31 50 001 Removing and Installing/Replacing Front Differential
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW 335xi, 2008 BMW 328xi, 2007 BMW 335xi, 2007 BMW 328xi, and 2006 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Danger to life!
Secure engine in installation position. See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52) to prevent it from falling down.
Secure engine in installation position. See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52) to prevent it from falling down.
Necessary preliminary tasks:
- Secure engine in installation position. See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52)
- Drain and dispose of front differential oil. See 31 50 ... Changing Front Differential Oil
- Remove left output shaft. See 31 60 000 Removing and Installing/Replacing Left or Right Output Shaft
- Press right output shaft. See 31 60 ... Pressing Output Shaft Out of Drive Flange (Wheel Hub) and Drawing in approx. 6 to 7 cm out of front differential
- Replacement only:
- Replace front axle output flange on transfer box. See 27 10 050 REPLACING OUTPUT FLANGE FOR FRONT AXLE OUTPUT (ATC 300)NOTE: Replace the output flange to ensure a clean seal on the transfer case.
- Replace front axle output flange on transfer box. See 27 10 050 REPLACING OUTPUT FLANGE FOR FRONT AXLE OUTPUT (ATC 300)
- Lower front axle support. See 31 11 506 Lowering / Raising Front Axle Carrier (AWD)
IMPORTANT:
Grip front differential firmly while releasing last bolt in order to avoid damage caused by the differential falling.
Version with automatic transmission: If necessary, disconnect hydraulic lines from oil sump.
Release screws (1).
Tightening torque 31 50 1AZ. See 31 50 FRONT AXLE DIFFERENTIAL E90
Detach front differential from oil sump and remove towards rear.
Installation:
Replace O-ring. See 31 51 060 Replacing O-ring for Front Differential on Right if necessary.
Coat O-ring with front differential oil.
After installation:
- fill with front differential oil. See 31 50 ... Changing Front Differential Oil
- Check transfer case oil level. See 27 00 ... REPLENISHING / CHANGING TRANSFER CASE OIL (ATC 300) , correct if necessary
- Carry out steering angle sensor adjustment. See 61 31 996 CARRY OUT STEERING ANGLE SENSOR ADJUSTMENT