Raise the rear of the car and place it on stands. Turn away bolts of fastening and remove both wheels.
Removing
1. Unscrew the stopper of the brake fluid reservoir, close the hole with polyethylene and close the stopper again. Thus, it is possible to keep the main part of the liquid from flowing out when the brake system is opened.
2. Unscrew the two bolts that secure the buffer to the bracket on the chassis, shown by the arrows, and remove the buffer.
3. Loosen the nuts on the end of the parking brake equalizer to disengage the ends of the cables from the equalizer.
4. Disconnect both cables.
5. Remove the lock plates from the bracket on the chassis and slide the cables down. The fastening of the cables on the equalizer is shown in the illustration.
6. Disconnect the brake pressure regulator connecting rods from the rear axle. To do this, unpin the connection and unscrew the castellated nut.
7. Do not detach the bracket from the bridge.
8. Turn away a cap nut of connection of a brake hose with the brake pipeline and take out the pipeline.
9. Seal the end of the pipeline from dirt (e.g. duct tape).
10. Now the brake hose can be disconnected from the elbow.
11. Remove the lock plate with a mandrel and pliers.
12. Mark both flanges of the propshaft connection with paint as shown, and remove the four bolts and nuts (let the paint dry first).
13. Detach the propeller shaft from the axle flange, supporting the shaft so that it does not fall. You can secure the shaft with wire to the chassis or put something underneath.
14. Place a garage lift under the axle and raise the axle just enough to compress the shock absorbers.
15. Disconnect the lower shock absorber mounts from the support pins on the stepladder pads.
16. Loosen the nuts securing the ladders on the underside of the bridge.
17. Remove the washers and carefully knock the ladders up. In order not to warp the stepladders, strike evenly on the right and left. Be careful not to damage the thread.
18. Separate the rear axle from the chassis with the help of an assistant. Be careful not to tangle the parking brake cables.
19. Lower the bridge onto the lift.
Installation
Keep the following in mind when installing the bridge:
Check the condition of the ladders. Stepladders after removing them "disperse". Therefore, it is necessary to check whether the rods of the stepladder fit into the holes on the bridge. If not, then one rod of the ladder is clamped in a vice, and the second is carefully bent.
It may happen that when installing a new axle, it is necessary to transfer the brake hose and piping, as well as the parking brake cables from the old axle.
1. Put the bridge on the chassis and connect it to the springs.
2. Check that the center bolt of the springs fits into the corresponding holes in the axle.
3. Insert ladders on top.
4. From below, install and bolt the lining of the stepladders. The damper trunnion on the stepladder should be facing inwards as shown.
5. Screw on the four nuts and crimp them evenly in a criss-cross pattern.
6. Attach the shock absorber from below. The location of the fasteners is shown in the illustration.
7. Don't forget to install the spring washer.
8. Tighten the nuts to a torque of 40 Nm.
9. Set buffer.
10. Tighten the mounting bolts to a torque of 42 Nm.
11. Attach the axle ventilation hose.
12. Connect the flanges of the cardan shaft and the final drive gear in accordance with the markings and insert new bolts. Old bolts are not installed.
13. Tighten the nuts to a torque of 75 Nm.
14. Install the brake pressure regulator tie rods by installing the washer and spring washer.
15. Tighten the slotted nut by hand.
16. Don't pinch yet.
17. Attach the brake hose to the elbow and install the spring clip. Make sure the hose is in the correct position.
18. Fit and tighten the brake pipe union nut.
19. Fasten the parking brake cables as illustrated with locking plates to the chassis.
20. Lower the vehicle onto the wheels and evenly and crosswise tighten the nuts securing the spring ladders to a torque of 68 Nm.
21. Tighten the castellated nut of the brake pressure regulator rods to 13 Nm and cotter pin.
22. Finally, bleed the brake system as described in Chapter 9.
23. Remove the plug from the bridge and check the oil level. Add oil if necessary. If the oil has been drained from the bridge, it must be refilled.
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