Tag: group 11 service bulletins

L SERVINICFEO RMAllO~ Tech.Oust.Service VKT 20 gi/zr/hn Motorcycle R 75/5 group: engine Mu.nich, Dec. 1970 No. 5/70 (284) L Supplement 2 Re,: Advanced constant preseion C9rburetor Dear Sirs, The refitt.ing of the @onstant preesion carburetors of model R 75/5 until chassis No, 2 972 061, started by S.I. 5/70 (284), has not yet been effected to all engines, though enough refitting kits are available, We point out once again that all engines concerned have to be ( transformed as soon as possible and we order our field engineers to control this action. All engines have to be transformed immediately, Yours…

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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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SERVIINCFEO RMATION 8rvice Promotion Advising on equipment problems Milnchen, Sept. 1970 KT-30 Kl/St n. 11/70 (257) en. ( Subj.: Oil pressure gauge f’or r..1otorcycles BHW R 50/5, R 6075, R 75/5 Dear Sirs, When the engines of the miot.orcycles show deficiencies which presumably result from insufficient lubricating or, after bavin~ reuaired the engine, we recommend to check the oil pressure .. For this purpose, a. commercia.l size pressure gauge with a measuring ra.nge of O – 114 or 142 psi is a.ppropiate. The pressure gauge can be connected on the blind plug M 10 x 1 below the contactor for…

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SERVINICFEO RMAllm – Techn. Cuet. Service Motorcycles R50/5,R60/5,R75/5 Group: Engine MUncb.en, Sept. 1~ VKT-20 Fm/Wi/St n. 8/70 (289) en. Subj.: Oil leakages around the chain case cover Dear Sirs, On a limited-numb~r of motorcycles the three studs to seeure tb.e chain case cever have been installed with Curil, instead of Loctite. Only on these machines it h.a.s been stated in r…avoi·a.l cases that oil leaks out, especially through th.e two upper holes of the studs . .•., . To step the trouble, remove th.e chain case cover (see ( workshop manual, pages 11-14/1) and, operating from below, apply a 2…

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0 0 () ~————-r—————,r——-\ (-\ Tech.Cust.Service vs-201 ga/LP/tm Motorcycles R50/5 – 75/5 Group ll: Engine Munich, July ’73 4/73 (082M) e Re£: Automatic centrifugal advance Dear Sirs, It has repeatedly occurred that the M6 nut securing the centrifugal advance unit is torn ott as a result of over-tightening. Since it is not immediately apparent that this nut is cadmium-plated (M6 DIN 934-8 CD), a tightening torque of 0.6 – 0,7 mkp (4,3 – 5,l tt/lb) is specified, Please observe this torque figure to obviate further complaints. Yours faithfully, BAYERISCHEM 0T0RENW ERKE Aktiengesellschaft ,,;- ppa. _…./’N . a- • ( Kennt~is…

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u ( Tech.Cust.Service vs-201 ga/LP/fm Motorcycles R50/5, 60/5, 75/5 Group 11: Engine Munich, June ’73 No. 1/73 (073M) e Ref: Engine with lower compression – BMW R50/5 – R75/5 Dear Sirs, To prevent the occurrence of “pinking” in countries with low octane fuel, our motorcycle models /5 are now available (since January ’73) with engines having a lower compression figure. They can be ordered at the same price as normal models quoting the Code No. 45.l. The lower compression is obtained by using a cylinder base gasket 1.2 mm in thickness. This reduces the compression as follows: R60/5 R75/5 from…

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u Service-Information6 \ Tech.Cust. Service Munich, Dec ’72 VS-201 na/zr/fm Motorcycles R50/5 – R75/5 Group: Engine 1 o- 1/73 (056 M) e Ref: New automatic centrifugal advance Dear Sirs, With the installation of a new automatic centrifugal advance unit on the models R 50/5 as of Chassis No. 2 905 857 R 60/5 as of Chassis No. 2 946 096 R 75/5 as of Chassis No. 2 996 220 the tendency to “knocking 11 of the engines has been reduced so that even fewer problems will be encountered in countries with a lowquality fuel. The centrifugal advance curve rises flatter…

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( ·service-InformatioGn Tech.Cust.Service VS 201 LP/sta/fm Motorcycles R50/5, R60/5 R75/5 Group: Engine Ref: Rocker arm bearing supports Dear Sirs, Munich, Nov 72 5/72(043 M) e To suppressnoise which can occur if there is too much play on the rocker arm, slotted rocker arm bearing supports (Order No. 11 12 l 250.?37) used in conjunction with a hardened thrust washer (Order No. 11 33 1 257 825) have been introduced in series production upwards of Chassis No. 2 904 721 for the model R 50/5 ti II 2 942 632 If ,, Tl R 60/5 ” IT 2 989 472 ”…

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Tech.Customer Service VS 201 gi/Zr/fm Motorcycle R50/5, R60/5, R75/5 . \ Munich, Nov 72 4/72 (041 M)e Group: Engine Ref: Automatic ignition timing mechanism (centrifugal advance) Dear Sirs, In order to obtain for all three motorcycle models optimal performance points in the ignition advance, we have installed a new automatic ignition mechanism as follows: R 50/5 upwards of Chassis No. 2 901 787 R 60/5 upwards of Chassis No. 2 932 689 R 75/5 upwards of Chassis No. 2 973 307, Bo•ch No. (identification mark) previous,1utomaticti ming mechanism 023 202 005 newa utomatict iming mech.:rnism new automatic timing mechanismw ith…

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I Service-Informati$o n (‘ ,.,,,,.,.,._.,-rr,;–…=-~e”r”v–1r.c.:e;;–==o:;;r”‘c”‘y”cc,-;e”s.-,=-“f”T,,-cr7’7,=——-,M”M=:::n:::a:c-:1;:rr:-::c::c:-c.h::.h:-:,- —.;gi/mi R 5/5 3 72 (006 m)e G oup: engine – crankshaft Ref: Crankshaft Dear Sirs, In order to reduce the possibility of damage to the drive when the engine is greatly overloaded the fatigue strength of the crankshaft under repeated bending stress has been increased at the following models R 50/5 upwards of chassis no. 2 964 190 R 60/5 upwards of chassis no. 2 940 740 R 75/5 upwards of chassis no. 2 985 208 by taking the following steps. 1. Change over to different material, from CK 45 N to 41 CR4…

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