RCAVICTOR STR-6 User manual

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sTR-6, sTR-g (Ch. RS-l 66, RS-167)
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GENERAL INFORMATION
The RCA ModelsSTR-6 and STR-8 tape recorders reproduce stereophonic sound from
prerecorded stereophonic tapes. Conventionaltapes (either half-track or full track) may also
be used. In addition, the recorder will rnake monaural recordings.
The amplifier hgs two channels, each channel having four stages of playback amplification .
Switching in the third stage permits full power output with either stereophonic or conventional
tapes.
. Tape motion is controlled by three push buttons and a Stop bar. A fourth push button
(Monitor) actuates the record-playback switches only. When this fourth push button is depressed ,
the recording level may be set before the tape is set into motion.
These recorders operate from a 60-cycle, ll5-volt, AC supply only. Before connecting
to your line supply, be absolutely certain the supply agrees with the foregoing specifications.
Manufactured by:
Radio Corporation of America
RCA Victor Radio and "Victrola' Division
Camden 8, New Jersey
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This molerial compiled and published by
HOWARD lA/. SAMS & CO., lNC., lNDlANApOtlS 6, INDIANA
c369
Copyright 1959 . All Rights Reserved
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DATE 2-59 sET 430 TOLDER I2

FIG. I TOP VIEW OF TRANSPORT MECHANISM WITH ESCUTCHEON REMOVED
SPEC IF ICAT IONS
Tape Used Power Output (Each Channel)
L/ 4" etereo (twin-track,. in-line) or conventional Undistorted, 3 wattsl maximum , 4.i watts.
(half-track or full track)
Tape Speeds Frequency Response
g 3/ 4 or 1 l/ 2 ips ?0 to I5,000 cycles from prerecorded tape
Power Supply Bias and Oscillator Frequency
115 volts, 60 cycles, 150 watts 60 kc t 5 kc
OPERAT ING INSTRUCT IONS
Stefeophonic Playback duringplaybackandmaybesetinany position.
Stereophonic tape recordings for in-line heads MOnaUfal playbaCk (Half-Tfa6k Of FUll TfaCk)
are required. A right-channel speaker system must
be connected to Right Channel speaker jack. 1. Same as "Stereophonic playback" except
r. Turn stereo-slngre/ Mark switch to stereo 3n!"2o,*ffff1,3;.u"n"""" singte instead of
Single position.
2. Depress stereo push button. Monaural Recording from Microphone or
Radio-Phono Jack
3. Depress Play push button.
4. AdJust Loudness and rone contrors. t $H-t*-#:::.ll;l;1*Y:ffl"rilH:#l
NorE: voice and Music push buttons have no effect ;il"t*Tf. when connected to the output of an
Page 2

2. Turn Stereo-Single/ Mark switch to Stereo-
Single position.
3. DepreseVoiceor Musicpush button, depend-
ing on the type of material being recorded.
4. Depress Monitorpush button and set record-
ing level. Recording level indication is glven
bytwo neon bulbs. Adjustthe recording level
lndicators by rotating the Loudness control.
For proper adjustment, the Normal indicator
just flashes. When the Loudness control is
advancedtoofar, the Overload indicator will
flash, and the recording will be distorted.
To prevent overload, lower the Loudnegs control
until the Overload indicator does not flash.
5. Holddown the Monitor push button and at the
same time depress the Play push button ,
NOTE: SingleandStereo push buttons, and Tone con-
trol have no effect durlng recordlng and may be
set in any position.
Public Address Recording
These recorders car be used with a public ad-
dress system in the following manner:
l. Insert microphone output plug into Micro-
phone jack.
2. Inserthigh-impedance input of public address
amplifier into Radio-Phono Jack.
3. Turn Stereo-Single/Mark switeh to Stereo-
Single position.
4. Depress Monitor push button and adJust re-
cording level.
5. Depress Voice or Music push button, as de-
sired.
6. To start recording, hold down the Monitor
pushbuttonand at ttte same time depress the
Play push button.
High-Speed Forward or Rewind Push Button
l. Torapidlyadvancethetape, depressthe push
button witll the arrow pointing to the right .
This push button is the High Speed Forward
control.
2. Torapidlyreversethetape, depressthepush
button with the arrow pointing to t}te left.
Thls push button is the High Speed Rewind
control.
Stop Bar
1. This control stops the tape motion. Always
depress the Stop bar before depressing any
push button.
2. The Stop bar should be depressed before turn-
ing the Power-Speed control.
Tape Counter
Tape counter (3?) provides complete selectivity
and immediate location of any part of a recorded tape .
By turning the counter to zero before beginning each
reel, the numerals on the counter w'ill serve as a
ready reference to any portion of the recorded tape.
To Erase Tape
When the Monitor and Play push buttons are
depressed, the erase head is automatically position-
ed, erasing any previous recordlngs whlle a new one
is being made. Material no longer needed may be
erased, without recording, by depresslng the Monitor
and Play push buttons and turning the Loudnegs control
to its minlmum position. One track is erased at a
time. To erase t}le second track, reverse the reels
and repeat the foregoing procedure.
Power-Speed Control
This control turns on the recorder and at the
same time selects the desired recording or playing
speed.
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D I SASSEMBLY INSTRUCT IONS
To Remove Tubes
Model STR-6: Remove cabinet bottom and leg
assemblyfrom cabinet by removing eleven wood
gcrews.
Model STR-8: Removeplate (screen) frombot-
tom of cabinet by removing six wood screws.
To Remove Tape Transport Mechanism
from Cabinet
l. Removescreenor cabinetbottom as describ-
ed in "To Remove Tubes. "
Remove control knobs.
Remove four screwe holding escutcheon and
lift off escutcheon.
5. Remove microphone housing (8), securedby
two gcrews.
6. Remove four mounting screws at cornergof
motorboard (12).
?. Remove power cord by removing clamp at
rear of storage compartment. Push power
cord through hole in cabinet.
8. Grip tape transport mechanism with fingers
at opening in motorboard (12) and lift.
3.
4.
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2. Disconnect speaker leads.
Page 3

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FIG. 2 BOTTOM VIEW OF TRANSPORT MECHANISM
To Remove Amplifier Chassis from Tape
Transport Mechanism
1. Remove tape transport mechanism, as des-
cribedin "ToRemove Tape Transport Mech-
anism from Cabinet. "
2. Remove pilot lamp socket from its mounting
bracket.
3. Disconnect ptayback and erase head connec-
tors, and power socket.
4. Remove two screws holding radio/phono input
jack to motorboard. push bracket through
hole in motorboard.
5. Remove hexnutholding microphone input jack
to bracket on motorboard.
6. Remove screws holding amplifier chassis to
motorboard.
MECHAN I CAL ADJU STMENTS
Brake Arms
Right-hand brahe arm (65) and left-hand brake
arm (98) should engage thetr drive pulteys (bl) and
(124) vrith the same force and at the sime [ime. The
brake pads should contact the pulleys with the max-
imumpad area. This is accomplished by bending the
endof brat<erelease slide (67). To gain access to the
end of brake release slide (67), remove main drlve
pulley (79).
Tape Pressure Roller
Tapepressure roller (22) and capstan shaft (1?)
Page 4
controlthepressureonthetape. Thispressure is de-
rivedmainlyfrom pressure roller arm formed spring
(57) ontape pressure roller arm (48). One of the moun-
ting holes on pressure roller arm formed spring (b?)
is slotted to permit adjustment. The springtension
is determined by measuringthe force necessary to pull
the tape past capstan shaft (tT). With the recorder
stopped and Play push button depressed, a tension of
32 ounces should be required to cause tape slippage.
Toomuchpressurewill make the latch difficult to de-
press in the Play position.

Erase head (15B) should be so positioned that its
face ia parallel with the holes in mounting bracket (15C)
andparallel to the tape. The vertical height of the head
should be 0.584", measured from the mounting bra-
cket to the top of tle erase head gap. If the head is too
high, the recording may not be erased completely; if
the head is too low, part of the lower track may be
erased.
Record-Playback Head
l. Threadastandardfrequency tape (RCA 12-5-
61T or equivalent) on the tape recorder. Con-
nect output meter acrosg left-channel speaker
lead terminals.
2. Record-playbackhead(i5A) shouldbe so pos-
itionedthatthe front of the head is parallel
to the edge of mountlng bracket (l5C).
3. Adjust right-hand tape guide post (18) for
maximum output while playlngthe 1,000-cycle
portion of the tape. Adjust left-hand tape
gutde post (18) so that the tape is approximate -
lylevel across front of head. Repeat right-
hand tape guide post (18) adjustment.
4. AdJust right-handhead mounting screw (15R)
for maximum output. Left-hand head mount-
ing screw (l5L) must be tight.
Recording Level I ndicator
Recording level settings are obtained by two neon
bulbs, Type NE-51. .Adjustment of tlrese bulbs are
necessaryonlywhenthe bulbs or components in these
circuitsarereplaced. Thefiringlevelon the record-
ing indicator is adjusted by means of two adjustable
controls (R3) and (R4). The controls are accessible
aJter tlte cabinet bottom cover 1g removed.
To adjust firing level of recording indicators,
the mechanism must be in the cabinet. Refer to
Fig. 3 for location of adjustments.
l. Connectan audio signal generator to the ra-
dio-Phono jack. Set generator frequencyto
approximately l, 000 cycles.
2. Connect a VTVM to teet point TP-3.
3. Depress Monitor push button.
4. Ground test point TP-I. Adjust generator
output and,/or tape recorderLoudness con-
trolto provide approximately 2. 3 volts rms
reading on the VTVM.
ELECTR ICAL ADJU STMENTS
5. Bemove ground from test point TP-l and ad-
justNormal lndicator control (Ra) by turning
counterclockwise and then clockwise until
the Normal neon bulb barely lights.
6. Ground test point TP-I. Adjust generator
output andr/ or tape recorder Loudness control
toprovide approximately 6. 8 volts rms read-
ing on the VTVM.
7. Remove ground from test point TP-l andad-
just Overload indicator control (R3) byturn-
ing counterclockwise and tlen clockwise
until the Overload neon bulb barely lights.
Gain Control
Gain control (R5) enablesthe volume levelof the
external speakers to be equallzed with the volume level
of the internal speakers.
To set the gain control:
1. Thread a standard frequency tape on the re-
corder.
2. Connectanoutputmeter across the terminalg
of the left channel speaker contained in the
recorder.
3. Turn on recorder and allow to warm up for
geveral minutes. Set volume control at nor-
mal playrng position. Set switch (M9) to
Stereo-Single.
4. Depress the Stereo and Play push buttons
and, while playing the 1,000-cyclepartof the
tape, note the output meter reading.
5. Depress Stop bar and reverse tape reels to
turn tape upside down.
6. Disconnect the output meter from the re-
corder and connect to the terminal of right
channel speaker contained in the companion
speaker unit.
7. Depress the Stereo and Play push buttons
and, while playing the l,000-cycle part of
the tape, note the output meter reading.
8. Adjust gain control (Rb) to obtain the same
indicatlon on the output meter as $/as noted
in Step ?. For locationofgaincontrol, refer
to Fig. B.
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AUD IO-
OVER-LOAD NORMAL
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RECORDING
INDICATOR
A RIGHT CHAN.
- GAtN EQUALtzER
FIG. 3 AMPLIFIER ADJUSTMENTS
Page 5

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FIG. 4 BONOM VIEW OF TRANSPORT MECHANISM WITH MOTOR AND AMPLIFIER REMOVED
Recording Bias Voltage
Recording bias is obtained from the oscillator
circuit of V4 and Ll and applied to the recording sig-
nal at the head input. The recording bias level re-
quires adjustmentonlywhena component in the oscil-
lator head circuit is replaced or if. C27 adjustment
is altered.
To adjust recording bias level, the recorder
must be in the cabinet. For location of adjustments ,
refer to Fig. 3.
1. Depress Monitor push button and allow re-
corder to warm up.
2. Connect a calibrated oscilloscopefrom test
point TP-2 to chassis ground.
NOTE: Use a low-capacity probe withthe oscilloscope
in order to minimize clrcuit loading.
The head, capstan, and pressure roller may
accumulate tape coating, worn off as the tape passes
these parts. Clean the head surfaces, capstan, and
pressure roller with a soft cloth. Never clean the
recording head with a brush, as this could mar the
lamination.
3. Adjust C2? for an indication of 1gb votts peak-
to-peak on the oscilloscope.
NOTE: The bias signal is 60 kc and cannot be accu-
rately measured with an audio output meter.
Oscillator Frequency and 0utput Level
The oscillator frequency is G0 tc t b kc and is
obtained by adjusting bscillator coil Ll.
The oscillator output is used for both the re-
cording bias and erase voltage. To adjust recording
bias level, see "Recording Bias Voltage. " Erase
voltage requires no adjustment, but should be greater
than 500 volts peak-to-peak as measured at the jun-
ction C2? and C31 with a calibrated oscilloscope.
NOTE: A low-capacity probe must be used with the
oscilloscope in order to mlnimize circuit load-
ing.
CLEAN ING
der the plastic escutcheon.
The rubber-tired idler wheels and
roller must be kept free of oil or grease.
oil orgrease from rubber parts, use a soft
alcohol or carbon tetrachloride.
Be careful to prevent cleaning fluids
moving the lubricant from Oilite bearings.
pressure
To clean
cloth and
from re-
Page 6
Occasionally clean any foreign matter from un-

AII rotating parts are provided with generous
size Oilitebearings, whichare factory lubricated and
normally require no furtier attention. Ilowever ,
should lubrication be required, use sewlng machine
oil sparlngly.
Otherbearings should be lubricated with Staput
#320.
Slidingsurfaces should be lubricated vrith Cos-
molube #1.
LUBR ICATION
TROUBLE CHART
Symptom Cause Remedy
Pushbuttongfail to latch into
poeition. 1. Push button latch tension
spring (92) broken or loose .1. Replace push button latch tension
spring (92).
Tape breaks. 1. Brakes improperlyadJusted .1. See "Brake Arms Adjustment" un-
der "Mechanical Adjustment. "
Excessive mechanical noise
while ldling. 1. Take-up belt tension roller
(84) touches take-up drive
purley (51).
l. Adjust position of take-up arm
stop (Ul) to provlde clearance.
No drive on take-up reel. l. Take-up drive belt (80) bro-
ken.
2. Take-up arm spring (114)
looge.
3. Bearing of right-hand reel
hub shaft (2) binds.
4. Bearing of take-up arm as-
sembly (86) or take-uP belt
tension roller (84) binds.
1. Replace take-up drtve belt (80) .
Hook tale-up arm epring (U4)
back into position.
Wipe foreign matter from bearlng
gurface and shaft with a clean
cloth. Lubricate with one droP of
#10 motor oil.
Wlpe foreign matter from bearing
surface and shaft with clean cloth .
Lubricate with one drop of #10
motor oil.
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2.
3.
4.
Tape overruns or spills when
Stop bar ie depressed durlng
fast forward or rewind.
1. Brakee not adJueted Proper-
ly.
2. Brake pad worn out.
3. Unequal tensionof brake arm
springs (99) and (66).
l. See "BrakeArms Adjustment" un-
der "Mechanical Adjustments. "
2. Replace brake pad.
3. Replace brake arm sprlngs (99)
and (66).
Play push button does not de-
preB8. l. Interlock bar tension sprlng
(10) loose. 1. Refasten interlock bar tension
spring (10).
On-Off/ Speed Change control
does not turn. 1. Interlock bar tension opring
(10) loose.
2. Interlockbar (9) bentandre-
malns engaged witl interlock
detent couar (4I).
3. Defective On-Off switch
M13.
1. Refasten interlock bar tengion
spring (10).
2. Re-form interlock bar (9).
3. Replace On-Off gwitch Ml3.
No fast forward or rewlnd.
Page 7
l. Rewind slide return sPring
(102) or fast forward sllde re-
turn spring (148) loose or bro-
ken.
2. Fast forward drive roller
(?7) or rewind drive roller
(10?) missing.
l. Replace rewind elide return
apring (102) orfastforward slide
return spring (148).
2. Replace fast forqtard drlve roller
(??) or rewind drive roller (10?).
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FIG. 5A EXPLODED VIEW OF PARTS ABOVE BASEPLATE
Page 8

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EXPLODED VIEW OF PARTS BELOW BASEPLATE
FIG. 58

TR0UBLE CHART (Con't)
Symptom Cause Remedy
Speed variation, or wow. l. O11 orforeign matter on cap-
stan shaJt (17), tape pressure
roller (22), speedchange id-
ler wheels (95) and(97), main
drive pulley (79), and main
drive belt (13?).
1. Clean contact surfaces with
cleaning fluid.
3.
4.
2.
3.
4.
Setscrewin motor drive pul-
ley (126) and capstan drive
flywheel (87) loose.
Pressure roller arm formed
spring (5?) loose or broken .
Insufficient tape pressure
roller pressure on capstar
shaft (U).
2. Tighten setscrew.
Replace pressure roller arm
formed spring (5?).
See "Pressure Roller Adjust-
under "Mechanical Adjustments. "
Fatls to record or play. l. Tape pressure pad (54) fails
to holdtape against heads due
to mlssing return spring
(143).
2. Right-hand tape guide post
(18) improperly positioned .
Open eircuit in head or con-
necting cable.
Defect in amplifier circuit,
5. Record actuating rod (64)
missing.
1. Replace return spring (143).
See "Record-Playback Head Ad-
justment" under "Electrical Ad-
justments. "
Ifhead and connecting cable are
open, replace.
Check amplifier circuit for faulty
2.
3.
4.
3.
4. components.
5. ReplaeeRecord actuating rod
(64).
Fails to erase- l. Open coil in erase head
(l5B).
2. Defective oscillator tube.
3. Defectin oscillator circuit.
1. Replace erase head (158).
Replace oscillator tube.
Check oscillator circuit for faulty
components.
2.
3.
MECHANICAL PARTS LIST
I
2
2A
3
3A
4
5
6
87
09
r05410
105584
Retainer, Tape Reel Retalner
(Rubber)
ShaJt, Right-Iland Reel Eub And Shaft
Ass'y.
Shaft, Left-Eand ReeI Eub And Shaft
Ass'y.
Knob, Tone Control Knob (Brown)
Knob, lfiark/ Stereo-Slngle Control
Knob (Brown)
Knob, Loudness Control Knob (Suntan
Gold
Screw, #6-32 x 3/4t! Fil. Hd.
Escutcheon, Front Control Panel
Escutcheon
I
8
9
10
11
t2
l3
L4
l5A
l5B
r0l?0?
101483
r015r4
r05612
105589
103277
Screw, #6-32 x 3/16" Binding Head
Microphone Housing
Interlock, Fagt Forward or Rewind
Interlock Bar
Spring, Interlock Bar Tension Spring
Mounting Screws (4)
Motorboard, Motorboard Subassembly
Screw, #8-32 x L/ 2" Long
Escutcheon, Record-Play-Erase llead
Escutcheon
Head, Record-Play Head With Male
Connector
Head, Erase Head With Male
Connector
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15D
15E
15L
15R
lSLW
lSRW
16A
168
16L
r6R
L7
20
2L
22
23
24
25
26
27
2tA
28
29
30
3l
32
33
34
35
36
3?
38
39
40
4t
42
45
46
4'.1
48
49
105505
78651
105385
105363
r05364
1014?4
r0r493
10315?
10r507
10r523
1014?5
10148?
r015r7
r03345
L0L744
101486
r05592
105593
r05594
105595
105611
r05609
101956
101480
101481
14974
101454
105383
r0r448
Bracket, Mounting Bracket For
Record-Play llead And Erase llead
Screw, #2-56 x / 8" Round Head
Washer, #2 Internal Tooth Lockwashe
Screw, #6-32 x lrl4" Fillister llead
Screv, #6-32 x 5/16" Fillister Head
Washer, #6 Split Lockwasher
Washer, #6 Flat Washer
Washer, "C" Type Retaining Washer
Spring, Formed Spring For Tape
Ilold-out Lever
Lever, Tape llold-out Lever (Left
IIand)
Lever, Tape Hold-out Lever (Right
Hand)
Shaft, Capstan Shaft, For 60 Cycle
Operation Only
Post, Tape Guide Post,
Retainerr "C" Washer,
Tape Pressure Roller
Adjustable (2)
Retainer For
Washer, Flat Metal, l/ 2" O.D. x
252" I. D. x .010" Thk.
Washer, Cambric, .43?" O. D. x
255" I. D. x .005" Thk.
Roller, Tape Pressure Roller, For
60 Cycle Operation Only
Screw, #6-32 x lrl 4" Fillister Head
Washer, #6 Split Lockwasher
Retainer, Push-Button Assembly Shaft
Retainer, 3/ 8" x 13/ 32" x .04?8" Thk.
Ring, Grip Ring .118" Free Dia. ,
.025" Thk.
Spring, Monitor Button Return
Torsion Spring
Spring, Torsion Play Button. Beturn
Spring
Shaft, Pivot Shaft For Push-Button
Ass'y.
Button, "Play" Button And Cam
Assembly (Antique White)
Button, "Reqrind" Button And Cam
Assembly (Antique White)
Button, "Fast Forward" Button And
Cam Assembly (Antique White)
Button, "Monitor" Button Assembly
(Antique White)
Bar, Stop Bar, Plastic Bar OnlY
Knob, Speed Selection Control Knob
(Suntan Gofd)
Post, Tape Guide Post, Fixed (2)
Screw, #6-32 x 3/ 8" Long
Counter, Tape Counter With Knurled
Knob And Pulley
Screw, #6-32 x /4" Fillister Head
Washer, #6 Split Lockwasher
Bracket, Pilot Lamp Bracket
Collar, Interlock Detent Collar, Die
Cast
Washer, #6 Split Lockwasher
Screw, #6-32 x 3/16" Fillister llead
Screw, SetScrew, #8-32 x 3/16" For
Interlock Detent Collar
Sprrng, Speed Change Detent SPring
Arm, Tape Pressure Roller Arm
Collar, Pressure Roller Arm Retain-
ing Collar, Lese Set Screw
MECHANICAL PARTS LIST (Con't)
101592
i03271
r01592
1014??
105384
103253
10r95?
101450
101500
10r500
59
60
6r
62
63
64
65
66
6?
68
69
?0
?r
12
?3
14
75
?6
TI
?8
101499
101511
l014
10u6?
ior592
Screw, #8-32 x l,/ 4" Cup Point Set
Screw
Pulley, Talre-up Drive Pulley
Screw, #8-32 x l/ 4" lg. Cup Point
Set Screw
Latch, Pueh-Button Release Latch And
Bar Assembly
Pad, Tape Pressure Pad Assembly
With Felt Pad
Spring, Preesure Roller Arm Return
Spring, .218" O.D. xlV16" Free
Length
Support, Pressure Roller Arm Support
Plate
Spring, Pregsure Roller Arm Formed
Spring
Ring, Grip Ring .180" Free Dla. ,
.035" Thk.
Screw, #6-32 x 3/16" Fillister llead
Ring, Grip Ring, .180" Free Dia. ,
.035" Thk.
Waeher
Spring
Washer
Rod, Record Actuating Rod
Arm, R. H. Brake Arm With Pad
Spring, Brake Arm Spring, . 218' O. D.
x 111116" Free Length
Slide, Brake Release Slide
Collar, Brake Arm Retaining Collar,
Less Set Screw
Screw, #8-32 x L/ 4t' Lg. Cup Point
Screw
Slide, Fast Forward Drive Roller
Actuating Slide Ass'y.
Ring, Grip Ring, .180" Free Dia. ,
.035" Thk.
Slide, Pressure Roller Arm Actuating
Slide
Ring, Grip Ring, .180" Free Dia. ,
.035" Thk.
Bracket, Take-up Spring Mounting
Bracket
Screw, #6 xL/ 4" Hex IId. Tapping
Screw
Washer, Phenolic, l/ 2" O.D. x
.188" I. D. x .010" Thk.
Wheel, Fast Forward Drive Roller,
Rubber Tired
Ring, Grip Ring, .180" Free Dia. ,
.035" Thk.
Pulley, Main Drive Dual Pulley Ase'y.
Belt, Take-up Drive Belt, FlatFabric
Ring, Grip Ring, .118" Free Dia. ,
.025" Thk.
Washer, Flat Washer, .240" O. D. x
.130" I. D. x . 005" Thk.
V/asher, Cambric Washer, . 240"
O. D. x .130'r I. D. x .005" Thk.
Roller, Take-up Belt Tension Roller
Washer, Cambric Washer, . 240" O. D.
x .130" I. D. x . 005" Thk.
Arm, Take-up Arm Assembly
Flywheel, Capstan Drive Flywheel
Screw, *8-32 x l/ 4" Lg. Cup Point
Set Screw
50
51
52
53
54
55
56
5?
58
vr7
F3
9<
Ul ar
{J
?o
@-
A3
ro
-H
UIF
L tr
Sa
\l
-9
tn ra
dt^
\o
?9
80
8r
82
83
84
85
86
87
88
r05393
10r500
103341
r0r500
103346
101502
101492
r0r500
103282
103283
10151?
100r96
100198
r032?5
100r98
r032?6
101476A
101592
-t
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Page 13

MECHANICAL PARTS LIST (COn.t)
Ref .
No. Part
No. Description
89
90
91
92
93
94
95
95A
96
97
9?A
98
99
100
101
r02
r03
104
105
r06
l0?
r08
r09
110
111
Ii2
113
lr4
u5
116
11?
118
119
120
,l.Q627
r056u
r01459
r0r515
r0r452
r05387
105366
r05391
105386
10536?
r01497
l0l5u
101?6?
r01592
?r099
r0r500
101456
10r502
?4078
r0146?
101500
101500
10i512
r05338
105389
r01508
r01592
105388
Screw, #6-32 x l,/ 8" Allen IId. Set
Screw
Collar, Retaining Collar For Dual
Pulley Ass'y.
Plate, Motor Mounting Plate And
Capstan Shaft Bearing Plate Ass'y.
Spring, Push-Button Latch Tension
Spring, . 343" O. D. x 7/ 16" Free
Length
Bracket, Push-Button Latch Mounting
Bracket
Screw, #6-32 x 1,/4" Fillister Head
Wh'eel, Speed Change Idler Wheel
(? V 2 ips)
Arm, ? I/ 2 ips Speed Change Arm
Sprlng, Speed Change Arm Return
Spring
Wheel, Speed Change Idler Wheel
(3 3/ a ips)
Arm, 3 3/ 4 ips Speed Change Arm
Arm, L. H. Brake Arm With Pad
Spring, BrakeArm Spring, .218"
O. D. x 11,/ 16" Free Length
Collar, Brake Arm Retaining Collar,
Less Set Screw
Screw, 8-32 x L/ 4t'Lg. Cup Point
Screw
Spring, Rewind Slide Return'spring
.187" O. D. x 3/ 4" Free Length
Ring, Grip Rlng, .180" Free Dia. ,
.035" Thk.
Slide, Rewind Drive Idler Actuating
Slide
Washer, Phenolic, L/ 2" O.D. x
.188:' I. D. x . 010" Thk.
Washer, Cambric Washer, . 328" O. D.
x .195"I.D. x .005" Thk.
Roller, Rewind Drive Roller, Die
Cast Aluminum
Washer
Rlng, Grip Ring, .I80" Free Dia. ,
.035" Thk.
Ring, Grip Ring, .180" Free Dia. ,
.035" Thk.
Stop, Take-up Arm Stop
Washer
Screw, Ta.ke-up Arm Screw
Spring, Take-up ArmSpring, .18?"
O. D. x 7/ 8" Free Length
Screw, Counter Mounting Screws
Cam, Speed Change Cam, Less Set
Screw
Lever, 1 L/ 2 Lps Change Lever
Washer, "C" Ring, , 282 O. D. x . 114"
I. D. x . 025'! Thk.
Screw, #8-32 x 1rl 4" Cup Point Set
Screw
Cam, Speed Change Cam, Less Set
Screw
Ref .
No. Part
No. Description
i21
r22
123
r24
t25
126
127
128
129
130
r3r
r32
133
134
135
l35A
136
137
138
139
141
t42
143
144
145
146
L47
148
r49
150
151
L52
153
105350
101462
10543
10r589
10145?
105392
101523
101591
?8?19
101508
1053?0
?8651
10r496
10151?
r01516
?r099
105358
103948
10159i
r01523
105390
101508
105359
101468
r0r592
1014?3A
r01592
Lever, 3 3/ 4 ips Speed Change Lever
Washer, "C" Ring, . 282" O. D. x .114"
I. D. x .025" Thk.
Shaft, Speed Change and On-Off Swltch
Operating Lever Shaft
Pulley, Rewind Drlve Pulley
Screw, #8-32 x L/ 4" Lg. Cup Point
Set Screw
Pulley, Motor Drive Pulley
Screw, #8-32 x I/ 4" Lg. Cup Point
Set Screw
Washer
Nut, #10-32 Hex Nut
Washer, #10 Split Lockwasher
Washer, Flat Metal Washer, 1,/ 2"
O. D. x . 198" I. D. x l/ 32" Thk.
Washer, #10 Split Washer
Screw, #10-32 x 3/ 8" FiUister nead
Motor, Drive Motor, 115 Volt, 60
Cycle
Fan, Motor Fan, Aluminum With #10-
32 x L/ 4" Set Screw, b" Dlameter For
Motor STR-8
Fan, Motor Fan, Aluminum With
#10-32 x l/ 4" Set Screw, 5" Diameter
For Model STR-8
Screw, #f0-32 xI/ 4" Allen Head CuP
Point Set.Screw For Motor Fan
Belt, Counter Drive Belt (Rubber)
Belt, Main Drive Belt (Rubber)
Washer, Cambric, .43?" O.D. x
255" I.D. x .010" Thk.
Washer, Phenolic, I/ 2" O.D. x
250" I-D. x .010" Thk.
Washer, Flat Metal . 312" O. D. x
.190" I. D. x . 010" Thk.
Washer, "C" Ring (Retainer), . 282"
O. D. x . I14" I. D. x . 025" Thk.
Spring, Return Spring For Preesure
Pad Assembly
Washer, "C" Washer Type Retaining
Washer For Pressure Pad Assembly
Stud, Motor Mounting Stud, 3" Long,
#f0-32 Thd. Both Ende
Ring, Grip Ring, .I18" Free Dia. ,
.025" Thk.
Shaft, Push-Button Latch Pivot ShaJt.
Spring, Fast Forward Slide Return
Spring, . l8?" O. D. x 3/ 4" Free
Length
Spacer, Motor Mounting Spacer
Grommet,. Motor Mounting Grommet,
Rubber (4)
Washer, Flat Metal Washer, / 2"
O. D. x.198" I. D. x l/ 32" Thk.
Waeher, Phenolic, lrl 2" O. D. x
0. 250" I. D. x . 010" Thk.
Washer, Cambric, .43?" O. D. x
.255" I. D. x .005 Thk.
Page 14

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