Manual / Guide
Technical Manual 28 Transmitter Distributors Teletype Bulletin 252B
LAXD/LCXD TDs. (Hertzmail index titles 252B "Adjustments and Lubrication, Model 28 Transmitter-Distributor LAXD"; the cover reads as given here.) 89 pp
Manual / Guide
LAXD/LCXD TDs. (Hertzmail index titles 252B "Adjustments and Lubrication, Model 28 Transmitter-Distributor LAXD"; the cover reads as given here.) 89 pp
BULLETIN 252B TECHNICAL MANUAL 23 TRANSMITTER DISTRIBUTORS (PIVOTED AND FIXED HEAD MULTICONTACT) (LAXD, LCXD) TELETYPE’ ® @ @F conroration 5555 TOUHY AVENUE, SKOKIE, ILLINOIS SEE INDIVIDUAL SECTIONS FOR COPYRIGHT NOTICES. PRINTED IN U.S.A. 252B INTRODUCTION Bulletin 252B provides adjustments, lubrication, and dis- assembly and reassembly procedures for Model 28 Transmitter Dis- tributor Units (LAXD, LCXD). The bulletin is now made up of a group of appropriate, inde- pendent sections. They are separately identified by title and section number, and the pages of each section are numbered consecutively, independent of other sections. The identifying number of a section, a 9-digit number, appears on each page of the section, in the upper left corner of left-hand pages and the upper right corner of right-hand pages. To locate specific information, refer to the table of contents. Find the name of the involved component in column one and the title of the section incolumn two. The correct 9-digit section will then be found in column three. The sections are arranged in the order shown in the table of contents. Turn to page one of the section indicated where the contents of that section will be found (except where a section is small and does not require a listing of contents). The sections comprising this bulletin are now stocked sep- arately and may be individually ordered if the entire bulletin is not required. TABLE OF CONTENTS Equipment 28 Transmitter Distributor Units (LAXD, LCXD) 28 Transmitter Distributor Units (LAXD, LCXD) 28 Transmitter Distributor Units (LAXD, LCXD) Note: For information on motor units, 252B Contents Adjustments Lubrication Disassembly and Reassembly see Bulletin 295B. Change 3 November 1968 Section Issue 573-127-700TC 1 573-127-701TC 1 573-127-702TC 1 TELETYPE CORPORATION Skokie, Dllinois, U.S.A. SECTION 573-127-700TC Issue 1, October 1968 28 TRANSMITTER DISTRIBUTOR UNITS (LAXD, LCXD) ADJUSTMENTS CONTENTS PAGE CONTENTS PAGE GENERAL........-202e0 eee 2 Feed Lever ADJUSTMENTS .......--5-0+06. 4 Camshafts (LAXD) Camshaft bearing retainer ........ 3) Cam sleeve endplay........-+++¢-. 3) Idler gear assembly ....... wee 5 Camshafts (LCXD) Camshaft bearing retainer........ 4 Cam sleeve endplay.........- wae 4 Idler gear assembly .......-.--- 4 Clutch Mechanism Clutch shoe lever..........2.00- 9 Clutch shoe lever spring......... 8 Clutch shoe spring............. 8 Clutch trip lever upper extension . . 9 Clutch Trip Mechanism Armature bail spring ....... . Lees 6 Clutch armature air gap ......... 6 Clutch trip assembly mounting — plate... ee ee ee ee eee 6 Clutch latchlever spring ......... 7 Clutch trip lever spring ......... vi Magnet bracket .........-+-00- 7 Coverplate Mechanism (LCXD) Coverplate ....... 2.0. e ee ee eee 19 Coverplate detent spring ......... 19 Distributor Contact Mechanism Cam follower lever spring........ 10 Distributor block assembly ....... 11 Distributor cam follower guide..... 10 Distributor contact gap.......... 11 Distributor rocker compression SPVingS. . 2... eee ee ee ee eee 10 Feed lever set collar ........... 12 Feed lever spring (fixed head) (LCXD).......000- 2.0 eee eens 12 Feed lever spring (pivoted head).... 12 Fully Enclosed Last Character Contact Switch Last character contact assembly.... 33 Last character contact spring...... 33 Oil Reservoir ........-.-..-e0e8. 24 Pivoted Sensing Head Check pawl... 0... eee ee ee ees 29 Check pawl spring ............. 29 Feed pawl (final) ..........000- 29 Feed pawl (preliminary) ......... 29 Sensing head pivot screws ........ 28 Tape deflector.........-2+.54-5 28 Tape deflector bracket .......... 28 Tape retaining lidlatch.......... 30 Top plate... 6.1 ee ee ee ee ee 30 Sensing and Storing Switch Mechanism Contact lever slide............-- 27 Storing switch contact........... 27 Sensing Mechanism Auxiliary lever spring........... 23 Latchlever spring.........-.-.200- 25 Latch stripper bail spring........ 14 Pusher stripper bail spring ....... 14 Pushlever....... See et eee ee 23 Pushlever spring ..... Ce eee eee 25 Sensing pins (LAXD) ........... 23 Sensing pins (pivoted and fixed heads) (LCXD).......-..++500- 22 Sensing pin springs (fixed head) (LCXD). 2... ee ee ee ee eee 26 Sensing pin springs (pivoted head)... 26 Tape-out (6th) pin spring......... 26 © 1968 by Teletype Corporation All rights reserved Printed in U.S. A. Page 1 SECTION 573-127-700TC CONTENTS PAGE Start-Stop Switch Assembly (LCXD) Start-stop bail yield spring ....... 41 Start-stop lever switch bracket. .... 41 Storing Switch Mechanism Contact lever slide springs ....... 13 Storing switch assembly replacement ..........2202002 24 Storing switch contact alignment.... 13 Storing switch contact lever extension springs.............. 13 Storing switch guides ........... 13 Tape Depressor and Last Character Contact Switch Last character switch contact SPYingS....... 0. cee ee ee ee ee 32 Tape deflector spring........... 32 Tape depressor alignment........ 31 Tape depressor spring .......... 32 Tape Feed Mechanism (LCXD) Feed pawl... .... cee eee eee eee 18 Feed pawl spring.............. 18 Feed ratchet detent spring........ 20 Feed wheel detent.............. 20 Tape Guideplate (LC XD): Tape guide ...... ce eee eee 17 Tape guideplate............... 17 Tape Lid Mechanism (LCXD With Tape Lid Spring) Start-stop lever detent spring...... 16 Tape lid... . 2... cee ee ee ee ee 15 Tape lid release plunger spring .... 16 Tape lid spring ............... 16 Tape-Out and Tape Lid Pin Mechanism (LCXD Without Start-Stop Lever) Tape lidpin............0 00008 36 Tape lid pin spring............. 36 Tape-out and tape lid pin downstop .. 35 Tape-out and tape lid switch bracket... ....0.0. 0. eee ». 35 Page 2 1. CONTENTS PAGE Tape-Out and Tape Lid Switch (LCXD Without Start-Stop Lever) Instructions for removing tape-out and tape lid switch assembly ...... 34 Tape-out and tape lid switch ...... 34 Tape-Out Pin and Bail Assembly (LCXD With Start-Stop Lever) Tape-out bail yield spring........ 40 Tape-out extension bail spring..... 40 Tape-out pin spring ............ 40 Tape-Out Switch Assembly (LCXD With Start-Stop Lever) Tape-out pin................. 39 -Tape-out switch............... 38 Tape-out switch bracket ......... 39 Tight-Tape Switch Assembly (LCXD) Tight-tape arm ..............4. 37 Tight-tape bail yield spring....... 37 Tight-tape switch.............. 37 Tight-tape switch bracket ........ 37 Top Plate Assembly (LCXD) Top plate (fixed head)........... 21 TRANSMITTER DISTRIBUTOR CONTACT STROBING........... 42 GENERAL. ........0.0 000080 42 LAXD CONTACT STROBING PROCEDURE — 1-CYCLECAM.... 43 LAXD CONTACT STROBING PROCEDURE — 2-CYCLE CAM..... 351 LCXD CONTACT STROBING — PIVOTED AND FIXED HEAD...... 36 LCXD CONTACT STROBING — FIXED HEAD................. 62 GENERAL 1.01 This section contains the adjustment procedures for the maintenance of the LAXD and LCXD transmitter distributor units. This material provides complete adjusting infor- mation for maintenance of these units. 1.02 References to left, right, front, rear, up, down, etc, refer to the apparatus in its normal operating position as viewed from the operator's positionin front of the unit. Parts are shown in an upright position unless other- wise indicated. 1.03 Thecover may be removed for inspection of the unit. However, before any mainte- nance procedures are started, the unit should first be removed from its subbase to disconnect the power and to permit the unit to be turned bottom upward so that parts on the bottom of the unit are more accessible. CAUTION: DISCONNECT POWER BEFORE MAKING ANY ADJUSTMENTS. 1.04 Where arequirement calls for the clutch to be disengaged, the clutch shoe lever must be fully latched between its trip lever and latchlever so that the clutch shoes release their tension on the clutch drum. When engaged, the clutch shoe lever is unlatched and the clutch shoes are wedged firmly against the clutch drum. Note: When rotating either the sensing shaft or distributor shaft by hand, the clutch does not fully disengage upon reaching its stop position. In order to relieve the drag on the clutch and permit the shaft to rotate freely, apply pressure on the lug of the clutch disc with a screwdriver to cause it to engage its latchlever and, thus, disengage the internal expansion clutch shoes to prevent them from dragging on the clutch drum. 1.05 The figures in this section show the ad- justing tolerances, positions of moving parts, and spring tensions. The illustrations ISS 1, SECTION 573-127-700TC are arranged so that the adjustments are ar- ranged in the sequence that would be followed if a complete readjustment of the apparatus were being made. Where an illustration shows inter- related parts, the sequence that should be fol- lowed in checking the requirements and making the adjustments shown is indicated by the letters (A), (B), (C), ete. Note: On all LAXD units having 2-cycle cams, both halves of the cam sleeve should be checked. 1.06 The spring tensions given are indicated values and should be checked with proper spring scales in the position indicated. Thead- justing illustrations show the angle at which the scale should be applied when measuring spring tensions. 1.07 Unless otherwise indicated, the adjust- ments in this section are common to both transmitter distributor units. 1.08 Tools and spring scales required to per- form the adjustments are not supplied as part of the equipment and are listed separately in Section 570-005-800TC. 1.09 Ifa part that is mounted on shimsis re- moved, the number of shims used at each of its mounting screws should be noted so that the same shim pile-up can be replaced when the part is-remounted. 1.10 The technician should refer to the ex- ploded views found in the appropriate parts literature for an illustration of the mech- anism to be disassembled, for location and visual identificationof parts, and detailed disassembly and reassembly features. The technician should read, and thoroughly understand, the procedures before making any adjustments. Page 3 SECTION 573-127-700TC SDJUSTMENTS 2.04 Camshafts (LCXD) Note 1: The following requirements apply to both the distributor and sensingcam sleeves. These mechanisms should not be disturbed unless there is reason to believe the requirements are not met. DRIVE DRUM MOUNTING SCREW GEAR BEARING CAM SLEEVE SPACER CAM SLEEVE , SPACER M7 DRIVE GEAR DRUM MOUNTING SCREWS a Ba (A) CAM SLEEVE ENDPLAY Requirement Min some --~-Max 0.010 inch play between cam sleeves and spacers. To Adjust Remove clutch drum drive gear and loosen drum mounting screw. Disengage clutch and position cam sleeve. Tighten drum mounting screw and reinstall drive gear. (C) IDLER GEAR ASSEMBLY LLL NW DRUM Requirement Clearance between idler gear and sensing shaft gear, and between DRIVE idler gear and distributor shaft gear at point where backlash is GEAR minimum Min some ---Max 0.003 inch To Adjust Position idler gear assembly with locknut loosened. Recheck gear play through one revolution of gears. BEARING (B) CAMSHAFT BEARING RETAINER RETAINER Requirement -—-— When mounting shaft assembly, bearing should seat properly. (No clearance per- missible between bearing and mounting surface. ) To Adjust Rotate bearing retainer 180 degrees and position by pushing downward firmly. BALL BEARING BEARING RETAINER MOUNTING SCREW Page 4 2.02 Camshafts (LAXD) ISS 1, SECTION 573-127-700TC Note: The following adjustments apply to both the distributor and sensing cam sleeves. These mechanisms should not be disturbed unless there is reason to believe the requirements are not met. (A) CAM SLEEVE ENDPLAY Requirement To Adjust (C) IDLER GEAR ASSEMBLY Requirement Clearance between idler gear and sensing shaft gear and between idler gear and distributor shaft gear at point where backlash is minimum Min some ---Max 0. 003 inch To Adjust Position idler gear assembly with locknut loosened. Recheck gear play through one revolution of gears. BEARING BALL BEARING RETAINER ee Min SOme---Max 0.010 inch play between sleeve and spacer. DISTRIBUTOR CAM SLEEVE Remove clutch drum drive gear and loosen drum mounting screw. Disengage clutch and positioncam sleeve. Tightencam sleeve mounting screw and reinstall drive gear. DISTRIBUTOR CLUTCH DRUM DRUM DRIVE GEAR DRUM MOUNTING SCREW DRIVE GEAR MOUNTING SCREWS LOCKNUT IDLER GEAR SENSING CLUTCH DRUM DRUM DRIVE GEAR (B) CAMSHAFT BEARING RETAINER Requirement When mounting shaft assembly, bearing should seat properly. (No clearance permissible between bearing and mount- ing surface. ) To Adjust Rotate bearing retainer 180 degrees and position by pushing downward firmly. BEARING RETAINER MOUNTING SCREWS Page 5 SECTION 573-127-700TC 2.03 Clutch Trip Mechanism MAGNET BRACKET ASSEMBLY Note: Adjustments apply to both clutch trip mechanisms. _—— SPRING (A) CLUTCH ARMATURE AIR GAP POST Requirement Air gap between armature and magnet assembly bracket with armature flush against magnet core MOUNTIN Min 0.004 inch---Max 0. 008 inch SCREW To Adjust HINGE Remove armature extension spring. Position 7 hinge with spring post and hinge mounting screw ‘ loosened. Recheck air gap and replace spring. : (B) CLUTCH TRIP ASSEMBLY MOUNTING PLATE MOUNTING SCREW PLATE (Rear of Unit) _—__ Requirement Clearance between end of armature bail and latching surface of clutch trip lever lower extension with clutch triplever re- setextensiononhigh partofcam. (Take up play in parts for minimum clearance. ) . Min 0.020 inch---Max 0.030 inch — CLUTCH TRIP LEVER RESET EXTENSION To Adjust Position plate with screwdriver in lower adjusting slot with plate adjusting screw and plate mounting screw loosened. (Tak up play in trip lever in direction of cam. ) CLUTCH TRIP LEVER LOWER EXTENSION ADJUSTING SLOT PLATE ARMATURE ADJUSTING SCREW BAIL (C) ARMATURE BAIL SPRING Requirement Invert unit. Trip clutch magnet and rotate shaft manually until trip lever reset extension is on high part of its cam. For LCXD unit Min 3 oz---Max 4-1/2 oz / For LAXD unit Min 2-1/2 oz---Max 4-1/2 oz to start armature bail moving. Page 6 ISS 1, SECTION 573-127-700TC 2.04 Clutch Trip Mechanism (continued) Note: Adjustments apply to both clutch trip mechanisms. (A) CLUTCH LATCHLEVER SPRING Requirement Clutch latchlever on low part of clutch disc and unit upright. Scale applied to bent ear of latchlever hori- zontally. Min 1/2 0z---Max 1-1/2 oz to start latchlever moving. CLUTCH DISC LATCHLEVER : CLUTCH LATCH- Zz LEVER SPRING ADJUSTING a SLOT BRACKET CLAMPSCREW CLUTCH +" TRIP LEVER LOWER EXTENSION fr 2 _ _—4 (B) CLUTCH TRIP LEVER SPRING , eo Requirement A\\\AY WANA With clutch just tripped, hold @ Vy ATW y armature against core. Scale applied to trip lever lower ex- BRACKET CLUTCH TRIP tension in line with spring. MOUNTING SCREW LEVER SPRING Min 2 0z---Max 3-1/2 oz to start trip lever lower ex- tension moving. (C) MAGNET BRACKET Requirement Clearance between armature bail and top edge of trip lever lower extension with clutch trip lever reset extension on high part of cam and armature flush against core. (Take up play for minimum clear- ance. ) Min 0, 030 inch---Max 0.040 inch To Adjust TRIP LEVER Insert screwdriver in upper slot and pivot LOWER bracket, with bracket mounting screw and EXTENSION clampscrew loosened. Page 7 SECTION 573 -127-700TC 2.05 Clutch Mechanism Note 1: Adjustments (A) and (B) are adjusted at the factory and should not be disturbed unless associated mechanisms have been removed for servicing or there is reason to believe that the requirements are not met. The following adjustments apply to both the sensing clutch and distributor clutch. CLUTCH SHOE = LEVER TOP-LUG CLUTCH DRUM CLUTCH SHOE STOP-LUG PRIMARY LEVER SPRING CLUTCH SHOE CLUTCH SHOE SPRING SECONDARY CLUTCH SHOE Page 8 (A) CLUTCH SHOE LEVER SPRING Requirement Clutch engaged and cam disc held to prevent turning. Scale pulled at tangent to clutch. Min 15 oz---Max 20 oz to move clutch shoe lever in contact with stop-lug. (B) CLUTCH SHOE SPRING Note 2: It is necessary to remove the clutch from the main shaft to facilitate this check. Requirement Clutch drum removed. Scale applied to primary shoe at a tangent to the friction surface. Min 3 0z---Max 5 0z to start primary shoe moving away from secondary shoe at point of con- tact. 2.06 Clutch Mechanism (continued) Note 1: Adjustments (A) and (B) apply to all clutches. sree (A) CLUTCH TRIP LEVER UPPER EXTENSION ISS 1, SECTION 573-127-700TC (1) Requirement Clutch trip lever latched (clutch in stop position). Clutch trip lever upper extension should fully engage clutch shoe lever. To Adjust Position upper extension, with clutch trip lever clampscrew loosened. (2) Requirement With armature in attracted position, there should be some clearance be- tween clutch trip lever upper ex- tension and stop-lug when clutch is rotated to make clearance a minimum. To Adjust Refine Requirement (1), if neces- sary, so that clutch trip lever upper extension is under or over flush with stop-lug by not more than LUTCH SHOE LEVER CLUTCH TRIP LEVER UPPER EXTENSION 0.015 inch. (B) CLUTCH SHOE LEVER STOP- Requirement CLAMP- LUG Gap between clutch shoe lever and its stop-lug SCREWS should be 0.055 inch to 0.085 inch greater when | clutch is engaged than when clutch is disengaged. DRUM Note 2: If this unit is to operate at 60 wpm, gap SCREW To Adjust Engage a wrench or screwdriver on a screw on the wating A: adj usting disc. Rotate dise with clampscrews ; loosened and clutch disengaged. CLUTCH DRUM CLUTCH SHOE LEVER Note 3: After adjustment, disengage clutch, remove drum mounting screw and rotate drum in its normal direction of rotation to make certain that it does not drag on shoe. If drum drags, refine CLUTCH SHOE LEVER adjustment. Page 9 SECTION 573-127-700TC 2.07 Distributor Contact Mechanism Note 1: Remove oil reservoir and distributor block assembly for following adjustments. (A) DISTRIBUTOR CAM FOLLOWER GUIDE Requirement At least one cam follower should en- gage cam by full thickness of the follower as follower is moved from side to side in its guide slot. Other cam followers should engage by 75 percent in same manner when play CAM SLEEVE! CAM MOUNTING is taken up for a maximum. All FOLLOWERS SCREWS cam followers should move freely in guide slots. CAM To Adjust FOLLOWER Position guide with cam follower GUIDE guide mounting screws loosened. rer Recheck requirement. \ "> Note 2: With distributor block removed, adjust contacts so that there is 0.070 to 0.080 inch between rocker 1 d oil guard. DISTRIBUTOR BLOCK 5070 evers and ol guar “| 1* 0. 080 (B) DISTRIBUTOR ROCKER COMPRESSION SPRINGS OIL Requirement GUARD With compression springs installed, apply spring ~ scale at lower end of rockerand push (vertically ROCKER downward) LEVER Min 6-1/2 0z---Max 9-1/2 0z boas to separate the contacts. | l To Adjust " Rotate contact screws. (If the requirement cannot ROCKER LEVER be met after compression springs are replaced, COMPRESSION SPRING check rocker lever tension springs. ) CAM SLEEVE (C) CAM FOLLOWER LEVER SPRING Requirement Cam follower lever on high part of cam. Seale applied just below sliding surface of lever hori- zontally. Min 1/2 oz---Max 1-1/2 oz to start each lever moving. CAM FOLLOWER LEVER A \ > CAM FOLLOWER LEVER SPRING Page 10 ISS 1, SECTION 573-127-700TC 2.08 Distributor Contact Mechanism (continued) Note 1: Replace distributor block. (B) DISTRIBUTOR CONTACT GAP Requirement Contact gap with cam follower lever on high part of cam Min 0.025 inch---Max 0.030 inch To Adjust Trip clutch manually to position cam. Turn contact screw to adjust. Check all contacts. DISTRIBUTOR a CAM CAM FOLLOWER DISTRIBUTOR je: BLOCK ™— GUIDE MOUNTING SCREWS = MOUNTING SCREWS CAM FOLLOWER———————- LEVERS (A) DISTRIBUTOR BLOCK ASSEMBLY Requirement Rockers shouidfuily engage insulated portion of respective cam follower levers. To Adjust Position block with distributor block mounting screws loosened. Note 2: For refinement of distributor contact adjustments, refer to distributor and transmitter contact strobing. Page 11 SECTION 573-127-700TC 2.09 Feed Lever (A) FEED LEVER SET COLLAR Requirements - Min some---Max 0,015 inch 7 clearance between feed lever and collar ia COLLAR when feed lever is free in its guide slot. J To Adjust Position feed lever with set collar screws loosened. Feed lever should move freely without binding at guide or collars. SET | do} ||}lop_ Note: After tightening setscrews, re- check adjustment for binds between FEED LEVER———> GUIDE feed lever and collars, and between feed lever and guide. (B) FEED LEVER SPRING (PIVOTED HEAD) To Check Trip sensing clutch. Rotate shaft until roller is off feed cam. Apply FEED LEVER scale to feed lever. WA Requirement --——— Min 30 oz---Max 40 oz \ ae ROLLER to start feed roller moving away from cam. FEED LEVER FEED LEVER SPRING (FIXED HEAD) SPRING (LCXD) Requirement FEED CAM With sensing clutch in stop position Min 10 0z---Max 17 0z to move feed lever away from its cam surface. Page 12 ISS 1, SECTION 573-127-700TC 2.10 Storing Switch Mechanism (A) STORING SWITCH CONTACT ALIGNMENT To Check STORING BLOCK Remove storing switch assembly. o~ Requirement _ “~~ Contact lever extensions should be per- pendicular to storing block. To Adjust Turn each contact screw with hex wrench. Gauge by eye. -C CONTACT LEVER (B) STORING SWITCH CONTACT LEVER EXTENSION EXTENSION SPRINGS (1) Requirement CONTACT LEVER Min 1-3/4 0z---Max 3-1/2 oz EXTENSION SPRINGS to start each contact lever extension . moving. (2) Requirement CONTACT SCREWS Min 1/2 0z---Max 1 oz to start tape-out (6th) contact lever extension moving. (C) STORING SWITCH GUIDES STORING Note 1: Before switchassembly is secured to unit, SWITCH rotate slide eccentric to make clearance between GUIDE slide stop postand end contact lever slides minimum. (1) Requirement , Min 0.005 inch---Max 0.012 inch clearance between end slides and stop post. (Hold slides away from stop post.) Note 2: After CONTACT LEVER SLIDE (2. 24) adjustment, clearance may be 0.005 to 0.015 inch. MOUNTING SCREWS CONTACT LEVER & (2) Requirement SLIDE SPRING Contact lever slides free in guide slots and parallel to side plates (gauge by eye). To Adjust Position guide with its mounting screws loosened. (D) CONTACT LEVER SLIDE SPRINGS To Check Select blank combination, trip sensing clutch, and rotate shaft to stop position. Hold exten- sion levers away. (1) Requirement Min 4 0z---Max 6 oz to start each contact lever slide moving. (2) Requirement Min 1-1/2 oz---Max 3 oz to start tape-out (6th) lever slide moving. Page 13 SECTION 573-127-700TC 2.11 Sensing Mechanism PUSHER STRIPPER BAIL SPRING \ Requirement With unit upright, select blank combination, PUSHER trip clutch, and rotate shaft to stop position. STRIPPER 32 oz scale applied to point just below spring anchor. Min 7 0z---Max 11 oz to start bail moving away from cam. PUSHER STRIPPER BAIL SPRING Note: Install oil reservoir before making the LATCH STRIPPER BAIL SPRING adjustment. AIL SING LATCH STRIPPER BAIL SPRING To Check Trip clutch, rotate shaft so latch bail follower roller is on low part of cam. Apply scale to top of latch stripper bail. Requirement Min 2-3/4 oz---Max 6 0z to start latch stripper bail moving. LATCH STRIPPER BAIL CAM LATCH STRIPPER BAIL Page 14 ISS 1, SECTION 573-127-700TC 2.12 Tape Lid Mechanism (LCXD with Tape Lid Spring) TAPE LID Note 1: Remove top and tape guideplates. Lubricate mating surfaces prior to adjustment. (1) Requirement Min some---Max 0.010 inch clearance between pivot shoulder and tape lid when lid is pressed against notch in tape guideplate, and feed wheel slots and tape-out pin holes are lined up. To Adjust Loosen tape lid bracket mounting nuts. Using a TP156743 gauge, line up feed wheel groove in tape lid with slot in tape guideplate. Position tape lid bracket to meet requirement. (2) Requirement With tape lid front bearing surface touching tape guideplate, clearance between tape lid and and tape guideplate Min 0.010 inch---Max 0.018 inch measured at tape lid fin in line with rear tape guide (2nd fin from rear). Note 2: When both top and tape guideplates are assembled on unit, left edge of lid may touch top plate and some change in this clearance may be expected. To Adjust With tape lid bearing bracket mounting screws friction tight, and tape lid pressed against tape guideplate, position bearing bracket. Recheck Requirement (1). TAPE LID PLUNGER FEED WHEEL SLOT. | TAPE, LID aww — y —/ su, 4 DD OO OM ae MM Me MM pO haha 1O TAPE GUIDEPLATE | . A © © ECCENTRIC MOUNTING POST NUT GAUGE —“—_L PRESS (e) vi 5 LATCH POST | GUIDEPLATE LATCH BAIL NOTCH IN TAPE a (3) Requirement Some endplay in release plunger when lid is latched against tape guideplate. To Adjust With eccentric mounting post nut friction tight and tape lid raised, rotate high part of eccen- tric post towards mounting bracket. Close tape lid. Rotate eccentric counterclockwise (as viewed from slotted end of eccentric post) until flat of latch post fully engages latch bail flat. Rotate eccentric clockwise to take up all play in parts, and to seat open end of tape lid against tape guideplate. To Check With tape lid held down manually, latch tip should clear latch post when release button is operated. With tape lid latched, tip of latch should project beyond flat of latch post, and there should be some endplay in release button. Page 15 SECTION 573-127-700TC 2.13 Tape Lid Mechanism (LCXD with Tape Lid Spring) (continued) TAPE LID SPRING To Check | TAPE LID Open tape lid. Hold unit so tape guideplate | is horizontal. Apply scale at top of lid MOUNTING SCREW | mmediately left of tape-out pin hole. Hold plunger fully depressed. _ au OIL LPI I LIL I LI I LILI I a a Requirement Min 3 0z---Max 4-1/2 oz to move open end of tape lid against tape guideplate. TAPE GUIDEPLATE START-STFOP LEVER TAPE LID BEARING BRACKET DETENT BAIL START-STOP LEVER DETENT SPRING RELEASE PLUNGER To Check. Place start-stop lever in run position. Requirement x Min 14 0z---Max 22 oz id to start detent bail moving away from start- stop lever detent. TAPE LID RELEASE PLUNGER SPRING To Check Hold tape euideplate so top surface is horizontal. Open tape lid. Requirement Min 28 o7---Max 48 oz to start tape lid bail moving. Page 16 ISS 1, SECTION 573-127-700TC 2.14 Tape Guideplate (LCXD) TAPE GUIDE Requirement With gauge properly positioned Min some---Max 0.003 inch between gauge and tape guides. Fr To Adjust Loosen tape guide mounting nuts to friction ) tight. Properly position gauge on tape guideplate. Position tape guides to meet requirement. io --~-4- XN TAPE GAUGE GUIDE TP156743 TAPE GUIDE PLATE (1) Requirement Shoulder of feed wheel post should not interfere with top plate or tape guideplate mounting brackets. To Adjust Rotate feed wheel post with its mounting nut loosened. (2) Requirement Tape guideplate should rest firmly against at least three projections of the front and rear plate. To Adjust With tape-out downstop in its lowermost position and tape guideplate mounting bracket (front and rear) nuts friction tight, trip clutch and rotate shaft until sensing pins are in their uppermost position. With tape lid raised and start-stop lever in RUN position, press tape guideplate into position. Guide mounting screws into notch of front and rear plate, and place sensing pins adjacent to left edge of guideplate. Place tape-out pin into its hole. Tighten each bracket mounting screw. (3) Requirement Outer edges of mounting brackets and outer edges of mounting stud shoulders should align and project equally on front and rear brackets. To Adjust Move tape guideplate toward front or rear. Tighten nuts only after top plate is adjusted. START-STOP LEVER (IF NOT PRESENT ON UNIT, DISREGARD INSTRUCTIONS PERTAINING TO. START-STOP LEVER.) MOUNTING STUD SHOULDER FRONT PLATE PROJECTION FEED WHEEL POST MOUNTING NUT \ TAPE GUIDEPLATE TAPE GUIDEPLATE TAPE-OUT MOUNTING BRACKET DOWNSTOP | Page 17 SECTION 573-127-7T00TC 2.15 Tape Feed Mechanism (LCXD) (B) FEED PAWL SPRING To Check Remove top plate, disengage clutch. Requirement Min 1/4 0z---Max 1-1/2 oz to start feed pawl moving. ADJUSTING SLOT FEED SPRING FEED ROLLER (A) FEED PAWL Note: If unit is equipped with start-stop lever, place it in RUN position. To Check Remove top plate. Trip clutch and rotate camshaft until feed roller is on high part of cam. Rotate ratchet wheel until oil hole is up. Take up play by pressing down lightly on right end of feed pawl bail. Requirement Min some---Max 0.003 inch clearance between feed pawl and ratchet tooth. To Adjust Position feed lever by means of the adjusting slot with its locknut loosened. Page 18 ISS 1, SECTION 573-127-700TC 2.16 Coverplate Mechanism (LCXD) COVERPLATE DETENT SPRING To Check Remove coverplate. Requirement -Min 28 0z---Max 48 0z ___ to start plunger moving. COVER- PLATE DETENT MOUNTING DETENT BRACKET NUT COVERPLATE (1) Requirement Coverplate held flush against top plate by detent action. (2) Requirement Coverplate rests on at least three side frame projections. (3) Requirement Front edge of cover and top plates in line. To Adjust Loosen detent nuts on side frames and move them to extreme lower right position. Tighten nuts. Loosen four bracket mounting nuts on coverplate and position to meet requirements. Tighten nuts. If coverplate does not detent properly (Requirement (1)), reposition detent nuts. Page 19 SECTION 573-127-700TC 2.17 Tape Feed Mechanism (LCXD) (continued) ie TOP PLATE (A) FEED WHEEL DETENT Note 1: If unit is equipped with a start- stop lever, place it in STOP position. TAPE TAPE — GUIDE - PLATE 0990000000000000000000 00000000 000600000000 ©0000000000000 090000 290000000000000000000 90000000000000000000 0 0000000000000000000 _ at FEED RATCHET FEED PAWL To Check Place a LTRS perforated tape over feed wheel, taking up play in feed holes toward the right. Requirement Sensing pins should be centrally located in code holes. To Adjust Position feed wheel detent eccentric with its lockscrew and guidepost friction tight. High part of eccentric should be toward right. Holdeccentric and tighten guidepost and lockscrew. Recheck ad- justment. Note 2: Feed pawl should be held away to facilitate adjustment. (B) FEED RATCHET DETENT SPRING Requirement With feed pawl held away from ratchet wheel Min 7 0z---Max 13 oz Page 20 to move detent roller away from fully detented position. FEED WHEEL DETENT FEED WHEEL DETENT ECCENTRIC (HIGH PART OT RIGHT) FEED RATCHET ‘DETENT SPRING ISS 1, SECTION 573-127-700TC 2.18 Top Plate Assembly (LCXD) TOP PLATE (FIXED HEAD) (1) Requirement Top plate flush to 0.003 inch under flush with tape guideplate within width of tape lid. _____ To Adjust Loosen mounting bracket nuts until brackets are friction tight. Press top plate into position. Top plate should rest on at least three projections of side plates. Make sure the tight-tape arm extension is under the top plate. (2) Requirement Feed wheel slot and tape guideplate slot should line up. To Adjust Move top plate to line up feed wheel slot. Do not disturb Requirement (2) of TAPE GUIDEPLATE (2.14) adjustment. TAPE LID TOP PLATE > TAPE GUIDE TOP PLATE U TAPE GUIDE- MOUNTING PE ¢ SCREW TE TAPE GUIDEPLATE MOUNTING SCREW (3) Requirement With tape lid latched, clearance between tape lid extension covering feed wheel slot, and top plate Min 0.010 inch measured at curved portion of top plate, and Min 0.010 inch---Max 0.025 inch measured at flat portion of top plate. Also Min 0.010 inch---Max 0.018 inch clearance between tape lid and tape guideplate measured in area between tape guides (play in tape lid taken up toward tape guideplate). To Adjust Loosen two screws holding tape lid mounting brackets together, and position tape lid. Recheck Requirements (1) and (2) of TAPE LID (2. 12) adjustment. Page 21 SECTION 573-127-700TC 2.19 Sensing Mechanism (continued) TOP PLATE | SENSING PINS (PIVOTED AND FIXED HEADS) (LCXD) ECCENTRIC SHAFT Requirement +— In stop position, highest sensing pin should be flush to 0.005 inch below surface of top plate. To Adjust With clutch latched and yoke in locked posi- tion, loosen nuton eccentric shaft and adjust eccentric shaft with high part of eccentric toward right of unit. Tighten nut, rotate shaft, and recheck. Check throughout sens- ing head travel. Note: High part of eccentric is marked on front end of shaft by a smal] indentation. ECCENTRIC SENSING SHAFT BAIL Page 22 2.20 Sensing Mechanism (continued) TOP PLATE SENSING CAM SENSING BAIL ECCENTRIC SHAFT AUXILIARY LEVER SPRING ISS 1, SECTION 573-127-700TC (A) SENSING PINS (LAXD) Requirement In stop position, highest sensing pin should be flush to 0.005 inch below sur- face of top plate. To Adjust With clutch latched and yoke in locked position, loosen nut on eccentric shaft and adjust eccentric shaft with high part of eccentric towardrightof unit. Tighten nut, rotate shaft, and recheck. Check throughout sensing head travel. For 2-cycle operation, check both halves of cam sleeve. Note: High part of eccentric is marked on front end of shaft by a small indenta- tion. (C) AUXILIARY LEVER SPRING To Check Each auxiliary lever on low part of its cam. Scaleapplied to lever just to right of spring. Pushlever held away. Requirement AUXILIARY Min 1/2 oz---Max 3 oz to start auxiliary lever moving. (B) PUSHLEVER Requirement With first one and then the other of the two auxiliary levers on the low part of the cam, the auxiliary lever with the least clearance should clear the tip of its pushlever by AUXILIARY LEVER PUSH - LEVER ECCENTRIC SHAFT Min 0. 020 inch---Max 0.045 inch To Adjust With clutch in the stop position and with pushlever eccentric shaft locknut (front plate) loosened and high part of eccen- tric located toward the upper right, rotate eccentric toward right or left. Recheck by rotating cam sleeve. Page 23 SECTION 573 -127-700TC 2.21 Storing Switch Mechanism and Oil Reservoir (A) STORING SWITCH ASSEMBLY REPLACEMENT SLIDE AND LATCH- LEVER GUIDE Requirement Storing switch assembly should align J with latchlevers so that latchlevers and GUIDE | slides function without binding. ADJUSTING . SCREWS Ni To Check Manually push latch bail follower away from cam until latches are free from =) guide. Release latch bail follower and note if latches fall into their respective poe slots. STORING SWITCH SCREWS PIVOT ABOUT THIS POINT STORING CONTACT BLOCK MOUNTING SCREWS OIL WICK (B) OIL RESERVOIR RETAINER Requirement Each oil wick rests lightly on high parts offrontandrear cam of each camsleeve. To Adjust Trip both armatures and rotate shaft until high part of front and rear cam of each sleeve is under its wick. Position oil reservoirassembly with its mounting screws (2) loosened. When cam Sleeve is rotated, teeth of wick retainer should not deflect upward more than 1 32 inch (gauge by eye). Refine adjustment by slightly bending teeth on wick comb spring. DISTRIBUTOR SENSING CAM SLEEVE CAM SLEEVE Page 24 2.22 Sensing Mechanism (continued) LATCHLEVER LATCHLEVER SPRING ISS 1, SECTION 573-127-700TC (B) LATCHLEVER SPRING To Check Select blank combination. Trip sensing clutch and rotate shaft to stop position. Apply scale at right angle to top of latchlever. Requirement SENSING PIN PUSHLEVER CONTACT SLIDE ZONTACT SLIDE Min 1 0z---Max 3 oz to start latchlever moving. Note 1: Take care not to damage push- lever springs in checking requirement. (A) PUSHLEVER SPRING To Check Trip clutch and rotate shaft until sen- sing pins are in uppermost position. Apply scale at right angle to extreme lower end of pushlever (sensing push- levers only). Requirement PUSHLEVER SPRING Min 1 0z---Max 2 0z to start pushlever moving. Note 2: Be sure contact slides do not interfere with movement of pushlevers., Page 25 SECTION 573-127-700TC 2.23 Sensing Mechanism (continued) (C) TAPE-OUT (6TH) PIN SPRING To Check Sensing head in locked position, and tape -out pin in uppermost position. Apply scale in line with pin. Requirement Min 2-1/2 oz---Max 5 0z for one-cycle clutch. Min 1 oz---Max 2 0z for 2-cycle clutch (LAXD unit) to move sensing pin flush with top plate. Note: When checking the spring, allow the pushlever to remain under the transfer lever. ie TAPE-OUT (6th SENSING PIN ~~ (B) SENSING PIN SPRINGS (PIVOTED HEAD) To Check With sensing head in locked position, trip sensing clutch and rotate sensing shaft until sensing pins are in upper- most position. While holding pushlevers away from transfer lever, apply scale in line with pin. Requirement Min 3 0z---Max 4 0z to move sensing pins flush with top plate. _| TOP PLATE J SENSING PIN ra SPRING SENSING PIN TRANSFER LEVER PUSHLEVER CONTACT SLIDE TOP PLATE SENSING PIN / (A) SENSING PIN SPRINGS (FIXED HEAD) (LCXD) To Check With unit in upright position, trip sens- ing clutch and rotate sensing shaft until sensing pins are in uppermost position. While holding pushlevers away from transfer lever, apply scal-: in line with pin. Requirement Min 2 0oz---Max 3 oz to move sensing pins flush with top plate. ISS 1, SECTION 573-127-700TC 2.24 Sensing and Storing Switch Mechanism (A) CONTACT LEVER SLIDE Requirement Clearance between closest pushlever and contact lever slide when sensing pins are in uppermost position, pushlevers are selected, and latchlevers are stripped Min 0.005 inch---Max 0.015 inch To Check Trip sensing shaft clutch and rotate shaft until sensing pins are in uppermost position. Trip latchlevers manually. To Adjust Position eccentric shaft toward the right with locking nuts loosened. Begin with high part of eccentric in upper right quadrant. Note 1: Recheck STORING SWITCH GUIDES (2. 10) adjustment. PUSHLEVER LATCHLEVER CONTACT LEVER SLIDE CONTACT ECCENTRIC LEVER SHAFT EXTENSION CONTACT SCREWS (B) STORING SWITCH CONTACT (2) Requirement (1) Require t Min 0.010 inch equirement 4. clearance between contact slide and Blank combination selected, clutch contact lever extension (sensing pin tripped, and shaft rotated one revolu- contacts only). tion to stop position. ; To Check Min 0.015 inch---Max 0. 020 inch To Ghec . gap between each contact lever exten- Rotate shaft to strip pushlevers, but not sion and its contact screw. ; To Adjust To Adjust Refine Requirement (1). Rotate individual contact screw. Note 2: To gauge tape-out (6th) pin, rotate shaft until sensing pins are in uppermost position. Note 3: The above requirements are final except in locations where a teletypewriter test set is available. Page 27 SECTION 573-127-700TC 2.25 Pivoted Sensing Head SENSING PINS (B) TAPE DEFLECTOR Requirement The tape deflector vertical ears should pass freely between sensing pins 1 and 2 and 4 and 5 as pivoted sensing head is moved away from its locked position. PIVOTED To Adjust SENSING Position tape deflector with front pivot screw. HEAD TAPE DEFLECTOR (A) SENSING HEAD PIVOT SCREWS (1) Requirement Sensing yoke should be free of binds. To Adjust Position rear pivot screw for minimum endplay without binding. | (2) Requirement Sensing pins should move freely in top SENSING YOKE plate. \ To Adjust FRONT REAR Refine Requirement (1). PIVOT PIVOT SCREW SCREW DEFLECTOR BRACKET MOUNTING SCREWS (C) TAPE DEFLECTOR BRACKET Requirement Arms of deflector bracket should contact ears on tape deflector simultaneously with sensing yoke in fixed position. To Adjust Position deflector bracket with mounting TAPE DEFLECTOR screws loosened. EARS Page 28 ISS 1, SECTION 573-127-700TC FEED PAWL 2.26 Pivoted Sensing Head (continue