Removal of the rear axle gearbox must be carried out in the following order. Prepare fixture «33.4.420» and disconnect the rear drive shafts from the output flange of the rear axle differential.
Disconnect the propeller shaft from the rear axle reduction gear and install the tool «33.4.420» (pic. 14.7), it is necessary to observe the gap (arrow) between fixture and dust collar (1). Damage to the cuff will cause increased noise.
Unscrew the three rear bolts securing the heat-insulating screen, move it down, while accessing the front bolts (8, see fig. 14.2) fixing the rear axle gearbox, and unscrew the bolts. Loosen the nut (11) and remove the bolt (10). Detach the breather line from the rear axle reduction housing and remove the reduction gear downwards.
The installation of the rear axle gearbox should be carried out in the reverse order, while it is necessary to install the rear axle gearbox in place using a jack.
Insert the front bolts, screw on new self-locking nuts, but do not tighten them. Insert the rear bolt in the same way and remove the jack.
Tighten the two front bolts to 100 Nm (10.0 kgf·m), and the rear bolt with a torque of 165 Nm (16.5 kgf·m).
Install locking plates (2, see fig. 14.16) and tighten the bolts (3) CV joint mountings (M12) torque 110 Nm (11.0 kgf·m), bolt type «Torx» (M10) - 83 Nm (8.3 kgf·m).
After completing the work, check the oil level.