BMW X3 Service & Repair Manual: Removing and installing/replacing a steering stub/wheel carrier

BMW X3 Service & Repair Manual / Suspension / Control arms and struts / Removing and installing/replacing a steering stub/wheel carrier

Special tools required:

33 5 120
33 5 125
33 5 123
33 5 121
33 5 124
33 5 126
33 5 122

Necessary preliminary work:

Remove REAR WHEEL .

IMPORTANT: Expand anti-twist lock sufficiently to avoid damaging thread when releasing collar nut (1).

Activate parking brake and release collar nut (1).

Installation note:

Lightly oil the gearing on the shaft journal.

No oil permitted on thread of shaft journal or collar nut.

Replace collar nut (1) by positive peening at flat areas of output shaft.

Suspension

IMPORTANT: Special tools 33 5 120 and 33 5 125 must be inserted in all-round slot (1) on output shaft!

Suspension

Use special tools 33 5 123 , 33 5 121 , 33 5 124 /33 5 126 to push the output shaft out of the rear axle final drive by jerking.

Here, synchronising key of bolt 33 5 122 must rest on rear axle final drive.

Suspension

Installation note:

High installation forces indicate that the output shaft spline teeth are damaged or deformed! Check gearing, replace damaged components.

Check dust plate (1) for damage, renew if necessary.

Circlip (2) must be replaced.

Coat contact surface (3) of output shaft with approved final drive oil.

Suspension

IMPORTANT:

The RADIAL SHAFT SEAL FOR THE OUTPUT SHAFT should be replaced every time the output shaft is removed and installed.

The circlip of the output shaft must be replaced after re-installation.

IMPORTANT: Secure wheel carrier against falling out.

Loosen the PULSE SENSOR ON THE WHEEL CARRIER .
Loosen the BRAKE DISC .
Loosen the ANTI-ROLL BAR LINK ON THE WHEEL CARRIER.
Loosen SHOCK ABSORBER ON CAMBER ARM.
Loosen CAMBER ARM ON WHEEL CARRIER.
Loosen STEERING ARM ON WHEEL CARRIER.
Loosen UPPER WISHBONE ON WHEEL CARRIER.
Loosen CONTROL ARM ON WHEEL CARRIER.
Loosen TRAILING ARM ON WHEEL CARRIER.

Suspension

Remove wheel carrier including output shaft.

IMPORTANT: Check sensor head and line from pulse sensor prior to installation for external damage, replacing if necessary.

Replacement:

Press OUTPUT SHAFT out of drive flange.
Modify BRAKE ANCHOR PLATE/BRAKE GUARD PLATE . Replace if necessary.
Modify WHEEL BEARING with drive flange. Replace if necessary.

After installation:

Replacement: Carry out wheel alignment procedure .

Control arms and struts

OVERVIEW OF STEERING LINKS ...

Removing and installing/replacing left or right camber arm

IMPORTANT: If the camber arm is bent, the control arm/wheel carrier screw connection must be renewed. NOTE: If the camber arm is renewed, th ...

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