Contents: Disassembly ↓ Assembly ↓
Disassembly
If the suspension repair requires complete disassembly of its components, it is more convenient to start this directly on the car, after removing the protective crankcase plate and mudguard.
To do this, do the following:
- unscrew the nut of the upper ball joint pin 41 (fig. 4-1) and release the hoses from the clamps;
- bending the petals of the protective cover, unscrew the bolts securing the caliper guide and move it together with the caliper to the side;
Warning: To prevent damage to the hoses, do not allow the caliper to hang by the hoses.
- using tool 67.7823.9514, remove the hub cap and unscrew the wheel hub bearing nut;
- remove the front wheel hub assembly with the brake disc using the ejector 67.7823.9516;
- remove the front brake cover;
- remove the front suspension shock absorber;
- compress the suspension spring until the lower arm is completely unloaded by lowering the lower suspension arm onto a stand;
- disconnect the ball joint housing from the lower and upper suspension arms and remove the steering knuckle;
- smoothly unload the suspension spring and remove it;
- using the 67.7823.9515 ejector, knock out the axle and disconnect the lower suspension arm from the crossmember;
- disconnect the upper arm axle from the crossmember and remove the axle assembly with the arm;
Note: Before removing the upper and lower control arm axles, count the number of washers on each end of the lower control arm axle and on the upper control arm axle mounting bolts so that they can be returned to their original locations when reinstalling the control arm axles.
- remove the rebound buffer bracket and crossmember as described above;
- use puller 67.7824.9516 to press the ball joint pins out of the steering knuckle holes.
The front suspension parts are shown in Fig. 4-7.
Fig. 4-7. Front suspension parts:
1 - lower spring support cup; 2 - lower arm; 3 - lower arm axle; 4 - rubber-metal hinge of the lower arm; 5 - spring; 6 - upper support cup; 7 - spring insulating gasket; 8 - compression buffer; 9 - compression stroke limiter; 10 - suspension cross member; 11 - crossmember bracket bushing; 12 - crossbar bracket; 13 - Engine mounting bracket; 14 - upper spring support; 15 - adjusting washer; 16 - Upper arm axle; 17 - upper arm; 18 - Bracket of the rebound buffer; 19 - rebound buffer; 20 - rubber-metal hinge of the upper arm; 21 - ball joint; 22 - Ball joint protective cover; 23 - bracket for attaching the rod to the body; 24 - stabilizer bar; 25 - shock absorber; 26 - pillow clip; 27 - pillow.
Assembly
Assembly of suspension units is carried out in the reverse order of disassembly. When assembling the wheel hub, put a layer of Litol-24 grease in the bearing separators and apply it in an even layer in the cavity of the steering knuckle between the bearings in the amount of 40 g per knuckle.
When installing the cross member braces, tighten the inner nut until the gap between the washer and bracket 3 is selected (fig. 4-6), and the outer one - by the moment specified in Appendix 1.
To prevent incorrect distribution of forces in rubber-metal hinges, tighten the nuts of the lever axles under a static vehicle load of 3140 N (320 kgf). Then check and adjust the installation and toe-in angles of the wheels.