Find out if there are any cracks or traces of contact with road obstacles or the body on the suspension parts, deformation of the levers, stabilizer bar, rear body parts in the places where the suspension units and parts are attached.
Check the condition of the rubber-metal hinges, rubber cushions, and the condition (settlement) of the suspension springs.
Rubber-metal hinges and rubber cushions are subject to replacement in case of ruptures and one-sided bulging of the rubber, as well as in case of cutting of their end surfaces.
The location of the rear suspension elements on the vehicle is shown in Fig. 4.3.
Fig. 4.3. Location of rear suspension elements on the vehicle: 1 – rear suspension shock absorber support; 2 – compression buffer; 3 – rear suspension shock absorber; 4 – rear suspension spring gasket; 5 – rear suspension spring; 6 – silent block; 7 – rear suspension beam
The following are not permitted on rubber-metal hinges:
- signs of aging, cracks;
- one-sided bulging of the rubber mass.
Replace defective parts.
Check for mechanical damage (deformations, cracks, etc.) to suspension components.
1. Inspect the rubber bushings of the lower shock absorber mount and the shock absorbers. No fluid leaks or "sweating" are allowed on the shock absorbers.
2. Check the rubber-metal hinges (silent blocks) of the rear suspension beam mount.
3. Check the springs.
Note. Pay attention to the exhaust system. Extraneous knocking sounds from it are often mistaken for knocking in the rear suspension. The use of non-standard parts or a break in the muffler suspension elements can cause a strong knock, especially when revving. To check, stop the engine, carefully inspect the exhaust system, check the reliability of the fastening and suspension of the muffler. Taking the end of the exhaust pipe, swing the muffler up and down and from side to side - there should be no knocking.
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