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Service Bulletins

Copyright: Copyright 1998-2008 by John's Beemer Garage. All rights reserved. Apart from any fair dealing for the purpose of private study, research, criticism, review, or direct web page link, no part of this web publication may be reprinted, stored in a retrieval system, or transmitted  in any form by any electronic or mechanical copying system without the explicit written permission of the author.

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Service Bulletins

Group: Engine Issue Date Number
Valve guides December 1959 (166)
BMW R27 remedy for spitting Bing carburetors 26 July 1962 (191)
BMW R69S motorcycles 26 July 1962 (334)
Various innovations on singles and twins 26 February 1963 (198)
Installation of tachometer on R69S and R50S 21 May 1963 (201)
Piston fitting clearance model R27 18 July 1963 (203)
New air filter system on model R27 26 July 1963 (202)
Oil pump with higher capacity 13 February 1964 (207)
Flywheel marke for sport motorcycles 3 June 1964 (209)
Centrifugal advance unit of two-cylinder models 4 June 1964 (208)
Disc springs for clutch with increased application-presssure 18 June 1964 (211)
Strange engine and transmission noises 25 September 1964 (214)
Improved sealing between engine and cylinder flange 11 February 1965 (216)
Cover plate for front crankshaft main bearing 11 February 1965 (217)
Piston skirt clearances 12 April 1965 (220)
Rocker push rod 7 October 1965 (223)
R69S/R50S vibration damper maintenance 25 April 1966 (228)
New acceleration pump 20 June 1966 (229)
Colour marks on piston pin and boss 28 June 1966 (230)
Pistons R27 28 June 1966 (231)
New, rotary, valves 4 October 1966 (234)
Pistons R27 11 October 1966 (231)
Crankshaft bearing 17 November 1966 (238)
Ductile cast iron square-section piston rings 21 November 1966 (239)
Tappet guide bushing 15 December 1966 (241)
New breather 13 March 1967 (246)
Reduction of valve clearance 7 April 1967 (244)
Valve timing 10 April 1967 (248)
Colour marks of pistons 7 June 1967 (251)
Groved rotating shaft seal for flywheel 12 June 1967 (252)
Tachometer (rev.- counter) 15 June 1967 (250)
Air filter and carburetors 18 August 1967 (257)
Air filter and carburetors supplement 1 10 October 1967 (257)
Air filter and carburetter supplement 2 June 1968 (257)
Flywheel mounting 5 October 1967 (258)
Clutch n/a (259)
Rectangular piston rings with molybdenum insert 1 December 1967 (263)
Wet air filter in engine housing December 1967 (264)
Cylinder head July 1968 (269)
Cylinder head February 1969 (269)
Crankshaft February 1969 (277)
Group: Transmission & Driveshaft Issue Date Number
Helical gear for the speedometer drive January 1965 (225)
Magnetic oil drain plug on gearbox 4 May 1966 (227)
Kickstarter pressure spring 4 November 1966 (237)
Transmission output shaft - coupling flange 16 January 1967 (242)
End play of transmission shafts 7 June 1967 (253)
Wrench socket 494/3 for tightening gearbox output shaft nut 15 June 1967 (242)
Lubricant for transmission and righthand swingarm 21 June 1967 (254)
Hex. nut for splined coupling cup Supplement 2 16 October 1967 (242)
Floating bushings for first and fourth speed gears 20 October 1967 (260)
Facilitation of gear shifting on models R50, R60, R69S July 1968 (268)
Coil pressure spring for kickstarter March 1969 (270)
Shifting November 1969 (272)
Detent of speed gears January 1970 (275)
Group: Rear Wheel Drive Issue Date Number
Fitting of drive shaft housing cover on the models R50 and R69 23 September 1955 (n/a)
Axial gasket on rear wheel drive BMW R26 11 May 1956 (94)
Drive shafts BMW R25/3 - R26 - R27 1 February 1962 (183)
Introduction of 27:7 ratio and rear drive ventilation 9 May 1963 (200)
New solo gear ratio in rear wheel drive 18 July 1963 (204)
Drive shaft for two cylinder models 11 February 1965 (218)
Hardy disc for driveshaft universal 28 June 1966 (232)
Lubrication of rear wheel drive with hypoid oil SAE 90 22 July 1966 (233)
Checking of driveshaft mounting bolts 19 June 1967 n/a
Rear shock absorber retainer nut 10 August 1967 (256)
Tightening torque of the drive pinion bearing nut 16 August 1967 (255)
Rear wheel drive July 1968 (267)
Group: Suspension & shock absorbers Issue Date Number
Adjustment of tapered roller bearings on R26, R50, R60, R69 30 October 1956 (104)
Motorcycles R50S and R69S with hydraulic steering damper 27 July 1961 (179)
Lubrication of the front wheel-swinging arm bearing 18 June 1964 (212)
"Solo"-type suspension units on the two-cylinder models 11 February 1965 (219)
Seal rings on the front wheel swing arm bearing 7 October 1965 (224)
Telescopic front fork May 1969 (USA-1)
Group: Brakes, Wheels, Tyres Issue Date Number
Sealing of the wheel bearings 6 April 1964 (210)
Linking rod for foot brake 8 November 1966 (236)
Road behaviour of twin cylinder models March 1967 (261)
Tyre pressures 7 June 1967 (249)
Tyre fitting January 1968 (265)
Admission of tyres July 1968 (243)
Wheel hub December 1968 (235)
Group: Frame Issue Date Number
Changing vehicle serial number (German with translation) 3 November 1953 n/a
Changing vehicle serial number (German text) 5 October 1961 n/a
Reinforcement of R27 kickstand supports 2 November 1961 (181)
Special Equipment sidestand on two-cylinder models 18 June 1964 (213)
Fastening of saddle spring R27 21 April 1965 (221)
Bolts for fastening of saddle spring R27 3 November 1966 (226)
Fuel cock 10 March 1967 (245)
Pre-delivery instructions April 1968 n/a
Fuel tap June 1968 (266)
Group: Electrical System Issue Date Number
Improved centrifugal advance unit for BMW R27 28 September 1962 (194)
Installation of turn signal into single and twin motorcycles 11 October 1962 (192)
Battery 17 August 1965 (222)
Electrical switches - handlebar fittings 16 January 1967 (240)
Securing of cable retaining screws 10 March 1967 (247)
Burnt out ignition cable adapters 12 October 1967 (262)
Burnt out ignition cable adapters supplement 1 February 1968 (262)
Group: Maintenance Services & General Hints Issue Date Number
Oil recommendation for summer 1957 1957 (123)
Important hints for all motorcycle types 5 April 1962 (184)
New maintenance services and flat rate 17 December 1964 (215)
Preparation and maintenance of new machines November 1966 (n/a)

 

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