

plate.

Maintain

this

alinement

while

tightening

screws

(48).

e.

Note

the

small,

round

hole

in

one

side

of

the

photocell

assembly

(50).

Attach

the

photocell

assembly

to

the

mounting

plate

with

this

hole

facing

the

light

pipe

prism,

tightening

the

two

screws

(48),

with

lock

washers

(49),

securely.

Connect

photocell

terminal

lugs

to

the

two

inner

terminal

block

screws.

The

two

outer

screws

of

the

terminal

block

are

used

to

connect

the

terminal

lugs

of

the

cable

assembly

(37).

Install

photocell

cover

(47)

with

screw

(45)

and

washer

(46).

f.

Install

the

tube

socket

(44),

leadwire

assembly

(38),

cable

assembly

(37),

and

input

transformer

(31),

making

the

wiring

connections

as

illustrated

in

figure

30

(614

CBM

sound

head

schematic)

or

figure

31

(614

CBRM

sound

head

schematic).

Install

tube

(28)

and

shield

(27).

NOTE:

The

614

CBRM

projector

is

equipped

with

a

pilot

lamp

(25)

and

socket

(26)

to

indicate

recording

operation.

Install

these

parts

and

connect

leadwires

per

figure

31.

In

the

614

CBM

projectors,

the

lamp

socket

opening

is

closed

with

a

button

plug.

g.

Install

shield

(22)

with

screws

(21).

Install

the

exciter

lamp

socket

parts

(13

through

20).

The

lamp

socket

leadwire

shielding

is

grounded

to

the

sound

head

mounting

plate

with

screw

(16)

and

washer

(17).

The

short

socket

leadwire

is

soldered

to

the

rotary

switch

(figure

30

or

31)

and

the

long

leadwire

is

inserted

up

through

the

cable

opening

in

the

sound

head

chassis.

h.

Install

the

upper

and

lower,

jockey

roller

assem-

blies

(3

and

4)

onto

studs

(5)

with

washers

(2)

and

retaining

rings

(1).

Insert

shaft

of

impedance

roller

assembly

(8)

through

the

mounting

plate

until

assembly

is

seated

against

the

plate.

Install

screw

(7),

tighten-

ing

just

enough

to

hold.

The

impedance

roller

as-

sembly

should

impart

a

five

to

six

ounce

tension,

or

pressure,

on

the

film

as

it

passes

around

the

sound

drum.

Lift

roller

end

of

impedance

roller

with

an

ounce

spring

scale

and

check

the

tension.

Tension

is

adjusted

by

loosening

screw

(7)

and

ro-

tating

the

entire

roller

assembly

within

the

mounting

plate

—

clockwise

to

decrease

tension,

and

counter-

clockwise

to

increase

tension.

Tighten

screw

(7)

after

adjusting.

i.

With

release

cam

(15)

in

extreme

right

position,

install

exciter

lamp

(13)

and

move

release

cam

to

the

left

(locking)

position.

Wipe

fingerprints

from

lamp

with

a

clean

cloth,

and

install

lamp

cover

(12).

j.

Sound

head

assembly

installation

is

outlined

in

paragraph

58.

If

the

scanning

lens

was

removed

or

replaced,

it

will

be

necessary

to

perform

the

aline-

ment

adjustments

outlined

in

paragraph

85.

52.

INSTALLATION

OF

MAJOR

COMPONENTS.

NOTE:

Refer

to

projector

operation

book

for

in-

structions

pertinent

to

the

installation

of

such

items

as

the

reel

arms,

pressure

plate,

aperture

plate,

condenser

lens

assembly,

projection

lamp

parts,

etc.

53.

LENS

MOUNTING

ASSEMBLY.

(See

Parts

Catalog

figure

16.)

a.

Make

certain

that

lens

holder

rails

of

mounting

are

free

from

dirt

and

grit

and

that

they

are

lubri-

cated

with

a

film

of

grease.

b.

Attach

lens

mounting

assembly

(49)

to

mechanism

plate

with

two

screws

(50)

and

the

screw

(51)

and

lock

washer

(52).

Insert

guide

disc

(48),

spring

(47)

and

friction

button

(46)

into

proper

holes

in

lens

mounting.

54.

LENS

HOLDER

ASSEMBYLY.

(See

Parts

Catalog

figure

16.)

a.

Install

lens

holder

assembly

(45)

on

lens

mounting

assembly

and

slide

holder

in

about

halfway.

Press

down

on

friction

button

(46)

and

slide

lens

holder

in-

ward

as

far

as

it

will

go.

b.

Turn

focusing

knob

to

engage

pinion

teeth

with

focusing

rack

on

underside

of

lens

holder.

Press

the

side

rail

(item

10,

Parts

Catalog

figure

25)

flush

against

the

assembly

and

tighten

the

side

rail

mounting

screws

securely.

Turn

focusing

knob

back

and

forth;

lens

holder

should

move

freely

without

excess

slack.

c.

Loosen

set

screw

in

focusing

knob,

press

knob

in

against

its

spring

washer,

and

tighten

set

screw.

With

lens

holder

racked

all

the

way

into

the

mounting,

attach

lens

holder

stop

plate

(item

42,

Parts

Catalog

figure

16)

with

screws

(43)

and

lock

washers

(44).

55.

FEED

AND

TAKE-UP

PULLEYS.

(See

Parts

Catalog

figure

16.)

a.

Apply

a

very

light

film

of

grease

to

both

sides

of

washers

(23

and

27)

and

assemble

pulleys

(22

and

26)

and

their

washers

to

mechanism

plate.

b.

Install

sprockets

(20

and

24)

on

pulley

shafts,

hubs

facing

outward,

and

secure

with

set

screws

(21

and

25)

turned

down

tightly

against

fl

ats

on

pulley

shafts.

Each

group

should

rotate

freely

with

a

mini-

mum

(not

more

than

0.0005

-inch)

of

end

play.

Engage

drive

chain

(19)

with

teeth

of

both

sprockets.

c.

Install

drive

sprocket

(17)

to

feed

sprocket

shaft,

hub

facing

outward,

and

secure

with

set

screws

(18).

d.

Fasten

assembled

drive

chain

idler

assembly

(28),

loosely

to

mechanism

plate

with

screws

(29),

flat

washers

(31)

and

lock

washers

(30).

Adjust

position

of

idler

roller

bracket

so

that

there

is

a

small

amount

of

slack

in

drive

chain,

and

tighten

screws

(29)

securely.

Proper

installation

of

chain

and

sprockets

16

DRIVE

SPROCKET

DRIVE

CHAIN

'REWIND

SPROCKET

TAKE-UP

SPROCKET

IDLER

ROLLER

BRACKET

Figure

11.

Drive

Chain

and

Sprockets

Installed

is

shown

in

figure

11.

e.

Apply

a

coating

of

grease

to

entire

length

of

drive

chain.

56.

REAR

MECHANISM

PLATE.

(See

Parts

Cata-

log

figure

6.)

Attach

rear

mechanism

plate

assembly

(28)

to

front

mechanism

plate

assembly

(31)

with

attaching

screws

(29)

and

lock

washers

(30).

57.

BLOWER

MOTOR

AND

COVER

ASSEMBLY.

(See

Parts

Catalog

figure

6.)

Fasten

the

blower

motor

and

cover

assembly

(25)

to

rear

mechanism

plate

with

seven

screws

(26)

and

lock

washers

(27).

Wiring

connections

will

be

made

after

all

major

components

have

been

installed.

58.

SOUND

HEAD

ASSEMBLY.

(See

Parts

Catalog

figure

6.)

a.

Insert

assembled

sound

head

(10)

into

its

mounting

on

the

mechanism

plate

and

secure

in

place

with

seven

screws

(11)

and

lock

washers

(12).

The

upper

and

lower

jockey

rollers

should

be

held

in

a

raised

position

during

insertion

of

sound

head

assembly

so

that

they

will

rest

on

their

respective

stop

studs

after

installation.

b.

Wiring

connections

will

be

made

after

all

major

components

are

installed.

59.

FRONT

AND

REAR

MECHANISM

PLATE

IN-

STALLATION.

(See

Parts

Catalog

figure

2.)

a.

Carefully

insert

the

partially

assembled

front

and

rear

mechanism

plate

(15)

into

the

projector

case

(29).

Vibration

mounts

at

top

of

mechanism

plate

must

be

alined

with

two

screw

holes

in

top

of

case

so

that

screws

(16)

can

be

installed.

Mounts

at

front

and

rear

edges

of

mechanism

plate

must

be

positioned

below

brackets

within

projector

case

so

that

hex

head

screws

(26)

can

be

installed.

b.

Install

all

hardware

parts

(18

through

28)

and

make

certain

that

all

shielded

ground

wire

cables

(item

15,

Parts

Catalog

figure

6)

are

properly

con-

nected.

c.

Secure

the

flywheel

(7,

Parts

Catalog

figure

2)

to

the

sound

head

stabilizer

shaft

with

screw

(8).

d.

Install

fuseholder

(2)

and

fuse

(1).

e.

Install

special

nut

(13)

and

knob

(14)

on

upper

end

of

loopsetter

rod.

Knob

should

extend

about

3/32

-inch

above

surface

of

case.

Tighten

nut

up

against

bottom

of

knob.

f.

Install

lampholder

(item

3,

Parts

Catalog

fig.

16.)

60.

SWITCH

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

a.

Install

switch

panel

casting

of

switch

plate

as-

sembly

(30)

to

rear

edge

of

projector

case

with

three

screws

(31)

and

lock

washers

(32).

b.

Thread

the

heavy

shielded

cable

properly

within

the

projector

case

near

the

top

of

the

mechanism

plate.

Proper

wiring

connections

are

shown

in

the

projector

schematic

wiring

diagram,

figure

27,

28,

29

or

41.

c.

Note

that

one

branch

of

the

heavy

shielded

cable,

containing

two

black

leadwires,

must

emerge

through

the

projection

lamp

socket

opening

on

the

front

side

of

the

mechanism

plate.

The

shielding,

at

this

point,

is

grounded

to

the

mechanism

plate

just

above

the

opening

by

a

screw,

flat

washer

and

lock

washer.

Also,

make

the

connections

to

the

lampholder

in

the

upper

left-hand

corner

of

the

mechanism

plate

and

intertwine

the

small

shielded

wires

from

the

sound

head

around

the

heavy

shielded

cable

and

over

to

the

switch

panel.

Connect

blower

motor

leadwires

as

shown

in

the

proper

projector

wiring

schematic.

d.

Install

the

projection

lamp

parts

(10

through

14),

making

the

proper

wiring

connections.

e.

Install

the

condenser

bracket

portion

of

the

switch

plate

assembly

(30)

with

the

screws

(33

and

34)

and

lock

nuts

(35).

Make

the

wiring

connections

to

the

fuseholder

and

the

pins

of

the

power

receptacle.

Recheck

all

wiring

connections

against

the

proper

schematic

wiring

diagram

to

make

certain

that

they

are

correct.

61.

DRIVE

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

6.)

a.

Connect

projector

power

cable

between

power

receptacle

and

105

to

129

-volt

AC

power

source.

b.

Connect

motor

plug

to

its

receptacle

on

inside

of

switch

plate

assembly,

and

turn

OFF

-MOTOR

-LAMP

switch

to

MOTOR

position.

NOTE:

Step

c,

following,

applies

only

to

the

universal

-

type

drive

motor.

When

installing

the

synchronous

drive

motor,

step

c

is

eliminated

completely

and

con-

tinue

with

steps

d

and

e.

c.

With

motor

running,

chebk

the

motor

speed

by

means

of

a

tachometer

on

the

motor

armature

shaft.

spee

•

s

o

•

e

54

revo

u

ions-

r

-minute

o

a•just

motor

spee•,

oosen

a•jus

men

nut

(B),

figure

12,

on

the

governor.

Turn

adjustment

screw

(A)

clockwise

to

increase

speed

or

counterclockwise

to

decrease

speed.

Tighten

nut

(B)

securely

after

ad-

justment

has

been

made.

Turn

switch

to

OFF

position.

d.

Disconnect

motor

plug,

and

install

motor

(20)

to

mechanism

plate

with

four

screws

(21),

lock

washers

17

O

CD

O

0

CD CD

O

0

0 0

O

A

Figure

12.

Drive

Motor

Governor

Adjustment

(22)

and

plain

washers

(23).

While

motor

is

being

installed

into

place,

drive

chain

(24)

should

be

hooked

around

sprocket

on

motor

gear

housing

shaft

and

the

sprocket

to

the

right

of

loopsetter

rod.

There

should

be

a

small

amount

of

slack

in

the

drive

chain.

This

slack

is

obtained

by

positioning

the

motor

properly

and

by

adjusting

the

position

of

the

idler

pulley

bracket

at

the

top

of

the

motor

casting.

Be

sure

to

tighten

all

screws

securely

after

adjustment.

e.

Install

threading

knob

(13)

with

set

screw

(14).

With

the

shuttle

tooth

at

maximum

protrusion

po-

sition,

the

words

"THREADING

KNOB"

should

be

in

a

horizontal

plane.

Reconnect

motor

plug.

62.

AMPLIFIER

AND

SPEAKER

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

a.

Lift

assembled

amplifier

and

speaker

assembly

(22)

as

close

as

possible

to

projector

to

permit

con-

nection

of

jack

plug

to

photocell

input

connector

and

leadwire

spade

lugs

to

proper

projector

terminals.

See

amplifier

schematic

wiring

diagram,

figure

32,

33,

or

42.

b.

Lift

amplifier

and

speaker

assembly

carefully

up

into

position

and

press

into

place

against

pro-

jector

case.

Install

six

screws

(23)

and

lock

washers

(24)

at

top,

front

and

bottom

of

amplifier,

and

three

screws

(25)

and

lock

washers

(26)

at

rear

edge

of

switch

panel

casting.

63.

ADJUSTING

SHUTTLE

AND

APERTURE

PLATE

MOUNTING

BRACKET.

a.

For

proper

operation,

the

center

tooth

of

the

shuttle

must

protrude

0.031

-inch

(+

0.002,

-

0.001

-

inch)

beyond

the

surface

of

the

aperture

plate.

Attain-

ment

of

this

precise

dimension

requires

that

the

aperture

plate

mounting

bracket

(item

60,

Parts

Catalog

figure

18)

be

alined

in

a

straight

perpendicular

plane

in

relation

to

the

horizontal

position

of

the

shuttle.

In

order

to

perform

this

adjustment,

it

is

necessary

to

remove

the

lens

holder

assembly

(para-

APERTURE

PLATE

APERTURE

PLATE

MOUNTING

BRACKET

ASSEMBLY

BRACKET

MOUNTING

SCREW

CENTER

SHUTTLE

TOOTH

MUST

EXTEND

.031

INCH

BEYOND

APERTURE

PLATE

SHUTTLE

O°

CAMS

BRACKET

MOUNTING

---,-

SCREW

Figure

13.

Horizontal

Position

of

Shuttle

and

Cams

graph

9)

and

lens

mounting

assembly

(paragraph

10)

from

the

mechanism

plate.

Leave

the

aperture

plate

in

the

projector.

b.

Turn

threading

knob

clockwise

until

the

center

shuttle

tooth

is

at

its

maximum

protrusion

position.

The

cams

should

be

parallel

to

the

shuttle

as

shown

in

figure

13.

c.

Place

shuttle

alinement

gage

(Tool

No.

S

-061081-

N8,

figure

2)

on

a

surface

plate

with

gage

plunger

contacting

the

plate.

If

necessary,

loosen

gage

dial

set

screw

and

rotate

dial

until

indicator

points

exactly

to

"zero"

reading.

Then

tighten

dial

set

screw.

d.

As

indicated

in

figure

14,

place

gage

against

aperture

plate

with

gage

plunger

contacting

center

shuttle

tooth.

The

gage

indicator

reading

should

not

be

less

than

30

nor

more

than

33

(indicating

a

pro-

trusion

of

0.030

to

0.033

-inch).

e.

To

adjust

shuttle

tooth

protrusion,

the

aperture

plate

mounting

bracket

must

be

moved

back

(away

from

the

lens)

to

increase

the

amount

of

protrusion

or

forward

(toward

the

lens)

to

decrease

the

amount

of

protrusion.

Before

tightening

aperture

plate

mount-

ing

bracket

screws,

check

by

eye

to

make

certain

that

bracket

is

perpendicular

to

horizontal

line

through

18

Bell&Howell 614CB Operating instructions

Popular Projector manuals by other brands