Removing and Installing/Replacing Front Differential

31 50 001 - Removing and installing/replacing front differential





Warning!
Danger to life!
Secure engine in installation position Securing Engine In Installation Position (N52, N53) to prevent it from falling down.
Danger of poisoning 00 .. ... Danger of Poisoning If Oil Is Ingested/Absorbed Through the Skin if oil is ingested/absorbed through the skin!
Risk of injury 00 .. ... Risk of Injury If Oil Comes Into Contact With Eyes and Skin if oil comes into contact with eyes and skin!

Important!
Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Seal off hydraulic lines with plugs.





Necessary preliminary tasks:
- Draw off and dispose of hydraulic fluid from fluid reservoir
- Secure engine in installation position Securing Engine In Installation Position (N52, N53)
- Disconnect pressure line from vane pump
- Disconnect return line from cooling coil Notes on Hydraulic Line with Quick-Connect Coupling
- Drain and dispose of front differential oil Changing Front Differential Oil
- Remove left output shaft Removing and Installing/Replacing Left or Right Output Shaft
- Press right output shaft Press Right Output Shaft Approx. 6 To 7 Cm Out of Front Differential approx. 6 to 7 cm out of front differential
- Remove propeller shaft from front differential
- Replacement only:
- Replace front axle output flange on transfer box Replacing Output Flange for Front Axle Output (ATC 300)
Note: Replace the output flange to ensure a clean seal on the transfer case.
- Lower front axle carrier 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 7AZ 31 50 Front Axle Differential.
Detach front differential from oil sump and remove towards rear.

Installation Note:
Replace O-ring Replacing O-ring for Front Differential on Right if necessary.
Coat O-ring with front differential oil.





After installation:
- Fill and bleed hydraulic system Service and Repair
- Check pipe connections for leaks
- Fill with front differential oil Changing Front Differential Oil
- Check transfer case oil level Procedures, correct if necessary
- Carry out steering angle sensor adjustment Adjustments