Removing
Raise the rear of the car and place it on stands. Remove rear wheels.
Disconnect the propeller shaft from the final drive gear flange.
Disconnect the brake hydraulic hose from the steel tube mounted on the axle and take measures to prevent leakage of fluid from the brake system.
Disconnect the parking brake rear cable brackets from the body, remove the front cable release spring and, by unscrewing the locknut and adjusting nut, release the rear cable branch. Disconnect the rod 13 from the bracket on the bridge beam (rice. 4-14) rear brake pressure regulator. Disconnect the upper ends of the shock absorbers 25.
Place a hydraulic jack under the rear axle beam. Disconnect the longitudinal 3 and 17 and the transverse 24 rods from the brackets on the body, lower the jack and remove the bridge.
Proceed to disassembly of the suspension:
- remove the shock absorbers from the brackets on the axle beam;
- Disconnect the longitudinal and transverse rods from the brackets on the bridge beam.
Details of a back suspension bracket are shown on fig. 4-15.
Pic. 4-15. Details of the rear suspension: 1 - lower longitudinal rod; 2 - rubber bushing; 3 - bracket; 4 - spacer sleeve; 5 - upper longitudinal rod; 6 - additional compression stroke buffer; 7 - spring; 8 - upper spring cup; 9 - compression stroke buffer, 10 - upper spring insulating gasket; 11 - shock absorber; 12 - lower insulating gasket of the spring; 13 - cross bar
Installation
Installing the rear suspension is carried out in the reverse order of removal.
At the same time, install springs of the same class on the suspension as in the front suspension. In exceptional cases, if the front suspension has class A springs (unmarked), and for the rear suspension there are no such springs, it is allowed to install class B springs (with black marking). If class B springs are installed in the front suspension, only class B springs are installed in the rear suspension.
To prevent damage and over-tightening of the elastic bushings of the hinges of the rods and shock absorbers:
- load the rear of the car so that the distance «X» from the axle beam to the body side member, measured 100 mm from the cross bar bracket (pic. 4-16), was 152 mm;
- tighten the nuts on the bolts for attaching the longitudinal and transverse rods, as well as on the pins for attaching the shock absorbers to the axle beam and to the body, with a torque wrench.
Pic. 4-16. Rear suspension installation scheme: 1 - body spar; 2 - cross bar bracket, 3 - rear axle beam; X=152mm