Tag: group 11 service bulletins

L SERVINICFEO RMAllOK’ Tech.Oust.Service VKT 20 gi/zr/hn Motorcy~le R 75/5 group: engine Mu.nich, Dec. 1970 No. 5/70 (284) L Supplement 2 Re .. ~ Advanced constant prest!ion C’9rburetor Dear Sirs, The refitting of tbe eonatan.t prees1on carburetors of model R 75/5 until chassis Noe 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 aa soon as possible and we order our field engineers to control this action. All engines have to be transformed…

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f ‘( SERVIINCFEO RMATION Techn. Customer Service Motorcycles R50/5,R60/5,R75/5 Group: Engine Mlinchen, July 1970 VKT-20 Fm/Wi/St No. 7/70 (288) en, ( \ Re: Through-bolt sleeves pressed into cylinder bead Dear Sirs, In order .to avoid oil leakages between cylinder head and through;…bol t sleeves in case of unfavorable machining tolerances, new through-bolt sleeves with. seal rings (0-ring) and spacers are now used on model R 50/5 commencing with frame No. 2 900 602 ” R 60/5 ” ” ” II 2 930 965 U R 75/5 U II II II 2 970 980 The new parts fit the three models…

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L SERVINICFEO RMAllO~ Techn.Customer Service Motorcycles R50/5, R60/5, R75/5 Group: Engine MUnchen, June 1970 VKT-20 Gi/Wi/St No. 6/70 (285) en. u Re: Engine oil specifications Dear Sirs, In conseqti-ence of comprehensive test work achieved in cooperation with the oil companies, our engine oil speci:t”ications are extended as follows: During fall, winter, and spring months (below +50°F) every 1550-miles or after no more tha.n 3 months SAE 20 SAE 10 W 30 SAE 10 W 50 (for the present from _Messrs. Mobiloil) During summer months (above 32°F) every 3000 miles or after no more than 6 months SAE 30 SAE 20…

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M (0 Customer Service V.GmbH B&S N.J Motorcycl~ R 75/5 Re: Constant Velocity Carburetor Gentlemen: Constant velocity carburetors are more critical and therefore, require that the tuning procedures are precisely followed otherwise irregular idle, poor performance, surging in mid-range and slow return to idle may occur. Tune as follows: 1. Remove and dismantle carburetor. 2. Make certain that the slide pilot sleeve has sufficient clearance in the dome bushing to allow the slide to fall freely of its own weight. The desired clearance is 0.07 mm (-.003 11 ). It is very important to have this clearance. To obtain this,…

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( Technical Customer Service VKT 20 Gi/wi=Ra Motorcycles R 50/5 Group: Engine Milnchen,April 1 70 No. 2/70 {280)en RE: Main _j_et Dear Sirs, To improve the transi:ti.on ·_ in the part-load range, the ca.rburetors of the R 50/5 model have been endowed, effective of frame No. 2 900 441, with a 135 size maln jet, ordering number 13 11 1 255 835 (former main jet size 145). Simultaneously, the needle position has changed from previous 2 to 3. In case of complaint the carburetors may be subsequently equipped with the new main jet. The settlement takes place via the usual…

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Technical Customer Service VKT 20 Gi/wi-Ra Motorcycles R 50/5,R 60/5 • Group: Engine MUnch&n,April 170 No, 1/70(279) en ‘ ) “–·’ RE: Carburetors with accelerating pump Dear Sirs, In order to improve the transition from idling to the partload range the carburetors of the R 50/5 model have been equipped with accelerating pumps quite from the beginnin$ of the standard ser.,t,al production, and that of the R 60/5 commencing with frame number 2 930 530, In case of complaint, the accelerating pump may be installed subsequently on the R 60/5 model; the complete conversion kit has the ordering number 13…

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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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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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.. SERVINICFEO RMAllffi, Tech.Cust. Service VKT 20 Gi/Zr Motorcycles R50/5,R60/5,R75/5 Group: Engine Mtinchen, April 7: No. 3/71 (308) e1 ~· — Ref.: Engine oil recommendations Dear Sirs, Following latest tests and developments we have made up new engine oil recommendations for our new motorcycles: Periods of oil change eutside temI!. T;lEe of oil Brand-HD-oil for Otto engines Single r~nge Multioil -prefe- range oil rable – All year over every Over+ 30°0 SAE 40 6000 km latest after most~y over SAE 30 SAE20W,il_ 6 months. + 10 C SAE20W50 At exclusive short distance use O outi~de zemp. below O C –…

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SERV•1 ICNEFO RMAllON Tech. Customer Service VKT 20 fm/Zr/Go Motorcycles R50/5,R60/5,R75/5 Group: engine MUnchen,Jan. 71 No. 2/71 (303) eng Ref.: Engine ventilation Dear Sirs, in order to avoid – as it happened in some cases – the contamination by oil concenoo.te of the Micronic air filter inserts, a new ventilation hose, ordering No .• 11 15 1 255 146, started in the series with chassis No~ 2 901 704 2 932 473 2 973 142 – R 50/5 – R 60/5 – R 75/5 Please refit all engines of your district during their next workshop visit with tbis new ventilation…

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