31 12 004 Removing and Installing/Renewing Left or Right Lower Wishbone
31 12 004 Removing and installing/renewing left or right lower wishboneSpecial tools required:
Important!
^ With vehicles F01, F02 and F07 up to version 02/2010, only renew wishbones in pairs!
^ Read and comply with BMW Parts Department notes.
^ If the lower wishbone is detached from the front axle support, it is necessary after reinstallation to carry out a chassis / wheel alignment check.
Necessary preliminary work:
^ Remove front wheel
^ Remove steering box cover
^ Remove gaiter from steering box
Release nut (1) and remove screw.
Tightening torque 31 12 7AZ.
Release spring strut from wishbone (2).
Installation note:
Replace self-locking nut.
Note direction of insertion of screw.
Observe assembly sequence.
Release screw (1) and remove wishbone (2) from front axle support.
Tightening torque 31 12 3AZ.
Installation note:
Note direction of insertion of screw.
Replace self-locking nut.
Observe assembly sequence.
Important!
Do not release wishbone from swivel bearing with impact tool.
The swivel bearing must be removed if the steel bushing moves.
Rubber boot of wishbone must not be damaged!
Do not pull stainless steel ring off journal.
Release nut (1) and remove wishbone (2) from swivel bearing.
Tightening torque 31 12 4AZ.
Installation note:
Keep wishbone to swivel bearing connection clean and free from oil and grease.
Replace self-locking nut.
Important!
Risk of damage!
Observe assembly sequence.
Lower wishbone must be screwed in normal position! (Adjustment of normal position, see below).
1. Install lower wishbone (do not tighten down screw connection)
2. Secure special tool 31 5 220 to wheel hub with wheel studs
3. Raise swivel bearing using workshop jack in conjunction with special tool 31 5 220
4. Adjust upper wishbone to body to dimension (A)
5. Tighten lower wishbone/swivel bearing screw connection
Tightening torque 31 12 4AZ.
6. Tighten lower wishbone/front axle support screw connection
Tightening torque 31 12 3AZ.
7. Tighten lower wishbone/spring strut screw connection
Tightening torque 31 12 7AZ.
Adjusting normal position:
(Swivel bearing is removed for purposes of clarity)
Installation note:
Secure upper wishbone (1) to body vertically to dimension (A) = 85 mm.
After installation:
^ Perform chassis / wheel alignment check
.°P:
