Disassembly

Disassembly



1 Remove rear axle center piece with rear axle shafts.




2 Clamp rear axle center piece with rear axle shafts on assembly stand (037) and support rear axle shaft. Drain oil from rear axle housing.




3 Unscrew end cover (57) from rear axle housing.




4 Pull off locking rings (35) between inner synchromesh joints and differential side gears with pliers or a hook and remove from housing.




5 Pull rear axle shafts out of differential side gears and remove together with compensating washers (36).




6 Force both radial sealing rings (29) out of rear axle housing.




7 Attach spreading device to rear axle housing and tighten hex. screws to 40 Nm (arrows).




8 Place spread measuring instrument on spreading device (058) and adjust dial gauge to 0 at 3 mm preload.





Attention! Make sure that stop pin of measuring instrument rests against contact surface on rear axle housing (refer to cutout, arrow in image).





9 Turn one face of thrust piece toward opening of locking ring and screw-in threaded spindle manually up to bearing outer race.




10 Preload (spread) rear axle housing to 0.20 mm by screwing in threaded spindle of spreading device.


Attention! When spreading, do not exceed value of 0.20 mm.


11 Remove spreading device.




12 Remove righthand locking ring from rear axle housing by means of pliers and mark.

13 Relax rear axle housing and remove spreading device from housing.




14 Remove lefthand locking ring from rear axle housing by means of pliers.




15 Take both bearing outer races of tapered roller bearings (11) from rear axle housing and mark to prevent mixups during reinstallation.





Note: For easier removal of bearing outer races, insert assembly mandrel for differential pinions (O46) at the right and force complete differential toward the left until differential rests against rear axle housing. Remove lefthand and righthand bearing outer race.





16 Move differential into position shown and take out of rear axle housing.




17 Pull both tapered roller bearings from differential housing by means of puller (041) and mark to prevent mixups during reinstallation.




18 Unscrew ring gear from differential housing and carefully force off in relation to housing.

Note: If the gear assembly is used again, mark position of ring gear in relation to differential housing, so that ring gear is reinstalled in the same position (arrow).