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Home >> BMW >> 2018 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 445 (Rear Axle - Repair) >> Rear Sub-Frame >> 33 31 011 Replacing rear axle support

33 31 011 Replacing rear axle support

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WARNING: Danger of injury!
Failure to comply with the following instructions may result in the vehicle slipping off the vehicle hoist and critically injuring other persons.
Load the luggage compartment with a minimum of 100 kg before lowering/removing the rear axle support. This prevents the vehicle from tilting or sliding off the vehicle hoist!
When supporting components, make sure that:
  • the vehicle can no longer be raised or lowered
  • the vehicle does not lift off the locating plates on the vehicle hoist.
IMPORTANT: Before lowering/removing rear axle support:
Observe SAFETY INFORMATION for raising the vehicle
In order to avoid damage to vehicle hoist, perform weight compensation on vehicle.

Necessary preliminary work: 

Release RIDE HEIGHT SENSOR WITH JOINTED ROD ON REAR AXLE SUPPORT .

Release both ANTI-ROLL BAR LINKS AT ANTI-ROLL BAR .

Fig 1: Identifying Anti-Roll Bar Links At Anti-Roll Bar
G09947151Courtesy of BMW OF NORTH AMERICA, INC.

Release both CAMBER ARMS ON REAR AXLE CARRIER .

Release both TOE LINKS ON REAR AXLE CARRIER .

Release both TRAILING ARMS ON REAR AXLE CARRIER .

Release both CONTROL ARMS ON REAR AXLE CARRIER .

Release both WISHBONES ON REAR AXLE CARRIER .

Remove both wheel carriers with output shaft, all arms, anti-roll bar link and brake disc.

Release ANTI-ROLL BAR .

Fig 2: Removing Wheel Carriers With Output Shaft
G09947152Courtesy of BMW OF NORTH AMERICA, INC.

Take rear axle support down from special tool with assistance of a 2nd person and set down on a suitable surface.

Installation note: 

Use previous rear axle support as a template for modifying or replacing small parts.

Fig 3: Identifying Rear Axle Support
G04794602Courtesy of BMW OF NORTH AMERICA, INC.

After installation: