Rear Wheel Drive Gear Oil Change; Sump Guard Installation - BMW R850 Maintenance Manual

Rear Wheel Drive Gear Oil Change

Tools
socket – 19mm
hex bit socket – 6mm
ratchet
oil drain pan
carb or brake cleaner
torque wrench
funnel
measuring cylinder (photo store)
rag
1. Put the bike on the centerstand.
2. Remove the right saddle bag.
3. Place the oil drain pan under the drain plug.
4. Remove the drain plug on the bottom center of the rear wheel hub, 19mm
socket.
5. Remove the fill plug at the rear of hub, 6mm hex bit socket.
6. Clean the metal filings from the magnetic drain plug using a rag and carb or
brake cleaner.
7. Install the drain plug using a new crush washer, torque to 17 ft.lb. (23 Nm).
8. Fill the rear wheel drive with 250cc (0.26 qt.) of synthetic gear oil using a
funnel – fill to the bottom inside edge of the filler hole threads.
9. Install the fill plug using a new crush washer, torque to 17 ft.lb. (23 Nm).
Sump Guard Installation (GS only)
Tools
socket – 10mm
ratchet
1. Reinstall the sump guard (skid/bash plates), 10mm socket.
Note: The front nuts with their metal sleeve will tighten up normally. However, the
rear nylock nuts will not get tight because of the rubber spacers above the plates
– so just tighten them until they are snug. (R1100GS may have the self-locking
nylock nuts front and rear).
Parts
gear oil, synthetic (75W/90) 250cc
crush washers
- drain plug
- fill plug
Parts
none
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