Driving unit/gear – 2550

6.1 Included components

6.2 Disassembly/Assembly Leakage from top cover

•Raise the truck and properly secure it using trestles.

•Unscrew the drive wheel.

•Unscrew the M8 bolts securing the gear unit in the gear cover using a 6 mm Allen key. Hold the gear unit to prevent it from falling down.

Assembly is done in reverse.

•Seal the gear unit against the cover using Loctite 547.

•Tighten the M8 bolts to a torque of 27 Nm.

Driving unit/gear – 2550

Replacing the drive axle jointing ring

T-codeValid from serial numberDateOrder number 787, 788931876-2006-04-10232370-040

6.3 Replacing the drive axle jointing ring

When replacing the drive axle jointing ring, the gear unit can remain installed on the truck.

If the drive axle leaks oil, follow the instructions below.

6.3.1 Disassembly

•Remove the drive wheel from the gear unit.

•Remove the lower gear cover and drain the oil (2).

•Loosen the drive axle nut. Remove the nut and the spacer ring (3).

•Carefully knock out the drive axle using a brass mandrel and hammer (4).

•Pull out the bearing from the drive axle using the bearing removal tool 08-13022 (5).

•Verify that the bearing plates are free from damage. If the plates have been damaged by the bearing puller, then measure the total thickness of the spacing washers and replace them prior to assembly (6).

•Remove the jointing ring from the drive axle (7).