390119 Removing and installing rear final drive
WM 390119 Removing and installing rear final drive
Technical values
Preliminary work for rear final drive
1. Remove exhaust system. -> 260119 Removing and installing exhaust system - section on "Removing" Service and Repair
2. Remove rear cardan shaft. -> 393519 Removing and installing rear cardan shaft - section on "Removing" Service and Repair
3. Remove drive shafts. -> 422119 Removing and installing rear drive shaft - section on "Removing" 422119 Removing and installing rear drive shaft
Removing rear final drive
1. Together with rear-differential lock: Remove strut at axle housing.
Strut, rear axle housing
2. Remove heat shield -1- at final drive.
Heat shield, rear final drive
3. Remove servo motor wiring harness for rear-differential lock with supports -arrows- from transmission.
Wiring harness, rear-differential lock
4. Together with air suspension: Detach air compressor and hang it to one side. -> 431519 Removing and installing compressor for levelling system Service and Repair
5. Place transmission jack under rear final drive and secure with retaining strap.
6. Unscrew fastening screws -arrows- at the left and right rear final drive.
Fastening screws, rear final drive
7. Unscrew fastening screws -arrows- for centre rear final drive.
Mount, centre final drive
8. Remove rear final drive by tilting it backwards.
Installing rear final drive
1. Replace sealing rings on the output sides. -> 392219 Removing and installing sealing ring for right halfshaft flange 392255 Replacing sealing ring for output flange
2. Secure rear final drive on transmission jack with retaining strap.
3. Insert final drive by tilting it backwards.
4. Screw in new fastening screw -arrow on left- and nut for centre rear final drive -arrow on right-. => Initial tightening: 90 Nm (67 ftlb.) => Final tightening: 120°
Mount, centre final drive
5. Screw in new fastening screws -arrows at top- and nuts -arrows at bottom- at the left and right final drive. => Initial tightening: 90 Nm (67 ftlb.) => Final tightening: 120°
Fastening screws, rear final drive
6. Together with air suspension: Secure air compressor. -> 431519 Removing and installing compressor for levelling system Service and Repair
7. Fit servo motor wiring harness for rear-differential lock with supports -arrows- to transmission.
Wiring harness, rear-differential lock
8. Install heat shield on final drive. => Tightening torque: 10 Nm (7.5 ftlb.)
Heat shield, rear final drive
9. Together with rear-differential lock: Install strut on rear axle housing using new screws. => Tightening torque: 33 Nm (24 ftlb.)
Strut, rear axle housing
Subsequent work for rear final drive
1. Install drive shafts. -> 422119 Removing and installing rear drive shaft - section on "Installing" 422119 Removing and installing rear drive shaft
2. Install rear cardan shaft. -> 393519 Removing and installing rear cardan shaft - section on "Installing" Service and Repair
3. Install the exhaust system. -> 260119 Removing and installing exhaust system - section on "Installing" Service and Repair