To prevent the body from lowering immediately after the engine stops, a hydraulic or pneumatic accumulator is attached to the shock absorbers, which increases the pressure in the shock absorber using compressed nitrogen. This hydraulic or pneumatic accumulator also acts to accept in working condition the working fluid that is displaced when the shock absorber piston rod is raised.
Note: The hydraulic level control system is still under high pressure even after the engine has stopped. Therefore, do not loosen the wire and level control hose connections.
Rear wheel bearing replacement. Front wheel drive vehicles
When replacing a bearing, a new cotter pin, inner and outer bearing, and an O-ring are used.
Remove brake drum (chapter «brakes»).
For machines with disc brakes, the brake discs, including the wheel hub, are removed from the rear. To do this, remove the disc wheel brake caliper (chapter «brakes»). The rest of the removal takes place as with brake drums.
Remove the sealing ring in the rear of the wheel hub, remove the bearings and wipe off the old grease from the hub.
Knock out the outer races of both bearings from the wheel hub. To do this, use a brass punch, which is pointed from the inside onto the bearing race and knocked out with a hammer. Please note that the clips are not connected.
Install new outer bearing races into the wheel hub (thick side inside), so that no damage occurs during adjustment.
The mounting points for the rear suspension strut are almost the same for front-wheel drive and all-wheel drive vehicles.
Left: Shown here are the top three mounting bolts (arrows).
Right: lower mounting bolt shown (arrow) for front wheel drive vehicles.
Installation of rear wheel bearings for vehicles with front wheel drive.
Left: Removing the protective cap. Carefully insert the chisel behind the ring of the protective cap. Carefully knock the cap forward with hammer blows. Change the position of the chisel and do this a few more times. Do not bend the cap.
Right: thrust washer (1) under the nut (2) (here still with slotted stopper installed) with the bearing clearance correctly adjusted with a screwdriver, it should move slightly forward. The slot of the screwdriver must not rest on the brake disc.
Press the bearing races to the stop using the old race.
Now remove the old bearing race worn for protection.
Lubricate the gap between both bearing races, fill the races and bearings with grease.
Install the inner bearing.
Install the sealing ring on the inside evenly with a rubber mallet.
Install the brake drum and respectively the disc.
Install outer wheel bearing and thrust washer.
Tighten the lock nut 1/8 turn by hand; keep rotating the wheel so that the bearing does not get pinched.
wheel bearing adjust (see next section).
For machines with a disc brake system, install the disc wheel brake calipers at the rear. Then repeatedly press the brake pedal.
Rear wheel bearing adjustment. Front wheel drive models
Raise the rear of the vehicle and secure it.
Remove the wheel cap, cotter pin and crown cap as described in section «Removing the brake drum» in chapter «Brake system».
Models with rear drum brakes: Press the adjusting wedge upwards as described in the above section. Then the brake drum will rotate completely freely.
Tighten the hex nut without undue force while rotating the wheel so as not to pinch the bearings.
Slightly loosen the nut again.
The backlash is set correctly if you can slightly move the thrust washer behind the nut by lightly pressing the screwdriver. The blade of the screwdriver must not rest on the edge of the wheel hub.
If even now it is still impossible to insert the locking pin into the locking latch, then it means that the nut needs to be turned slightly in the direction «close».
Put on the wheel cover, tapping with a rubber mallet, if necessary, put a tight bundle of rags.
Wheel bearings for all-wheel drive models
All-wheel drive models and the rear axle have press-fitted double ball bearings. Although they do not need to be adjusted, but due to the lack of molds, they cannot be changed by yourself.
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