401719 Removing and installing lower front-axle control arm
WM 401719 Removing and installing lower front-axle control arm
Tools
Preliminary work
1. Raise the vehicle -> 400000 Lifting the vehicle.
2. Remove front wheel -> 440519 Removing and installing wheel 44051900 Removing and installing wheel.
3. Remove front underbody panel -> 519219 Removing and installing front underbody cover 519219 Removing and installing Cover For Front Underbody.
Removing trailing arm
1. Loosen trailing arm at wheel carrier -2-. Counter with a screwdriver 9546 while doing this. Then press off ball joint using press-out tool 9560.
To prevent damage to the rubber sleeves of the ball joint, coat the rubber sleeves and the press-out tool in this area with tyre mounting paste.
Trailing arm
2. Unscrew links for headlight beam adjustment (headlight height adjustment) -3- at the trailing arm (counter with an open-ended wrench). Left side only.
3. Remove threaded joint connecting trailing arm to diagonal arm -4- and front-axle carrier -5-.
Installing trailing arm
Before installing the trailing arm, check the various parts visually.
Replace lock nuts.
Observe correct tightening torques -> 400000 Tightening torques for front axle.
Ball joint taper must be free of grease.
Counter with a screwdriver 9546 when tightening the lock nuts on the ball joint of the trailing arm.
The sensor for headlight beam adjustment (left vehicle side only!) does not need to be calibrated.
- Installation is carried out in reverse order.
- When installing the trailing arm, make sure that the fastening screw on the trailing arm -5- is tightened only in vehicle position!
Vehicle position means: vehicle must be standing on its wheels, or the wheel suspension is lifted with a universal lift until the two markings line up.
Trailing arm
Subsequent work
1. Fit front underbody panel -> 519219 Removing and installing front underbody cover 519219 Removing and installing Cover For Front Underbody.
2. Fit wheel -> 440519 Removing and installing wheel 44051900 Removing and installing wheel.
3. Check wheel alignment values and set any values that are outside of the tolerance range -> 449503 Suspension alignment complete 44950300 Suspension alignment, complete.