Category: Service Bulletin

( Servic e-1n fo rmation BMW Motorrad GmbH Motorcycles R60/6 – R90 S Munich, Dec ‘7’: Service Ett/rnk/fm Technical 1 / 7 5 ( 2 0 4 ~11) ‘= •——————-·- —-Group–2-3– —– Subject: Connection between universal shaft and gearbox – torque values changed The torque of the four 12-sided bolts on the drive shaft coupling has been increased from 25+3 Jrn (2,5 + J.O mkp) to: 33+4 Nm (3.8 + 0.4 mko) The quality of the bolts is of such high standard that it allows the increased torque specifications. In this connection, we also refer again to the BMW servi

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…. Service-Information BMW Motorrad GmbH , Motorcycles R60/6 US – R90S Up Munich, Jan. , 75 ! Service Dept. Kl/Kr/Nab;Technical Information , 2/74 (1.63 M) e • Group: 23 – Gearbox ———‘——- Re: Shifting the 5-speed Gearbox Gentlemen: If pawl spring number 23 31 1 231 619 breaks, the O.D. boss of the segment number 23 31 1 231 578 should be reduced fro~ 16 mm /0.6299″ to 15.5 mm/0.6102 11 • The reason for this spring failure ist the too large diameter boss which is soldered into the segment and which houses the spring. In case of complaint, we…

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( ·service-~r1formatio&n Tech.Cust.Service VS-2011 kl/tw/fm Motorcycles R60/6 – R90 S Group: 23 Subject: Tightening Torque of Driving Flange Gentlemen: Munich. May ’74 1/74 (119 M) e To permit a higher torque to be transmitted here as well as from the series commencement of the /6 models 1 the output drive shaft/driving flange bevel ratio has been modified from 1:6 to 1:7. The tightening torque is 20 + 2 mkp for the 1:7 bevel ratio and 22 + 2 mkp for the 1:6 bevel ratio. So that no confusion can occur during repair. a list of the components concerned is given…

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L r·, ~————-.—————–,———-1( Tech.Gust.Service VS-201 kl/LP/st Motorcycles R 50/5 – 75/5 Group 23: Gearbox Munich, June ’73 No. 1/73 (072M)e Ref: Gearbox oil level Dear Sirs, We would advise you to maintain the prescribed oil level in the gearboxes of our motorcycles, as too little oil could result in the premature wear of the bearing bushings. Please ensure at each service that the oil level is at the lower thread of the filler hole – if necessary, top up with branded hypoid gear oil SAE 80 or 90 according to ambient temperature. Yours faithfully, BAYERISCHEM OTORENW ERKE Aktiengesellschaft ppa. i.…

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( ( Service-InformationM otorcycle BMW NA Service Department Group: 23 Gear Box June, 1992 23 009 92 (2442) Gear Box Output Shaft Seal – RIOOGS/PO/MRo dels For USA Only With the introduction of the BMWPa ralever rear swing arm, the gear box output seal was revised – P/N 23 12 I 338 514. (Review S. I. 00 053 88 – September, 1988). The seal is a new pattern which must be pre-shaped before installation or it will be damaged by the speedometer drive gear. Install this seal dry, with the contact surface of the seal tapering inside, to accept insertion…

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Service-InformationM otorcycle BMW of N.A. Service Department Group: 23 Gear Box June 1986 23 008 86 (2217) For USA Only Changes in 5-Speed Gear Box — Boxer Models Information: Very truly yours, The gear box output shaft no longer has the circlip groove machined into it. Through the use of a new style bearing, the circlip [21 and spacer [31 are no longer needed. ( The ball bearing [ 4] inner race has changed in shape. Note: It is acceptable bearing on older output circlip and spacer. to use this new style shafts and not use the BMW OF NORTH…

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( Service-InformationM otorcycle- –~.:- ·-·~~:-.~–:’;- :,… ·- · · ·,-,._. · …. ·– .r· :·-.·- ·•· · · …> ·:~..- .: -,.·. : ~.. ; .;.:~. ~~:~~;,.:;•.-···=:-,.:.·.-.~–:;.->_·-.–,-:”-:.•.;?,·.·,_.·:t::·.:,-?·.~·.: \•-~ i-:~~ :.- Improved Input Shaft Drive·Gear — 17.5°· Helicat’·Gears/’ (Boxer 5-speed Gearboxes) :.- . …….., Information: To strengthen the input shaft gear, the following items have been redesigned: Part: -P-a-r-t No.: input shaft 23 21 2 302 327 input shaft gear thrust piece counter piece kick starter gear complete shaft without kick starter gear complete shaft with kick starter ge~r 23 21 2 302 326 23 21 2 302 325 23 21…

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( Service-Informatio&n Group 21 CLUTCH RE: CLUTCH Dear Dealer: April 1983 Bulletin No.: 21 003 83 (2074) I i i-~. .. , Comprehensive modification has been\:i:t£-raduced in the clutch area: -~–:…_-~ ··””.,: ………. ~_”•1 • 1. te has been comp edesigned to e loads-.·-:-·.:-“‘”-‘-··” :·:,.-:·. • New part No.: 21 21 1 451 512. This clutch plate is interchangeable on all models since 1981. Please route and initial before filing 111 .. ‘. ……. __ p_ –··· •. – 2. Clutch carrier The clutch carrier also has been strengthened. New clutch carrier part No.: 21 21 1 451 511. Former…

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( ( Service-Informatio0n Group 21 December Bulletin No.: CLUTCH SPLINES 1982 21 003 82 (2064) – For U.S.A. and Canada Only – RE: CLUTCH SPLINES Dear Dealer: To maintain constant efficient clutch action and longevity, the clutch and input shaft splines should be inspected, cleaned and lubricated during each service or at least once a year. Yours truly, i r;rH AMERICA, INC. ~Neas National Service Manager HN/cs Please route and initial before filing

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r ! Service-Informatio&n Group 21 August Bulletin No. Clutch 1981 21 002 81 (2037) – For U.S.A. and Canada Only – Subject: Fitting 1981 Clutch System On To Pre-1981 Models. Dear Dealer, This new clutch system can be installed on all 5 speed gearbox mode 1 s . ( / 6 & / 7 ) The only major obstacle you may encounter is the drilling and champhering of the clutch end of the crankshaft to accept the longer 1981 clutch rod if this essential modification is not evident. (as per enclosed drawing) • –· THE FOLLOWING PARTS· ·-ARE REQUIRED: QUANITY…

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