Note: Check shaft for score-marks at sealing ring tracks. Always replace shaft and sealing rings as a set.
Install gearwheel, shaft, pin and washer in engine cover.
Note: Check sealing ring for water pump cover and renew if necessary.
Lower the engine. See Group 11.
Remove oil return line.
Attach the left engine housing cover.
Connect the oil return line to the engine.
Install the engine. See Group 11.
Pack the space between the sealing rings with Shell Retinax EP2.
Drive inner sealing ring onto its seat with drift, BMW No. 11 6 540.
Drive in outer sealing ring flush with the friction face, using the appropriate adapter.
Install impeller wheel with locking collet.
Renew sealing ring on drain plug.
Tighten the hose clips with hose clip pliers, BMW No. 17 5 500.
Connect the clutch cable to the releaser shaft.
Attach the gear shift lever.
Install the seat.
Add coolant. See below.
Tightening torques:
- Engine block cover, left: 10 Nm
- Water pump cover: 10 Nm
- Water pump drain screw: 10 Nm
- Oil line to cylinder head: 8 Nm
- Oil line to engine block: 35 Nm