Manual / Guide · 1967
Critical adjustment charts and check lists; receiving orientation tests (80-point check test). 102 pp. **Second tag:** Teletype-Model-15, Restoring-a-Teletype
BELL SYSTEM PRACTICES SECTION 570-001-901MS Plant Series Issue C, July, 1967 M. S. T. & T. Co. TELETYPEWRITER SERVICE MANUAL CONTENTS INDEX GENERAL USE OF CRITICAL ADJUSTMENTS RECEIVING ORIENTATION AND SENDING DISTORTION TESTS MODEL 14 APPARATUS TYPING REPERFORATOR UNIT TRANSMITTER-DISTRIBUTOR MODELS 15 &19 APPARATUS TYPING UNIT KEYBOARD, PERFORATOR -TRANSMITTER MODELS 28 & 35 APPARATUS TYPING UNITS KEYBOARD, MODEL 28 TYPING AND NON-TYPING PERFORATOR TYPING REPERFORATOR TRANSMITTER -DISTRIBUTOR MODEL 33 APPARATUS MISCELLANEOUS Page 1 BELL SYSTEM PRACTICES Plant Series SECTION 570-001 -901MS Issue C. July, 1967 M. 5S. T. & T. Co. TELETYPEWRITER SERVICE MANUAL 1. GENERAL 1.01 This section is reissued to add descriptive information and tech- nical data for 33 Teletypewriter Sets. Since this is a general revision of the section, marginal arrows ordinarily used to indicate changes have been omitted. 1.02 These critical mechanical ad- justments are those that ex- perience has shown to contribute most to trouble-free mechanical operation of teletypewriter apparatus. These adjustments are usually associated with a group of other connected and related adjustments. The verification of the critical adjustment can be an indicator of the connected and related adjustments. 1.03 Experience has shown that tele- typewriter assemblies with the critical adjustments specified in this section meeting the requirements will be in acceptable operating condition for trouble-free service. Each servic- ing visit to a teletypewriter in the field should include the necessary checks to assure that the apparatus meets the critical adjustment standards. 1.04 The service benefits from maintaining these standards are: (a) Ona servicing visit, a quick check will disclose whether adjustments are required and the apparatus can easily be maintained at the acceptable trouble-free standard. (b) On a trouble visit, the repair- man is assured that the appara - tus has been meeting the adjustment standards. Disclosure of an adjustment out of limits usually results in quick analysis and pinpointing the mechanical de- fect. 1.05 This information is assembled from Bell System Practices and Teletype Corporation Bulletins now authorized for use. This Section does not replace authorized Bell System Practices in the field. It is intended to supplement them and provide tele- typewriter servicemen with a basic standard from which to work. 1.06 From time to time, the American Company may issue standard Bell System Practice change notices specifying revisions in teletypewriter adjustments already incorporated in Section 570-001-901MS. When this occurs, the revised requirements shall be considered as superseding the re- quirements in Section 570-001-901MS. The latter will eventually be brought into agreement with the change notes. 2. USE OF CRITICAL ADJUSTMENTS 2.01 This Section provides critical adjustments for teletypewriter assemblies for the following work forces: (a) For the Western Electric Company teletypewriter shop personnel in preparing rebuilt, reconditioned, and completely assembled teletypewriters where authorized by the Telephone Company. An exception is to be made in the case of the receiving and sending distortion require- ments specified in Section 570- 001-901MS. These requirements shall not apply to Western Page 2 SECTION 570-0901-90i1MS Electric Company cperations since test procedures presently in use ar? adequate. (b) For Telephone Company In- stallation personnel where teletypewriter assemblies are received from Western Electric Company shops where the critical adjustment program is not in ef- fect. In this case the installer will check and adjust where nec- essary to assure that the tele- typewriter assembly meets the critical adjustment standards. (c) For Telephone Company ser- vicing personnel charged with maintaining teletypewriter machines. The teletypewriter serviceman should check critical _ adjustments and adjust where necessary to keep the teletype- writer in a trouble-free condition. (d) For Telephone Company repair personnel in locating trouble and mechanical defects in the mechanical portion of the assembly. Checking of critical adjustments will result in a quick analysis and lo- cating of the machine defects caus - ing malfunctions. 2.02 The critical adjustment charts should be used as follows: (a) The critical adjustment charts applying to the teletypewriter assembly to be checked should be selected from the index of the General section. The adjustment charts are provided with large tabs appropriately designated. (b) In most cases the first sheet behind the tabs will be an illus- tration of the component being checked. The second sheet will be a block diagram check list. In checking the critical adjustments the order established in the block diagrams should be followed. Page 3 {cj} The reguirements for critical adjustments should be care- fully followed in checking the ad- justments. Complete details of checking the adjustment are con- tained on each adjustment chart. (d) When a critical adjustment does not meet the require- ments, the Bell System Practice describing the adjustment should be used in adjusting. Each chart has listed the appropriate Section numbers for making adjustments. 3. RECEIVING ORIENTATION AND ——_ SENDING DISTORTION TE — 3.01 This section prescribes tests made locally at test centers; at servicing centers; and tests made over lines, loops, or legs between test centers; and at teletypewriter stations. The testing method consists of: 1. Measuring the distortion of signals produced by the station transmitting apparatus. 2. Determining the tolerances of the station receiving appara- tus to distorted or undistorted signals. 3.02 Check Test Receiving - Receiving apparatus should receive at least two complete lines of undistorted signals (the quick brown fox, etc.) without errors, with a selector range of at least 80 points. If distorted sig- nals are available, and they are biased 20% both marking and spacing, the selector range should be approxi- mately 40 points depending on the co- efficient of the circuit. 3.03 Readjust Test Receiving - Make ‘ tests as prescribed in check test. Observe high and low selector range scale readings and set the range scale at optimum point. For example, the orientation range scale setting mid- way between the upper limit found with 20% marking bias and the lower limit found with 20% spacing bias would be the optimum point for the range scale setting for normal signals. 3.04 Check Test Sending - Require- ments as specified in Bell System Practice Section 570-006-500 should be applied whenever equipment has been serviced, reconditioned, repaired, or inspected--also when changes have been made that affect transmission in the settings or adjust- ments of the station equipment or the line or loop connecting circuits. When checking sending signals into a "local" or ''test'' condition, and measuring them with a 164 C-() telegraph SECTION 570-001 -901MS transmission measuring set, or equivalent, the maximum allowable distortion from a keyboard is 8% and from transmitter -distributors 5%. When sending to a test center, the maxi- mum allowable distortion will vary depending on the coefficient of the cir- cuit or the type of Data set used. This is determined by the test center. 3.05 Readjust Test Sending - With the teletypewriter conditioned to be in the "'test"’ or "local'’ mode and measuring signals with a 164 C-() or equivalent, the maximum allowable distortion from keyboards is 7% and from transmitter - distributors 4%. When sending to test centers, these readings shall be obtained from the testboardman. Page 4 SECTION 570-001-901 MS itt rT. mee allt’ Satie ° vin] Hii Wage © SW lft ae a’ MODEL I4 SENDING— RECEIVING TAPE PRINTER ( LESS COVER ) PAGE 5 SECTION 570-001-901ms 14 TYPE TYPING REPERFORATOR Page 6 14 REPERFORATOR CHECK TEST SELECTOR MECHANISM MAIN BAIL MAIN SHAFT RIBBON MECHANISM PUNCH & FEED SECTION 570-001-909 IMS Page 7 SECTION 570-001-901MS SELECTOR .003'’ TO .006’’ the selector arm should be kept in marking position I 004°" TO .006”’ i ‘| GREATER THAN 3 = THIS CLEARANCE QO © © | SOME CLEARANCE NOT MORE THAN .040’’ between each sword and either stop post .005’" TO .012”’ is 7 EQUAL CLEARANCE WITHIN .003”’ To Adjust: B. 8. P. 572-006-700 Page 8 SECT 001. SELECTOR RANGE FINDER ASSEMBLY ION 570-001-901MS MAGNET MARKING (SOME CLEARANCE, , NOT MORE THAN .006 AT LEAST 002" 1 TO t- 1/2 OZS.—60 AND 75 weu— 2-3/4 TO 3-1/4 O0ZS.—!I00 WPM MAGNET SPACING SOME CLEARANCE , NOT { 1 MORE THAN .004°" AT LEAST & BUT NOT MORE THAN) WIDTH OF STOP LEVER 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. The over- travel of the step 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. To Adjust: B.S.P. 572-006-700 Page 9 SECTION 570-001-901MS MAIN BAIL CODE BARS 010" TO 050" ——— PULL BAR ———-—_-)_, ey = MAIN BAIL c = @ ¢ _i_. Gio" TO.020° DRIVEN CLUTCH MEMBER DRIVING CLUTCH MEMBER MAIN SHAFT MAIN SHAFT CLUTCH SPRING \ 24 TO 30 OZS. (FOR 60 WPM) 32 TO 42 OZS. (FOR 75 WPM) (40 TO 64 02S. (FOR 100 WPM) TO SEPARATE CLUTCH TEETH \SG N ea SSNS O Ly OOSSC000 WA To Adjust: B. S. P. 572-105-700 Page 10 SECTION 570-001-901MS RIGHT AND LEFT RIBBON REVERSE LEFT O15" TO .040"-—_______-| WO CODE BAR BELL CRANKS With the code bars positioned for BLANK selection and the locking lever resting against the code bars, tN AT LEAST 010" O10" TO .050" ~ With the code bars positioned for LETTERS selection and the main bail cam roller on the high part of its cam. To Adjust: B.S. P. 572-105-700 Page 11 SECTION 570-001-90 IMS FEED PAWL ECCENTRIC 7 FEED ROLL DETENT a a _ ; © 5 FEEL PAWL ECCENTRIC FEED PAWL. FEED ROLL DETENT ECCENTRIC With the punch arm cam roller onthe low part of its cam, the feed pawl should rest in the bottom of the notch which is just below the horizontal center line of the feed roll. GAUGING TAPE Perforations in tape should be evenly spaced, 10 to the inch, with an allowable variation of + 0.007” in a 4”’ length. (a) To check, perforate a series of nine Blanks, and one LTRS combination seven or eight times, bend back the lids of all No. 3 code holes, place the tape on top of a TP95960 gauge. TAPE TENSION LEVER 14 TO 16 OZS. TAPE TENSION LEVER To Adjust; B.S. P. 572-105-700 Page 12 SECTION 570-001-901MS 14 TYPE TRANSMITTER DISTRIBUTOR Page 13 SECTION 570-001-901MS 14 TRANSMITER DISTRIBUTOR CHECK TEST MAIN SHAFT START STOP MAGNET TAPE SENSING MECHANISM DISTRIBUTOR & BRUSHES | TAPE FEED MECHANISM Page 14 SECTION 570-001-901MS MAIN SHAFT The trailing edge of the carbon brush should be on an oblique angle to the leading edge of the STOP segment. The trailing inside cor- ner of the carbon brush should be 1/32" to 1/16" from the leading edge of the STOP segment, The operating cam should be positioned so that the No. 5 Transmitter Con- tact Tongue leaves the lower (MARKING) contact screw when the distributor brush is on the STOP — \ With the play ia the operating lever taken up ina direction to make the clearance a maximum, this clearance should not exceed , 040". TAPE STOP MAGNET 28 TO 32 OZS. TO HOLD CAM FROM TURNING =. i 004" To O12" To Adjust: B. S. P. 572-103-700 Page 15 SECTION 570-001-901MS TAPE SENSING MECHANISM 6 TO 7 OZS. -.020" TO .025" AT LEAST .002" (WITH OPERATING LEVER ROLLER ON LOW PART OF CAM) DISTRIBUTOR BRUSHES == 2-/2T0 3-1/2 OZS. STOP SEGMENT LINE UP ENDS OF BRUSHES WITH THIS LINE To Adjust: B. S. P. 572-103-700 ~ Page 16 SECTION 570-001-901MS TAPE FEED MECHANISM EQUAL CLEARANCE: perenne PERFORATED TAPE TAPE FEED WHEEL PINS Ca) When the play of the tape onthe feed wheel is taken up toward the left, the tape pin farthest tothe right should just clear the right edgeof its associated code hole. When the operating-lever roller is on the highest part of its cam and the detent roller rests between two teeth on the feed-wheel ratchet, there should be come clearance, not over .010", between the face of a tooth on the ratchet wheel and the face of the feed pawl. With the operating-lever rolier on the low part of the operating cam and the detent roller resting in the notch between two teeth of the feed wheel ratchet, there should Le be .050" to .070" clearance between the face of VL Yi feed pawl and the face of the first tooth above e the horizontal center line of the feed-wheel K| a ratchet. The feed lever should bein contact with ; { )A 2 the blocking surface of the feed lever stop. = To Adjust: B.S. P. 572-103-700 Page 17 15 TYPE TELETVPEWRITER SECTION 570-001-901MS RIBBON LOCK—OUT BAR TYPE BAR CARRIAGE SEND.-REC.-BREAK KEY / hi THUMB SCREW 7 “COVER LOCATING STUD TERMINAL BLOCKS TOUBLE LAMP THUMB SCREW RECEPTACLE Page 18 (5 TYPING UNIT CHECK TEST SELECTOR CODE BAR & BELL CRANKS RIBBON REVERSE FUNCTION BAIL & PRINTING BAIL CARRIAGE RETURN MAIN SHAFT LINE FEED SECTION 570-001-990 IMS Page 19 SECTION 570-001-901MS SELECTOR RANGE FINDER ASSEMBLY MAGNET MARKING {SOME CLEARANCE, , [NOT MORE THAN .006 AT LEAST 002" tT bai ha E Yee TT a + 1 TO 1-1/2 OZS.—60 AND 75 wen —| 2-3/4 TO 3-1/4 O0ZS—100 WPM SOME CLEARANCE, NOT L MORE THAN .004" MAGNET SPACING wi I } AT LEAST % BUT NOT MORE THAN WIDTH OF STOP LEVER 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 bevond the step of the trip latch. The over- travel of the step 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 scalc. To Adjust: B.S.P. 572-006-700 Page 20 SECTION 570-001-901MS SELECTOR the selector arm should be kept in marking position fa 004" TO .006"” GREATER THAN J === THIS CLEARANCE QO © © : 17 TO 19 ozs. —| SOME CLEARANCE NOT MORE THAN .040°° between each sword and either stop post .005’" TO .012"" EQUAL CLEARANCE WITHIN .003°° To Adjust: Page 21 B. S. P. 572-006-700 SECTION 570-001-901MS CODE BARS AND CODE BAR BELL CRANKS Code bars should rest firmly against the marking and spacing stops when the vanes are in their respective marking and spacing positions. Make sure that the upper ends of the bell cranks do not engage the code bars deeply enough to bind. D #1 BELL CRANK #1 VANE -—__-_ / é OAS oJ 010" TO .050" ; f The pull bars should clear the code bars .010" oS to .050" when the main shaft is rotated until the YW » printing bail is in its extreme rear position. 4] vf Check this adjustment with the type bar carriage in both its extreme right and left posi- ~ “he, LH H | tions and with the play in the pull bars taken up LT? "ih 74} in a direction to make the clearancea minimum. SOME CLEARANCE, NOT MORE THAN .008 To Adjust: B.S.P. 572-202-700 Page 22 SECTION 570-001-901MS RIBBON REVERSE The left end of the ribon feed shaft should be flush with or extend not more than .015" over the inner end of the left vertical feed shaft bevel gear teeth, when the ribbon feed shaft is in its left position and the left vertical feed shaft bevel gear is held in engagement with the ribbon shaft gear. feed shaft is in its right position SOME END PLAY NOT MORE THAN .015”’ STSTEXO) A like condition should exist when the ribbon | on) wa AI? ‘|. —-F, a oes ee r e ’ 18 TO 26 OZS. TO stant} | ROLLER MOVING O'S’ TO .050"" fr E I BOTH LEFT AND RIGHT RIBBON REVERSE PAWLS To Adjust: B. S, P. 572-202-700 Page 23 SECTION 570-001-901MS cTIO 90IMS FUNCTION LEVER BAIL AND PRINTING BAIL 004"TO 015" With the SHIFT, LINE FEED, AND UNSHIFT function levers altemately selected and the main shaft rotated until the travel of the function lever bail is blocked by the selected func- tion lever, there should be .004’’ to .015”’ clearance between the rear edge of No. 1 vane and the bottom of a notch in the selected function lever. There should be .040" to .060" clearance be- tween the rear edge of the No. 1 vane and the ~~ front edges of the function levers, except the | universal function lever, when the main shaft is ‘O} rotated until the printing bail is in its rearmost io? s position and the No. 1 vane is held midway be- tween its marking and spacing positions. Coy .040" TO 060" T -*#) VANE WA END PLAY, NOT MORE THAN 004 To Adjust: B.S.P. 572-202-700 Page 24 SECTION 570-001-901MS CARRIAGE RETURN AND LEFT MARGIN SOME CLEARANCE, NOT MORE THAN 002’’ ON N Turn the left margin _— adjusting screw 1/6th turn in a direction to ~ eliminate this clearance and tighten the lock nut. _ v/ ne Las 4 — a .010’" to .020°" - MAIN SHAFT 14to 18 OZS. — 60 and 75 WPM [6to 22 OZS. —~ 100 WPM TO HOLD SLEEVE STATIONARY IMPORT -INT ~-- UNDER POWER 5 ee ate ~- SS To Adjust: B.S.P. 572—202—700 Page 25 SECTION 570-001-901MS LINE FEED There should be .015’’ to .030’’ clearance between the line feed check screw and each tooth on the detent ratchet, when the platen is rotated. MIN .O18” MAX .030” There should be come clearance, not more than .020’’, between the front face of the screw and the face of the tooth at the point of minimum clearance, when the check screw is held in the bottom of a notch on the ratchet. SOME CLEARANCE NOT MORE THAN 02 main shaft. Until the line feed push bar is being To Adjust: B.S.P. 572-202-700 Page 26 SOME CLEARANCE NOT MORE THAN .015” With the single-double line feed lever in the SINGLE line feed position, select the LINE FEED combination and rotate the stripped from the function bail blade the feed paw! is still in engagement with a ratchet tooth to such an extent that there is no clearance or not more than .002°. (5 KEYBOARD & PERFORATOR TRANSMITTER MAIN SHAFT TRIP MECHANISM & SIGNAL GEN. PUNCH CONTACTS & ANTI-CHATTER TAPE FEED PUNCH SELECTOR MECHANISM SECTION 570-001-901MS Page 27 SECTION 570.001. 001-90 IMs KEYBOARD AND PERFORATOR TRANSMITTER SOME END PLAY NOT MORE THAN 002°’ NOT MORE THAN .004”" AT LEAST .002’’ +o .010"" TO .020°" @ CLUTCH THROW-OUT LEVER l ! SOME CLEARANCE H H NOT MORE THAN .010°; ih Con _| | — 005" TO 018” @ ° 7 r) e .050’' TO .060"" La To Adjust: B.S.P. 572-203-700 B.S.P. 572-205-700 Page 28 SECTION 570-001-901MS PUNCH CONTACT ANTI-CHATTER LEVER BACKSTOP SCREW? Contact operating lever is held in its latched position vA and the armature is lifted off its left stop approximately 1/16” PN / “TL. SOME CLEARANCE NOT MORE THAN .004’’ Contact operating lever in its latched position the punch-magnet armature lever is resting firmly oo against its left (unoperated) stop MIN. 002°’ r = MAX.004”" CLEARANCE___- SOME CLEARANCE NOT MORE THAN .005"" rP (3 He SOME CLEARANCE NOT MORE THAN .00S"’ With magnet energized ae > “Ese kits Ve Contact points should close when all punch-selector fingers fy | just cover the full face of the punch pins. Uli Lf b ( Tc AT LEAST .015" H coO™M ™ CLEARANCE aN WO> i ADJUSTABLE LINK“ To Adjust: B. S. P. 572-205-700 Page 29 SECTION 570-001-901MS TAPE FEED MECHANISM FEED PAWL FEED PAWL GUIDE FEED ROLL SELECTOR FINGER ARMATURE LEVER FEED PAWL LEVER When the armature lever is firmly against its left stop, the tip of the tooth on the feed-pawl clears the tip of the teeth on the feed-roll by Min .005’’, Max .015’’. Feed-pawl should clear by Max .005’’ the teeth of the feed-roll while the armature is in its fully operated position. FEED PAWL GUIDE STAR WHEEL Perforations in tape should be evenly spaced, 10 to the inch with an allowable variation of ~ .007’’ in a 4’’ length. To check, perforate a series of nine Blank and one LTRS combinations seven or eight times, place the tape on top of a TP95960 gauge, then hold tape and gauge up to a light background and align a No. 3 code hole in the tape with the hole I-1/2 inches from the left end of the gauge. Gauge holes should be visible through all No. 3 code holes to the right of the point of alignment and the code hole above the large hole at the right end of the gauge should fall entirely within the circumference of the gauge hole. To Adjust: B. S. P. 572-205-700 Page 30 SECTION 570-001-901MS TAPE TENSION LEVER MEASURE TENSION MIN. 14 0ZS. MAX. 16 OZS. CLEARANCE Pulling perpendicularly to a plane passing through center of tension lever stud and the end of the lever. PUNCH SELECTOR FINGER ALIGNMENT PUNCH PIN CODE PUNCH SELECTOR FINGERS — a (> o_O] If f RANGE OF FINGER UL i] POSITION W————_—_~1 M, LINE FEED and LTRS key levers are depressed simultaneously — PUNCH FEED-PUNCH SELECTOR FINGER _i MIN. .024° C 2 EE queer To Adjust: B.S. P. 572-205-700 Page 3} SECTION 570-001-901MS 28 TYPE TYPING UNIT, FRONT VIEW 10d wWSVO Nuns *J0VidwVo LjavHsS NIVACS —“3ivild INO’ BON H3ZONIS 29NVH- ~_ BOvVIeHYD ONILININd LSNOSVW 8019397395 wOvese ONILS Vv ad NIL NI Be LINA IDIAMSS WIIe197973 HLIM SLISNNOD H3WAYH ONILNided H3A31 3SV3I3SH w3adVd xO8 3dAl Ta9HM GONVH N31 Id Page 32 28 TYPE TYPING IINIT, REAR VIEW SECTION 570-001-901MS LaVHS NIWW ¥V39 ONIAIWO ONVOBAR» WSINVHOIW ONID¥dS —<— WINIVI Se IVONIGS HIdVd Page 33 SECTION 570-001-901MS Stunt Box Rear View YaAAT NOILONNA aqvid UaddaLs uvad NOLLONNA WOOT HOLIMS TIMVd NOLLONNA YOLOANNOD wMuOd LATHS Page 34 28 & 35 TYPING UNIT CHECK TEST SELECTOR CODEBAR VERICAL POSITION HORIZONTAL POSITION TYPE CARRIAGE l MAIN SHAFT RESET & STRIPPER BAIL | SPACING LINE FEED CARRIAGE RETURN FIGURES, LETTERS, SHIFT SECTION 570-001-901MS Page 35 SECTION 570-001-90 IMS SELECTOR MECHANISM POLE PIECE a == i Nl ee aa =< \ aaMaTuRE ARMATURE EXTENSION — (2) REQUIREMENT SPACING LOCK LEVER ON HIGH PART OF CAM. ARMATURE IN CONTACT WITH POLE PIECE. SOME CLEARANCE BE- TWEEN UPPER SURFACE OF ARMATURE EXTENSION AND LOWER SURFACE OF SPACING LOCK LEVER WHEN LOCK LEVER IS HELD DOWNWARD. MAX. 0.003 INCH SELECTOR MAGNET BRACKET 1 (1) REQUIREMENT SPACING LOCK LEVER ON HIGH PART OF CAM. ARMATURE IN CONTACT WITH POLE PIECE. CLEARANCE BETWEEN.END OF ARMATURE EXTENSION AND SHOULDER ON SPACING LOCK LEVER. MIN. 0.020 INCH MAX. 0.035 INCH SPACING LOCK LEVER Type 35 ONLY SELECTOR ARMATURE DOWNSTOP SELECTOR CLUTCH REQUIREMENT —— MAGNET DE-ENERGIZED. LOCK LEVERS ON HIGH PART OF CAM, WITH ARMATURE RESTING AGAINST DOWNSTOP MIN. 0.025 INCH ~-- MAX, 0.030 INCH CLEARANCE BETWEEN END OF ARMATURE AND LEFT EDGE OF LEFT POLE PIECE. CLUTCH SHOE LEVER 4 DOWNSTOP BRACKET rT Mt at MOUNTING SCREW Nie ri if ! tt au. | toy 4 | , | Ke | ty 1 Te | POLE PIECE TI a 4 Ola —4 CLUTCH STOP ARM GAUGE ; SELECTOR CLUTCH STOP Am To Adjust: REQUIREMENT 35 Type ~ B. S. P. 574-220-700 RANGE SCALE SET AT 60. SELECTOR CLUTCH DISENGAGED. ARMATURE 28 Type - B.S. P. 573-115-700 IN MARKING POSITION. CLUTCH STOP ARM SHOULD ENGAGE CLUTCH SHOE LEVER BY APPROXIMATELY FULL THICKNESS OF SHOE LEVER. Page 36 TYPING UNIT, CODE BAR SHIFT MECHANISM SECTION 570-001-901MS REAR CODE BAR SHIFT LEVER 7 SHIFT BAR OUTER STEP TRANSFER LEVER ECCENTRIC REQUIREMENT PUSH LEVERS POSITIONED FOR MARK. SELECTOR CLUTCH DISENGAGED. CODE BAR SHIFT LEVER LINK IN UPPERMOST POSITION, CLEARANCE BETWEEN REAR CODE BAR SHIFT LEVER AND CODE BAR SHIFT BAR FARTHEST FROM REAR CODE BAR SHIFT LEVER SHIFT BAR INNER STEP CODE BAR SHIFT BAR MIN. 0.010 INCH MAX. 0.025 INCH FRONT CODE BAR CODE BAR WHEN PLAY OF SHIFT BAR IS SHIFT LEVER SHIFT BAR TAKEN UP FOR MAXIMUM CLEARANCE 28 TYPE a INTERMEDIATE ARM BACKSTOP BRACKET SHIFT BAR INNER STEP REQUIREMENT (TOP View) PUSH LEVERS SPACING ALL CODE BAR SHIFT BARS TO THE RIGHT. SELECTOR CLUTCH DISENGAGED. CODE BAR SHIFT LEVER LINK IN LOWERMOST POSITION. CLEARANCE BETWEEN FRONT CODE BAR SHIFT LEVER AND INNER STEP OF CODE BAR SHIFT h BAR FARTHEST FROM FRONT CODE « TRANSFER LEVER BAR SHIFT LEVER. f ae MIN. 0.010 INCH ” A MAX. 0.025 INCH WHEN PLAY IN PARTS IS TAKEN UP FOR MAXIMUM CLEARANCE. aH Eng FE 7 (FRONT VIEW) UL i A U ~ [ 35 TYPE ECCENTRIC BUSHING NOTE ONE OR MORE CODEBAR SHIFT nD BARS CAN TOUGH CODE BAR ) TRANSFER LEVER SHIFT LEVERS. TRANSFER LEVERS To Adjust: 35 Type - B.S. P. 574-220-700 28 Type - B. S. P. 573-115-700 r yy Cai 2 Page 37 SECTION 570-001-901MS TYPING UNIT, CODE BAR SHIFT MECHANISM p— CODE BAR SHIFT LEVER LINK BRACKET REQUIREMENT MOTION OF FRONT AND REAR CODE BAR SHIFT LEVERS SHOULD BE EQUALIZED WITH RESPECT TO CODE BAR TRAVEL. TO CHECK (FRONT) SELECT BLANK COMBINATION AND ROTATE MAINSHAFT UNTIL CODE BAR SHIFT LEVER LINK REACHES HIGHEST TRAVEL. TAKE UP PLAY FOR MAXIMUM CLEARANCE. CLEARANCE BETWEEN FRONT CODE BAR SHIFT LEVER AND SHOULDER ON NEAREST CODE BAR SHIFT BAR MIN. 0.002 INCH MAX. 0.025 INCH TO CHECK (REAR) SELECT LETTERS COMBINATION, CHECK CLEARANCE BETWEEN REAR CODE BAR SHIFT LEVER AND SHOULDER ON NEAREST CODE BAR SHIFT BAR IN SAME WAY, MIN. 0.002 INCH MAX, 0.025 INCH To Adjust ae R Cope ear stirt—_ © 7 ea —— REAR CODE BAR SHIFT LEVE BAR INNER STEP —_- y-—— CODE BAR SHIFT BAR (MARKING) — CODE BAR SHIFT BAR (SPACING) FRONT CODE BAR SHIFT LEVER ~~ | (TOP VIEW) Vf C1 cA } - 7 ( CODE BAR CODE BAR SHIFT LEVER SHIFT LEVER CODE BAR SHIFT LEVER LINK of Ff CODE BAR SHIFT LEVER LINK BRACKET Om / | CODE BAR SHIFT LEVER | . Yy LINK U LA (FRONT VIEW) llr it EARLIER DESIGN Type 28 — 573-115-700 Type 35 - 574-220-700 Page 38 TYPING UNIT, CODE BAR SHIFT MECHANISM SECTION 570-001-901MS REAR CODE BAR SHIFT LEVER 7 SHIFT BAR OUTER STEP TRANSFER LEVER ECCENTRIC REQUIREMENT PUSH LEVERS POSITIONED FOR MARK. SELECTOR CLUTCH DISENGAGED. CODE BAR SHIFT LEVER LINK IN UPPERMOST POSITION, CLEARANCE BETWEEN REAR CODE BAR SHIFT LEVER AND CODE BAR SHIFT BAR FARTHEST FROM REAR CODE BAR SHIFT LEVER SHIFT BAR INNER STEP CODE BAR SHIFT BAR MIN. 0.010 INCH MAX. 0.025 INCH FRONT CODE BAR CODE ea WHEN PLAY OF SHIFT BAR IS SHIFT LEVER SHIPT BAR TAKEN UP FOR MAXIMUM CLEARANCE | INTERMEDIATE ARM BACKSTOP BRACKET SHIFT BAR INNER STEP REQUIREMENT PUSH LEVERS SPACING ALL CODE BAR SHIFT BARS TO THE RIGHT. SELECTOR CLUTCH DISENGAGED. CODE BAR SHIFT LEVER LINK IN LOWERMOST POSITION. CLEARANCE BETWEEN FRONT CODE BAR SHIFT LEVER AND INNER STEP OF CODE BAR SHIFT BAR FARTHEST FROM FRONT CODE 4 TRANSFER LEVER BAR SHIFT LEVER. =. MIN. 0.010 INCH MAX. 0.025 INCH WHEN PLAY IN PARTS IS TAKEN UP FOR MAXIMUM CLEARANCE. 28 TYPE (TOP VIEW) ra aH ~ tng —_¥ (FRONT VIEW) 35 TYPE ECCENTRIC BUSHING NOTE ONE OR MORE CODEBAR SHIFT i h BARS CAN TOUGH CODE BAR ) TRANSFER LEVER SHIFT LEVERS. Ens Fi TRANSFER LEVERS To Adjust: 35 Type - B. S. P. 574-220-700 28 Type — B. S. P. 573~115-700 Page 37 SECTION 570-001-901MS TYPING UNIT, CODE BAR SHIFT MECHANISM -— CODE BAR SHIFT LEVER LINK BRACKET REQUIREMENT WITH RESPECT TO CODE BAR TRAVEL. TO CHECK (FRONT) MIN. 0.002 INCH MAX. 0.025 INCH TO CHECK (REAR) MIN. 0.002 INCH MAX, 0.025 INCH MOTION OF FRONT AND REAR CODE BAR SHIFT LEVERS SHOULD BE EQUALIZED SELECT BLANK COMBINATION AND ROTATE MAINSHAFT UNTIL CODE BAR SHIFT LEVER LINK REACHES HIGHEST TRAVEL. TAKE UP PLAY FOR MAXIMUM CLEARANCE. CLEARANCE BETWEEN FRONT CODE BAR SHIFT LEVER AND SHOULDER ON NEAREST CODE BAR SHIFT BAR SELECT LETTERS COMBINATION. CHECK CLEARANCE BETWEEN REAR CODE BAR SHIFT LEVER AND SHOULDER ON NEAREST CODE BAR SHIFT BAR IN SAME WAY, BAR INNER STEP FRONT CODE BAR SHIFT LEVER ~~ | i CODE BAR SHIFT ae REAR CODE BAR SHIFT LEVER 7 CODE BAR SHIFT BAR (MARKING) CODE BAR SHIFT BAR (SPACING) (TOP VIEW) - oO a Cl 7 ; CODE BAR le SHIFT LEVER CODE BAR SHIFT LEVER CODE BAR SHIFT LEVER LINK an x ap IQ es —| ~ { ° a = x | CODE BAR SHIFT LEVER ~ | @ LINK BRACKET 4 CODE BAR SHIFT LEVER y YY LINK I EARLIER DESIGN LY (FRONT VIEW) To Adjust Type 28 — 573-115-700 Type 35 — 574-220-700 Page 38 TYPING UNIT, CODE BAR SHIFT MECHANISM SECTION 570-001-901MS ran (7 3) —————————- CODE BAR SHIFT LEVER ROLLER CODE BAR SHIFT LEVER DRIVE ARM REQUIREMENT CODE BAR SHIFT LEVER LINK IN THE UPPERMOST POSITION. . THERE SHOULD BE SOME CLEARANCE BETWEEN THE TOP OF THE ROLLERS AND THE TOP OF THE CAM SLOTS IN THE CODE BAR SHIFT LEVERS MAX. 0.025 INCH ON THE CLOSEST LEVER CODE BAR SHIFT LEVER LINK BRACKET ——> ROCKER SHAFT BRACKET ECCENTRIC STUD REQUIREMENT TYPE BOX CLUTCH DISENGAGED. PLAY IN LOCKING ARM TAKEN TOWARDS FRONT. GAP BETWEEN LOWER SIDE OF LOCK LEVER ROLLER AND TOP EDGE OF SHOULDER ON HORIZONTAL POSITIONING LOCK LEVER. MIN. 0.055 INCH MAX. 0.090 INCH LOCK LEVER ROLLER mi 7 FRONT VIEW To Adjust: Type 28 — 573-115-700 Type 35 — 574-220-700 Page 39 SECTION 570-001-901MS TYPING UNIT, VERTICAL POSITIONING MECHANISM RIGHT SIDE (LEN T RIGHT VERTICAL POSITIONING LEVER ECCENTRIC STUD REQUIRE MENT TYPE BOX CLUTCH DISENGAGED, COMMON CODE BAR IN SPACING POSITION. PLAY TAKEN UP BY PRESSING DOWNWARD ON COMMON CODE BAR AT GUIDE BLOCK. MIN 0.030 INCH MAX 0.050 INCH CLEARANCE BETWEEN THE TOE OF VERTICAL POSITIONING LEVER AND THE BOTTOM OF THE COMMON CODE BAR WHEN PLAY IS TAKEN UP TO MAKE CLEARANCE A MINIMUM. COMMON CODE BAR 1 VERTICAL POSITIONING LEVER TOE TYPING UNIT, VERTICAL POSITIONING MECHANISM, LEFT SIDE To Adjust: Type 28 - 573-115-700 Type 35 -— 574-220-700 Page 40 COMMON CODE BAR UUNUUT [~~ VERTICAL POSITIONING LEVER TOE LEFT VERTICAL POSITIONING REQUIREMENT RIGHT AND LEFT VERTICAL POSITIONING LEVERS SHOULD BUCKLE EQUALLY WITHIN 0.006 INCH TO CHECK COMMON CODE BAR IN SPACING POSITION. TRIP TYPE BOX CLUTCH. ROTATE MAIN SHAFT UNTIL RIGHT VERTICAL POSITIONING LEVER TOE TOUCHES COMMON CODE BAR, BUCKLING ITS LOWER LINK 0.008 INCH (MAXIMUM) LEFT VERTICAL POSITIONING LEVER TOE SHOULD TOUCH COMMON CODE BAR. BUCKLING ITS LOWER LINK EQUALLY WITHIN 0 006 INCH TYPING UNIT, VERTICAL POSITIONING MECHANISM, LEFT SIDE VIEW SECTION 570-001-901MS BOTH LEFT AND RIGHT SIDE (2) REQUIREMENT WITH PLAY TAKEN UP BY PULLING PE VERTICAL POSITIONING LOCK LEVER UPWARD WITH 8 OZS. TENSION ON TY (1) REQUIREMENT BOX CARRIAGE TRACK, VERTICAL ALL MARKING SET UP ON CODE BARS. SURFACES MIN. IN CONTACT WITH MAIN SIDE OPERATING LEVERS AT MAX. 0.012 INCH AWAY FROM EACH UPPER END OF TRAVEL. UPPER OTHER NOTCH OF VERTICAL POSITIONING LOCK LEVER FULLY ENGAGED (MANUALLY IF NECESSARY) WITH VERTICAL SLIDE PROJECTION. LEFT VERICAL SLIDE PROJECTION UPPER SURFACE OF FOLLOWER ARM REAR EXTENSION SHOULD BE MIN, IN CONTACT WITH MAX. 0.004 INCH AWAY FROM INNER EXTENSION OF MAIN SIDE LEVER LEFT POSITIONING LOCK LEVER ——————> INNER EXTENSION LEFT MAIN SIDE LEVER LEFT FOLLOWER ARM REAR EXTENSION To Adjust: Type 28 — 573-115-700 Type 35-574—220-700 Page 41 SECTION 570-001-901MS TYPING UNIT, HORIZONTAL MOTION REVERSING MECHANISM FRONT VIEW MARKING p~ P REVERSING a ———_— SPACING DETENT DETENT LEVER REVERSING SLIDE ADJUSTING STUD REQUIREMENT TYPE BOX CLUTCH DISENGAGED. WITH NO. 3 CODE BAR IN SPACING POSITION (RIGHT), THE REVERSING SLIDE DETENT ROLLERS SHOULD BE FULLY SEATED IN THE RIGHT-HAND NOTCHES OF THE DETENT LEVER. WITH NO. 3 CODE BAR IN MARKING POSITION (LEFT), THE REVERSING SLIDE DETENT ROLLERS SHOULD BE FULLY SEATED IN THE LEFT-HAND NOTCHES OF THE DETENT LEVER. REVERSING SLIDE se é ye AS REVERSING SLIDE BRACKETS REQUIREMENT TYPE BOX CLUTCH, CODE BAR CLUTCH, AND FUNCTION CLUTCH DISENGAGED. REVERSING SLIDE MOVED TO RIGHT AND LEFT THROUGH ITS FULL TRAVEL RIGHT MOTION SHOULD BUCKLE LEFT HORIZONTAL POSITION- ING DRIVE LINKAGE AND LEFT MOTION SHOULD BUCKLE RIGHT HORIZONTAL POSITIONING DRIVE LINKAGE. THE AMOUNT OF BUCKLING IN EACH CASE SHOULD BE MEASURED AT POINT OF MAXIMUM CLEARANCE. MIN. 0.030 INCH 28 Type | 0.045 INCH RIGHT HORIZONTAL POSITIONING DRIVE 35 Type MIN. 0.030 INCH LINKAGE MAX. 0.050 INCH To Adjust: Type 28 ~ 573-115-700 Type 35 — 574~220-700 Page 42 SECTION 570.001-901MS TYPING UNIT, HORIZONTAL POSITIONING DRIVE MECHANISM, FRONT VIEW HORIZONTAL POSITIONING DRIVE LINKAGE REQUIREMENT TYPE BOX CLUTCH DISENGAGED. CODE BARS IN SPACING (RIGHT). CLEARANCE BETWEEN EACH SIDE OF CENTER HORIZONTAL STOP SLIDE AND DECELERATING SLIDES, ON SIDE WHERE KNEE LINK IS STRAIGHT SHOULD BE EQUAL (WITHIN 0.008 INCH) MIN. 0.015 INCH} 28 Tyce MIN. 0.090 INCH 35 T MAX. 0.040 INCH $ * YP MAX. 0.110 INCH S* ype REVERSING SLIDE HORIZONTAL STOP SLIDES \ LERATING SLIDE CHECK THE LINKAGE FOR FREENESS THROUGHOUT A COMPLETE CYCLE. THE TYPE BOX CLUTCH DISK SHOULD HAVE SOME MOVEMENT IN THE NOR- MAL DIRECTION OF ROTATION IN THE STOP POSITION. “ MIN. 0.030 INCH | C.R. LATCH BAIL POST CARRIAGE DRAW-WIRE ROPE REQUIREMENT CLEARANCE BETWEEN LOWER DRAW WIRE ROPE AND CARRIAGE RETURN LATCH BAIL POST SHOULD BE AT LEAST 0.006 INCH. WITH THE HORIZONTAL POSITIONING MECHANISM IN ITS LOWEST POSITION, CLEARANCE BETWEEN THE LOWER DRAW WIRE ROPE AND THE LEFT HORIZONTAL POSITIONING DRIVE LINKAGE SHOULD BE MIN. 0.030 INCH. To Adjust: Type 28 — 573-115-700 Type 35 — 574-220-700 Page 43 SECTION 570-001-901MS HORIZONTAL POSITIONING DRIVE MECHANISM 35 TYPE ONLY oS. SHIFT BREAKER SLIDE SHIFT BREAKER —T SLIDE SHIFT ROCKER BAR SHIFT ROCKER BAR BEARING BRACKET CODE BAR AND TYPE BOX CLUTCHES DISENGAGED. CLEARANCE BETWEEN SHIFT ROCKER BAR AND LOWER END OF LEFT SHIFT BREAKER SLIDE MIN. 0.050 INCH MAX. 0.070 INCH CHECK RIGHT SIDE IN SIMILAR MANNER. TO CHECK RAISE RIGHT END OF SHIFT ROCKER BAR TO UPPERMOST POSITION, HOLDING RIGHT SHIFT BREAKER SLIDE AGAINST STOP. MAKE SURE LEFT SHIFT LINK IS STRAIGHT, AND HOLD LEFT SHIFT BREAKER SLIDE AGAINST SHIFT LINK PAD. SHIFT ROCKER LEVER | REQUIREMENT WITH ALTERNATE LEFT AND RIGHT SHIFT SELECTION MADE, AND BAIL-ARM ASSEMBLY ROLLER ON HIGH PART OF CAM, CLEARANCE BETWEEN RAISED END OF SHIFT ROCKER BAR AND LOWER END OF ASSOCIATED SHIFT BREAKER SLIDE, WHEN SLIDE IS HELD AGAINST STOP, SHOULD BE EQUAL WITHIN 0.010 INCH WITH CLEARANCE ON OPPOSITE SIDE WHEN THAT SIDE IS SELECTED. SHIFT BREAKER SLIDE nn ne STOP Oo POST eee = (FRONT VIEW) SHIFT ROCKER BAR SHIFT ROCKER LEVER DRIVE ARM SHIFT DRIVE PAWL OPERATING BAIL REQUIREMENT WITH SHIFT DRIVE PAWL OPERATING BAIL CAM FOLLOWER ON HIGH DWELL OF CAM, CLEARANCE BETWEEN SHIFT ROCKER BAR AND LOWER END OF RAISED SHIFT BREAKER SLIDE MIN. SOME MAX. 0,015 INCH WHEN SLIDE 1S HELD AGAINST STOP. To Adjust: Type 35 - B. S. P. 574-220-700 Page 44 SECTION 570-001-901MS TYPING UNIT, PRINTING CARRIAGE A Cn arog, LTRS. FIGS. UUUUCUTT 00 DUUC OO PPP Cn D PRINTING CARRIAGE POSITION REQUIREMENT TYPE BOX IN LETTERS POSITION. M TYPE PALLET SELECTED. TYPE BOX IN PRINTING POSITION M TYPE PALLET SHOULD BE APPROXIMATELY IN CENTER OF PRINTING HAMMER WHEN HAMMER IS JUST TOUCHING M TYPE PALLET. TAKE UP PLAY IN TYPE BOX CARRIAGE IN EACH DIRECTION AND SET HAMMER IN CENTER OF PLAY. 28 TYPE ONLY 35 TYPE ONLY PRINTING HAMMER STOP BRACKET REQUIREMENT PRINTING HAMMER IN UPPER LEFT TYPE BOX POSITION, PRINTING TRACK IN ITS MAXI- MUM DOWNWARD POSITION. PRINTING HAMMER STOP BRACKET HELD TOWARD THE PLATEN WITH 8 OZS. OF PRESSURE. CLEAR- ANCE BETWEEN PRINTING HAMMER AND UPPER LEFT TYPE PALLET MIN. 0.005 INCH MAX. 0.035 INCH | Z PRINTING HAMMER PRINTING CARRIAGE POSITION 35 TYPE ONLY REQUIREMENT TYPE BOX IN LTRS. POSITION AND PRINTING CARRIAGE AT APPROXIMATE MID-POINT OF TRACK. SET UP COM- BINATION TO POSITION PRINT HAMMER IN UPPER LEFT CORNER OF TYPE BOX. ROTATE PRINTER SHAFT SO TYPE BOX IS IN PRINTING POSITION. PROPER TYPE PALLET SHOULD BE APPROXIMATELY IN CENTER OF PRINTING HAMMER AND JUST TOUCHING TYPE PALLET. CHECK AT BOTH ENDS OF PLATEN. 28 TYPE ONLY PRINTING HAMMER STOP BRACKET REQUIREMENT TYPE BOX IN POSITION TO PRINT M PRINTING TRACK IN ITS MAXIMUM DOWNWARD POSITION. PRINTING HAMMER STOP BRACKET HELD TOWARD THE PLATEN WITH 8 OZS. OF PRESSURE. CLEARANCE BETWEEN PRINTING HAMMER AND M TYPE PALLET MIN. 0.005 INCH MAX. 0.035 INCH CHECK AT BOTH ENDS OF PLATEN. LATCHING BAIL LATCH SECONDARY PRINTING ARM EXTENSION ' staan PRINTING HAMMER BAIL t | I | | PRINTING HAMMER OPERATING BAIL OPERATING BAIL STOP (TOP VIEW) 8 OZS. PRESSURE PRINTING ARM 4 REQUIREMENT 28 & 35 (FRONT VIEW) To Adjust: 28 Type - B. S. P. 573-115-700 35 Type — B. S. P. 574-220-700 PRINTING TRACK IN MAXIMUM DOWNWARD POSITION. PRINTING HAMMER OPERATING BAIL AGAINST ITS STOP. SOME CLEARANCE BETWEEN SECONDARY PRINTING ARM AND FORWARD EXTENSION OF HAMMER OPERATING BAIL. MAX. 0.015 INCH WHEN PRINTING ARM SLIDE IS HELD DOWNWARD OVER EACH PRINTING TRACK MOUNTING SCREW FOR MAXIMUM CLEARANCE. REQUIREMENT PRINTING TRACK IN UPPERMOST POSITION. LATCHING EXTENSION OF PRINTING HAMMER OPERATING BAIL SHOULD OVERTRAVEL LATCHING SURFACE OF OPERATING BAIL LATCH BY MIN. 0.006 INCH CHECK RIGHT AND LEFT POSITIONS Page 45 Ne SECTION 570-001-901MS TYPING UNIT, PRINTING MECHANISM PRINTING TRACK REQUIREMENT PRINTING TRACK IN ITS EXTREME DOWNWARD POSITION. BLANK SELECTION PRINTING HAMMER OPERATING BAIL LATCHING EXTENSION HELD WITH LEFT FACE IN LINE WITH THE LATCH SHOULDER, PRINTING ARM SLIDE POSITIONED ALTERNATELY OVER EACH TRACK MOUNTING SCREW. PRINTING BAIL RESET EACH TIME. CLEARANCE BETWEEN LATCHING EXTENSION AND OPERATING BAIL LATCH SHOULD BE MIN. 0.015 INCH MAX. 0.040 INCH PRINTING HAMMER OPERATING BAIL OPERATING BAIL LATCH PRINTING HAMMER BAIL PRINTING ARM PRINTING TRACK \. f . To Adjust: Type 28 - 573-115-700 Type 35 - 574-220-700 amie ontad Pat Page 46 SECTION 570-001-901MS TYPING UNIT, CARRIAGE RETURN MECHANISM LEFT MARGIN (1) REQUIREMENT (72 CHARACTER LINE ) TYPE BOX CLUTCH DISENGAGED SPACING DRUM IN RETURNED POSITION TYPE BOX SHIFTED — TO LETTERS POSITION. CLEARANCE BETWEEN LEFT EDGE OF PLATEN AND anon ,_oannannaasas LETTERS PRINT INDICATOR. Laas Figs. MIN. 15 !6 INCH MAX. i-1/16 INCH TY TUT vu (2) REQUIREMENT SPACING CLUTCH DISENGAGED. FRONT SPACING FEED PAWL FARTHEST ADVANCED. SPACING DRUM FULLY RETURNED. PLAY IN SPACING SHAFT GEAR TAKEN UP CLOCKWISE. CLEARANCE BETWEEN PAWL AND SHOULDER OF RATCHET WHEEL TOOTH IMMEDIATELY AHEAD MIN. 0.002 INCH MAX. 0.015 INCH (3) REQUIREMENT REAR PAWL, WHEN FARTHEST ADVANCED. SHOULD REST AT BOTTOM OF INDENTATION BETWEEN RATCHET WHEEL TEETH. SPACING CUT-OUT TRANSFER BAIL TYPING UNIT, SPACE SUPPRESSION V4 : x X @ 5 } Ay RIGHT MARGIN zo S REQUIREMENT eC ) TYPE BOX CLUTCH DISENGAGED. CARRIAGE IN POSITION TO PRINT CHARACTER ON WHICH Neceenmse™ SPACING CUTOUT IS TO OCCUR. FRONT FEED PAWL FARTHEST ADVANCED. SPACING CUTOUT TRANSFER BAIL HELD IN ITS UPPERMOST POSITION. ON UNITS HAVING TWO PIECE SPACING CUTOUT BAIL PUSH THE CUTOUT BAIL TOWARDS REAR OF UNIT THROUGH HOLE IN FRONT PLATE. CLEAR- ANCE BETWEEN EXTENSION ON SPACE SUPPRES SION RING AND TRANSFER BAIL MIN. 0.006 INCH — —— MAX. 0.025 INCH SPACE SUPPRESSION RING SPACING CUTOUT TRANSFER BAIL SPRING To Adjust: Type 28 - B. S. P. 573-115-700 Type 35 — B. S. P. 574-220-700 Page 47 SECTION 570-001-901MS TYPING UNIT, CARRIAGE RETURN MECHANISM, FRONT VIEW p= CARRIAGE RETURN LATCH BAIL - REQUIREMENT CARRIAGE FULLY RETURNED PLAY IN CARRIAGE RETURN BAIL TAKEN UP TO RIGHT BY HOLDING RIGHT SIDE OF BAIL AGAINST ITS RETAINER. CLEARANCE BETWEEN CARRIAGE RETURN LATCH BAIL AND CARRIAGE RETURN LEVER. MIN. 0.004 INCH MAX. 0.040 INCH CARRIAGE RETURN Lever CARRIAGE RETURN LATCH BAIL To Adjust: Type 28 — B. S. P. - 573-115-700 Type 35 - B.S. P. 574-220-700 Page 48 SECTION 570-001-90 1MS TYPING UNIT, DASHPOT DASHPOT VENT SCREW DASHPOT { CARRIAGE RETURN LEVER TYPING UNIT, CARRIAGE RETURN REQUIREMENT (UNITS EQUIPPED WITH ONE— STOP FUNCTION CLUTCH) CARRIAGE RETURN FUNCTION SET UP ON ON SELECTOR. MAIN SHAFT ROTATED UNTIL FUNCTION CLUTCH STOP LUG IS TOWARD BOTTOM OF UNIT. CARRIAGE RETURN FUNCTION PAWL HOOKED OVER ITS FUNCTION BAR. SPACING DRUM HELD SO THAT CARRIAGE RETURN LATCH BAIL IS LATCHED. CLEARANCE BETWEEN LATCH BAIL AND CARRIAGE RETURN LEVER. MIN. 0.006 INCH — — — MAX. 0.035 INCH DASHPOT VENT SCREW REQUIREMENT T