Blueprints · 1954
SXS Parts Identification Master Drawings (MD)
Exploded master drawings with part numbers for Strowger switch and relay components; essential for repair and ordering parts.
Blueprints · 1954
Exploded master drawings with part numbers for Strowger switch and relay components; essential for repair and ordering parts.
MD DRAWINGS TCI Library: https://www.telephonecollectors.info/ HOW TO OROER REPLACEMENT PA.RTS F"OR RE:LAYS WHEN ORDERINO PARTS,SPECIFV P.&.RT NUMBER AND NAME. THE INDIVIDUAL P1'RT NUMBERS OF SPRINGS AHO COMPONENi PAR'TS THA.i GO TO BUILD UP SPRING COMBINA'TIONS ARE NOT SHOWN BEC~USE MORE SA'TISFACTORY RESULTS ARE 08T"'NEO WHEN SUCH COMBINATIONS ARE FACTORY ASSEMBLED WITH SPECl.&.LLY OES\GNED SQUEEZING FIX.TURES. THEREFORE, WHEN ONE O'R MORE SPRINGS ARE WANTED F'OR REPLACEMENTS ON A RELAY, SPECIFY THE REL~Y NUMBER OMITTING THE COIL SUFF'I)( AND ADDING SUF'FT~ "X". FOR EXAMPLE ; WHEN SPRING REPLACEMENTS ARE WANTED ON A RELAY R-2437-A\, ORDER R-2437-X. 'THE COMPLEiE SPRING COMBINATION PROPERLY MOUNTED ON THE HEEL PIECE WILL THEN BE FORWARDED. SHOULD A COIL BE REQUIRED, SPECIFY THE PART NUMBER STAMPED ON THE SPOOL HEAD AT ,HE ARMA"TURE ENO OF COIL,AS SHOWN IN PICTURE. SHOULD iHE NUMBER 8£ OBLliERATED, SPECIFY COIL FOR RELAY AND LI Si THE PROPER RELAY NUMBER COMPLETE. EXAMPLE; COIL FOR RELAY R-2437-A.1. IF AN ARMA.TURE. IS REQUIREO,SPECIF'Y Nt-.ME OF' PART FOR RELAY ANO LIST THE PROPER RELAY NUMBER COMPLEiE. EX!).MPLE; ARM!).TURE FOR R.-2437-At. 8-32)(. ~~ FIL. 1,-\.1.MS. COIL MT(;e D-75322-A BUSH IN~ U<;EO 0-3<o90-A ~U I OE POST (RI~ H"TJ D-3<.91 -A ~UIDE POST (LEFT) ONLY ON 4 TERM COIL D-7Co7O1-C SCQEW D-17378-C CLAMP WASHER COMPLETE RLV. PC. NO. ~--+-STAMPED MER.E (UNDERSIDE OF ME.EL PC,) RESIDUAL SCfi?.EV\I NUT ARMATURE BUSHINC:f CO IL. NO STAMPED HEst I! ARMATURE RELAY ASSEMBLY HORIZONTAL TYPE AUTOMATIC ELEC TRIC COMP~NY CHICAGO, u . s. A. A.W.B. DR.A.AW. CHI(, TCI Library: https://www.telephonecollectors.info/ MD-81 HOW TO ORDER REPLACEMENT PARTS FOR RELAYS WHEN ORDERING PARTS, SPECIF"Y PART NUMBER ,\.ND NAME. THE INDIVIDUAL PART NUMBERS OF" SPRINGS AND COMPONENT P,\.RTS THAT GO TO SUILO UP SPR\NG COII.AB\NAT\ONS ARE NOT IS~:3 - - - - - 1 SHOWN BECAUSE MORE SATISFACTORY RESULTS ARE OB'TAINED WHEN SUCH COMBINATIONS ARE F",\.CTORY ASSEMBLED WITH SPECIALLY DESIGNED SQUEEZING FIXTURES. THEREFORE, WMEN ONE OR MORE SPRINGS ARE WAN'TEO FOR REPLACEMENTS ON A RELAY, SPECIFY THE RELJ..Y NUMBER OMITTING THE COIL SUF'FTX. AND ADDING SUFFl1' "><.': F'OR. EXAMPLE; WHEN SPRING REPLACEMENTS A.RE WANTED ON A RELAY R-2437-At, ORDER R- 2437- X. THE COMPLEiE SPRING COMBINATION PROPERLY MOUNTED ON THE HEEL PIECE WILL THEN BE t='ORWA.RDED. SHOULD A COIL S£ REQUIRED, SPECIFY THE PART NUMBER S,AMPEO ON THE SPOOL HEAD A'T THE ARMATURE ENt> OF COIL, A.s SHOWN IN PIC'TURE. SHOULD THE NUMBER BE ()BLITERJ..iED, SPECIF'Y COIL FOR RELAY AND LIST THE PROPER RELA.Y NUMBER COMPLETE. EX,\.MPLE; COIL FOR REL,\.~ R-2437-M. IF AN ARMATURE IS REQUIRED, SPEC\f'Y NA.ME OF PART J:"OR RELAY ANO LIST THE PROPER RELAY NUMBER COMPLETE. EXAMPLE; ARM~TURE FOR R-2437-A.1. COMPLETE RLY. PC. NO, STAMPED HERE (UNDERSIDE OF MEEL PC.) 8 - ~2 ,.. ;,~ FIL H I M 5CR COIL MT4 0-'3c;90·A 4UID( P05T D·75322-A Cll5HIMG U5fD ONLY OM 4 TfRH. COIL 0-7609&-ARfSIOUAL Al?MATUllE S.USH I NG 5'C.Rl'w D · 772Hl- NUT COIL NO. 5TAMP[O ARWIATURE ttfM. t>-7~701 ·C SCRJ:W o, 11378-C CLAW1P 'WAStt[R RELAY ASSEMBLY HORIZONTAL TYPE I TO I RATIO AUTOMATIC ELECTRIC COMPANY . CHICAGO, U.S.A. A"'• C,R.E.H. CMK.P. .B. f• ...,_ .. , .__...________--4~--....,----1 == TCI Library: https://www.telephonecollectors.info/ MD-8~ 3-28-.SO ISSUE.' 2 2-11-53 RETRACED . OLD TRC~ w -~ N . 12- 13- 56 CH~EO eu NGSTO SLctNING. F.x.w.UTJK 1ssue:4 HOW TO ORDfR REPLACEMENT PAGiS FOR RELAYS WHEN ORDERING PARTS SPECIFY PART NUMBER AND NAME. THE INOIVIDUAl PART NUMBERS OF SPRINGS AND COMPONENT PARTS THAT GO TO BUILD UP SPRING COMBINATIONS ARE NOT SHOWN, BECAUSE., MORE SATISFACTORY RESuLTS ARE OBTAINED WHEN SUCH COMBINATIONS ARE FACTORY ASSEMBLED WtTH SPECIALLY DESIGNED SQUEEZING Fl)(TURES THEREFORE WHEN ONE OR MORE SPRINGS ARE WANTED FOR REPLACEMENTS ON A RELAV, SPECIFY THE RELAY NUMBER OMITTING THE COIL SUFFIX AND ADDING SUFFIX ''X': FOR EXAMPLEL WHEN SPRING REPLACEMENTS ARE WANTED ON A RELAY f?-2437 Al ORDEH R-2437 X THE COMPLETE SPRING COMBINATION PROPERLY MOUNTED ON THE HEEL PIECE WILL THEN BE FORWAf?OED. SHOULD ·A, COIL BE REQUIRED, SPECIFY THE PAP:r NUMBER STAMPED ON THE SPOOL HEAD AT THE ARMATURE END • OF COlL, ~S SHOWN. IN PICTURE, SHOULD THE NUMBER BE OBLITERATED, SPECIFY, COIL FOR RELAY AND LIST THE PROPER RELAY NUMBER COMPLETE. EXAMPLE: COIL FOR RELAY R- 2437 Al D-3<o9O-A GUIDE POST RIGHT D-3G>91-A GUIDE POST (LEFT) D-54304O-A SLEEVING 4PCS. 7/lf>"LONG D-7b70l-C SCREW D-1/378-C CLAMP WASHER I/ " G-32x 14 F.H.1.M.SCR. COIL MTG. 0-7~098-A RESIDUAL sc~!:W D-7721 ·B NUT Q-75=312-A ARMATURE BUSHING \ \COIL P~ .-~ 0 . STAMPED HERi D-7lllo3-A RIGHT ARMATURE \ \~ - 32 X 1/4 D-711'=,4-A LEFT ARMATURE RH t.M SCR. COMPLETE RLY. PC . NO. STAMPED HERE. (UNDERSlDE OF HEEL PIECE) RELAY ASSEMBLY HORIZONTAL TYPE SHUNT FIELD DR.J.JN CH i<'D. AUTOMAT IC ELECTRIC COMPANY CHiCAGO, lJ , S . A 1 AP P D JI .W.8. TCI Library: https://www.telephonecollectors.info/ M0-83 HOW iO ORDER REPL,\CEMENT PARTS FOR RELAYS ·---- ISSUE;:4 WHEN ORDERING PAR'TS, SPEC\FY PA.R"f NUMBER AND NAME. THE INDIVIDUAL Pit.RT NUMBERS OF SPRINGS A.NO COMPONENT PARTS THA, GO iO BUILD UP SPRING COMBINA.ilONS ARE NOT SHOWN BECA.VSE MORE SA.TISF'A.CiORY RESULTS ARE OBTA.INEO WHEN SUCH COMBINA.TIONS ARE FACTORY ASSEMBLED WITH SPEC IA.LLY DES IGNED SQUEEZING Fl XTURES. THEREF"ORE, WHEN ONE OR MOR£ SPRINGS ARE WANiED FOR REPL1'CEMENTS ON A RELAY, SPECIFY THE RELAY NUMBER OMITilNG 'THE COIL SUFFIX AND ADDING SUFFIX "'X: FOR EXAMPLE; WHEN SPRING REPLACEMENiS ARE WANTED ON A RELAY R-3070-A.1, ORDER R-3070-X. THE COMPLETE SPRING COMBINA.1'10N PROPERLY MOUNTED ON THE HEEL PIECE WILL THEN BE FORWARDED. . SHOULD A COIL BE REQUIRED, SPECIFY THE PA.RT NUMBER STAMPED ON THE SPOOL HEAD AT THE ARMATURE ENO OF COIL, AS SHOWN IN PICTURE. SHOULD THE NUMBER BE OBLl'TERA.TED, SPECIFY COIL FOR RELAY AND LIST THE PROPER RELAY NUMBER COMPLETE. EXAMPLE i COi L FOR RELAY R • 3070 • A\. IF AN ARMATURE IS REQUIRED, SPECIF"'( NAME or PART FOR RELAY ANO LIST ,HE PROPER RELia.Y NUMBER COMPLETE. EXAMPLE; AAM1'TURE FOR R-3070-AL 4- 0 .. HT M. SC.REW LENGTH A~ R.E~UIREO 3" 4-40>tT6 FIL.H.I.M. SCREW O-11O&0-A DOUBLE HOLE WA~HER o-1os-ze4-A COVUt. RETAINING SPRING 0-7137~-A AR.MA,UflE ~~~EM LV COi\.. NO. STAMPED HERE D-79943-A CORE ASSEMBLY L-aa-i.i~,.___JL- COMPLETE RLY. PC.NO. STAMPED HERE (UNDER.SIDE OF HEEL PC. COIL AS REQUIRED D-75749-A ARM. BUFFER 0·15G82:A TERM. (LONG){ON DOUBLE COMB.) D- IS'<o8 HI TE R.M. (SHORT)J(oN SINGLE COMB) D· 15682·ATERM, (LONG) . RELAY ASSEMBLY HORIZONTAL TYPE A.C. AUTOMATIC ELECTRIC COMPANY CHICAGO, U.S. A, P AW.B. ~ 'l.AAW. CHK.P.F. 8. t-----------~1------L----I MD-84 TCI Library: https://www.telephonecollectors.info/ 1-20-4'2 ISSUE: l HOW TO ORDER \5~.2. \SS: 3 r. ~-10-48 -.iG.ED 01'<~ c:RINC, NOTES AND REMOVED LOC.AT,ON OF SPGS. IN PIC:.· T~e:. ,. LT. F. X.W. ISSUE'.4 REPLACEMENT PARTS FOR RELAYS . -··--------··. WHEN ()ROERING PAP.TS SPPl""IFY PART NUMBER. P..~O N1'ME. THE. INDIVIDUAL ~ARr NUMBERS OF SPRINGS AND COMPONl;.NT PAP.TS THA'f c.o TO e,ulLD UP SPRING CQMe,INATIONS ARE NOT SHOWN, BE.CAUSE:, MORE. SAT1SFACTO?.Y RE.SULTS A.RE. OBTAINED WHEN SUC.H C0Me,1NAT1ONS A~E. FAC.TORY ASSE.MBL..ED w,r~ SPECIALLY DE.SIGNED SQUE.EZ i,-J~ F'JXiURE:.S THE.AEFORE w,-nu,J ONE OA. MORE SP~INGS ARE. WAN"l'ED FOR A.E.PL..AC:.E.Mc.NTS ON A RE:.LAY, SPECl~Y THE RELAY NUM'Bi.R OM IT Tl NG THE. C.O IL SUFF l'l'. AND A1'DINC::. SUFFIX•',<.''. l="OR EXAMPLE . WHEN SPRl"1G ?. E.PL..A<:.E ME.t-iTS ARE. WANTE.D 01'14 A RE.LAY K•l020-AI OP.DER t<-,ozo-x THE. COMPLETE. SPRING COMBlNAT tON PROPE.~L..Y MOU NTE.'D ON Tl-IE. l-lc:.E.L PIECE WILL THE.N BE. J:'0RWARDE:O. S1-lOULD A COIL BE 12.EQUli:lE.J), 5PE.CIFY THE. PART NUMSE.~ STAMPE.DON THI: SPOOL HE.AD AT iHE. A~MATUAE END Q;."COIL 1 AS ~liOWN lt'i PICTURE. SHOULD THE NUMBE.R e,E OBL1TE.RAiE'D, 5F'EC.l'FY COi\.. FO~ ~E.I...A'( AND LIST THE PROPE~ RELAY NLlMBER COMP LE. re. EXAMPLE: COIL F"O~ RELAY K-IOZO·AI O-17OCoO DOUBLE HOLE. 0-44-CoCol WA$HER D-1Col95 LOCKING LEVER 4-40 F.H.H:T.M. SCR W LENGTH AS RE~UIRED I INSULJ>.TOR · Q-7<o••H! G\JIOE ~_!:REW /0·1724-A WASH~ 0-15~~ A.RM /RETA.ININGCL\P I D-71 ~'2.8-t-. ARMA"TURE. A'5SEM'3 1 't' CO\L NO. S"Tl\MPEO \\E.R.t CO\L ~~ RE U\RE.O 0-G'3050-A. HEEL PIECE f>.CZ,SEN\t!>\..'< 0·75~22 SUS~\NG USEO ON\..'< D-7<o4-18 SH0ULOER. SC.REW ON 4 TERN\. COIL • 5'' 8-32.~l<o FIL.H.1.M. SCRE.¥11 0-\09'20 TENSION S?RING COIL MTG. RELAY ASSEMBLY /) MANUAL TYPE {27) NOTE: USE D·49B4 COVER. DR'.A.A.'.N. f>.pp•o .,. il_Jr ,r M D-87 1J_.N..;;....;...;..._______._ _ _ _ _ _ _ _ _ _ _ __. ----..L.._.....;.._ AUTOMATIC ELECTR\C COMPANY CH'KO:P.F.B.4...-_ _ _ _ _c,;;;.;_;H.,;.;IC:..A..;,G,;;.,".;;.o.,_u.;;.._s..;,.;..;A •__ TCI Library: https://www.telephonecollectors.info/ It.-t.<o-41 ISSUE NO.I 3-4~5~ A'DI>EJ> NOTE ANP REMOVE p, ,. ~~o~ Af.. .. ,. ,,,,,,,,, 1:r, F.x.w. 19S: 2 HOW TO ORDER REPLACEMENT PARTS FOR RELA"<S WHEN ORDERING PARTS SPECIFY PART NUMBER ANO NAME THE INOIVIOUAL PART NUMBERS OF SPRINGS it.NO COMPONENT PARTS THAT GO TO BUILD UP SPRING COMBINJrrlONS ARE NOT SHOWN BECAUSE MORE SATISFACTORY RESULTS ARE OBTAINED WHEN SUCH COMBINll>.TIONS ARE F~CTOR'< ASSEMBLED WITH SPECIALLY DESIGNED SQUEEZING Fl>C..TURES. THEREFORE, WHEN ONE OR MORE SPRINGS ARE WANTED FOR REPLACEMENTS ON A. RELA"'<, SPECIFY THE RELAY NUMBER OMITTING THE COIL SUFFI)(. AND ADOING SVFFl'X ")(." FOR EXAMPLE: WHEN SPRING REPLACEMENTS ARE WANTED ON P\ REL1'.Y K- 2437-AI ORDER K-2437-X. THE COMPLETE SPRING COMBINA1ION PROPERLY MOUNTED ON THE HEEL PIECE WILL THEN BE FORWARDED. SHOULD A COIL e,e REQUIRED SPECIF'< THE PART NUMBER STAMPED ON THE SPOOL HEAD AT THE ARMATURE END OF COIL, AS SHOWN IN PICTURE. SHOULD "THE NUMBER BE OBLITERA.'TED, SPECIFY COIL FOR RELA"< ANO L\ST THE PROPER REL.A~ NUMBER COMPLETE. E:.XAMPLE.: COIL FOR RELAY K-2437A 1 lF AW A~MATURE,ETC, IS RE~UIR.ED, SPECIFY NAME. OF' 'PART Fo~ RELAY ANO LlST THE PROPER RELAY NUMB!:!.r::l COMPLETE. EXAMPLE'. ARMATURE. Fo~ K-2437·AI 6-32X 5/1~"FIL. H.1.M.S COit. MTG. D-75322-A 8USl-l1Nq USED ONLY ON 4 TERM. COIL D-7b417-A GiUl:DE POST D-1724-A WASHER D-lr:;469-A ARMATURE RETAINING CLIP ARMATURE COIL AS RE UlRED COIL NO. STAMPED HERE NOTE-I WHEN INDIVIDU,&.L RELAY COVER IS REQUIRED ORDER 0-4970-A RELAY ASSEMBLY MANUAL TYPE (27) AUTOMATIC ELECTRIC COMPANY CHICAGO, U.S.A TCI Library: https://www.telephonecollectors.info/ MD-88 .--- HOW 'TO ORDER REPLACEMENi PA.RTS F"OR RELAYS WHEN ORDERING PARiS, SPECIFY PAR, NUMBER ANO NAME. THE INDIVIDUAL PART NUMBERS OF SPRINGS AND COMPONENi PARiS iHAi GO iO BUILD UP SPRING COMBINAilONS ARE NOT SHOWN BECAUSE MORE SATISFAC'TORY RESULTS ARE OBTAINED WHEN SUCH COMBINA.ilONS ARE FACTORY ASSEMBLED WITH SPECIALLY DESIGNED SQUEEZING FTXiURES. THEREFORE,WHEN ONE OR MORE SPRINGS ARE WANTED FOR REPLACEMENTS ON A RELAY, SPECIFY THE RELAY NUMBER OMITTING iHE COIL SUFFIX ANO A.DOING SUF'FTX. "X". FOR. EXAMPLE; WHEN SPRING REPLACEMENTS ARE WANiED ON A RELAY R.·8010-A, ORDER R· 80f0 - X. 'THE COMPLETE SPRING COMBINATION PROPERLY MOUNTED ON 'THE HEEL PIECE WILL THEN BE FORWARDED. SHOULD A COIL BE REQUIRED. SPE:CIFY THE PART NUMBER STAMPED ON THE SPOOL HEAD AT THE ARMATURE END OF" COIL, AS SHOWN IN PICTURE. SHOULD THE NUMBER SE OBLITERATED, SPECIFY COIL FOR RELAY AND LI Si TH£ PROPER RELAY NUMBER COMPLEiE. EXAMPLE; COIL FOR RELA.Y R-eom-A1. IF AN ARMATURE IS REQUIRED, SPECIFY NAM£ OF P,6..RT F'OR RELAY A.ND LIST THE PROPER REL~Y NUMBER COMPLETE. EXAMPLE ; ARMATURE F'OR R- 8010 -A.1. D-3Co9O·AGUI0f PO~T (RIGHT) 0-3~91·A GUIDE POST (LE.FTj 0·77191-A KNUR.LED NUT D-7Co7O1-C SCREW D-17378-C CLAMP WASHE.R COMPLETE. RL't'. PC. NO. ---=::....._-----,..._--r-5TAMPED MERE (UNDERSIDE OF' HEEL PC.) D-7,6098·A- RE510UA.L SCREW 8-32 X{~" FIL.1-1.1.M.S. COIL NO. STAMPED HERi!: (COIL MTG.) \.___ _A_R_M_A_T_U_R_E_ D-75322-A BUSHING USED ONLY ON 4 TERM.-CO1L \ 0·75312:A AR.MATURE BUSHING RELAY ASSEMBLY HORIZONTAL TYPE MICROMETER ADJUSTMENT AUTOMATIC ELEC.TIUC COMPAIIIY ~ A.W.B. CHICAGO, U. 6, A - - - OR.C.M.8. CHI(. }1-----...-------+---_..-----1 C TCI Library: https://www.telephonecollectors.info/ MD-89 HOW TO ORDER REPL,\CEMENi PAATS FOR RELlr,.YS WHEN ORDERING P-'RTS, SPEC\F'Y P,\.RT NUMBER ~D NAME. iHE INDIVIDUAL PART NUMBERS OF" SPRINGS AND COMPONENT P,\RTS TW,\T GO iO BUILD UP SPRING COM81NATIONS ME NOT SHOWN SEC1'USE MORE SATISFACTORY RESULTS ARE OBTAINED WHEN SUCH COMBINAT\ONS ARE FA.CTORY ASSEMBLED WITH SPECIALLY DESIGNED SQUEEZING FIXTURES. iHEREFORE, WHEN ONE OR MORE SPRINGS ARE W1'NTEO FOR RE:PL,\CEMENTS ON ti.. RELJ.."'f, SPECIFY iHE RELAY NUMBER OMITTING THE COIL SUF'FIX AND ADDING SUF"FlX. "X: F'OR EXAUPLE; WHEN SPRING REPLACEMENTS ARE 'WANTEO ON A. RELAY O·55245-C, ORDER D-55245-X. iHE COMPL£"TE SPRING COMB\NA"TION PROPERLY MOUNTED ON "THE HEEL PIECE WILL THEN BE FORWARDED. SHOULD A COIL & REQ\JIREt>, SPEClfY THE Pr..RT NUMBER STAMPEt> ON THE SPOOL HEN> AT iHE ARMA1'URE ENDOF COIL, A.S SHOWN IN P\CTURE.SHOULO THE NUM8£R BE OBLITERATED, SPECIF"V COIL FOR REL1'"r' A.ND LI Si "THE PROl'n RELAY NUMBER COMPLETE. EX1'MPLE; COIL FOR RELA"'f D- 55245 -c. O-7G.477-A euFFER SCRl!W AS4HM 0·7719·A NUT - 0-7C.811·H F.H.M.SCN:W D· .17OC.0·A W"SHER COMPLETE. RLV. PC.NO. STAMPED ON UNDERSIDE OF MEEL Pc. 0-7S3i.2.•A BUSHING 5"FI\...H.I.M.S.(COI L MTG.) 8-3'Z.Xffi COIL NO. ST"MPED H&Ra 0-44GG.I.. IIIISUL1'i0R AS A.£ Ul~EO 0-<;.3056-A Hl!EL PIK& "$Sl!tM& NOTE-I WHEN Mt \MO\V\°""L f\£Lf\"'< COVE" IS REQU\Reo ORDER 0-49~\O-"- RELAY ASSEMBLY HORIZONTAL TYPE VIBRATING REED TIME AUT'OMATIC ELECTRIC C:OMP~NY CH \CM:10 U,&.". APP'O. MD-90 TCI Library: https://www.telephonecollectors.info/ ISS~: Z 8·!0•54 Rl:TR-'CED, HOW TO ORDER REPLACEMENT PA.RTS F"OR REL~'fS WHEN ORDERING PARTS, SPECIFY PART NUMBER AND NAME. THE INDl'IIOUA.L PART NUMBERS OF' SPRINGS AMO COMPONEN'T PAAiS THA.T GO TO BUILD UP SPRING COMBINA.T\ONS ARE NOT SHOWN BECAUSE MORE SA.1'\SFA.CTORY RESULTS "RE OBTAINED WHEN S\JCH COM8\N"TIONS i\.RE F'A.C,ORV ASSEMBLED WITH SPECIII.LL'f DESIGNED SQUEEZING F'IXTURES. THEREFOR£, WHEN ONE OR MORE SPRINGS A.RE WANTED FOR REPLACEMENTS ON A. RELA."1'. SPECIF"'< THE RELAY NUMBER OMITTING 'THE CO\L SUFFIX ANO A.DOING SUF'F"IX "x:• FOR EXAMPLE; WHEN SPRING REPLACEMENTS A.RE WANTED ON A.RELA.'f D-555\7-A,ORDER D-555\7-X. THE COMPLETE SPR\NG COMBl~TION PROPERL'f MOUNTED ON 'THE HEEL P\ECE W\LL 'THEN BE FORWARDED. SHOULD A. CO\L BE REQU\RE.D, SPECIFY "THE PART NUMBER STAMPED ON "THE SPOOL HEM> A., "THE AAMA"TURE END Of" CO\L, AS SHOWN \N PICTURE. SHOULD THE NUMBER BE 08LITER/l.TEO, SPEC\F''f COIL F"OR RELA.'i AND L\ST l'HE PROPER RE.LI\'< N\JMBER COMPLITE. EXAMPLE; COIL FOR RELAY 0-555\7-A. IF AN AA.M"TURE IS REQUIRED, SPECIN NA.ME OF" PAA'T F"OR RELA.'< A.ND LIST T\.\E PROPER REL~V NUM~ COMPLETE. EXA.MPLE; A.RM1'TI..JIU: FOR D- 55517-A.. D-172.87-A WASHER 0-7'°477-A SUFFER SCREW ~SS£Me),"C" 0-7719-A NUT COMPLETE RLY. PC. NO. STAMPED ON UNDERSIDE OF HEEL PIECE. 0-75~2.2-A BUSHING 0·1719~e- LOCK WMMER 8-.32 "-~~ FIL.H.1.M.S~OIL MT~ 0-790009 ·A ECCENTRIC CORE END 0-44b'-1·A INSUL~TOR COIL NO. !ii'T~Mfl'EO HEltE COIL "-4:» RE NOTE-I WHEN AN INDIVIDUAL F\ELlt\"< COVER IS RE~UIRED ORDER 0-4941O-E. 0-E>~ose,-~ ·HEEL PIECE AhEM&LV RELAY ASSEMBLY HORr Z.ONTAL TY PE POLE CHANGER a1-----------+---------1 MD-91 AUTOMATIC ELECTRIC COMPANY 0 AWB. CHICAGO, u.s.A UIREO Pk.A.A.W. CHl(.P.FS . ~ TCI Library: https://www.telephonecollectors.info/ 1-2.<o-42 HOW TO OROE.R REPl.ACEMEN'T PAR"TS ISSUE: I 6·2-SO IN NO'Te.S REJ-AY No. R-2.437-AI \I\ ,4~,.. ,;;,. l:T. - F.X. ISSUE: 2 ,,-.._ FOR R.EUWS WHEN OROER\NG f'ARiS SPEC\F"< PAR"T N\lN\SER '4..~0 NAME. THE INON\OUAL PART N\JMSER.43 OF SPRINGS ANO CON\PONEN"T PAR.TS iHAi GO TO BUILD UP SPRING C.OMS\N~ilONS ARE NO, SHOWN, BECAUSE. MORE. «5A1'\SFACTOR.'< RESULTS ARE OBTAINEO WHEN ~UCH COMBlf'lA"TIONS ARE FACTOR.'< A&SEMSLEO WITH SPECIALLY OESIGNEO SQUEEZ.\NG FIXTURES. THEREFORE, WHEN ONE OR MORE SPRINGS ~BE WAN"TEO FOR REt>Ll'.CE.MEN,S ON A RELIW? SPEC\f'I THE REL~"( NUMBER OM\TTll'-IG THE COIL SUF'F\1'. ANO ADDING SUFF\')I.. ••~! FOR. E"-AM~LE.~ WI-\EN SPR.\NG REf'LACEME.NiS ARE WMfTEO ON A R.E.U\'( D-8122.ZO-A.ORDER :0-812~-ZO -X · i HE COMf'LE"TE SPR.\~G COMBINATION PROPER.LY MOUN,-EO ON ,-t\E. HEEL PIECE PLUS T~E ARMATURE ASSE.MBL'< WILL THEN BE FORWARDED. SHOULD A COIL BE REQ.U\REO,SPEC.\~Y THE PART NUMBER. S,-~MPEO ON THE SPOOL HEAD AT TttE ARMA,URE. e~o OF COlL AS SHOWN \t{ P\Ci\Jf\E. SHOULD ,\-\E NUMBER BE OBL\TER.A,EO, SPECIFY cofL FOR REL~"'( 1'NO LIS, THE PROPEf\ REL~'{ NUN\0ER COMPLETE. E~AMPLE.: COIL FOR RELP.."< D-812.22.0 O-\O9545-A DAMPER SPG. 0-7<o701-E R.H.M.SCR.E.W D-173<.oto-A LOCY.. WAS\te. 0-1780-A WASHER ~" F. \-1.\.M. SC~E.W . e-3-z.x,(o COIL MiG. 0-7<o096·A.~ESID. SC.R. 0-772\-B HEX. NUT ,I U\REO COIL _NO. STAMPED t\ERE COMPLETE RLY. PC.NO. STAMPED HERE. (UNDERSIDE OFMEELPC,) 11 z RELAY ASSEMBLY 11 HORIZONTAL TYPE SHORT COIL OP.:/l...A.W. cw~o;P.F,B. AUTOMATlC ELECTRIC COMPANY CHIC ~GO u. s. "-· APP'O./ j I i I TCI Library: https://www.telephonecollectors.info/ ---- - - -- -- -- - - - - - MD-92 - - - - - -- -- _J ---- .. -•----·- 8-l'Z.·48 ISSUE.:1 1'2.-10-48 ADDEO .009" Disc . RI: SID· U,I\LS. I. F.X.W. ISS: 2 4-30·54 CHANGED TO TVJtE: 57 A f.'---- 1ssue:3 1'2.•13-5(, CHANGED BUSHIN~'S TO Sl.EEV~~~ HOW TO OR.DE.R RE.PLACEME.NT PAR.TS FOR. RE.LAYS WHEN ORDERIN(; PARTS SPECIFY PART NUMBE.R AND NAME., THE \NDIVlt>IJA.L PART NUMIHR. OF SPRII-JC.S ANO COMPONE.NT PAR.T"S THF>-.i GOTO BU\LO UP SPR.lNG, COMBINATIONS ARE NOT SI-IOWN, BECAUSE.,MORE SATISFACTORY RE.SUL TS AR.E OBTAll-,JED WHE.N SUCI-I COMBINATIONS AR.E. FAC..TOR.Y ASSE.MBLc.0 WlTH SPE.CIALLY DESIGNED SQUEE.'Z..ING F'l'X.iURE.S. THER.E.FORE WHE.N ONE. OR. MOR.E SPR.INGS ~l<.E WA NT E. D F"O R RE. PLP..CI: ME.NTS ON A RE.LAY 1 SPECIFY T)-1. E. RELAY 1-J UMBE. R. OM ITT ING Tl4E COIL SUFFI~ AND ADDING SUFFIX "x". FOR EXAMPL'=., WHEN SPR.ING REPLACE.ME.NiS AR.E. WA1-,JTED ON A RELAY RT·IOOG>l·Al2 OR.DER. R.T•IOOCol·X Tl-lE. COMPLETE. SPR.ING COMBINATION PR0PE.RLY MOUNTE.O ON THE. HE.EL PlE.CE. WILL T\.IE.N BE. F'ORWAR.D'E.D, SrlOUL.0 A COIL BE. R.E:QUIRE.D, SPE.CIF'Y THE. PART NUMBE.R STAMPE.DON Tl4E S'f'OOL HE.AO P.T THE. AR.MATUR.E: E.ND OF THE COIL, AS SHOWN IN PICTURE.. SHOULO THE. NUMe,ER. BE. OBLITE.1<.ATE.D, SF'E.CIFY COIL. F"OR. RE.LAY ANC> LIST TrlE. PRQPE.R RE.LAY NUMBER. COMPLETE.. E.X.AMPLE.: COi L F"OR R.c.LAY R.T· I OOG.1-Al'Z. . FXW, V";JK ISSU£;4 - - ·- ------t D·4-4-0'2C'o2·A INS . Cp • 32 >3/16 '' F .H . M -SCP.. . D-I7378-C CLAM? WASI-IE.&_ D-7(;,7 0 I ·0 SCR.'E:W D·G.73C,7·A YOKE: D-C:--5387-B YOKE. SPACE~ D-543040-A SL.EEV NG 4 PCS. 7/1&" LONG D-7C:.4ZO ·D 1<.ESID. SC.RE:W D-77124--D HE.X. . NUT <o-32 x 1/4" F' . r-1 . 1.M .SC.R.. COIL MTG . COIL PC.NO. STAMPE.0 eE.TWE.£:.N i:>OLE. PIE:.C.E.S ' D·<i,7 24-9 ·B A~MATUIGE. CORE. YOK'E. ASSeMe,LY COMPLE.TE RLY. PC . NO. STAMPED HERE (UNDERSIDE OF HEEL PC.) Al2MATUl2E. ASSE:MS. R.ESIDUAL.S L.E FT ARM . RIGHT ARM . DOUBLE. A~M. scra. (STANOAR.D) D-i l!:»S9·A 0·71690 ·A D-7I558-A .003" DISC . D·7I5.S9 ·B 0-7I590-P, D-7 i.S58· B .ooc.·· DISC D•7ISS9·D D-11sqo-o D-71558-D D-7 155 9-F D-71590 • F 1'•7155!!.-F' SCR.. (HEAVY DUT'Q D-71559-E D•7IS90·E 0 -7I55&-E: NONE. .0 0 9" DISC DR. . I.T. C~'K 'O. F.X.W. RELAY ASSEMBLY TYPE 57 AL SHUNT FIELD AUTOMATIC E.LE.CT~IC COMPANY CHICAGO ,u .s .A. TCI Library: https://www.telephonecollectors.info/ MD-180 • ~ - 0-7~1498-A MTG. BRKT. (FOR 12 BANK LEVELS OR GREATER F.X.W !!!,_Uli~;,;;;2....._.,.. 7-54 D-7"0739-A SCR. D-75022~-A BUStilNG RE\trSED. ADDED PC.NO'S. &DESCRIPT ONS. ~.--~NTERRUPTER SPRINGS(NOTE 2) F.X.'t;_ ISS1. 3 rr,- 17376-A LOCK WASHER /'7._!3·?.2.xi R.H.1.M.SCR. 0-tq?,18-A STUD D-1724-A WASHER 0-30177-A FRAME YOKE SPACER (NOTE 2.}--'\-1-#il,.:,,..i,..,,&" COIL (NOTE 2)----.__\ ~:::::.::~4-i+--D-445«:fl·C INS.WASHER BANK ASSEM, (NOTE 2) D-17566-A WASHER D-77193-C HEX.NUT D-10~648-A SPRING D-7"0546-A ADJ. SET SCR. D-77055-A LOCKNUT D-750162-A BUSHINC:f ,, SW ITCH PC. NO. STAMPED ON ----D-71574-A ARMATURE BACI< OF F~AME WIPER ASSEM.(N0TE 2.) - f - - - - - , D·l7306·A CUP SP6.WASHER D-77153-A NUT D-731344-A SHAFT SUPPORT BRKT, - - - - JHQq649-A STOP SPRING SHAFTASSEM.(NOTE 2) D·7&0561-A HEX.ff. SCR. OFF NORM.SPG.ASSEM.(NOTE 2)} D-760569-A HEX.H.CAP SCR. D·175Gi7·A DOUBLE HOLE WASHER NOTES:1-WHEN ORDERING PARTS, SPECIFY PART NO, & NAME. 2-IF A WIPERASSEM.,BANKASSEM.,SHAFT ASSEM. ETC. IS REQUIRED, SPECIFY WIPER ASSEM. FOR PC. NO. OF ROTARY SW. TYPE 45. EX.AMPLE :-WIPER ASSEM. FOR SW-SO-ABC ROTARY SWITCH TYPE 45 D"· I.T, 3 _ 11 _◄ 8 ;i,fl('C.,, R.TF.' {3. ______ ______ __ ______ ___________ MD-182 ._ AUTOMATIC. ELE.CTRIC COMPANY ,.;,_.;.._ CMICAC.0, U.S.A //1,_; ......... APP'D. __,;_ /J./..11. 7( .__ TCI Library: https://www.telephonecollectors.info/ • - 20- 51 ISSUE NO. t I-IOW TO ORDER REPLACEMENT PAR'TS FOR RELAYS 3-•g-..,t;, u t;"'~ I.I. I.S. -rclk( :: 2. 1,-12-5~ FXW. 1,,.,6, T.>K - ----IS$1JE:3 WHEN ORDERING PARTS SPECIFY VA~ NUMe.E!R ANO NAME. T\4E lNDIVIDUAL P"RT NUMBER OF SPRINGS AND COMPoNENT PARTS T\4AT GO TO &UlLD UP SPA.ING C0MSlNA'TIONS ARE NOT SI-IOWIJ, BECAUSE MORE SATISFACTORY R.ESULTS ARE OB~INED WHEN SUCH COMBINATIONS AP.E ~~ ASSENe.LED WITH SPECIALLY OES\GWED SQUEEZING FIXTURE'o. il-lERE.R>R~ WHEN ONE OR. MORE SPRU,IGS ARE WANTED FOR. CtEPLACEMENTS 01-l ~ RELAY SPECIFY THE. RE.LAY NUMBER OMlil"ING THE COlL SUFFIX AWD At1DING SUFF'IX" X: FOR. EXAMPLE., WHEN SPRING REPLACEMENTS ARE WANTED ON A RELAY RT-Z.500881\ ORPEtt' tn'·'Z&OO~X TMECOMPLETE 9PR.ING COt-1BINATION PROPE~LY HOUNTEt> ON THE HEELPIECE WILL THEN BE FORWAROED. SHOULD A COIL 'oE Q.EQCJIRED SPECIFY T+-4E Pl>.RT NUMe,ER STAMPED ON THE 'oPOOL\-IEAD AT Tl-IE ARMATU~ END OF THE COIL AS SHOWN IN PICTU~e. S\.lOULD THE NUMBER BE OBL\TERPr.TED, SPECIFY CO\L FOR RELAY J.t-Jt7 LIST THE PROPER ~ELAY NUMSER COMPLETE. • EXAMPLE: COIL FOR RELAY RT-'2.600?tBII COMPLETE RLY PC. NO, STAMPED J.IERE (UNDERSIDE OF HEEL PC.) D-760772-A SPL PAN.HD. M. SCR. CO\L MTG. D-7E,0678·A SCREW 0-175G'l·A CLP. WSHR. D-G740o·I>. YOKE D-<.'1404·A SPACER 0-772/-F HEX.NVT. 0-11595-A ARMATURE (SCR. RESIO.) 0-11'595-B ARMATURE (.003"01sc RESID.) D-1\595-C A.RMA,ORE (NO RESH>.) D·7l595-E ARMATUR.E(.006"DISC RESID.) D-7159 5-F ARMATUR~ ( .009" RES/[).) CtJ/L NVM8£R STAMP Hc/U R£S/tJI.IAL .SCREW I)- 7to098 -8 (" S7A/IIL>AR/J RELAY ASSEMBL1 TYPE 58A OR. F', X.W. 1 CHK t7. t:r: AU'TOMAT\C ELECTRIC COMPANY APP'D CHICltt.GO, US~ TCI Library: https://www.telephonecollectors.info/ MD-185 lf-(i,-Sf ISSUE: 1 11-3·53 PROPERLV RELOCATED G' - ~EPOST F.1'.. ··• 1ssue:2 · 3·16·-", ADDED t'·7Et0753·A -::.'5,.te,/. IJ,TJK ISSUE: ,C. HOW TO ORDl:.A RE PLACEMENT PI\RTS F'OR RE.L tt.YS WHEI-.I ORDERING PARTS SPECIFY PART NUMBE~ AND NAME . TME. INDIVIDUAL. PART 1-JUM&ER OF SPR INC.S AND C.OMF'"OMENT PARTS TMAT <.O TO ~Ull.D UP SPRING COM61NII.TION~ A~E NOT S~OWN , l!E.C.~USE MORE SATISF'ACTORY AESUI..TS ARE. 0&TAINE.D WHEN SUC.M C.OMl!>INATIONS AJ:1.E F'AC.TOR"'( A.SSEMe,l.~D WITH SPE.CIA.LLY DE SIGNED SCi,\UE.E. 'Z.INC F'll<TUAE.S TH EREF'ORE: WME.N OHE ORM ORE SPQ ING,S ARE WANT!.O FOR ?.E.Pl.Pl.¢E.ME.NTS ONA RELAY I SPE.ClFY THE RE.l.AY NUM&'E.P.. OMITTING, Tl-!£ CO ! L. SUFFI')(. ANO ?.DP1NC:. SUF''F l 'l<. " X" . f'OR E.,<. AMPLE, WJ.lEN SPRING, Q.E.PL"'-C:.E M!.~TS ARE WANTE.O ON A RE.LP..Y RT·1200'2•AII QQOER RT·t'2O02-X. . TME. C.OMPL E.TE. SPII.ING C.OMSIN.0..TION PROl=>E.RLY MOUNTED ON Tl-IE. HE.E.LPl&;CE WILL THEN &E. FORWAROE.O . SHOULD A COIL !>E RF..~UIRE.D, SPEC.IFY TMc. PA~T NUMl!!,E.R. STP.MP!.t> ON THc. SPOOi.. MEAO AT TME. ARMATURc. END OF THE COIL, AS S~OWN I N F' i C.TURE. . SHOULD T~E NUM!,E.R SE. 01!.LITERATEO, SPE.CtF'Y COIL FOR i:lEL,ir..y AND L-IST THE. PROPER RE L.~Y N UM!,E.R COMPL.ETE. . EX.AMPLE : COIL. FOR P.E.LAY R.T• 12.002 · A t 1 0-49643-A COVER. -0·1932.Q·A S"TUO o-,so1'22·A BUSHIN(j D· 3b90·1\ GUIDE POST(RIGHT) USED ON 4 TE.R.M .CO\L -----..: 0·3691-A GUIDE POST(LEFT) 8•~'2 X S/,<.,"FIL .HIHM.SC.~ COI L MT~ ~ D-7G,7O l·C. 5C..RE.W C:>·I 7378 ·C. C:.LAMP W~SHE.R -77124-D HEX.NUT RJ::.SIDUAL SCR. D-'76420 - .> STANDM~D 0-7~0753-A. HEAV', DUTV ARMATURE A.SSEMBLY COil. 1-,,10, SiAMPE.D H!RE COMPLETe RLY. PC.NO. iTAMPED HERE (UNDERSIDE OF HEEL PC.) ARMATURE ASSE.MS . QESIDUAL.S .--., LE FT' ARM !!<It.HT ARM . .DOU!)i..E ARM . SC~. (STANDI\RD) D-7 1:,Sq·A f':J:I: I D-71S5~·P; D -7 ; 5CJO · B I1'· 7155& -B .oo",· DISC D·7 15?:,~-D D·7 15'90·D . 009" DISC CH '1-<"D \ ~ ~ ISS!·A -003" D I SC D-71558 · O o -11sqo-J NONE OR. 1.T. 0·7 i5qO·A 0·7I559 -F D-71590·F 0·7 I 558-F SCR. (ME.AVY OUTY D-7 I5!:>9 -E D-7 isqo-E D· 71SS!•E RELAY ASSEMBLY TYPE 57 AL AUTOMAT'I(; EL.E.C.T~IC COMPANY C.HICA~O ,U.S . A . TCI Library: https://www.telephonecollectors.info/ MD-186 ft- 5·51 HOW TO ORD~R A!.PLAC.EMENT PARTS ISSUE: f F'OR. R'E.LAYS 11-3-55 WHEN ORDERING P/:1..RTS SPECIFY PART NUMe.E.R ANO NAME. THE INDIVIDUAL PART NUM!,ER OF SRRINC.S ANO COMPONE.NT PARTS TI-\AT C-.0 TO &UILO UP SPR INC.. C.OM~INAT IONS· ARE NOT SHOWN,BE.CAUSE MORE SATISFAC.TORY ROPERLY E.J--Q..CATE D .~ ;~ X.W. RESULTS AR.E O!.TAINEO W~EN SUC.H C.OM&INATIONS AR'- FA<::.TORY ASSE.Ml!LED WITH SPECIALI...Y OESIGNE.D S~UEl!.'Z.ING FIX.TURES . THEREFORE W~E.N ONE OR MORE SP~lNGS ARE WANTED FOR REPLAC.EME.NTS ON A QE.LAY1 5PE.C.IFY THE. RELAY NUMBER OMITT'INC:. THE COIL ~UFFI)(. ANO ADDll,,IG SU'F'Ft'l("'l(~ FOR EXAMPLE., WHEN SPRING RE.PLACE.ME.NT'S AR'£ WAN'TEO ON A i::t.E.L.AY RT-24002-A 11 ORDER RT-24OO2.· X THE COMPLETE SP~INC. COMBINATION PROPERLY MOUNTED ONT~E ~E.ELPIE.CE. WILL TME.N &E. FORWA~OEO. SHOUl-0 A COIL BE Rl:QUIRE.D SPEC::.IFY THE PART NUMBER ST~MPE.D ON TME SPOOL.ME'-' D AT THE l\s:t.MATURE. E.ND OF' Tl-IE. C.OIL 1 A.S SHOWN IN PIC.iURE. !>~OULD Tl-lE. NUM !,E.R BE OBLITERATED I SPEC.LFY C.OIL F"OA. RE.L~Y ANO LIST THE PROPl:.R NUMBER. C.OMP'L.E.TE · . E.XAMPLE: COIL FOR R.E.L.A.Y RT-24002•A'J1 0•4-9843-A COVE~ A.r.e. .s ue12 3-16-56 l)DEP - 7607~ (,W, TJ"'- ,SL1G; ·4 0-19319-A §UIDE. ?oST D·7SOl22·A BUSHING USEDON4TERM.COIL 5" 8·3Zxn. FIL.H.I.M.SCR. D-3~~0-A GUIDE POST(Rl.GHT) D-3{,CJl·A GUIDE POST(LEFT) COIL MTG. 0 •7to70I-C S R . D•l737D·C:. C.LAMP WA.S'HE.R, 0-C.73 97 YOKE Cl .(., 5'3 6 7 • e YO K-e:- s=-,,,..A-C.~E.~~ COMPLETE RLY. PC, NO. 5TAMPED HERE (UNDERSIDE OF MEELPC,) 0·77124-D HEX.NUT R.ESIOlJ4-L SCR . D-76420-D STANDARD D-760753-A HEAVY DUTY ARM~TURE. ASSEMBLY C:.OIL. NO. STAMPED Me.Re. ARM~TUR~ ASScMS. RESIDUALS LE.FT ARM. RIC.MT ARM. DOU&LE ARM. SCR.(STAND"RD) r>·71'»38~A 0·716~5 - A D·71E>30-A .003 " DISC D - 71€:138 - B 0-71 ~ 35-8 0-71630 - 8 . ooc.o'" DISC. 0 -71•~8-C D ·71E. 3S·C 1:1-11,so-c NONE 0-71'-38-0 0 ·71~35-1) 0-71630- 0 RELAY ASSEMBLY .oo~" cnsc. P-71~38-E ?>·71635-E D·71E,?t0-E TYPE 57 A"S SCR.(lfl!.$1.VV DUTY) 0·71"3& - F D ·7lw35-F 0·71&30-F c,i::t, . I.T C.H 'I( 'D R:t: . ' ' AUTOMATIC E.L~C.TA.lC.'. COMPA""NY CHIC:AC.O,U.S.A MD-187 TCI Library: https://www.telephonecollectors.info/ ,z •'4- • ! 1 ISSUE : 1 HOW TO ORDER REPLACE.MENT PARTS FOR RE.LAYS WHEN ORDERING PARTS SPECIFY PART NUMBER AND NAME. THE INDIVIDUAL PART NUMBER OF SPRINGS AND COMPONENT PARTS THAT (aO TO BUILD UP $PRING COMBINATIONS ARE NOT SHOWN, BECAUSE MORE SATISFACTORY RESULTS ARE OBTAINED WHEN 5UCM COMBINATIONS ARE FACTORVASSEMBLED WITH SPECIALLY OESl~NED SQUEEZING FIXTURES, THEREFORE WHEN ONE OR MORE SPRINGS ARE WANTED FOR REPLACEMENTS ON A RELAY, SPECIFV T.,_.E RELAY NUMBER OMITTING THE COIL SUFFIX AND ADDING SUFFIX "X" FOR EXAMPLE, WHEN SPRING REPLACEMENTS ARE WANTED ON A RE LAV RT-21095·C11 ORDER RT-21095-X THE COMPLETE SPRING COMBINATION PROPERLY MOUNTED ON THE HEELPIECE WILL THEN BE FORWARDED. SMOULD A COIL BE REQUIRED, SPECIFY THE PART NUMBER STAMPED ON THE SPOOL HEAD AT THE ARMATURE END OF THE COIL, AS SHOWN IN PICTURE. SHOULD TME NUMBER BE OBLITERATED. SPECIFY COIL FOR RE LAV AND LIST THE PROPER RELAY NUMBER COMPLETE. EXAMPLE: COIL FOR RELAY RT- 21095 -c 11 8·32. x .2. 16 FIL. H. I.M. SCR. COIL MTG. 0-750122-A BUSHIN<i USED ON 4 TERM.COIL D·E.5387•8 YOKE SPACER 0·767O1-C SCR. _ _____,0 -17378-C CLAMP WASMER D-67397-A YOKE COMPLETE RLY. PC.NO. ---~'-<------11---411~..-...<:. STAMPED HERE (UNDERSIDE OF HEEL PC) 0·63067-A POLE PIECE 5·40x I 4 R.H.I.M. SCR. ARMATURE ASSEM.-------' ' - - - - - - C O I L NO. STAMPED HERE ARMATU~E AS5EM5. RESIDUALS DOUBLE ARM. . 0O~ DISC 1'· 715S8·0 RELAY ASSEMBLY THREEPOLE TYPE57AL SET SCR. ADJ. & DAMPER SPRING MD-188 g;~DT;2.·13·S\ AUTOMATIC EtECTRIC. COMPANY APP'D ,/4,.,/4 RTF..__ _ _c_H_1c_A_G_o_._u_._s_._A_._ _ _ _ _ _ _ _ _ _ __..,_ __.__ _ _ _ _ _ _ _ __, TCI Library: https://www.telephonecollectors.info/ 8 · 1 • 52. ISSUE: 1 4·2.7·54 REVISED, ADl>ED PC.NO'S. S.DF~RIPTION /P-7lbl4-A AR.MATURE ASSEM. INTERRUPTER SPRING ASSEM.(NOTE 2) / OFF NORMAL SPG. ASSEM.(NOTE 2) ] YOKE SHIM (NOTE. 2) D-17106-A WASHER D-760558-E R.H.I.M. SCR. COIL (NOTE 2 ) - - - - - - - - - - , . P-1~351-A POINTER ARM. SHAFT A SSEM. ( NOTE 2) 2·5h BIND.H.I.M. SCR. "1 --PART OF BANK ASSEM. 4-40x¼ BIND.H.I.M.SCR. D·7"0Ei58·A AOJ. SCR.-D-7700-A HEX. NUT---' 3" 4·40Xih F.H.I.M. SCR. D-10,111-A ARMATURE spq. D·t09710·A 0ETENTST0P SPG) D-731415 ·A BRKT. (BASE MTG.) -BANK ASSEM. (NOTE 2) D·t0'-J7I2·A PAWL SPG.----- '----0·760498-A HEi.H.I.M,SCR. WIPfR ASSEM.(NOTE 2 ) - - - - - - ' ,.__ _ _ FRAME & BRKT,ASSEM.(NOTE 2) .____ _ _ _ _ SWITCM PC.NO.STAMPED ON BACK SIDE OF FRAME. NOTES:t·WMEN ORPERIN~ PARTS, SPECIFY PART NO. & NAME, 2-IF A WIPER ASSEM.,BANKASSEM, SHAFTASSEM.E.TC. IS REQUIRED, SPECIFY WIPER ASSEM. FOR PC. NO.OF ROTARY SW. TVPE44. EXAMPLE: WIPER ASSEM, FOR. 5W-51-ABCD, 0·731414-A BRKT. (SHELF MOUNTING) ROTARY SWITCH TYPE 44 DA. F.X.W- CHKO, /.T AUTOMATIC ELECTRIC COMPANV CM ICAGO, U. S.A, APP'D. L,A ~.....-1 TCI Library: https://www.telephonecollectors.info/ MD-189 ISSUE: \ HOW TO ORDER REPLACEMENT PAATS F'OR RELA.VS WHEN ORDERING PM.TS, SPEC\F'Y P-'RT NUM6ER A.ND NAME. THE INDWIDUAL PART NUMBERS OF SPRINGS M40 COMPONENT PARTS THAT GO TO BUILD UP SPRINGSCOMBINATIONS ARE NOT SHOWN BECAUSE MORE SATISFACTORY RESULTS AAE OBTAINED WHEN SUCl-\ COMBINATIONS ARE F"'ACTORY ASSE:NBLED WITH SPECIALLY PESIGNEt> SQUEEZING F'IX.TURE:S. THEREFORE, WHEN ONE OR MORE SPRINGS ARE WANTEO F"OR REPLACEMENT ON A RELAY, SPECIF"'Y THE RELAY NUMBER OMITTING THE COIL SUFFIX ANO ADDING SUFFI)(. "X~ FOR EX.AMPLE;WHEN SPRING REPLACEMENTS ARE WANTED ON A RE~Y 0-8\2.070-A,ORDE'R D-8\1070-)(.. THE COMPLETE SPRING COMBIN1'T\ON PROPERLY MOUNTEO ON THE MEEL PIECE WI LL THEN BE FORWARDED. SHOULD A. COIL BE REQUIRED, SPECIFY THE PART NUM&ER. STAMPED ON T\.IE SPOOL HEAD AT "THE A.RM~TURE ENO OF COIL,AS SHOWN IN PICiURE. SHOULD THE NUMBER BE OBUTERAiED~ SPECIF"Y COIL F"OR RELAY AND UST 'THE PROPER REL1'Y NUMBER COMPLETE. EXAMPLE; COIL FOR RELAY D-812070-A.. IF AN ARMATURE IS REQUIREO, SPECIFY NA.ME Of' PART FOR RELAY A.NO L1S1" 'THE PROPER RELAY NUM&R COMPLETE. EXAMPLE; ARMA,UtU: F'OR o~e,2070-A.. ...---8-32 x 5,, R.H.I.M. SCR. 16 D-76068-A PIVOT SCR. ASSEM. 0 COMPLETE RLV. PC. NOSTAMPED HER.E (UNDERSIDE CF MeEL PC.) COIL t>-760,8-A RESID. SCR. AR.MATURE RELAY ASSEMBLY MASTER SWITCH RELAY CONTAE TCI Library: https://www.telephonecollectors.info/ () ,. ~ ,., .0 i;; n I: rn w I -co ~ 0 APP'D. D·U.188-A IOPT. MALE JACK D-.42.174·A 12 PT, MALE JACK P.4'Jla8-A 8PT. MALE JACI< ~ -t n -~- 1) (/) -i :D 0 ,,......_m -i (/) )> ~ 16 10·3Z•j R.HJ.M.SC * e 10-12:~lRJf.LM.SCR.. D-1783-A WA!tHER 1 I (,•32 • 5'/1• R.H.I.M. 5GR.. D·l753·A WASHER ASSEM-* 0·30040-A GOVERNOR" DENOTES DETAILS ON RE.SPECTl'VE MD DRGS, I • 8-32• 4 R.H.I.M.SCR, 1 0·738~-A BRl<T. D-3~54·A STOP ASSEM. / SECT. A-A - 0-17060~ WA~HER P·1159·A WASHER 0·111629-A SPRING V-44808-A INS.WASWH FRA~E 4•3(.>1¾ R.M.I.M.SCR. r4·''"4F.H.t.M.scR. r- 0·10101\A TRIP SPRING '-MD-192. ..____ ~D- 81 I 11119 D·1142·A WASHER P-4447-A INS.WASHER D-44809~ INSULATOR (,·3Z)(} R.H.1.M. SCR, '-U-J:U::'_0•7(,0S·A BEARING SCR. Iii -~ o'!' . In '". z"" ~N (J) 8·32•¾ R.H.l.M.SCR. 4·36"¼-R,H.1.M.SCR. RES. COIL D·1705S·A NUT 10·32 •¾R.H.I.M.SCR. 10·32X 2 R.H.I.M,SCR. 1 D-281652-A SOLENOID A5S£M. D-5250-A SHELL ,----0-79239-A CORE ASSEM. 2.-WHENORDERING PARTS SPEClFVPART NUMBER &NAME. 3• IFA FRAME OR 8R.KT, IS REQUIRED, SPECIFV FRI\ME OR BR.KT. ~OR PC.NO, OF MASTER SWITCH. ElAMPLE: FR.AME FOR 1)·8121w·A MA5TfR 5WITGH. 1- NOT&S: )II •• 8•32w1 IUUM,SCR, 11 1>·73867-A BRl<T. D-77055-A NUT D--S421-A CORO HOLDER (,-32 x .! R.H.I.M.SCR. 6·32xj R.H.I.M. SCR. D· l152·A CORE STOP D·764'1·A SCR. I 6•32ir 4 R.H.I.M.SCR. :J~ D-42136-A !OPT. Fl!MALE JACIC 0·42.17,-A 12.PT. FEMALE JACK D••2t21·A SPT. FEMALE JACK &RACl(ET{NOTE 3) p.730411-A •z•eru,c;,T, MASTER SWITCH PC.NO. STAMPED HERE ® - © ~ != ii !" 0 > n . 0 D-73311-A STRAIGHT BRKT. Q)FRAME (NOT&3) ® : ® ~ - n ~ Q I: 0 -t C: z 0 TCI Library: https://www.telephonecollectors.info/ . "" I: ...- .., > ~ 1- P·-42.175-A 12 PT, MALE JACK BRACKET (NOTE 3) \.:;) D•730417·A''Z" BRKT. (0 ~ n J: I - t --t ..__ 0 ~ -t lJ -t u, --- u, CD -i 0 ,,, > ~ * I ;W, I ,II_ ~ I , ' -, ) "- P·170(,0•AWASHE e D•1759·A WASHER P·••3S6·A INSULATOR ~ D·l 1&62,-A SPRING 1 1)·3'!54-A STOP ASSEM. 4·?tf,x+ F.H.I.M.5CR. 4·36•1R.H.I.M.SCR. II ~ l ... -...... A~ ...• .,.111 ... ,. 6·32•ii, ~Jtl.M.SCR. ) D·130420·A 8RKT. 8·32•¼ R.H.LM.SCR. D-1742-A WASHER • 5 SECT. A-A I rt0·32lC1 R.H.I.M.SC.R. 0·5250-A SHELL D-7,239-A CORE ASSEM. ) l>-101073-A TRIP SP .... O-l0040·A GOVERNOR* ASSEM. '" 0·175~-A WASHER ". - •·32•.I R.HJ.M. . 1 1 r-"TJ _ 7 , '" M0·192 8-32 x ~ R.H.1.M. SCR. "·3 2. • 4I R.IU.M.SCR. P·1'4~1-A SCR. .--D-730418-A BA.KT, 16 6·32xJ. R.H.U,A,SCR. 6·32lCi ruu.M.SCR. 0·335~A SOLENOIOCORE STOP 1· DENOTES DETAILS ON RESPECTIVE MD DRGS. 2 · WHEN ORDERING P'-IUS SPECIFY PART NO. & NAME. 3 · IF A FRAME OR BRKT. IS REQUIRED, SPECIFY FRAME OR B~KT, FOR PC.NO. OF MASTER SWITCH. BXAM PL E: FRAMf FOR l)•S7444·A MASTER SWITCH. NOTES:- ~~~~05~'.i~H PC .NO. C, ~ ~ f7:\ D-42120-A 8 PT. MALE JACK t-:=:-1 \::!:..) P-42187-A 10 PT. MALE JACK I ) FRAME (NOTE l) ) r,:;;\ D·133 11·A STRAIGHT BRKT. 0 ~ I0 ! ! ~ 25 2 "O TCI Library: https://www.telephonecollectors.info/ ....., ,. 4- -5411111 NO. 1 CD - - - PC. NO, OF LINE SW. STAMPED MERE. 8-32.><¼ F.H.I.M,SCR. MALE JACK ASSEM. SELF ALIGNING PLUNGER ASSEM. 8·32,c! F.H.I.M.SCR. ROLLER BRKtASSE COIL.--....._. FRAMS i,.1'420~6,-A NO,PLATe HOLDER P-noo-ANUT NO'TES:- 1. WM~..., ORO!Al~G PARTS SPECl,-V PART NO. &. IIJN-1\E. 2. 1pr A FRAME, BRA.CK&T, MALE JACK ASSEM.,T~ST JACK, SPR UJ~ AssltM, ETC, IS REQUIRED, SPECIFY FRAME.' ETC.FOR PC.NO. OF' l-lNE SWtTCH. E)(AMPL&: F~AME FOR 0-87O12-A LIN!. SWITCH. LINE SWITCH (RIGHT) CONTAE TCI Library: https://www.telephonecollectors.info/ FM 1 • 3-4-54 mu• Mo., r:i'\ D-7~141-A 8-321'49/e4;;eRAS$ ROD ADJ.SCREW \V 0-16127-A 8-3zx39/io4 f3RASS ROD ADJ. SCRE.W D-"732f>O-A ROLLER &RKT.ASSEM. PC. NO. OF LINE SWITCH STAMPED HERE. - - - ~ I 8-32x 4 F.H.I.M.SCR SELF .C.LIGNIN"i PLUNGER ASSEM. 8-32:ic:1 F.H.1.M.SCR. 8 M0•81 (LARGE RLV.) COIL M0· 192 (SMALL R LY.) SPRING A5SEM. D-{.7147-A PLUNGER ASSEM. D· 54 20~6-A NO.PLATE HOLDER NOTES:1. WMENORDliRlNB PARTS 5PICIF'V' PART NO. & NAMI&.. Z.lf' A FAAME~BRACKeT, MALE JACK ASSEM.,TEt\TJACK. SPRIMG AS=,EM. ETC. IS REQUIRED. SPEC\FY FRA.ME ET~ FOR PC. NO, OF LINE SWITCH . e~AMPLE: FRAMi l'OR 0· 87S50-A L.INE SWITCH. LINE SWITCH CLEFT> CONTAE TCI Library: https://www.telephonecollectors.info/ FM-1377 S·l·S4 ISSUE NO. l FRAME{NoTE z)-.-4.=.-.... ,.,.__ _ _ _ _ 4-~, l(1 R.H.I.M.SCR. - - - - - - - 0-1710&-A WASHER D-10~0ICJ·A RATCHET SPRING---i• WIPER ASSEM(NOTE 2) o-,'767-A PAWl.GUIPE BLK. &·32."lRJU.M.SCR. D-1,n2-A SCR. SEARING PIN (NOTE3) T----41•I09103-A TENSION SPG.(OMARMATURI!) 0 4-3,•i¾,R.H.t.M.SC.R. ARMATURE ( NOTE 2.) POINTER ARM (NOH Z) SPRING ASSEM.(NOTE 2) ~~=~:-::J:-~D-13014CJ·A TENSION ADJ.BRKT. L...s=:~~""\..__ _ p.37152-A BEARING PIN ---D·76304·A SCR. ' 6·32",i F. HI. M. SCR. D·1&I33·A ARM.STROKE ADJ.LEVER ,.____ _ _ _ COIL FRONT VIEW LEFT VIEW NOTES~1-WHEN ORDERING PARTS SPECIFY PART NO,ANO NAME. 2-IFA FRAME, POINTER ARM,ARMATURE, COIL,WIP!R OR SPRING ASSEM. IS REQUIR.EI>, SPECIFY FRAME, POINTER ARM, ETC.FOR PIECE NO.OF R.OTAR.Y LINE SWITCH MOTOR. MAGNET. EXAMPLE: FRAME FOR P-8780~-A R0TAR.YLINE SWITCH MOTOR MAGNET, 3-IF A SEARi NG PIN FOR 6 LEVELS OR LESS 15 REQUIRED, ORDER D·hl0'll·A-1 FOR 7 LEVELS, ORDER 0·61O52-B) FOR 8LEVELS 1 0ROER 0·61052-A. I ROTARY LINE SWITCH MOTOR MAGNET CONTAE TCI Library: https://www.telephonecollectors.info/ FM-1177 4·"·54 RE~:ACE~ N"-~:s ,-.._ ~ 11 1( g 8 7 6 5 4 3 2 1 • * * • • • * * • * * * * • • * • * * * • • * * • * * * * * • * • * * * * • * * l lD • 1 1 * 2 • 3 4 * * * * * * * * * * * * * * * * * * * * * * * * * * * 31 32 32 * * * * * * * * 56 * * * * * * * * * * * * * * 67 * * * * • * * * * * * 8 * * * • 88 • * • * * * * * * * * * * * * * * * 109 * * 11 * * * * * * * * * * * * * * * * * * 12 * * * * * * * * * * * 13 * * * * * * * * * * * 14 * * * * * * * * * * * * * * * * * * * * * * 1165 * * * * * * * * * * * 17 * * * * * * * * * * * 18 * * * * * * * * * * * 19 * * * * * * * * * * * ~ * * * * * * * * * •* 20 * * * * * * * * * * • 21 22 * * * * * * * * * * * * * * * * * * * * * 23 • * * * * * * * * * * 24 26 * * • * * * * * * * * 27 * * * * * * * • * * * 29 * * * * * * * * * * * * * * * * * * * * * * 30 * * * ~ f"OR MASTER DRG. SEE MD-176 GROUP 1- 27-S4 ISSUE N0.4 * * * * * * * * * * * * * * * 33 * 34 DESCRIPTION PC NO D-10614-A DOUBLE DOG SPG. 0-10716-A DOUBLE DOG SPG. D-109978-J RLS ARM SPG. D-1724-A WASHER{ROT PAML STOP&o.o.SPG. D-17268-A FELT OIL WASHER - SHAFT D-19324-A COVER GUIDE POST{OFF NORM SPG' D-3306-A FRONT ROTARY ARM STOP D-3377-A FRONT ROTARY ARM STOP 0- 3456-A STATIONARY DOG D-3457-A DOUBLE DOG D-3478-A DOUBLE DOG D-34011-A DOUBLE DOG D-3775-A BEARING PIN ROTARY ARM D-3776-A BEARING PIN VERT ARM D-37007-A BEARING PIN DOUBLE DOG D-46219-A SHAFT FELT OIL WASHER HOLDER (BOT) D-6388-A HEEL P1ECE(VERT ROT MAG) D-67111-A LOCKING CAP D-73160-A CLAMP BRKT(ROT ARM) BOT D-73161-A CLAMP BRKT (ROT ARM) TOP 0- 73162-A CLAMP BRKT(DOUBLE DOG&VERT ARI-' D-7615-A SPG.ADJ.SCR.(ROT & VERT ARM. D-7616-A FRONT ROT ARM PAWL ADJ SCR. D-7617-A FRONT ROT ARM STOP ADJ SCR. D-7633-A SCR-ROT ARM BACK STOP D-76297-A MAG.ADJ SCR (ROT & VERT MAG} D-76314-A HHIMS (ROT & VERT MAG) D-76552-A HHIMS(DD CLAMP ROT & VERT ARM CLAMP) D- 7 60 684-A SHAFT BEARING SCR. D-7700-A NUT 6-32X3/16 RHIMS(DOUBLE 000 SP~ 6-32X1/4 RHIMS(ROT PAWL STOP & RLS MAG.) 8-32X1/4 RHIMS-STATIONARY DOG 8-32X3/8 RHIMS (RLS t;1AG BRKT) 8-32X1/2 RHIMS(RLS MAG.& ARM. SPG BRKT) D-17392-E 8 LOCKWASHER (GUIDE POST) 0- 760704-~ HHMS (VERT ARM CLAMP) . ,.-.__ ~ COMMON PARTS S TOCKL I ST FOR STROWGER SWITCHES AUTOMATIC ELECTRIC COMPANY CHICAGO, U. S. A. ci l. Q. < AW.&. I.J .H.R-S. I I ICHK.G.H-TMD-21970 SHEET 1 TCI Library: https://www.telephonecollectors.info/ - - · - ~ ~ - -------- {..13-2.9 ISSUE.~ 2 "7-30-43 ,EORI\WN: 1LOiRACING NORN- i.M., D ·1l:, ?>03- A BE.~R\NG SC.REW S.M.H 5~:;3 2-SoX 1/4"' RH .SR.M . SCR. 2-56X3l1b"' R.H.BR. .M .SCR. D -t.4030 -A WORM ASsE.N\SL'( 0-37021-A PIN O-3O11 - A FRAME 0·10\03-~ BE.ARING, b-32X l/4"R.I--\.\.M . SU\. MASTE.R SWITCH GOVE.RNOR ASSE.M. : ,_,,..-...,, .! t. JA8 r'o C:,/10/2.s A\JTOMAT\C ELE.CTR\C C.OMPAN) CJ-\\ C P. GO. \.).S A.. f\PP'O T .E. M. L . MD-30040 TCI Library: https://www.telephonecollectors.info/ I 9-30-38 15SUI:: 7 5-19-43 RETRAC.EO