Category: Service Bulletin

Service-lnformation ($1 BMW MOTORRAD GMBH Motorcycles RS0/7-Rl00RS Munich, June 78 Techn.Kundendienst Technic R-VK-11 ma/ur Group: Engine 11 007 78 (1047R -For U.S.A. and Canada Only- Subject: Piston and Wrist Pin Changes Dear Dealer, On all Rl00/7, Rl00S and ‘Rl00RS, starting with R 100/7 R 100 S R 100 RS V.I.N. 6 146 670 V.I.N. 6 162 563 V.I.N. 6 182 548 and all R 80/7 since the introduction of this model. The piston design was improved, the circlips are now secured to the wrist pin (external) instead of the inside of the piston (see attached pictures). The dome shape was…

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( Service-Informatio&n Group 11 October Bulletin No. Engine 1980 11 018 80(2029) – For U.S.A. and Canada Only – . Subject: Measurements for Plain Bearings in Engine Block and on Crankshaft Apart from other factors, the life of an internal combustion engine using plain bearings depends to a great extent on the specified main and big end bearing play tolerances being maintained. These are optimized at the production stage. If bearing clearances were to be too small, bearing seizure would occur quite rapidly and the engine would break down. If the clearances on the other hand were too_large – particularly…

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( ( Service-Informatio&n Group: Engine September 1980 Bulletin No.: 11 017 80(2026) – For U.S.A. and Canada Only – Subject: Maintenance of Emission Contr.ol Systems – 1981 Models Applicable emission standards for the 1981 motorcycles amount to 5 g/km HC and 12 g/km CO. The pulse air system, introduced in 1980, was improved by an automatic vacuum switch-off to avoid backfiring when closing throttle. No maintenance is required for this system. Idle speed and idle mixture adjustment does not differ from the 1980 model procedure. All 1981 model motorcycles are equipped with an electronic ignition system without breaker points. Misadjustment…

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Service-Information$ Bulletin No. : Group: Engine September 1980 11 016 80(2019) – For U.S.A. and Canada Only – Subject: Fitting of BMW Oil Cooler Kit to R 50/5 – R 90 S The BMW oil cooler kit, Part No. 11 42 1 335 396, can be retrofitted onto 1970-1976 model BMW motorcycles by the following procedures: Refer to the corresponding diagrams for clarity. BMW parts required: Description Oil Cooler Kit Filter Canister Sleeve B.MW Part Number 11 42 l 335 396 11. 11 1 263 ,343 Quantity 1 1 1. Drain

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Dear Bill; April 2, 80 Oak ~ (l).nd.,:,.,.- Sefa….,:t-€M..” 1\1~J Enclosed is a dozen or so copies (pre-publication) of the May issue of the BMW News covering the oil seal le;:ikage problem, octane boosters, and cylinder shim conversions. Pages 7 through 17 cover the cylinder shim conversions. Pages 16 and 17 cover the part about what is recommended for the dealer servicing. Page 10 tells about your shim conversion kit and where to get it etc. Now in relation to the letter from Joe Smart on page 7, I am enclosing graphs made up for the 1970 through 1979 machines…

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( 1 Service-Informatio&n Group 11 February Bulletin No. Engine 1980 11 015 80 (2017) – For U.S.A. and Canada Only – ·subject: Irnpr~ved Rear Main Engine Seal The introduction of the new Viton rear main engine seal, Part No. 11 11 1 335 654 requires additional procedures and care in installation to insure proper operation. This new seal is now available through normal parts channels. It is also used in motorcycle engine production as standard equipment starting with the following V.I.N. numbers: R 65 6 381 434 R 80/7 6 126 106 R 100 T 6 170 406 R 100…

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Service-Informatio&n Group 11 February Bulletin No. Engine 1980 11 014 – For U.S.A. and Canada Only – Subject: Sealing Cap for Chain Tensioner Bore – from model year 1979 with hydraulic chain tensioner. 80 (201,5) To prevent any risk of the sealing cap falling out of the bore in which the hydraulic chain tensioner piston and coil spring are located, the cap will in future be secured by punch marks at two points (see drawing overleaf). If you have to perform any repair work on these motorcycles, please check whether the punch marks have been provided. If not, secure the…

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Service-Informatio&n e Group 11 February Bulletin No. : Engine 1980 11 013 30(2013) – For U.S.A. and Canada Only – Subject: Valve Clearances on R 65 – R 100 RT The following are correct valve clearances, updated, to give the best possible performance: R 65 Inlet: – 1000 km (600 miles) = 0.15 mm (.006″) + 1000 km ( 600 miles) = 0.10 mm (.004 11 ) Exhaust: 1000 km (600 miles) = 0.25 mm (.010 11 ) + 1000 km (600 miles) = 0.15 mm (.006 11 ) R 80/7 – R 100 RT .. ,’;!- -… Inlet: –…

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( Service-Informatio&n Group 11 Engine October 1979 Bulletin No. 11 012 79 (2006) – For U.S.A. and Canada Only – Subject: Maintenance of Emission Control Systems for 1980 Models The emission values for our 1980 model motorcycles amount to 5 g/km HC and 12 g/km CO. To obtain these emission values the Pulse Air System has been created and incorporated in our 1980 models, in addition to changes already made in 1978 and 1979 models. This system draws air from the intake air cleaner housing to the exhaust port of the cylinder head shortly behind the exhaust valve. Engine performance…

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i I ‘\ t ( 1.1 ,, ;} -,~ ·• ‘·1 I I ) i ‘·’ SERVICE SERVICE BULLETIN ll-79-13NS BUTLER & SMITH, INC. NORWOOO, NEW JERSEY 07648 COMPTON, CALIFORNIA 90224 CYLINDER BASE SPACER ON EMISSIONS MOTORCYCLE Group 11 Motor BMW is happy to announce that we now have the approval of the Environmental Protection Agency for the use of Cylinder Base Spacers on BMW models manufactured after January 1, 1978. This approval means the cylinder base spacers can now be installed on the emissions controlled models to reduce compression and allow the use of leaded regular gasoline. For complete…

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