Stretcher (beam) connected to the car body through rubber-metal hinges (2, fig. 14.2), and through transverse, guides, integral and swing arms, with a hub (1) rear wheel.
Wheels are driven by four levers (4, 6, 11 and 15, fig. 14.3), elastically connected to the subframe, which, in turn, is elastically connected to the body. The lever system and wheels are arranged in such a way that, together with rubber-metal bearings, they provide a precisely calculated steering effect when maneuvering the car. The damping of vertical vibrations of the rear axle is carried out by springs, shock absorbers or pneumatic suspension struts. The rear wheel hubs are mounted on two tapered roller bearings.
An electronic control system determines, using two sensors, the actual height of the body above the road and, if necessary, connects a compressor that pumps air into the racks. By increasing the pressure as the load increases, the regulator not only provides a constant ground clearance, but also comfortable damping when driving, regardless of the vehicle load.
General layout of the rear axle and suspension (pic. 14.1) and their design are clearly visible in Figure 14.2 and Figure 14.3.
Attention! Welding and straightening work on the rear axle beam is prohibited.
The rear suspension is made entirely of aluminum alloy, so the following measures must be taken:
- prevent contact of the suspension with AB electrolyte:
- to clean the suspension, use only a metal brush made of brass or stainless steel;
- close the suspension to prevent it from getting sparks from abrasive cutting tools and electric welding, when processing body elements in the process of repair and restoration work;
- Do not expose suspension elements to temperatures above +80°C.
Final drive gear ratios (GP) vehicle with gearbox (manual transmission / automatic transmission), the following:
- «3.0і» 4,10 / 4,10;
- «4.4i» – / 4,10;
- «4.6is» – / 3,91;
- «3.0d» – / 3,73.
Lateral clearance in the engagement of gears GP 0.06–0.14 mm.
Drive gear flange runout, no more than 0.07 mm.