Removal
Place the vehicle on a two-post lift and turn off the ignition.
Remove the rear wheels.
Remove the rear wheel speed sensor wiring harnesses from the holders on the rear suspension arms.
Loosen the bolts securing the speed sensors to the rear brake shields and remove the sensors (torx T30 replacement bit, extension, ratchet wrench).
- disconnect the rear brake pressure regulator drive rod from the rear suspension arm beam;
- remove the hand brake cables from the holders on the rear suspension arms;
- remove brake drums;
- disconnect the hand brake cables from the brake shoe drive levers and remove the cable end from the holes in the brake shields;
- disconnect the brake pipes from the flexible brake hoses, the brake hoses should remain on the rear suspension arms.
Disconnect the shock absorbers from the rear suspension arms and remove the springs.
Install a transmission stand under the center of the rear suspension arm beam (transmission rack type OMA 604).
Loosen the nuts securing the rear suspension arms to the brackets, lower the transmission rack and remove the rear suspension arms from the vehicle. The operation is to be performed by two performers (replacement head 18, extension and ratchet).
Replacement of rubber-metal hinges
Figure 7-1 - Marking the location of the hinge in the rear suspension arm: M1 - mark on the rear suspension arm; M2 - mark on the hinge body
Attention: Before removing the rubber-metal hinge, it is necessary to mark its orientation in the hole of the rear suspension arm:
- make marks "M" and "M2" on the rear suspension arm and hinge;
- copy the "M2" mark to the new hinge.
Note: Marking the joints is necessary for correct installation and to prevent premature wear of the rear suspension arm joints, as well as to ensure reliable vehicle control.
Figure 7-2 - Pressing out the hinge: 1 - rear suspension arm joint; 2 - rear suspension arm; 3 - mandrel for pressing out from the Tag. 1838 set
Press out the rubber-metal hinge from the rear suspension arm (pressing mandrel from Tag. 1838 set, hammer).
Install the new rubber-metal joint 1, Figure 7-3, into the hole in the rear suspension arm 2 and align the marks "M1" and "M2", Figure 7-1.
Figure 7-3 - Pressing in the joint: 1 - rear suspension arm joint; 2 - rear suspension arm; 3 - pressing device from the Tag. 1838 set
Install tool 3, Figure 7-3, on the joint for pressing and press the joint into the rear suspension arm (pressing device from the Tag. 1838 set, ring spanner 17-2 pcs.).
Perform operations to replace the joint for the second lever.
Installation
Install the rear suspension arms onto the transmission stand and position them under the vehicle opposite the mounting points. The operation is to be performed by two performers (transmission rack type OMA 604, "Avtospetsoborudovanie", Pskov).
Install the rear suspension arms into the mounting brackets on the body, insert the bolts and tighten the nuts without tightening them (ring spanner 18, replaceable head 18, ratchet).
Set the rear suspension arms to the position for tightening the rubber-metal hinges and finally tighten the nuts of the rear suspension arm mounting bolts in the brackets.
Install the springs and connect the shock absorbers to the rear suspension arms.
- install the hand brake cables into the holders on the rear suspension arms;
- install the ends of the hand brake cables into the holes in the brake shields and connect them to the brake shoe drive levers;
- install brake drums;
- connect the brake pipes to the flexible brake hoses on the rear suspension arms;
- connect the rear brake pressure regulator drive rod to the rear suspension arm beam and adjust the pressure regulator drive.
Install the speed sensors into the holes in the brake shields and secure them with bolts. Tightening torque of bolts 14 Nm (1.4 kgf·m) (torx T30 replacement bit, extension, ratchet wrench, torque wrench).
Install the rear wheel speed sensor wire harnesses into the holders on the rear suspension arms.
Bleed the brake system and, if necessary, the clutch hydraulic drive.
Install the rear wheels.
Check the efficiency of the service brake system.