Disassembly And Reassembly - BMW R 51/3 Workshop Repair Manual

Disassembly
Put motor cycle on the assembly stand (drawing V 5043).
Dhassemblyof rear wheel drive:
loosen set screws of mudguard stays and raise end of rear mudguard.
Unscrew hub spindle nut (4) on
drive side and remove together
with washer (3).
Slacken clamp screw on left axle
holder and withdraw hub spindle
axle by means of pin (5).
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Remove wheel.
2
Unscrew winged nut from brake conduit on brake pedal.
Depress pedal so that brake rod slides off the brake arm.
Remove bolt from brake operating lever, put it in the brake rod bore and screw on
winged nut.
On R51/3 of 1952 and R67/2 models, unscrew cap nuts from upper spring retainers.
loosen upper clamp screW on right rear spring bracket.
Remove lower clamp. screw together with nut and washer on right rear spring bracket.
Withdraw right silencer.
Drive right guiding tube of rear wheel spring assembly cautiously from downwards to
upwards by means of punch W 5013 (shop-made tool).
Press rear wheel drive assembly to left downward and remove it rearwards from the
rubber coupling of the shock absorber.
If needed, dismount left hub spindle holder and spring following the same procedure.
'Disassembly of
Gear Box:
Disconnect battery.
Unhook battery holder and remove battery.
Withdrow speedometer shaft from drive bushing after <loosening its set screw.
Disassembly and Reassembly Group
3