Examination
Attention! The car must be on the front wheels.
Set wheels straight.
Slightly move the steering wheel with your fingers over the outer edge of any of its spokes. The total play should not exceed 15 mm (measured around the circumference of the steering wheel, approximately equal to the width of a finger).
a - axial play of the steering shaft
b - clearance between steering roller and steering shaft
c - axial play of the steering gear roller
Adjustment
Attention! Before adjusting the steering mechanism, be sure to check the tightening of the bolts of its crankcase cover (25 Nm) and steering gear on the front suspension cross member (30 Nm). Tighten screws if necessary. If the gap is too large, then this can be caused by three reasons, which must be eliminated in the following sequence:
1) Correct the axial play of the steering shaft
The axial play of the steering shaft is adjusted by moving the shaft in a flexible disc clutch. In this case, the front of the car must be raised. If there is a backlash, then it can be eliminated as follows.
Loosen the locknut of the adjusting bolt. To do this, turn the steering mechanism to the left or right as far as it will go.
Turn the steering shaft at the steering gear joint while tightening the adjusting bolt until the play is eliminated.
Tighten the adjusting bolt and locknut.
Rotate the steering shaft from lock to lock. In this case, strong side impacts in the bearings should not be felt. If there are bumps, then the adjusting bolt is too tight. In this case, you need to repeat the adjustment.
2) Correct clearance between steering roller and steering shaft
If after adjusting the steering shaft play, there is still play in the steering mechanism, the position of the steering roller relative to the steering shaft should be adjusted. In this case, the car must be installed on supports, and when checking it, it should be lowered to the ground.
Place the steering gear in the middle position and then turn the steering wheel 90°to the left or right.
Access to the adjusting bolt is possible through the hole in the trunk lid.
Loosen the lock nut of the steering roller shaft adjusting bolt and back out the adjusting bolt approximately one turn. Then screw in the bolt until a slight resistance becomes noticeable due to the contact of the roller with the steering shaft. Fasten the adjusting bolt and tighten its locknut to 22-25 Nm.
Lower the vehicle to the ground and check the adjustment. To do this, turn the steering wheel from the middle position by 90°, first to one side and then to the other. In this position, check the play of the steering wheel (it should not exceed 15 mm). If, after turning to one of the sides, a greater play is found, then the adjustment of the steering gear roller in relation to the steering shaft should be repeated when the steering wheel is turned in the same direction by 90°. Finally, take a test drive and check if the steering wheel returns to the middle position after exiting the corner (at a speed of about 20 km/h, at an angle of 45°). If not, then the steering roller is too tight. In this case, you must repeat the adjustment to avoid damage to the steering mechanism. After adjusting the mechanism, it is also necessary to check the toe-in of the wheels.
3) Correct the axial play of the steering roller
If the above adjustments do not achieve the desired result, the axial play of the steering roller should be checked again. To do this, you need to disassemble the steering mechanism and eliminate the play by properly installing the roller (work done in the workshop).
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