Category: Service Bulletin

Customer Service gi/Zr/Go SERVINICFEO RMAllffi Motorcycle R 75/5 Group: engine Supplement unich, Nov. 70 O, 3/70 (281)e~: Ref.: Carhurettora Dear Sirs, Messrs. Bing have altered the designation of ihe eg~ipression carburettors. Against the indication in S,I. No. 3/70 (281), in the Owner’s Manual and in the Wor’k shop Manual it muat read: carburettor Bing left side 64/32/3 carburettor Bing right stde 64/32/4 The ordering Nos. remain unaltered. Youra very truly, BAYERISCHEM OTO.REWNE RK.E Aktiengrsellachaft p_pa. .1… v. /iJ ,. I ‘ .• ‘t/ / / n ! Dellesks Benn:ewi tz Kenntnts genommen • Pris connalssance – Noted – Tomado nota…

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Customer Service New Jersey,Nov.1969 No l 69 (273 Subject: Valve Timing Gentlemen: The valve timing information given in the owners manual and repair manual is in error. The valve timing is measured with a valve clearance of 2 mm. It is as follows: RS0/5 and R60/5 Intake opens TDC Intake closes 40• after BDC Exhaust opens 40• before BDC Exhaust closes TDC R75/5 Intake opens 10• before TDC Intake closes so• after BDC Exhaust opens 50° before BOC Exhaust closes 10• after TDC Please correct the owners manual on page 56 and the repair manual on page 11-06 accordingly. Bayerische…

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SERVIINCFEO RMATIO\\ -‘l’ocih, C us t. V3-201 • Service Gi/Zr Motorcycle R 75/5 Munich~ N:bv7. 1 l-_I Ref,: Vacuumtype carburetor Gentlemen, At our mode’ ls R 75/5 ex chassis No. 2 977 320 we install’ vacuum type carburetors with the designation 64/32/9′ ‘r ·.~ (left) and 64/32/10 (right), The idle system works inde,-· pendently from the needle system through lifting of the . lower final position of the diap_hragm and the alteration of the by-pass-bore. The bore of the idle nozzle has been, enlarged and the needle nozzle throughput has been reduced, With the new carburetor the i-dle adjustment and,…

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Service-Information ii!,iJ BMW MOTORRAD GMBH Mo.torcycles R90/6 – R90S Techn. Kundendienst ! Munich, June ‘197, R-VK-11 ma/ur .. Group: Engine 11 006 78 ( 1045R) -For U.S.A. and Canada Only- Subject: Cylinder Head Locating Dear Dealer, Starting with R 90/6 R 90 S V. I .N. V~I.N. 4 961 244 4 980 480 the countersink in the cylinder head and locating sleeve in the cylinder barrel Part No. 11 11 l 258 311 are no longer manufactured. At the same time, the head gasket corresponding holes were reduced to 10.5 – 11 mm diameter, all 6 holes are therefore identical.…

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SERVINICFEO RMAllO~ ·Tech.Cust.Service R50/5,R60/5,R75/5 vs-201 Fm/Zr ( ) Ref.: Spiral gear (speedometer drive) Dear Sirs, Starting with chassis Nos. 2 903 617 – R 50/5 2 938 592 – R 60/5 2 982 663 – R 75/5 we ins.tall between the upper starting surface of the s.piral gear, parts no. 1-1 -31 1 250 187, and the radial sealing ring, parts no. 11 31 1 256 563, a washer,·parts no. 11 31 1 256 928. • By this a damage of the sealing lip of the radial sealing ring is avoided when.the spiral gear moves up while coasting with the…

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SERVICE SERVICE BULLETIN 78-4 BUTLER & SMITH, INC. NORWOOD, NEW JERSEY 07648 COMPTON, CALIFORNIA 90224 ALLOY EXHAUST NUT Group 11 – Motor At times a problem of galling exists between the exhaust threads of the cylinder head and the threads of the exhaust flange nut. In every instance the problem can be identified before extensive damage is done to the threads of the cylinder head. STOP: ….. as soon as you realize something is not right. It is possible to correct the situation now without further and permanent damage to the threads. The exhaust pipes can be removed from the…

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( ( Service-Information $ BMW MOTORRAO GMBH Motorcycle R 50/5-R 100 RS Munich, March 7 8 Service Technical R-VK-11 da/ur Group: Engine 11011 78 ( 1061R) – For U.S.A. and Canada Only – Subject: Engine Oil Circulation Dear Dealer, In a few instances low oil pressure was found on our enqines. The service person must locate and repair this situation before component damage occurs. The following list will help you to isolate and correct the problem. A. B. Problem Telltale lamp stays on Low oil level Oil pressure sensor switch defective Cure Refill to correct level Replace switch If not…

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SERVICE SERVICE BULLETIN2-78-5 N BUTLER & SMITH, INC. NORWOOD. NEW JERSEY 07648 COMPTON, CALIFORNIA 90224 Piston Ring Seating – /5, /6. /7 Models Group 11 – Engine Many problems may be attributed partially or wholly to improper ring seating. Blow-by of gases past the rings will cause excessive crankcase pressure, which will be manifested as excessive breather “chirping•· rear seal leakage, rapid oil deterioration and oil consumption, i.e. oil being passed out the breather and burned in the right hand ·combustion chamber. Ring seating is also critical to proper compression, loss of which will result in lack of power and…

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( Service-Information & – BMWM OTORRAGDM BH Motorcycles R80-R100RS Munich, Jan. 7E Service Technic R-V-K-10 vdw/mi 11·005 78(1040R For U.S. and Canada only Subject: Maintenance of the Exhaust Emission Control System Ladies and Gentleme11, The motorcycles manufactured by BMW after 1/1/78 are subject to the regulations issued by the United States Environmental Protection Agency. Among other measures to be complied with by our company the BMW dealer network will have to perform some new important tasks. In the following we have listed the most important items. Above mentioned regulations should help to moderate the nation’s air pollution dilemma. We urge…

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I , Service-Information RMW Motorrad GmbH 1 Service Dept.Kl/Kr/Nab Motorcycles R60/6 US – R90S qs Technical Information Group: 11 – Engine Munich, Jan ’75 2/75 (164 M) e Re: Flywheel mounting /6 models Gentlemen: In order to improve the bolted connection between the crankshaft and flywheel, the thread has been enlarged from M 10 x 1.0 to M 11 x 1.5 providing ample safety against loosening also for our 900 cc engines. This change was made effective for series production as of chassis nos. BMWR 60/6 us – 4 920 662 R 75/6 us – 4 940 406 R 90/6…

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