Control Arm And Control Arm Bushings, Replacing
Control arm and control arm bushings, replacing
Special tools:
116 1422 QUICK RUST SOLVENT 200ml:SPRAY 116 1422 Quick Rust Solvent 200ml:Spray
116 1435 QUICK RUST SOLVENT 200ml: SPRAY USA 116 1435 QUICK RUST SOLVENT 200ml: SPRAY USA
998 5433 PULLER PLATE B 12-75 MM 998 5433 Puller Plate B 12-75 mm
999 5065 PUNCH 999 5065 Punch
999 5624 Counterhold 999 5624 Counterhold
999 5625 Punch 999 5625 Punch
999 5626 Counterhold 999 5626 Counterhold
999 5637 Puller 999 5637 Puller
999 8081 TORQUE GAUGE 0-6 Nm 999 8081 Torque Gauge 0-6 Nm
Note! There may be certain deviations in the illustrations.
Note! The ball joint is integrated in the control arm and cannot be replaced.
Remove the control arm from the cross member
Raise the car.
Slacken off the ball joint nut as much as possible.
Note! Clean the ball joint thread using a wire brush. Use rust penetrator 116 1422 QUICK RUST SOLVENT 200ml:SPRAY 116 1422 Quick Rust Solvent 200ml:Spray ( 116 1435 QUICK RUST SOLVENT 200ml: SPRAY USA 116 1435 QUICK RUST SOLVENT 200ml: SPRAY USA USA). If the ball joint releases in the cone, position a transmission jack under the control arm. Carefully lift (not more than so the front spring is in the resting position) until the cone jams. Remove the nut.
Remove:
- the stud in the front edge
- the two screws at the rear edge.
Move the wheel to one side. Pull out the control arm from the cross member.
Note! Ensure that the drive shaft is not pulled out of the transmission.
Control arm from ball joint, removing
Slacken off the nut positioned on the ball joint as much as possible.
Press the rubber down. Install the special tool 999 5637 Puller 999 5637 Puller.
Warning! Secure the tool to prevent damage.
Press out the ball joint.
Remove the nut and draw out the control arm.
Wheel spindle ball joint, check
Install the nut. Use a torque gauge 999 8081 TORQUE GAUGE 0-6 Nm 999 8081 Torque Gauge 0-6 Nm to measure the ball joint torque.
Torque during rotation must be between 1.0 and 3.0 Nm.
The control arm must be replaced if the torque is outside these values.
Ball joint rubber ring, replacing
Caution! Replace the ball joint rubber ring if it is worn or damaged.
Clean the area around the ball joint.
Remove the old rubber ring.
Lubricate the new ring and install it.
Ensure that the locking springs are correctly installed.
Control arm rear bushing, replacing
Turbocharged engines: Remove the nut on the right-hand side.
Position the control arm in a vise. Hold the bushing down using special tool 998 5433 PULLER PLATE B 12-75 MM 998 5433 Puller Plate B 12-75 mm.
Press the control arm out of the bushing using a drift.
Clean the axle end of the wheel spindle.
Lubricate the new bushing using soap solution. Press the bushing onto the control arm. Use special tool 999 5065 PUNCH 999 5065 Punch.
Note! Check the position of the bushing.
Note! The bushing must be secured inside (cannot be removed).
Press out the front bushing from the control arm
Remove the bushing. Use special tool 999 5624 Counterhold 999 5624 Counterhold and 999 5625 Punch 999 5625 Punch.
Lubricate the tool 999 5624 Counterhold 999 5624 Counterhold with soap water to facilitate removal.
Cut the bushing in the necessary places so that the tool can be correctly installed.
Press the bushing out of the control arm.
Note! Special tool 999 5625 Punch 999 5625 Punch cuts through the rubber.
Note! Before using this tool 999 5625 Punch 999 5625 Punch ensure that the tool is positioned over the pin 999 5626 Counterhold 999 5626 Counterhold. If necessary, grind out any unevenness.
Install the front bushing in the control arm
Note! To ensure that there is no exhaust leakage, see: Flanged joint, assembling Flanged Joint, Assembling.
Install the pin. Connect special tool 999 5626 Counterhold 999 5626 Counterhold. Lubricate the bushing using the soap solution and install it on the pin. Position 999 5625 Punch 999 5625 Punch on the pin and press the bushing onto the control arm. The bushing must be parallel to the control arm.
Remove 999 5626 Counterhold 999 5626 Counterhold by removing the pin.
Install the control arm
Install the control arm with the ball joint on the wheel spindle.
Install the control arm in the cross member. Install the screw and nut.
Install the two screws in the rear bushing.
Tighten all screws and nuts by hand.
Post-tighten the two rear screws. Tighten to 90 Nm.
Control arm, installing
Press the ball joint all the way down. Tighten to 67 Nm.
Remove the support and rock the car a few times so that the bushings come into the correct position.
Tighten the nut. Tighten to 90 Nm + 60°.
Check:
- the front mounting and wheel alignment. See Wheel alignment, checking / adjusting Wheel Alignment, Checking/Adjusting.