Teletype 14 Manual

BULLETIN 127B
ADJUSTMENTS AND LUBRICATION
MODEL 14
TYPE BAR TAPE PR INTER
FP, FB, FK
TELETYPE®
BULLET IN 127B
SUBSIDIARY OF We5r~rn Electric Company INC.
CHICAGO, ILLINOIS, u. S. A.
Copyright 1936 and 1946 by Teletype Corporation
Printed-in U.S.A.

127U

127B
MODEL 14 SENDING- RECEIVING TAPE PRINTER
(
LESS COVER )

12713
MODEL 14 RECEIVING-ONLY TAPE PRINTER
(.LESS COVER)

A
127B
LIST OF EFFECT IVE PAGES
AUGUST, 1959
Supersedes
September, 1946 Issue
PAGE
CHANG EIN EFFECT
Title Page
Original
A to E Original
1 to 41 Original
The above Iist indicates the effective pages as of the date of
issue. Upon receipt of change pages, insert them numerically and dis-
card any superseded pages.
ORIGINAL

127B
CONTENTS
Paragraph Page
1. GENERAL ----------------------------------------------------------------------
1.a. Adjustment --~------------------------------------------------------------
1. b. Spring Tensions -------------------------------------------------------------
1. c. Motor Speed Adjustment -----------------------------------------------------
1.d. Receiving Range Adjustment --------------------------------------------------
1. e. Pulling Magnet Selector -----------------------------------------------------
2. ADJUST ME NTS---------------------,;.-------------------------------------- ------- 2
2.a. Typing Unit---------------------------------------------------------------- 2
2.a.(60) Bell and Break Contact Mechanism Adjustment --------------------------- 14
2. a. (60) (a) Double Contact Mechanism ------------------------------------- 14
2. a. (60)(a)2. Bell Hammer Adjustment---------------------------------- 14
2.a.(60)(a)5. Break Signal Contact Spring Adjustment -------------------- 14
2. a. (60)(a)3. Contact Mounting Screws Adjustment----------------------- 14
2. a. (60)(a)4. Contact Springs Adjustment ------------------------------- 14
2.a. (60)(a)1. Detent Arm Spring Tension ------------------------------- 14
2. a. (60)(b) Single Contact Mechanism ------------------------------------- 14
2. a. (60)(b)1. Contact Springs Adjustment for Single Contact Mechanism. ---- 14
2.a. (56) Bell Hammer Eccentric Screw Adjustment-------------------------------- 13
2.a. (22) Carriage Bracket Locating Plate. --------------------------------------- 10
2.a. (32) Carriage Extension Adjustment----------------------------------------- 11
2. a. (23) Carriage Locking Pawl Post Adjustment --------------------------------- 10
2. a. (30) Carriage Locking Pawl Spring Tension ---------------------------------- 11
2.0. (29) Carriage Return Spring Tension ---------------------------------------- 10
2.a. (14) Function Bar Bracket Plates Adjustment -------------~------_r----------- 9
2.a.(8) Holding Magnet Selector Mechanism Adjustments-------------------------- 5
2.a. (8)(a) Armature Pivot Screw Adjustment --------------------------------- 5
2. a. (8)(1) Armature Spring Tension Adjustment ------------------------------- 7
2.a.(8)(f) Locking Lever Spring
Tension------------------------------------- 6
2.a. (8)(e) Locking Wedge Adjustment -------------------------------------- 6
2.a. (8)(d) Selector Arm Bracket Adjustment --------------------------------- 5
2.
a. (8)(m) Selector Arm Operating Screw Adjustment ------------------------- 7
2.a.(8)(c) Selector Arm Pivot Screw Adjustment ----------------------------- 5
2.a. (8)(n) Selector Arm Spring Tension -----------------------------------..;,- 7
2. a. (8)(g) Selector Arm Stop Detent Adjustment------------------------------ 6
2.a.(8)(h) Selector
Arm Stop Detent Spring Tension--------------------------- 6
2.a.(8)(i) Selector Lever Spring Tension ------------------------------------ 6
2. a. (8)(b) Selector Magnet Adjustment ------------------------------------- 5
2. a. (8)(k) Selector Magnet Bracket Adjustment ------------------------------ 6
2. a. (8)(j) Selector Magnet Bracket Position Adjustment ----------------------- 6
2. a. (8)(r) Selector Stop Arm and Stop Lever Engagement Adjustment ------------ 7
2. a. (8)(0) Stop Lever Eccentric Screw Adjustment ---------------------------- 7
2.a.(8)(q) Stop Lever Spring Tension
--------------------------------------- 7
2. a. (8)(p) Trip Latch Spring Compression --.--------------------------------. 7
2.
a. (8)(s) Trip-Off Screw Adjustment--------------------------------------- 8
2. a. (54) Left Function Pull Bar Spring Bracket Adjustment ------------------------- 13
2. a. (41) Left Ribbon Reverse Arm Shaft Adjustment ------------------------------- 10
2. a. (24) Left Tape Guide Adjustment ------------------------------------------ 10
2.a.(18) Main Bail Adjusting Screw Adjustment --------------------------------..;,- 10
2.a.(58) Main Bail Cam Clutch Torque ----------------------------------------- 13
2.a. (16) Main Bai I Guide Post Adjustment -------------------------------------- 9
2. a. (2) Main Shaft Adjustment ----------------------------------------------- 2
2.a. (5) Main Shaft Clutch Spring Tension -------------------------------,.;------- 2
2. a. (3) Main Shaft Clutch Throwout Lever Adjustment ---------------------------- 2
2. a. (4) Main Shaft Clutch Throwout Lever Spring Tension ------------------------- 2
2.a.(61) Mechanical End-Of-Line Indicator Adjustment -------------------------- 14
2.a.(61)(h) Cam Lever Spring Tension -------------------------------------- 15
ORIGINAL B

127B
Paragraph Page
2.a. (61)(c) Contact Bracket Adjustment ---------------------------------- 14
2. a. (61)(g) Feed Pawl Spring Adjustment ---------------------------------- 14
2. a. (61)(b) Lamp Contact Adjustment ---:.--------------------------------- 14
2. a. (61)(0 Release Bai ISpring Tension------------------------------------ 15
2. a. (61)(d) Worm Follower Adjustment ------------------------------------ 14
2.a.(61)(e) Worm Follower Spring Tension --------------------------------- 15
2.a.(61)(a) Worm Shaft End Play ---------------------------------------- 14
2.a.(63) Mechanical Motor Control Mechanism On Upper Case "H" Adjustments---- 15
2
.• a.(63)(h) Contact Lever Adjusting Screw Adjustment ---------------------- 16
2.a. (63)(a) Contact Lever Bracket Adjustment------------------------------ 15
2. a. (63)(d) Contact Lever Spring Tension---------------------------------- 15
2.a.(63)(b) Latch Lever Bracket Extension Adjustment ----------------------- 15
2.a.(63)(c) Latch Lever Extension Adjustment------------------------------ 15
2.a.(63)(e) Latch Lever Spring Tension ----------------------------------- 15
2.a. (63)(i) Main Bail Spring Adjustment----------------------------------- 16
2.a. (63)(g) Motor Control Contacts Adjustments ---------------------------- 16
2.a. (63)(0 Operating Lever Spring Tension -------------------------------- 16
2. a. (62) Mechanism to Prevent Printing and Spacing on Lower Blank Adjustments---- 15
2. a. (62) (b) Space Suppression Lever Adjustment ---------------------------- 15
2. a. (62)(a) Space Suppression Lever Stop Arm Adjustment-------------------- 15
2. a. (6) Motor Position Adjustment-------------------------------------------- 2
2.a.(65) Positive CarriQge Shift Mechanism Adjustment-------------------------- 16
2.a.(65)(d) Carriage Capstan Nuts Adjustment----------------------------- 17
2.a.(65)(c) Carriage Locking Toe Adjustment ------------------------------ 16
2.a. (65)(1) Figures Locking Pawl Spring Tension ---------------------------- 17
2.a. (65) (b) Figures Stop Screw Adjustment--------------------------------- 16
2.a. (65) (a) Locking Pawl Post ------------------------------------------- 16
2.a.(65)(e) Shift Plate ------------------------------------------------- 17
2. a. (65)(0 Shift Plate Eccentric ----------------------------------------- 17
2.a.(65)(h) Shift Plate Eccentric (Units Equipped With '84584 Release Pull Bar)- 17
2.a.(65)(g) Shift Plate (Units Equipped With #84584 Release Pull Bar) --------- 17
2.a.(17) Pull Bar Guide Adjustment ------------------------------------------ 9
2. a. (35) Pull Bar Lock-out Lever Adjustment ---------------------------------- 11
2. a. (15) Pull Bar Springs Tension--------------------------------------------- 9
2.a.(7) Pulling Magnet Selector Mechanism Adjustments------------------------- 2
2. a. (7)(h) Armature Locking Lever Spring Tension -------------------------- 4
2. a. (7)(g) Armature Locking Wedge Adjustment ---------------------------- 4
2.a. (7) (f) Armature Stops Adjustment ------------------------------------- 4
2.a.(7)(m) Armature
Trlp-off Eccentric Screw Adjustment ------------------- 5
2.a.(7)(0) Magnet Bracket Adjustment
------------------------------------ 5
2. a. (7) (n) Magnet Coils Adj ustment -------------------------------------- 5
2.a. (7) (c) Selector Armature Adjustment ----------------------------~----- 3
2. a. (7)(e) Selector Armature Bracket Adjustment --------------------------- 3
2. a. (7)(d) Selector Armature Bracket Link Adjustment ----------------------- 3
2. a. (7) (a) Selector Armature Bracket Link Friction Adjustment---------------- 2
2. a. (7)(b) Selector Lever Spring Tension ---------------------------------- 3
2.a. (7)(i) Stop Lever Eccentric Screw Adjustment--------------------------- 4
2.a.(7)(j) Stop Lever Spring Tension -------------------------------------- 4
2.a. (7)(1) Trip Latch Spring Compression ---------------------------------- 4
2. a. (64) Push Tape Feed Mechanism Adjustment -------------------------------- 16
2. a. (64)(b) Figures Stop Screw Adjustment -------------------------------- 16
2.a. (64)(a) Locking Pawl Post ------------------------------------------- 16
2.a.(64)(c) Tape Feed Roll Spring Tension --------------------------------- 16
2. a. (49) Ribbon Check Pawl Adjustment--------------------------------------- 13
2.a. (SO) Ribbon Check Pawl Spring Pressure ----------------------------------- 13
2.a.(12) Ribbon Feed Lever Spring Tension ------------------------------------ 9
2.a. (51) Ribbon Feed Pawl Adjustment ---------------------------------------- 13
2.a.(52) Ribbon Feed Pawl Spring Pressure AdJustment -------------------------- 13
2. a. (48) Ribbon Feed Shaft Detent Plunger Spring Compression ------------------- 13
2. a. (47) Ribbon Feed Shaft Safety Spring Compression -------------------------- 12
2. a. (36) Ribbon Guide AdJustment ------------------------------------------- 11
CORIGINAL

127B
Paragraph Page
2.a.(42) Ribbon Reverse Arm Shaft Adjustment ---------------------------------- 12
2.a.(43) Ribbon Reverse Arm Shaft Collar Adjustments---------------------------- 12
2.a.(45) Ribbon Reverse Arm Yield Spring Tension Adjustment--------------------- 12
2.a.(44) Ribbon Reverse Pawl Link Adjustments---------------------------------- 12
2. a. (39) Ribbon Spool Bracket Adjustment ----,;,--------------------------------- 12
2. a. (37) Ribbon Spool Cups Adjustment ---------------------------------------- 11
2. a. (46) Ribbon Spool Shaft Slot Adjustment ------------------------------------ 12
2. a. (40) Ribbon Spool Shaft Spring Compression Adjustment ----------------------- 12
2.a.(53) Right and Left Ribbon Reverse Pawls Spring Tension ---------------------- 13
2. a. (38) Right and Left· Ribbon Spool Shaft Gears Adjustments --------------------- 11
2.a.(55) Right Function Pull Bar Spring Bracket Adjustment ----------------------- 13
2. a. (.2$ Right Tape Guide Adjustment ----------------------------------------- 10
2.a.(59) Selector Clutch Torque ---------------------------------------------- 14
2.a. (1) Selector Separator Plate Adjustment ------------------------------------ 2
2. a. (33) Shift Rocker Adjustment---------------------------------------------- 11
2. a. (31) Shift Rocker Lever Post Adjustment ------------------------------------ 11
2.ao(28) Shift Rocker Post Adjustment------------------------------------------ 10
2.a. (57) Signal Bell Adjustment ---------------------------------------------- 13
2. a. (9) Spacer Detent and Spacer Detent Lever Spring Tension -------------------- 8
2.a. (10) Spacer Feed Pawl Spring Tension -------------------------------------- 8
20
a. (20) Spacer Locking Bail FingerAdjustment --------------------------------- 10
2.a.(13) Spacer Locking Bail Spring Tension------------------------------------ 9
2. a. (19) Spacer Locking Pawl Bracket Adjustment ------------------------------- 10
2.a. (21) Spacer Locking Pawl Springs Tension---------- .. ------------------------ 10
2.a. (11) Spacer Operating Lever Spring Tension--------------------------------- 9
2. a. (27) Tape Chute Adjustment---------------------------------------------- 10
2.a.(26) Tape Feed Roll Spring Tension ---------------------------------------- 10
',2.a. (34) Type Bar Removal--------------------------------------------------- 11
2. a. (66) Unshift On Space Pull Bar Blocking Mechanism ------------------------- 18
2. b. Keyboard Base Adjustments -------------------------------------------------- 18
2. b. (6) Bell Hammer Extension Stop Adjustment -------------------~------------- 18
2. b. (7) Bell Hammer Spring Tension ------------------------------------------- 18
2.b. (17) Clutch Spring Compression ------------------------------------------- 19
2. b. (16) Clutch Throwout Lever Adjustment------------------------------------- 19
2. bo (20) Clutch Throwout Lever Eccentric Adjustment ---------------------------- 19
2.b.(22) Clutch Throwout Lever Spring Tension---------------------------------- 19
2. b. (26) Control Relay Adjustments ------------------------------------------- 20
20 b. (4) Gear Guard Adjustment-----------------------~----------------------- 18
2.b. (19) Intermediate Pawl Eccentric Adjustment -------------------------------- 19
20 b. (18) Lock Loop Roller Adjustment------------------------------------------ 19
2.b.(10) Lock Loop Spring Tension -------------------------------------------- 18
2. b. (12) Locking Lever Shaft Adjustment --------------------------------------- 18
2. b. (13) Locking Lever Travel ------~----------------------------------------- 18
2. bo (9) Locking Pawl Spring Tension------------------------------------------- 18
2. b. (27) Mechanical Motor Control Mechanism Adjustment ----------------------- 21
2. b. (27) (e) Armature Stop Adjustment-------------------------------------- 21
2. b. (27)(1) Inner Contact Assembly Adjustment ------------------------------ 21
2. b. (27)(f) Latch Backstop Screw Adjustment ------------------------------- 21
2.b.(27)(i) Latch Spring Tension ------------------------------------------ 21
2. b. (27)(k) Outer Contact Assembly Adjustment ----------------------------- 21
20b. (27) (h) Start Magnet Armature Spring Tension --------------------------- 21
2. b. (27) (c) Start Magnet Bracket Adjustment-------------------------------- 21
2. b. (27) (a) Start Magnet Core Adjustment ---------------------------------- 21
2.b.(27)(g) Stop Magnet Armature Spring Tension---------------------------- 21
2.b. (27) (d) Stop Magnet Bracket Adjustment -------------.;,------------------ 21
2.b. (27)(b) Stop Magnet Core Adjustment ---------------------------------- 21
2. b. (25) Repeat On "S" Mechanism Adjustment --------------------------------- 20
2.
b. (25) (a) Repeat Space Rod Spring Tension ------------------------------- 20
2. b. (25) (b) Repeat Yoke Lug Adjustment ----------------------------------- 20
ORIGINAL D

127B
Paragraph Page
2.b.(24) Repeat On Space' Mechanism Adjustments ------------------------------ 20
2.b. (24)(d) Jack Spring Tension ------------------------------------------ 20
2. b. (24)(f) Key Lever Spring Adjustment ----------------------------------- 20
2. b. (24)(a) Repeat Space Rod Adjustment ---------------------------------- 20
2. b.(24)(b) Repeat Space Rod Bracket Adjustment --------------------------- 20
2. b. (24)(c) Tape Guide Tube Adjustment----------------------------------- 20
2.b.(24)(e) Typing Unit Slip Connections Spring Tension Adjustment ----------- 20
2.b.(2) Tape Lever Adjusting Clamp Adjustment--------------------------------- 18
2.b.(8) Tape Lever Spring Tension -------------------------------------------- 18
2. c. (5) Tape-Out Bell Adjustment -------------------------------------------- 18
2. b. (11) Transmitting Cam Cyl inder Adjustment --------------------------------- 18
2.b. (14) Transmitting Contacts Gap Adjustment --------------------------------- 18
2. b. (15) Transmitting Contacts Spring Pressure----------------------------------- 19
2. b. (21) Trip-Off Pawl Eccentric Adjustment ----------------------------------- 19
2. b. (23) Trip-Off Pawl Spring Tension----------------------------------------- 19
2. b. (3) Trip-Off Pawl Stop Plate Adjustment ----------------------------------- 18
2.b.(1) Universal Bar Pilot Screws Adjustment ---------------------------------- 18
2. c. Governor Adjustments ------------------------------------------------------ 22
2. c. (10) Governor Adjusting Bracket Adjustment -------------------------------- 23
2. c. (6) Governor Brush Position ---------------------------------------------- 22
2. c. (8) Governor Brush Spring Plate Bracket Adjustment-------------------------- 23
2. c. (9) Governor Brush Spring Pressure ---------------------------------------- 23
2.c. (9)(a) Inner Disc Brush Spring----------------------------------------- 23
2. c. (9)(b) Outer Disc Brush Spring ---------------------------------------- 23
2. c. (3) Governor Brush Spring Requirement------------------------------------- 22
2. c. (4) Governor Shims Adjustment ------------------------------------------- 22
2. c. (7) Inner and Outer Disc Contact Spring Adjustment ------------------------- 22
2.c.(5) Speed Adjustment Lever Stop Plate Adjustment--------------------------- 22
2.c. (2) Speed Adjusting Wheel Friction Washer Spring Tension Adjustment ---------- 22
2. d. Synchronous Motors -------------------------------------------------------- 23
2.d. (1) Starting Switch Adjustments ------------------------------------------- 23
3. LUBR ICAT 10N ------------------------------------------------------------------ 24
3.a. Typing Unlt--------------------------------------------------------------- 24
3.a. (46) Bell and Break Contact Mechanism ------------------------------------ 25
3.a. (47) Mechanical End-Of-Line Indicator Mechanism-------------------------- 25
3.a. (49) Motor Control On Upper Case II H" Mechanism -------------------------- 25
3.a. (50) Push Tape Feed----------------------------------------------------- 25
3.a.(48) Suppression Of Printing and Spacing On Lower Case Of BLANK Mechanism - 25
3.b. Keyboard----------------------------------------------------------------- 25
3. b. (21) Motor Control On Upper Case II H II ------------------------------------ 26
EORIGINAL

127B
ADJUSTMENTS AND LUBRICATION
1. GENERAL
1. a. ADJUST ME NTS -This bulletin covers require-
ments and adjusting procedures for the maintenance
of Model 14 Printers. Adjustments are arranged in a
sequence
that would be followed if acomplete read-
justmentof aunit were undertaken. In following such
aprocedure, parts or assemblies which are removed
to
facilitate adjustment should not be replaced until
all
other adjustments are made which would befacili-
tated by the removal of these parts. If one adjustment
is changed, related adjustments should be checked.
l.b. SPRING TENSIONS -The spring tension
values
indicated in this bulletin are scale readings
which should be
obtained when Teletype scales are
used as
specified. Springs which do not meet the re-
quirements specified and for which no adjusting pro-
cedure is given should be replaced by new springs.
Ordering information may be
obtained from the T ele-
type parts bulletin.
Before proceeding with any adjustmentor ten-
sion, read the applicable portion of the text carefully.
After the adjustment is completed, be sure to tighten
any screws or nuts which may have been loosened.
If apart that is mounted on shims is to be dismantled,
the number of shims used at each of its mounting screws
should benoted
so that the same shim pile-ups can be
replaced when the part is remounted.
NOTE: There is apossibility
of setting the
speed incorrectly, due to getting a
speedmultiple;
i.e., thespeedcould
be half the desired speed, or some
multiple
thereof, even though the
spots appear stationary when viewed
through
the shutters on the tuning
fork. This should
be kept in mind if
trouble is experienced in the oper-
ation of the unit.
When increasingordecreasing the motorspeed,
the speed adjusting lever or
the governor adjusting
bracket, respectively, should be momentarily de-
pressed. (See Figure 85 for location of parts).
1.d. RECEIVING RANGE ADJUSTMENT -Mounted
on
the selector above the end of the main shaft is a
range finder assembly which is used for
the purpose of
orientating the selector to incoming signals.
Before proceeding to measure the
receiving
range on aunit equipped with apulling magnet se-
lector, turn the selector armature spring adjusting
screw
to aposition where it wi II require 6to 6-3/8
ozs. * to stretch the armature spring to its position
length. Then transmit RY (the letters Rand Ysent
alternately) to the printer continually while the re-
ceiving range is being determined. This procedure is
described in the following paragraphs.
1.e. PULLING MAG NET SELECTOR
NOTE: If facilities for transmitting biased
test signals to
the receiving unit are
available, the index arm should be
set
at the optimum setting for the I:e-
ception of biased signals.
While
RY is being received, loosen the index
arm thumb screw and shift the index arm of the range
finder toward 0untiIerrors appear in
the copy. Then
move
the arm backslowly untiIerrors no longer appear;
at least 72 characters should be received without
error. This position indicates one limit of the orien-
tation range. Note the position of the index arm on
the
scale. Determine the opposite end of the receiv-
ing range by repeating the foregoing procedure with
the index arm neartheopposite end of the scale. After
the two limits of the receiving range have been found,
set the index
arm of the range scale midway between
these two points.
Care should be exercised in removing or in-
stalling the cover to avoid damaging parts in close
proximity.
As aprecaution, raise or lower the cover
slowly.with avertical movement.
Lc. MOTOR SPEED ADJUSTMENT -110 volt 50
or 60
cycle synchronous motors may be used on 110
volt 50 or 60 cycle alternating current power supply
unless
the frequency varies more than plus or minus
.75%; in which case series wound governed motors
shouId be used. When governed motors are used, a
speed indicating fork
is required for the purpose of
checking the motor speed. The fork is equipped with
shutters
attached to the end ofthe tines. The governor
is equipped with a target having alternate black and
white spots (Figure 85).
To check the speed, the target should be well
illuminated. Tap the fork gently to make it vibrate.
Hold thefork so that the shutters are close to the eye
and view the
target through the openings in the
shutters.
If the motor is running at the correct speed,
the target wi II appear stationary. If the motor speed
is too fast, the target will appear to be moving in the
direction of rotation; if too slow, in the opposite
di-
rection.
ORIGINAL
*
If unit is equipped with aholding
magnet
selector See Page 7

l.e.(l) When adistortion test set is available for
measuring
the receiving margins of a unit, the arma-
ture spring tension may be varied from 6 to 7 ounces
in order to obtain the specified receiving margins.
This tension should be
checked with the armature in the
marking position and the spring stretched to position
length.
1.e.(2) When no distortion test set is available,
but the unit is equipped with a line relay, the se-
lector armature spring adjusting screw should be po-
sitioned so that it wi II require from 6 to 6-3/8 ounces
to stretch the spring to position length when the arma-
ture is in its marking position.
To check, unhook the spring from the
adjusting screw, hook an 8 oz. scale in the spring eye,
and pull in line with the screw.
l.e.(3) When no distortion test set is available
and the unit is not equipped with a line relay, turn
the armature spring adjusting screw in a clockwise di-
rection until errors appear in the copy. Then, from
this
point, count the number of turns the adjusting
screw
can be turned in a counterclockwise direction
before errors again appear in the copy. Turn the ad-
justing screw back (clockwise) half this number of
turnsto a point midway between the two failing points
(the middle of the armature spring margins) and lock
the adjusting screw with its lock nut.
NOTE: To secure reliable clutch trip, the
tension should be checked to ascer-
tain that it is not below 4-1/2 ozs.
If no errors appear in the copy throughout
the entire physical range of the spring so that the above
procedure cannot be followed, set the spring tension
at 6 to 6-3/8 ozs. and lock the adjusting screw. The
orientation range should be rechecked after the arma-
ture spring range has been determined.
2. ADJUST ME NTS
2.a. TYPING UNIT
2.a.(1) SELECTOR SEPARATOR PLATE ADJUST-
MENT (Figure
1)
NOTE: The separator plate leaf springs are
adjusted during the initial assembly
of the unit and should require at-
tention only if the selector has been
damaged or dismantled. If it is found
necessary
to check the adjustment,
extreme care should be exercised in
the removal and replacement of the
selector lever springs to guard against
distorting them. The subsequent se-
lector adjustments will be faci I itated
if the swords and selector levers are
replaced in the identical location
they formerly occupied.
2
127B
The leaf springs should exert a light
pressure against the swords. To adjust, bend the leaf
springs at the narrow portions so that the ends of the
springs are .050" to .060" below the under surface of
the straight portions.
2.a.(2) MAIN SHAFT ADJUSTMENT -When the
main shaft is rotated, the selector cams on the selector
cam sleeve should line up with their respective se-
lector levers. To adjust, loosen the four screws that
hold the r.lain shaft bearing brackets (Figure 2), and
set the position of the main shaft.
2.a. (3) MAl N SHAFT CLUTCH THROWOUT
LEVER ADJUST ME NT (Figure 2A,) -With the motor
operating, open and close the signal line and then
stop the motor. There should be from .010" to .020"
clearance between the teeth of the two clutch mem-
bers. Adjust the clutch throwout lever by means of
its pilot screws to obtain this clearance. After ad-
justing, the lever should be free with not more than
.002" end play.
2.a. (4) MAl N SHAFT CLUTCH THROWOUT
LEVER SPRING TENSION (Figure 2A, -With the
clutch throwouHever on the low surface of the driven
clutch member, hook an 8 oz. scale over the clutch
throwout lever at the spring hole, and pull hori-
zontally at right angles to the clutch throwout lever.
It should require 2-1/2 to 4 ozs. to start the lever
moving.
2.a.(5) MAIN SHAFT CLUTCH SPRING TENSION
(Figure 2B) -With the teeth of the driven clutch mem-
ber resting
against the teeth of the driving member,
but not
engaged, hook a 32 oz. scale over the throw
out cam on the driven clutch member and pull as
nearly in line with the shaft as possible. It should
require 24 to 30 ounces for 60 WP M and 32 to 42
ounces for 75 WPM speed to separate the clutch teeth.
2.a.(6) MOTOR POSITION ADJUST ME NT -There
should be aminimum backlash without binding between
the motorpinion and the main shaft gear. Check this
backlash
forone complete revolution of the main shaft.
The position of the motor may be adjusted by means
of the motor mounting screws.
2.a. (7) PULLI NG MAG NET SELECTOR MECHA-
NISM ADJUSTMENTS -The
pulling magnet selector
illustrated in Figure 6should meet the following re-
quirements: REMOVE THE RANGE FI NDER (See Page
5for HOLDING MAGNET
SELECTOR MECHANISM
ADJUST
ME NTS)
2.a.(7)(a) SELECTOR ARMATURE BRACKET
LINK FRICTION ADJUSTMENT (Figure 3) -Remove
the selector bracket link screw. With an 8 oz. scale
hooked in the link screwhole and pulled at right angle
to the link, it should require some tension, not over
8 ozs., to start the Iink moving • If necessary, remove
the link and adjust the slotted end to obtain this
friction. Replace the link and screw.
ORIGINAL

127B
2.a.(7)(b) SELECTOR LEVER SPRING TENSION
(Figure
3) -With the code bars in the MARKI NG po-
sition and with the main bail in its highest position,
move the swords manualIy to the
SPAC I NG position0
Hook a
32 oz. scale over the end of each selector
lever at the selector cam sleeve and pull radially to
the main
shaft. It shall require from 6to 10 ozs. to
start
each selector lever moving.
NOTE:
When mC;lking this check, be sure that
the selector levers are free and with-
out bind.
2.ao (7)(c) SELECTOR ARMATURE ADJUST ME NT
(Figure 4) -The armature should be free on its pivot
screws, with
barely perceptible end play. There should
be some
clearance, not more than .008", between the
lower surface of the armature locking wedge and the
Noo 1sword under the fol'lowing conditions:
2.a. (7)(c) 1. No. 1 selector lever resting on
the
peak of its cam.
20 a. (7)(c)2. No.1 sword held againstthe upper
separator
plate without bending the latter.
2. a. (7)(c)30Armature end play taken up in a
direction to reduce the specified clearance to a mini-
mum.
To adjust, proceed as follows:
If there is no clearance between
the armature locking wedge and the No. 1sword,
loosen
the lock nut on the upper pivot screw and ad-
just to obtain clearance, noting that a quarter-turn of ,
the screw is equivalent to approximately 0006". Re-
move the armature
bracket and adjust lower pivot
screwto obtaiilthe proper armature end play. Replace
the armature bracket 0
If there is more than .008" clear-
ance, remove the armature bracket and adjust the
lower pivot screw. Replace the bracket and adjust
the armature end play by means of the upper pivot
screw.
2.a.(7)(d) SELECTOR ARMATURE BRACKET
LINK ADJUSTMENT (Figures 5and 6) -See Note (A)
The position of the armature bracket should be such
that a line through the center of the No.1 sword
extends approximately through
the centers of the
armature pivot screws when the swords are held mid-
way between the stop posts by means of the No. 72581
gauge pins. To adjust, proceed as follows:
2.a.(7)(d)1. Unhook the locking leverspring,
loosen the magnet bracket mounting screws, and move
the bracket to itsrearmost position. Loosen the arma-
ture bracket mounting screws, the linkscrew, and back
off the armature stops. Move the bracket eccentri c out
of the way, so that it wi II not interfere with the ad-
justment. Rotate the mainshaft untiIthe No. 1 se-
ORIGINAL
lector lever rests on the peak of its cam.
20a.(7)(d)20 Hold the swords in aposition mid-
way between the-two stop posts by means of the No.
72581 gauge pins inserted between the stop posts and
the swords. Be sure that both the armature extension
arms are between the arms of the swordso With
the
swords held in this position, place the Noo 73370
locating gauge over the ends of the Noo 1sword, so
that the two legs of the gauge are against the ends of
the sword armso Move the bracket to aposition where
both
the armature extension arms are against the flat
surface between the Iegs of the gauge0
20ao(7)(d)30 Hold
the bracket in this position
and
tighten the link screw onlyo Remove the locating
gauge and the two gauge pins.
2.a. (7)(e) SELECTOR ARMATURE BRACKET AD-
JUSTMENT (Figure 6) -See Note (A) -The position
of the armature bracket should be such as to provide
some
cI earance, not more than .040", between each
sword and either stop post under the following con-
ditions:
Rotate
the mainshaft unti I the No. 1
selector lever is resting on the peak of' its cam. With
the armature in its unoperated SPACI NG position,
move
the spacing arm of the Noo 1sword against the
armature extension. Place a0040" wire gauge against
the spacing stop post and move the armature slowly'
toward the MARKING position. The blade of the
sword should strike the .040" gauge before the arma-
ture leaves the spacing arm of the sword. Under these
conditions,
the armature will move the sword to with-
in not more than 0040" of the stop post. Remove the
.040" gauge and repeat the foregoing procedure. The
armature should
leave the spacing arm of the sword
before
the blade of the sword strikes the spacing stop
post0Under these conditions,
there should be some
clearance between the sword and the stop post.
Unhook
the armature spring at its
adjusting screw
and, with the selector armature in its
operated MARKI NG position, move the marking arm
of the No0 1 sword against the, selector armature ex-
tensiono Then rotate the armature slowly toward the
SPACING position until the armature just leaves the
marking arm of the Noo 1sword. Check the clearance
between the No. 1sword and the marking stop post
in
the same manneras described in the foregoing para-
graph. With each selector lever on the peak of its
cam,
each associated sword should be tried for the
foregoing requirement of some clearance, not more
than
.040", between each sword and the stop posts.
To adjust, tighten the armature
bracket mounting screws just enough so that the
bracket may be moved by tapping it lightly. By
rotating the bracket on its pivot, the clearance be-
NOTE (A) These requirementsshould be checked with
the range finder assembly removed.
3

*
tween the swords and the stop posts may be regulated.
If this clearance is more than .040
11
move the bracket
in a direction to bring the armature toward the sword.
If th~re is no clearance, move the bracket in the oppo-
site direction to bring the armature away from the
sword.
If the clearance between the sword
and
one stop post is close to zero and the clearance
between the sword and the other stop post is more than
•
040", it will be necessary to refine the SELECTOR
ARMATURE BRACKET LINK as follows:
Loosen
the armature bracket mounting
screws and
the armature bracket link screw and move
the armature bracket to the right or left so that the
rear end of the link will move in adirection corres-
ponding to the post at which a greater clearance is
desired; i. e., if the clearance between the sword and
the right stop post is less than that between the sword
and
the left stop post, move the bracket to the right.
Tighten the bracket link screw and proceed to adjust
the armature bracket according to the preceding para-
graphs.
After the
bracket is set and both
screws
are 'tightened, move the bracket eccentric
against the bracket and tighten its screw. The eccen-
tric and link will, therefore, determine the position
of the bracket. The bracket may be removed by simply
removing
the two bracket screws. In replacing, the
bracket should be held against the eccentric stop,
while
the two bracket screws are tightened.
2.a. (7)(f) ARMATURE STOPS ADJUST ME NT
(Figures 6and 7) -See Note (A) -The No. 1sword
arms (right and left) should
cleartheassociated arm of
the selector armature extension by .035
11
to .037
11
*
when the front edge ofthe opposite sword arm is against
its armature extension arm and
the No. 1 selector
lever is on the high part of its cam. To adjust the
clearance of the right arm, remove the locking lever
spring and reposition the unoperated stop screw with
the armature in its unoperated position. To adjust the
clearance of the left arm, reposition the operated stop
nut with
the armature in the operated position, and
with:
the coils energized. If either clearance is
changed, recheck the clearance of the other arm. If
necessary, pinch the nut to make it tight on its screw.
Replace
the locking I~ver spring.
The upper limit may be increased
up
to .042
11
only if necessary in orderto
permit meeting
the requirements for
clearance given under the heading
ARMATURE TR IP-OFF ECCE NTRIC
SCREW ADJUST ME NT.
2.a.(7)(g) ARMATURE LOCKING WEDGE AD-
JUSTIVIENT (Figure 8) -There should be .006
11
to
.012
11
clearance between the point of the armature
locking wedge and
the point of the locking lever when
the locking lever
is on the long high part of the lock-
4
127B
ing cam and the two points are in line. To adjust,
move
the locking wedge forward or backward in its
slot in
the armature extension by means of the locking
wedge lock
nut.
2.a. (7)(h) ARMATURE LOCKI NG LEVER SPRI NG
TE NSION (FiglJre 8) -With the locking lever on the
high part of the locking cam, hook a 32 oz. scale in
the spring hole of the locking lever and pull in line
with
the spring. It should require 10 to 14 ozs. to
start
the lever moving•
2. a. (7)(i) STOP LEVER ECCE NTR IC SCREW AD-
JUST ME NT (Figure 9) - See Note (A) -The stop lever
on
the range finder assembly should overtravel the
latching surface of the trip latch by some, not more
than
.006" clearance. To adjust, position the stop
lever
eccentric screw bymeans of its lock nut, making
certain that the tightening of the eccentric screw lock
nut does not disturb
the adjustment.
2.a.(7)(j) STOP LEVER SPRING TENSION
(Fi gure 10) -See Note (A)
NOTE: Be sure that the stop lever eccentric
has been adjusted before taking this
reading.
With the trip latch plunger held
operated, hook an 8 oz. scale at the end of the stop
lever on
the range finder assembly. It should require
3/4 to 1-1/4 ozs. to start the lever moving.
2.a.(7)(k) SELECTOR STOP ARM AND STOP
LEVER ENGAGEMENT ADJUSTMENT (Figure 11)
(For units equipped with adjustable range
scale as-
sembly) -With the selector magnet armature in the
spacing position,
rotate the selector cam sleeve until
the stop
arm moves the stop lever to its maximum
trave Ibeyond the step of the trip latch. Loosen the
range scale assembly mounting screws and the po-
sitioning link mounting screw just enough to make
them friction
tight. Position the range scale assembly
so that the over travel of the stop lever beyond the
trip latch is at least half but not more than the width
of
the stop lever. This should be checked with the
range
indicator set at 0, 60 and 120 on the range
scale. Tighten the mounting screws and the position-
ing link screw.
2.a. (7)(1) TRIP LATCH SPRI NG COMPRESSION
(Figure
9) -See Note (A) -When measuring this re-
quirement, the range finder assemblyshould be held in
ahorizontal position. When an
8oz, scale, held
in a
vertical position, is applied to the trip latch as
near to the stop lever as possible and pushed upward,
it
shouldrequire 1to 1-1/2 ozs. to start the trip latch
moving.
REPLACE THE RANGE FINDER ASSEMBLY
NOTE (A) These requirements should be checked with
range finder assembly removed.
ORIGINAL

TAKING CARE TO AVOID JAMMING THE
TRIP LATCH PLUNGER AGAI NST THE ARMA,-
TURE TRIP-OFF ECCENTRIC SCREW WHEN
REMOUNTI
NG.
2.ao(7)(m) ARMATURE TRIP-OFF ECCENTRIC
SCREW ADJUST ME NT (Figure 11) -There should be
some
clearance, not more than .004" between the
stop lever and the trip latch when the armature kin
the unoperated position and the selector cam sleeve
is rotated until the stopping edge of the stop lever
is directly below the latching surface of the trip latch.
While checking the above clearance, take up the play
in the stop lever with ascrewdriver applied axially
adjacent to the spring hole as close to the bearing as
possible with thrust in
the direction of the trip latch 0
This
clearance should be held to aminimum to favor
the "at least 0002" end play" of the trip plunger.
The trip latch plunger should have at
least .002" end play when the armature is held in the
attracted position and when the stop lever is resting
against its eccentric stop posto (See Figure 9)
To adjust, loosen the trip-off eccentric
screw lock nut and position the eccentric to meetthe
first requirement. The latter requirement serves as a
check on the trip-off eccentric adjustment and also
on
the adjustment of the armature stops.
2.a.(7)(n) MAG NET COILS ADJUSTMENT -The
top edge of the core of the upper magnet coil should
align (within 1/64") with the top edge of the armature.
Adjust by means of the magnet coil mounting screws.
2.a.(7)(0) MAGNET BRACKETADJUSTMENT-
There should
be 0002" to .007"* clearance between
each magnet core and the armature antifreeze strip
when
the magnet coiIs are energi zed and the armature
is
against the operated stop nut (marking stop). The
faces of the cores should be parallel to the face of the
armature. To adjust, position the bracket by means
of its enlarged mounting holes. See Figure 6for lo-
cation of partso
*This
clearance should be .003" to
.010" when achromium plated arma-
ture is u5ed 0
2.a.(8) HOLDING MAGNET SELECTOR MECHA-
N[SM ADJUSTMENTS -The holding
magnet selector
illustrated in Figure 12 should meet the following re-
quirements: REMOVE THE RANGE FI NDER ASSEMBLY
(See Page 2for Pulling Magnet Selector Mechanism
Adjustments)•
2.a.(8)(a) ARMATURE PIVOT SCREW ADJUST-
ME NT (Figure 12) -With the armature spring and the
selector arm spring unhooked, the armature should be
free on its pivots with
barely perceptible end play.
NOTE (A) These requirementsshould be checked with
the range finder assembly removed.
ORIGINAL
1278
To adjust, loosen the armature upper pivot screw lock
nut and position
the armature by means of its upper
pivot screw. Tighten the lock nut, and replace the
selector magnet bracket.
Rehook the annature spring and the
selector arm spring.
2.a.(8)(b) SELECTOR MAGNET ADJUSTMENT
(Figure 13) -When
the armature is in its operated po-
sition, it should touch both magnet cores at approxi-
mately the centers of their pole-faces, and the cores
should be
centrally located with respect to the arma-
ture as gauged by eye when holding alight background
behind the magnet and armature assembly. To adjust,
remove the selector magnet bracket and reposition the
magnet core assembly by means of its mounting screws
while holding the assembly so that the cores are verti-
cal and the armature, by its own weight, rests against
the pole-faces. Replace the selector magnet bracket.
NOTE: When the cores are in proper adjust-
ment, it should require at least 3-1/2
Ibs. pull, with a 64 oz. scale hooked
to the armature edge in line with the
armature extension, to separate the
armature from the cores when a current
of .020 amperes is flowing through
the magnet coi Is (coi Is in series
shunted by 5000 ohm
resistance).
2.a.(8)(c) SELECTOR ARM PIVOT SCREW AD-
JUSTMENT (Figures 14and 15) - See Note (A) -With
the armature spring, the selector arm spring, and se-
lector arm stop detent spring unhooked, the selector
arm should be free on its pivotswith barely perceptible
end play, and the locking lever should over-travel the
top and bottom edges of the locking wedge. There
should also be
.008" minimum clearance between the
selector arm and the armature extension, and a mini-
mum clearance of .010" between the selector arm and
the selector arm stop detent when the play in the de-
tent is taken up in a direction to make this clearance
aminimum. The end play should be adjusted by means
of the upper pivot screw. If the minimum clearance
requirements are not met, it wi II be necessary to re-
move the selector magnet bracket, the selector arm
bracket, and adjust both pivot screws of the selector
arm.
2. a. (8)(d) SE LECTOR ARM BRACKET ADJUST-
ME NT (Figure 12) -See Note (A) -The position of the
selector arill bracket should be such as to provide some
clearance, not more than .040", between each sword
and eitber stop post, under tbe following conditiol'l~:
Remove the locking lever spring, the
armature spring, selector arm stop detent spring, and
the selector arm spring. Rotate the main shaft until
the No. 1 selector lever is resting on the peakof its
cam. With the selector arm in its unoperated (SPAC-
I
NG) position, move the spacing arm of the No. 1
sword
against the selector extension. Then rotate the
5

selector arm slowly toward the MARK ING position
until
the selector arm just leaves the spacing arm of
the No. 1sword. There should be some clearance,
not more than .040", between the No. 1sword and the
spac i,ng stop post.
With the selector arm in its operated
(MARK ING) position, move the marking arm of the
No. 1sword against the selector arm extension. Then
rotate the selector arm slowly toward the SPAC ING
position until the selector arm just leaves the marking
arm of
the No. 1sword. There should be some clear-
ance, not more than .040", between the No. 1sword
and the marking stop post.
With each selector lever on the peak
of its cam, each associated sword should be tried for
the foregoing requirementof some clearance, not more
than. 040" 0 To adjust, loosen the se lector arm bracket
mounting screws just enough to make the bracket
friction tight. Then, to equalize the clearance be-
tween the swords and the stop posts, loosen the cen-
trali ~ing eccentri cscrew locknut and turn the eccen-
tric screwclockwise to providemore clearance on the
SPACING side or counterclockwise to provide more
clearance on the MARKI NG side.
NOTE: Be sure that the selector arm stop
detent does not interfere with the ad-
justmento
The centralizing eccentric screw
shJ~ld always be located so that its indicating line is
adjacent to the marked scale that has been providedon
the bracket to aid in gauging the amount the screw
must be turnedo Tighten the lock nut when the se-
lector arm has been centralized. To obtain the II some
clearance, not more than .040", II requirement be-
tween the swords and the stop posts, insert the Noo
90783 adjusting wrench in one of the two holes pro-
videdand turn the wrench to move the bracket closer
to orfartherfrom the swords as required. Then tighten
the selector arm bracket mounting screwso Replace
the locking lever spring, selector arm spring, and
armature spring.
2.a.(8)(e) LOCKING WEDGE ADJUSTMENT
(Figure
16) -With the locking leveron ahigh partof
its cam, the endof the lockingwedae shouldclearthe
lockin9 I ever by .005" to .012
11
when the end of the
wedge is held in line with the locking lever. To ad-
just, loosen the locking wedge mounting screw and
position
the locking wedge in its guide: then ti!Jhten
the mounting screwo
2.a.(8)(f) LOCKING LEVER SPRING TENSION
(Figure 16) -With the locking lever on the high part
of its cam, hook an 8oz. scale on the end ofthe lock-
ing lever, at the spring hole, and pull in line with
the spring. It should require 4 to 5-1/2 ozs. to start
the lever moving away from the cam0
2.a.(8)(g) SELECTOR ARM STOP DETENT AD-
JUSTME NT (Figure 14) -With the locking leveron the
6
]27B
low part of its cam, there should be an equal amount
of clearance, within 0003
11
,between the sides of the
locking wedge and the locking lever when the selector
arm is in the MARKING or SPACING positiono
NOTE: When checking the MARKI NG po-
sition, be sure that the selector arm
operating screw does not interfere
with the movement of the selector
arm 0
To adjust, loosen the screw that
mounts the seI ector arm stop detent eccentric post iust
enough to make the post friction tight. Position the
stop detent by turning the post; then tighten the post
mounting screw.
20ao(8)(h) SELECTOR ARM STOP DETENT
SPRING TENSION (Figure 14) -Unhook the stop
spring from the locking lever guide and hook an 8 oZo
scale in the spring eye 0It should require 4 to 50zso
to pull the spring to its position length.
20ao(8)(i) SELECTOR LEVER SPRING TENSION
(Figure 16) -With the code bars in the MARKI NG
position and with the main bai Iin its highest position,
move the swords manually to the SPACI NG positiono
Hook a 320zo scale over the end of each selector
lever at the selector cam sleeve and pull radially to
the main shafto It shall require from 6 to 10 oZSo to
start
each selector lever moving.
NOTE: When making this
check, be sure that
the selector levers are free and with-
out bindo
20ao(8)(j)
SELECTOR MAGNET BRACKET PO-
SITION ADJUSTMENT (Figure 17) -With the main
shaft in the stop position, rotate the selector cam
sleeve until the locking lever just drops off the high
part of its cam; then rotate the cam sleeve backward
until the rotation is stopped by the locking I ever 0
Under this
condition there should be a clearance of
0060
11
to .065" between the armature extension and
the face of atooth on the armature cam0 To adjust,
loosen the selector magnet bracket mounting screws
and
the selector magnet bracket adjusting arm mount-
ing screws just enough to make the bracket and ad-
justing arm friction tighta Then position the selector
magnet bracket by means of the adjusting arm, using
the Noo 90783 adjusting wrench. To do this, insert
the adjusting wrench in the hole above the end of the
adjusting arm and rotate the wrench. Tighten the
bracket and adjusting arm mounting screws.
NOTE: When
checking the above require-
ment,the armature extension should
be held approximately. 045" from the
bottom of the notch of its cam.
2oa.(8)(k) SELECTOR MAGNET BRACKET AD-
JUSTMENT (Figure 13)
ORIGINAL

NOTE: When making this adjustment these-
I ector arm shouId be, kept in the
MARKING position.
With the selector magnet energized,
the clearance between the selector armoperating screw
and the selector armshould,be .004
11
to 0006
11
greater
when the armature lever is on a peak of its cam than
when the armature is opposite an indent on the cam.
2.a.(8)(k)1. To adjust,de-energize the se-
lector magnet and rotate the selector cam sleeve unti I
the armature extension is resting on the peak of the
armature cam. Holding the cam sleeve in this position,
turn the main shaft to a point where it moves the arma-
ture the greatest distance 0
2.ao(8)(k)2. With the selector magnet still de-
energized, loosen the selector magnet bracket mount-·
ing screws
and, by meansof its adjusting screw, rotate
the selector magnet bracket so that the armature just
touches the pole-faces; then turn the adjusting screw
an additional one-tenth of aturn counterclockwiseo
This
wi II press the armature firmly against the magnet
cores. (While making the one-tenth of aturn adjust-
ment, be careful to avoid lost motion bytakingupthe
slack in the adjusting screwo)
2.a.(8)(k)3. With the selector magnet ener-
gized, measure the clearance between the selector arm
operating screw and the selector arm and if there is no
clearance, back off the selector arm operating screw
to provide at least. 006
11
clearance. Then rotate the
selector cam sleeve so that the armature extension is
opposite an indent of its cam and again measure the
clearance between the selector arm operating screw
and the selector arm. If the difference in the two
clearances exceeds.. 006
11
, the selector magnet bracket
adjusting screw should be turned clockwise. If the
difference in the clearance is less than .004
11
,turn
the screw counterclockwise •Tighten the selector
magnet bracket mounting screws.
2.a .. (8)(1) ARMATURE SPRING TENSION AD-
JUST ME NT (Figure 13-A) -Unhook the armature spring
from its spring arm
and rotate the main shaft untiJ the
armature extension is on ahigh part of its cam.
With a 32 oz. scale hooked in its spring eye, pull the
spring to its position length0The following tension
should apply:
2. a. (8)(1) 1. If adistortion test set is avai lable,
the spring tension should be set at the optimum value
within the limits of 13 to 240zso
2.a.(8)(1)20 If no distortion test set is avail-
able, the spring tension should be 17 to 19 ozs., ex-
cept when coils are connected in parallel without a
1000 ohm
shunt. Under this latter condition the ten-
sion should be 13to 15 ozs. To adjust, loosen the
spring arm mounting nut and position the spring arm.
Then tighten the mounting nut'. Rehook the armature
spring.
ORIGINAL
127B
20ao(8)(m)
SELECTOR ARMOPERATING SCREW
ADJUSTMENT (Figure 18) -With the selector magnet
energized and the selector cam sleeve rotated so that
the armature extension is opposite an indent of its
cam, there should be a clearance of .003
11
to .006
11
between the selector arm operating screw and the se-
lector arm. To adjust, loosen the selector arm operat-
ing screw lock nut and position the screw; then tighten
the lock nut0
2.a.(8)(n) SELECTOR ARM SPRING TENSION
(Fi gure 19) -Unhook the se lector arm stop detent
springo With the armature extension on ahigh partof
its cam, and the locking lever held' away from the
locking wedge, hook an 8 oz. scale over the end of
the locking wedge and pu II parall el to the se lector
arm spring. It should require 1-1/4 to 1-3/4 oZSo to
start the selector arm moving. Reform the outer loop
of the selector arm spring, if necessary, to meet this
requirement. Replace the detent spring.
CAUTION: Care should be taken notto nick,
crimp or otherwise deform the
springor spring wire when reform-
ing loops.
2.ao (8)(0) STOP LEVER ECCENTRIC SCREW AD-
JUST ME NT (Figure 20) - See Note (A) -The stop
lever on the range finder assembly should overtravel
the latching face of the trip latch by not more than
.006
11
• To adjust, loosen the stop lever eccentric
screw lock nut and position the screw; then tighten
the lock nut, making certain that the tightening of the
lock nut does not disturb the adjustment.
2.ao(8)(p) TRIP LATCH SPRING COMPRESSION
(Figure 20) -
See Note (A) - Whenmeasuringthis re-
quirement, the range finder assembly should be held
in a horizontal position. Apply the push end of an
8 oz. scale, held in a vertical position to the trip
latch, as near to the stop lever as possible and push
upwardo It should
require 1 to 1-1/2 ozs. to start the
trip latch moving.
20ao(8)(q) STOP
LEVER SPRING TENSION
(Figure 10) - See Note (A)
NOTE: Be sure that the stop lever eccentric
has been adjusted before checking
this requirement.
With the trip latch plunger held oper-
ated, hook an 8 oz. scale on the end of the stop lever
of the range finderassembly and pull horizontally at
a right angle to the stop lever. It should require 3/4
to 1-1/4 ozs. to start the lever moving.
2.a.(8)(r) SELECTOR STOP ARM AND STOP
LEVER ENGAGEMENT ADJUSTMENT (Figure 11)
(For units
equipped with adjustable range scale as-
NOTE (A) These requirements should be checked with
the range finder assembly removed.
7

sembly) -With the selector magnet armature in the
spacing position, rotate the selector cam sleeve until
the stop arm moves the stop lever to its maximum travel
beyond the step of the trip latch. Loosen the range
scale assembly mounting screws and the positioning
link mounting screw just enough to make them friction
tight. Position the range scale assembly so that the
overtravel of the stop lever oeyond the trip latch is at
least half but not more than the width of the stop lever.
This should be checked with the range indicator set at
0, 60 and 120 on the range scale. Tighten the mount-
ing screws and the posi tioni ng link screw.
REPLACE THE RANGE FINDER ASSEMBLY, TAKING
CARE TO AVOID JAMMING THE TRIP LATCH
PLUNGER AGAINST THE ARMATURE TR IP-OFF
SCREW WHEN REMOUNTING.
2.a. (8)(s) TRIP-OFF SCREW ADJUSTME NT
(Figure 21) -There should be some clearance, not
more
than .004" between the stop lever and the trip
latch when the armature is in the unoperated position
and the selector cam sleeve is rotated unti I tine stop-
ping edgeof the stop lever is directly below the latch-
ing surface of the trip latch. While checking the
above clearance, take up the play in the stop
lever with ascrewdriver applied axially adjacent to
the spring hole as close to the bearing as possible with
thrust in
the direction of the trip latch. This clear-
ance should be held to aminimum to favor the II at,
least
.002" end play" of the trip plunger.
The trip latch plunger should have at
least .002" end playwhen the armature is held inthe
attracted position and when the stop lever is resting
against its eccentric stop post. (See Figure 20)
To adjust, loosen the trip-off screw
lock nut and position the screw to meet the first re-
quirement. The latter requirement serves as a check
on the trip-off screw adjustment and also on the ad-
justment of the se lector magnet bracket.
END OF HOLDING MAGNET SELECTOR
MECHANISM ADJUSTMENTS
NOTE: Before making
the following adjust-
ments, it is necessary to remove the
type basket from the typing unit. In
order to avoid stretching springs and
the possible bending of levers, the
following method is suggested: Un-
hook the code bar locking lever
spring, the signal bell hammer spring,
letters pull bar spring, the space re-
lease pull bar spring, and locking
baiIspring, if the unit is equipped
with amechanism to prevent printing
andspacingon lowercase blank. Re-
move
the three type basket assembly
mounting screws. Remove
the right
ribbon spool bracket front mounting
screw, loosen the rear mounting
8
1278
screw, and swing the bracket so that
the ribbon spool cup wi II not interfere
with the basket. Remove the bell-
and-break signal mechanism. Hold
the pull bars out of engagement with
the pull bar guide (I]S an aid in hold-
ing the pull bars out of engagement
with the pull bar guide, use a piece
of wire or string around the upper ends
of the pu II bars). Di sen gage lower
end of function pull bars from mecha-
nism on base, and slide the assembly
upward. Care shou Id be taken that
the pu II bar toes are not jammed
against the spacer locking baiI or the
signal bell hammer.
2.a.(9) SPACER DETENT AND SPACER DETENT
LEVER SPRING TENSION (Figures 22 and 23) -See
Note (B)
2.a.(9)(a) There should be .002" to .018" clear-
ance between the face of the spacer feed pawl and the
face of a tooth on the spacer ratchet wheel, when the
spacer operating lever roller is resting in the bottom
of the main bail plunger indent and the detent roller
is resting in the hollow between two teeth. Gauge
throughout one complete revolution of the ratchet
wheel. To adjust, loosen the left front motor plate
mounting screw and remove the two rear screws that
hold the motor plate to the base. Remove the key-
board drive gear assembly and swing the motor out so
as to gain access to the detent lever plate adjusting
screw with a screwdriver. Adjust the detent lever
plate, by meansof these screws, to meet the foregoing
requirements.
NOTE: It is possible to set the spacer detent
in aposition one full tooth off. This
error, however, wi II affect the de-
tent spring tension. Recheck the
spring tension.
2.a.(9)(b) With the detent roller resting in the
hollow between two teeth, hook a 4 lb. scale in the
spring hole and pull in line with the spring. It should
require 3-1/4 to 3-3/4 Ibs. to start the detent lever
moving.
NOTE: Since adjustments (a) and (b) are
interrelated, both should be re-
checked if one of them is altered.
Make sure that the feed pawl ad-
vances the ratchet only one tooth
during
one complete operating cycle.
2.a.(10) SPACER FEED PAWL SPRING TENSION
(Figure 22) -See Note (B) -Hook an 8 oz. scale over
the spacer feed pawl just below the sloped edge of the
pawl and pull as nearly at right angles to the pawl as
NOTE
(B) These requirements should be checked with
the type basket removed.
ORIGINAL

possible. It should require 1 to 2 ozs. to start the pawl
moving.
2.a.(11) SPACER OPERATING LEVER SPRING
TE NSION (Figure 23) -See Note (B) -Hook a12 lb.
scale over the spacer operating lever just below the
roller and pull as nearly parallet to the spring as
possible. It should require 5to 6Ibs. to start the
lever moving.
2.a.(12) RIBBON FEED LEVER SPRINGTENSION
(Figure 24) -See Note (B) -Loosen the ribbon feed
pawl and move it out of engagement with the ribbon
feed ratchet. With the ribbon feed lever roller in the
plunger indent, hook a 32 oz. scale over the top of
the ribbon feed lever and pull horizontally toward the
front of the unit. It should require 12to 18 ozs. to
start the levermoving. Tighten the ribbon feedpawl.
2.a.(13) SPACER LOCKING BAIL SPR'ING TEN;'
SION (Figure 25) - See Note (B) -Hook an 8 oz.
scale under the spring hole in the right extension of
the spacer locking bail and pull up vertically. It
should
require 1-1/2 to 2 ozs. to start the bail mov-
ing.
NOTE: When taking this tension, hold the
spacer locking pawl away from the
bail.
2.a.(14) FUNCTION BAR BRACKET PLATES AD-
JUST ME NT (Figure 26) -The two end pu II bars sup-
ported by the function bar bracket plates should have
an equal amount of play in the segment. Adjust both
the right and left function bar bracket plates by ro-
tating them on their mounting screws.
2.a. (15) PULL BAR SPR INGS TENSION (Figure 27)
See
Note (B) -Unhook the spring from each pu II
bar. With an 8 oz. scale held in a vertical position,
hook the scale in the spring eye. It should require
3 to 4 ozs. to pu II each character pu II bar spring to
its position length and 5-1/2 to 6-3/40zs. to pull
corresponding
function pull bar springs to their po-
sition length. Rehook springs.
Remount
the type basket. Care should be
taken that the pu II bar toes are not jammed against
the spacer locking bail and the sigmal bell hammer.
Replace the type basket assembly mounting screws.
Replace the right ribbon spool bracket front mounting
screw amd tighten rear mounting screw. See that the
function bar spring bracket is replaced. Replace the
code bar locking lever spring, the letters pull bar
spring,
the space release pull bar spring, and the sig-
nal bell hammer spring. Replace the bell and break
mechanism.
NOTE:
If the code bar assembly is removed
from
the pull bar guide plate, care
must be used in replacing, as excess-
ive tightening of the code bar post
nuts may
cause the code bar separator
ORIGINAL
127B
collar to become embedded in the
Germansilver separator washers. To
prevent this, tighten the nuts as
follows: First
back off the nuts and
turn the lower nut untiI the lock
washer is pressed flat. Then, with a
wrench, hold the lower nut in this
position while tightening the lock
nut.
2.a.(16) MAIN BAIL GUIDE POST ADJUSTMENT
NOTE: This
adjustment applies only to units
equipped with the main baiIguide post
and an adjustable eccentric bushing.
2. a. (16)(a) The main bail should be free through-
out its travel and the eccentric bushing should be so
positioned that the following adjustments can be met:
2.a. (16)(a)1. Pull Bar Guide Adjustment -See
2.a. (17). -
2.a. (16)(a)2. Main bail adjusting screwadjust...;
ment - See 2.a.(18).
2.a.(16)(b) To adjust the main bail guide post:
2.a.(16)(b)1. Position pull bar guide so that
it is in the middfe of the adjustment provided by its
. elongated mounting holes.
2.a. (16)(b)2. With the BLANK combination set
up, rotate the marn shaft untiI the main bail is oppo-
site the humps on the unselected pull bars. Position
the eccentric bushing so that the guide post is away
from the bottom of the baiIslot and so that the c lear-
ance between the main bail and the LETTERS and
FIGURES pull bar humps is approximately equal.
2.a.(16)(b)3. With the main bail roller on the
high part of its cam see that the clearance between the
code bars and the LETTERS and FIGURES pull bars is
approximatelyequal. (It may be necessary to advance
. the main bail adjusting screw to obtain clearance be-
tween the pull bars and the code bars.)
2.a.(16)(b)4. Recheck adjustment 2. Toobtain
both requirementsoutlinedin 2 and 3, itmaybeneces-
sary to relocate either the eccentric bushing, the type
bar basket or the pull bar guide.
2.a. (16)(b)5. After positioning the guide post,
check adjustment "\a).
2.a. (17) PULL BAR GUIDE ADJUSTMENT (Figure
28) -With
the BLA NK combination set up, there
should be .008" to .020" clearance between the un-
selected pull bars and the main bail, when the main
bail
is opposite the pull bar humpsand the play ofthe
NOTE (B) These requirements should be checked with
the type basket removed.
9

mainbai Iis taken up in a direction to make this clear-
ance aminimum. With the LETTERS combination set
up, there should be .008" to .020
11
clearance between
the main bail and the blank pull bar.
There should be .004" to .080" clearance
between the end of the No. 1 T -lever and the bottom
of the slot in the code bar, measured at the point of
closest approach. Also see that there is some clear-
ance; between the ends of Nos. 2, 3, 4, and 5 T -lev-
ers and their respective code bars, measured at the
point of closest approach. To meet these requirements,
adjust
the position of the pull bar guide by means of
its mounting screws.
2.a.(18) MAIN BAIL ADJUSTING SCREW AD-
JUSTMENT (Figure 1) -Rotate the main shaft until
the main bai Ihas reached its stop position (main baiI
roller on the high part of its cam). With the code
bars in the MARKI NG position, there should be .010"
to .050
11
clearance between the pu II bars and the code
bars when the play in the main bail and the pull bars
is
taken up to make this clearance aminimum. Check
this clearance with the code bars in the SPACING
position. To adjust, position the main bail adjusting
screw by means of its lock nut.
2~a.(19) SPACER LOCKING PAWL BRACKET AD-
JUSl'MENT (Figure 25) -The shoulder on the spacer
locking pawl should clear the notched part of the
spacer operclting lever by .040" to .050" when FIG-
URES combination is selected and the main shaft is ro-
tated vntil the spacer operating lever roller is on the
high part of the main bail plunger. To adjust, po-
sition the spacer locking pawl bracket by means of its
mounting screws.
2;,a.(20)
SPACER LOCKING BAIL FINGER AD-
JUSTNIENT (Figure 29) -There should be .015" to
.025" . clearance between the latching edge of the
spacer operclting lever and the latching edge of the
spacer locking pawl when the liE" combination is set
up and the main shaft rotated until the two edges are
in line. To adjust, hold the spacer locking bail by
means
of the No. 72574 holding tool inserted under
the type bar segment, alongside the carriage shaft
gear'and bend the spacer locking bail finger with the
No. 72575 bending tool. The bending tool should be
inserted
horizontally between the motor and the main
casting (on the left side of the unit).
2.a.(21) SPACER LOCKING PAWL SPRING TEN-
SION(Figul'e 25) -Set up the BLANK combination
and rotate the main shaft until the main bail is in its
extreme upper
position. Place the typing unit on its
back (resting on the motor). Hook an 8 oz. scaleover
the spacer locking pawl and pull up vertically. It
should require 1-1/2 to 3-1/2 ozs. to start the pawl
moving.
2.a.(22) CARRIAGE BRACKET LOCATING PLATE
After the front carriage bracket has been set in a
position where
the carriage moves freely back and
TO
1278
forth in
all positions of the spacing gear, the carriage
bracket locating plate should be moved against the
bracket so that its three projections make contact with
the bracket, and fastened in place. Thus, if the
bracket is moved thereafter, it may be replaced in its
proper position without further
adjustment.
2.a.(23) CARRIAGE LOCKING PAWL POST AD-
JUSTMENT (Figure 31) -When in the LETTERS po-
sition, the carriage locking pawl should set fully on
the locking toe when the play of the pawl is taken up
in either direction. To adjust, position the locking
pawl post by means
of its lock nut.
2.a. (24) LEFT TAPE GUIDE ADJUSTMENT (Figure
32) -The
left tape guide should cleat the platen roll
by
.004" to .010" fhroughoutonecompleterevoluHon
of the platen roll. Adjust by means of its mounting
screw.
2.a.(25} RIGHT TAPE GUIDE ADJUSTNIENT (Fig-
ure 32) -The right tape guide should be so adjusted
that when a piece of tape is inserted through both
right and left tape guides, it willalign with the platen
roll and the printing wi II be in the center of the tape.
Adjust the right tape guide by means of its mounting
screw.
There should be .010" to .020" clearance
between the platen roll and the end of the right tape
guide when gauged throughout one complete revolution
of the platen roll. Adjust by bending the right tape
guide.
2.a.(26} TAPE FEED ROLL SPRING TENSION
(Figure 32) -With the tape feed roll resting on the
platen, hook an 8 oz. scale over the end of the tape
feed roll bearing screw and pull at right angles to the
tape feed roll lever. It should require 6to 80zs. to
start the lever moving.
2.a.(27} TAPE CHUTE ADJUSTNIENT -The exit
tape-chute should be in alignment with the left hand
tape guide; adjust by means of the chute mounting
screws. There also should
be from .015" to .040"
clearance between the under surface of the left hand
tape guide and the top surface of the exit chute channel
when the platen assembly is in either the LETTERS or
FIGURES position. If necessary, adjust by bending
the chute bracket.
2.a.(28} SHIFT ROCKER POST ADJUSTNIENT
(Figure 33) -The sides of the shift rocker post should
be
parallel to the carriage shaft. Adjust by means of
the shift rocker post lock nut.
2.a.(29} CARRIAGE RETURN SPRING TENSION
(Figure 30) -Unhook the carriage return spring from
the spring post. With the carriage in the LETTERS po-
sition, hook an 8 oz. scale in the spring eye and pull
the spring to its normal position length. It should re-
quire 6.. 1/2 to 7-1/2 oZSo Replace spring.
ORIGINAL

2.a.(30)CARRIAGE LOCKING PAWL SPRING
TENSION (Figure 31) -With the carriage held back
far enough so that there is a clearance between the
carriage locking toe and the' carriage locking pawl,
hook an 8 oz. scale over the carriage locking pawl
just
below the spring hole and pull up in line with the
spring. It should require 1-1/2 to 2:-1/2 ozSo to start
the pawl moving.
2.a.(31) SHIFT ROCKER LEVER POST ADJUST-
ME NT (Figure 34) -The front surface of the shift roc-
ker lever post should be parallel to the fror:at edge of
the base plate 0Position the post by means of its lock
nut.
2.a.(32) CARRIAGE EXTENSION ADJUSTMENT
(Fig'Jre 33) -The
carriage extension should travel
equally on either side of a vertical line through the
center of the shift rocker bearing screw, when the
carriage is moved from the FIGURES to the LETTERS
position. Adjust by means of the carriage extension
mounting screws.
20a. (33) SH 1FT ROCKER ADJUSTMENT -With the
carriage in the FIGURES position, select the LETTERS
combination and rotate the main shaft until the main
baiI
roller is on the low part of its cam. Lift the main
bail by
hand to its highest position. The carriage
locking toe should overtravel the carriage locking pawl
not more
than. 020". Adjust the shift rocker by means
of its adjusting screw to meet this requirement. See
Figure
34 for location of parts.
NOTE: On those printers arranged to unshift
on SPACE as well as on LETTERS com-
bination, determine if the UNSH 1FT
ON SPACE gives the carriage a short-
er travel 0 If so, use this combination
instead of the LETTERS combination
in making the adjustment.
20a.(34) TYPE BAR REMOVAL -Remove the car-
riage spring, the ribbon from the guide, and the two
screws from
the carriage front bracket. Lift off the
carriage assembly. Move the type bar forward and
downward until the teeth on the type bar are disen-
gaged from those on the pu II bar. The type bar may
then be unhooked from the fulcrum rod and removed.
To replace a type bar, hook it over the
fulcrum rod. If the teeth are meshed properly, the
type bar wi II rest against the pad when the top of its
pull
bar is in line with the other pull bars. If the type
bar does not rest against the pad, move the type bar
downward again untiI the teeth are out of mesh and
then raise the pull bar as many teeth as is necessary
to permit the type bar to resume its correct position.
Replace the carriage making sure that the bracket is
against the positioning plate, and tighten the bracket
mounting screws.
The type bars should be free in their seg-
ment slots with aminimum amount of side play. To
ORIGINAL
127B
check the freeness of a type bar, move it clown so that
thepallet rests Iightlyon theplatenroll. Then, when
the type bar is released, it should return to its normal
position
against the type bar pad. If necessary, the
sides of the type bar may be lapped on a fine stone
to prevent binding in the segment slot.
2.a.(35) PULL BAR LOCK-OUT LEVER ADJUST-
ME NT (Figures 35 and 36) -With the platen in the
FIGURES position, the BLA NK combination selected,
and the main shaft rotated until the main bail is in its
uppermost
position, there should be .004" to .040"
clearance between the Sor Jpull bar (according to
type) and the code bars.
There should be 0004" to .040" clearance
between the BE LL pu II bar and the code bars when
the foregoing selection is applied with the platen in
the LETTERS position"
With
the platen in the FIGURES position,
the BELL combination selected, and the main shaft
rotated until the main bai Ihasmoved to approximately
.010
11
below the bell pull bar notch, there should be
at least .010" clearance between the BELL pull bar
and the lock out lever roller that is in contact with
the S or Jpull bar. When measuring this clearance
the play of the platen shaft, the shift rocker and the
lock out lever shou Id be taken up in the direction that
minimizes the clearance.
To meet the foregoing requirements, po-
sition the adjusting lever by utilizing the play in its
mounting
holes.
NOTE: As an increase in pull bar clearance
also increases the load on the platen
shift return spring, the platen shift
mechanism should
be checked (man-
uall y) for correct operation.
2.a.(36) RIBBON GUIDE ADJUSTMENT -There
should
be 0040" to .050" clearance between the print-
ing surface of the platen roll and both sides of the
ribbon guide. To measure this clearance, insert the
gauge horizontally between the printing surface of the
platen roll and both sidesof the ribbon guide. To ad-
just, position the ribbon guide by means of its mount-
ing screws. There should be 3/16" to 7/32" clearance
between the tongue of the guide and the side of the
platen roll. Bend the guide if necessary. Recheck the
previous adjustment.
2.a.(37) RIBBON SPOOL CUPS ADJUSTMENT
'(Figure 37) -The centers of both ribbon spool cup
rollers should be within 4-11/16" to 4-13/16" of the
typing unit base plate. To adjust, loosen the ribbon
spool
cup lock nuts and rotate the cups; tighten the
lock nuts.
20a.(38) RIGHT AND LEFT RIBBON SPOOL SHAFT
GEARS ADJUSTMENT (Figure 38) -The right and
left ribbon spool shafts should have some end play, not
11