Replacement
There are several types of ball joints. On early models they were secured with two M8 bolts, but from October 1974 onwards ball joints secured with three 7mm rivets were installed. Only ball joints with three 7mm mounting holes are supplied as spare parts.
Since February 1978, the ball pin diameter has been increased from 15 mm to 17 mm, and the hole in the steering knuckle has been increased accordingly. The diameter of the clamping bolt has also been increased (M10 instead of M8).
Only new type steering knuckles are supplied as spare parts, therefore when replacing the steering knuckle, it is necessary to install a ball joint with a 17 mm pin.
It is allowed to simultaneously install right and left ball joints with pins of different diameters.
1. Loosen the wheel mounting bolts, lift the vehicle (see chapter "Basic rules for carrying out work") and remove the wheel.
2. Remove the clamp bolt and nut securing the ball joint pin to the steering knuckle and separate the ball joint.
3. Move the suspension strut to the side to gain access to the suspension arm.
4. If the ball joint is attached to the suspension arm with rivets, drill them out with a 6 mm drill bit (the rivet heads have guide holes), then use a chisel to cut off the rivet heads and knock out the rivets. Remove the old ball joint from the lever.
5. If the ball joint is secured with bolts and nuts, loosen the bolts and remove the ball joint.
6. Install the new ball joint and secure it to the control arm with three 7x22 bolts, nuts and spring washers included in the repair kit (figure M:12). Tighten the bolts to the specified torque (see section "Technical data").
NOTE: If the old support was secured with two bolts and the new support has three mounting holes, ream out the two outer holes on the new support to 8.3mm diameter and secure the support with two M8 bolts.
7. Insert the ball joint pin into the hole in the steering knuckle and secure it with the clamp bolt and nut. Tighten the M8 clamp bolt to 3.0 kgf·m and the M10 bolt to 5.0 kgf·m.
8. Install the wheel and lower the car to the ground.
NOTE: If only the ball joint was removed, there is no need to adjust the front wheel alignment.
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