Wishbone Replacement (Front)

Deformed wishbones must always be replaced as an assembly. But worn bearing bushings can be replaced, although it is better to entrust this work to your workshop (see section «Checking the control arm bearings»). In order for the bearing boxes to match exactly and really be at a certain distance from each other, professionals use a special tightening tool or a hydraulic press with the appropriate nozzles.

Dismantling

Engage handbrake, loosen wheel nuts.

Raise the vehicle and place it on tripods. Secure the rear axle with an additional wedge.

Remove the front wheel.

Unscrew the bolts on the crankcase and wheel housing (two on each side).

Remove the crankcase protection.

Cover the sealing lip on the ball joint with a soft cloth.

Unscrew bolt 1; Disconnect the ball joint 2, use a puller for this.



Remove bolts 1 and 2 on the lower transverse arm.




Remove the transverse arm.

Installation

Always use new nuts, bolts and washers.

Tighten the transverse arm mounting bolts in five steps. 1. pre-tighten nut 1 to 100 Nm; 2. then tighten nut 2 by another 60°; 3. tighten nut 2 to 120 Nm; 4. pre-tighten bolt 3 to 120 Nm; 5. tighten bolt 3 by 90°; then check bolt 3 with a torque wrench, whether the tightening value is 170-230 Nm.



Don't forget the heat shield on the control arm.

Push in the ball joint.

tighten bolt (50 Nm).



Install the front wheel.

Complete the work in reverse order.

Measure the front axle in the workshop.