Category: Service Bulletin

( ( I Service-~n fc ~rmation Tech.Gust.Service VS-201 lo/int/fm Motorcycles R75/6-R90/S Munich, Dec ’73 I Group):Brakes,Wheels & Tires 6/73 (092 M) e 34/36) I Re: Disc Brake on /6 Models Dear Sirs, A single front disc brake is fitted as standard equipment on the BMW R 75/6 and R 90/6 and a twin disc brake on the R 90 S. The R 75/6 and R 90/6 can also be equipped subsequently with a second disc brake (at extra cost). We would like to give you the following instructions in respect of disc brake maintenance: 1. Adjustment of front brake Adjustment…

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SERVINICFEO RMATION(‘ Tech.Oust.Service VKT 20 Gi/Zr Motorcycles R50/5-R75/5 group:brakes,wheels,tyres Munich, July 70 No. 1/70(286)e. Ref.: Rear Wheel Brake Dear Sirs, when the rear wheel brake is pumping during operation (noticable~ by the slightly up and down going foot brake pedal) and eventually also if you hear a squeeking noise, the reason of this is an untrue brake drum. For the correction of this take up support wheel hub in the axle center and turn-off as fine as possible. nominal dimension of inner diameter of brake drum max. permitted run-out between brake drum surface and axle .max. permitted turn-off dimension 200…

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/ / S~,,r-vice-lnformatiMono torcycle • –~ ,1_”‘< .:- ' • l(~ BMW of, N.A. ' r Service Department Group: 34 Brakes July 1986 ., 34 010 86 For USA Only (2220) Brakes Squeal ..:: All r . Model~ Information: This Service Information bulletin is being written to • provide all authorized BMW motorcycle dealers with accurate information concerning brake squeal. The design of the BMW brake system utilizes friction materials developed for performance under a wide range of operating conditions (hot:and cold temperatures, etc.). The chemical structure of every brake pad or shoe changes with age and temperature. Due to…

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( ( 1.__, Service-InformationM otorcycle BMW of N.A. Servlce Department Group: 34 Brakes,· ·, March 1985 ,-,34 008 85 …,. _,-,., (2148) 1985 R80 & R80RT Double Disc:fEront Brakes ,,, • “l• For USA and Canada Only Two types of front disc brake systems will be delivered on U.S. models of ~he motorcycles named above. 1.) Double discs with two (2) rubber hoses, on to each caliper; and 2.) Double discs with one (1) rubber hose to the left brake caliper and a pipe from the left caliper to the right caliper. Both systems will accept engine protection bars; however,…

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( ( .., Service-InformationM otorcycle BMW of N.A. Service Department Group: 34 Brakes August 1984 34 007 84 (2119) BRAKE SHOES AND PADS FOR R50/5 – RlOORT For USA and Canada Only In order to maintain brake efficiency, brake lining compositions have been manufactured for individual Boxer and K models. Brake lining/pads should not be exchanged at random even though the outside measurements are the same. When brake linings/pads are replaced, you should comply with the instructions in the parts fiche or the attached table. Sincerely, BMW OF Richard Dampf ~ / National. Technical Motorcycle Group RD/vaa Attachment Manager Motorcycle…

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Service-Informatio&n Group 34 April Bui:letin No. : Brakes 1984 34 006 84 – For U.S.A. and Canada Only – RE: PULSATING REAR DRUM BRAKES Dear Dealer: It has come to our attention i’n isolated cases of owners complaining· of pulsating rear drum brakes. ( 209 2) Even after all tolerances of the rear wheel brake drum are met, pulsating of the foot brake pedal can be felt. Generally, this is caused by a slightly uneven contact of the brake shoe and the brake lever cam. Filing down the contact surface of the lower brake shoe where it touches _the brake…

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( ( Service-Informatio&n Group 5 April Bulletin No. Technical Service 1984 I/84 (2098) Information Bulletins -For U.S.A. and Canada Only- RE: ANNUAL BRAKE FLUID CHANGE PROMOTION Dear Dealer: We all know that brake fluid changes are often neglected. A reminder of this is also found in every Rider’s Manual as following: “Brake fluid is hygroscopic and is thus capable of absorbing moisture from the atmosphere over a considerable period of time. To ensure that brake systems remain fully reliable, brake fluid must be replaced once a year. Never recycle used brake fluid. Use only OOT_4 fluid from a _seale

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( ( Service-Informatio&n Group 34 March Bulletin No. Brakes 1984 34 005 84 (2091) RE: BRAKE FLUID – For U.S.A. and Canada Only – Dear Dealer: Experience has shown that although brake fluid is important to safety, it does not always receive the suggested attention or replacement. In order to meet the high standards of brake fluid, (which is regulated by the Department of Transportation) Glycol is used as a basic element in the manufacturing of DOT 4 brake fluid. Glycol is hygroscopic (i.e. it can absorb moisture). When the water contents in brake fluid increases, the boiling point of…

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( ( ··•··•·-“·••·•••.• … .., ………….. ..-, ……….. •••.••.o ……. • .. •••••~,. …………. , .. .-.r., .. ~ .. •.-.,,., .• ._,~,.-. ••··• • • • , …. ,,. -• •n~ …………. _., ···.,- •,- •• ~ •• •••·•· ,.~~-···•·•.,•••· ••· .,,. •• , Service-Information$ Group: 34 February Bulletin No.: BRAKES 1983 34 004 83 (2071) – For U.S.A. and Canada Only – RE: Bleeding Rear Disc Brake on BMW Rl00RS and Rl00RT Dear Dealer: In some cases, it has proved impossible to bleed the rear disc brake completely. You are recommended to detach the rear brake caliper and…

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Service-Informatio&n Group: 34 November Bulletin No.: BRAKES 1982 34 003 82 (2063) – For U.S.A. and Canada Only – RE: FRONT BRAKE DISK MOUNTING Dear Dealer: It has come to our attention that in isolated cases the the mounting bolts of the brake disk to the wheel become loose. NOTE: THIS OCCURS ONLY ON SINGLE FRONT DISK MODELS Therefore, may we ask you to, in addition to all normal inspections or on pre-delivery service, to inspect the 5 mounting bolts of the brake disk. In case you find loose screws, please replace the washers (Part No. 34 11 1 240…

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