Drive unit/gear – 2000 Changing of the drive shaft’s sealing ring T-code 781
Valid from serial number 904519-
Date 2005-11-04
Order number 229735-040
8.3 Changing of the drive shaft’s sealing ring The drive shaft’s sealing ring can be changed with the gear mounted in the truck. Follow the instructions below if oil is leaking from the drive shaft.
8.3.1 Dismantling • Unscrew the drive wheel 1). • Remove the lower cover and drain off the oil (22). • Release the drive shaft nut. Remove the nut and washer (16,17). • Carefully tap out the drive shaft with a brass drift and hammer (32). • Pull off the bearing from the drive shaft with tool 08-13022 (29). • Check that the bearing washers are not damaged. If they have been damaged by the puller tool, measure the total thickness of the shim washers and change them before assembling (30). • Remove the sealing ring from the drive shaft (31).
8.3.2 Assembling Assembling of the gear after changing the drive shaft’s sealing ring is carried out in the reverse order to dismantling. Pay special attention to the following during assembling: • Fill the sealing ring with grease after fitting it on the drive shaft. • Make sure that only undamaged shim washers with the same total thickness as the originals are put on the drive shaft. • Press the bearing on the drive shaft and make sure not to damage the bearing’s shim washers. • When fitting the drive shaft with bearing, shim washers and seal, make sure that the shaft keys correspond with the crown gear’s keys and that the bearing and seal are correctly positioned in the gear housing before the shaft is pressed in completely. • Put the distance ring on the drive shaft end, and put on the shaft nut. Always use a new nut. Tighten the shaft nut to a torque of 300 Nm and lock it with a punch mark in the middle. The drive shaft nut should be lubricated before it is put on the shaft. • Change the gasket before fitting the bottom cover. Make sure that it is not damaged. Fit the cover and tighten the bolts to a torque of 26.6 Nm. The bolts should be lubricated before they are fitted. Fill up with oil in accordance with the instructions for replenishing the oil. Fit the drive gear and tighten the bolts to a torque of 65 Nm.
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Service Manual
7SM08F
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