Replacement: front lower arm – BMW Z8 (E52). AUTODOC recommends:
The replacement procedure is identical for the left and right lower control arms.
All work should be done with the engine stopped.
Replacement: front lower arm – BMW Z8 (E52). Use the following procedure:
Step 1
Secure the wheels with chocks.
Step 2
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 3
Raise the front of the car and secure on supports.
Step 4
Unscrew the wheel bolts.
Replacement: front lower arm – BMW Z8 (E52). Tip from AUTODOC:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 5
Remove the wheel.
Step 6
Remove the control arm cover.
Step 7
Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
Step 8
Unscrew the ball joint fastening to the steering knuckle. Use a drive socket #22. Use a ratchet wrench.
Step 9
Disconnect the ball joint from the steering knuckle. Use a ball joint puller.
Step 10
Unscrew the lower fastener connecting the shock strut to the steering knuckle. Use a combination spanner #18. Use a drive socket #16. Use a ratchet wrench.
Step 11
Unscrew the front arm fastener. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 12
Remove the front fastener of the control arm.
Step 13
Remove the arm.
Step 14
Clean the mounting seats and the thread of the suspension arm. Use a wire brush. Use WD-40 spray.
Step 15
Install a new arm.
AUTODOC recommends:
During the installation process, use only new bolts and nuts.Do not damage the ball joint cover.
Step 16
Connect the ball joint to the steering knuckle.
Step 17
Screw the fasteners of the ball joint. Use a drive socket #22. Use a ratchet wrench.
Step 18
Clean the mounting seats and the thread of the suspension arm. Use a wire brush. Use WD-40 spray.
Step 19
Install the front fastener of the arm.
Step 20
Screw the front arm fastener. Use a combination spanner #18. Use a drive socket #18. Use a ratchet wrench.
Step 21
Support the arm. Use a hydraulic transmission jack.
Step 22
Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a combination spanner #18. Use a drive socket #16. Use a torque wrench. Tighten it to 81 Nm torque.
Step 23
Tighten the front fastener connecting the control arm to the subframe. Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 110 Nm torque.
Step 24
Tighten the fasteners of the ball joint. Use a drive socket #22. Use a torque wrench. Tighten it to 80 nm torque.
Step 25
Remove the support from under the arm.
AUTODOC recommends:
Replacement: front lower arm – BMW Z8 (E52). Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 26
Install the control arm cover.
Step 27
Treat all joints of the arm. Treat the shock strut fasteners. Use copper grease.
Step 28
Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 29
Clean the brake disk surface. Use a brake cleaner.
Replacement: front lower arm – BMW Z8 (E52). AUTODOC recommends:
After applying the spray, wait a few minutes.
Step 30
Install the wheel.
Replacement: front lower arm – BMW Z8 (E52). Professionals recommend:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 31
Screw in the wheel bolts. Use wheel impact socket #17.
Step 32
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 120 Nm torque.
Step 33
Remove the jacks and chocks.
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