33 31 000 Removing and Installing Complete Rear Axle Carrier

33 31 000 Removing and installing complete rear axle carrier





Special tools required:
^ 00 2 030
^ 31 5 251
^ 31 5 253
^ 31 5 255
^ 32 1 270





Important!
Before lowering rear axle support:
Observe safety instructions on raising the vehicle.
In order to avoid damage to lifting platform, perform weight compensation on vehicle.
Load luggage compartment with sand bags.

Important!
Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Do not draw off hydraulic fluid (risk of contamination).
Close off pipe connections with plugs.32 1 270





Necessary preliminary tasks:
^ Remove rear wheels
^ Remove exhaust system
^ Remove propeller shaft from rear axle
^ Remove Both brake calliper mounting brackets and tie up
^ Unlock Plug connections Integral_Aktivlenkung and disconnect
^ Unclip lines for pulse generator and brake pad wear sensor from brackets
^ Unlock and disconnect plug connection on both ride height sensors
^ Remove both spring struts from wheel carrier

Version with Dynamic Drive:
Release screws (1) and remove pressure lines from oscillating motor.

Tightening torque 37 13 4AZ.

Seal pressure lines and connections of swivel motor with clean sealing plugs 32 1 270.








Engage 31 5 251 with a 2nd person helping completely on workshop jack 00 2 030.

Insert special tools 31 5 255 in telescopic supports of a profile rail pair.

Note:
In a profile rail pair, two profile rails are connected to each other by toothing.

Insert special tools 31 5 253 in telescopic supports of other profile rail pair.





Version without Dynamic Drive:
The jacking points on the left side are shown.

Align special tool 31 5 255 to opening in rear axle support.

Align special tool 31 5 253 to cross-member arms on rear axle support.





Version with Dynamic Drive and integral activation:
Illustration of the rear holding point (left side) for the special tool 31 5 253.

The front holding point for the special tool 31 5 255 is identical - version without Dynamic Drive.





Release screws (4).

Tightening torque 33 33 1AZ.

Installation:
Arrow (1) on stop plate (2) must point in direction of travel!

Remove front compression struts (3).

Carefully lower rear axle carrier.





After installation:
^ Carry out start-up of integral active steering with aid of BMW diagnosis system (see Service function/Deflection test)
^ Fill and bleed hydraulic system
^ Check line connections for leaks
^ If necessary, carry out initial Dynamic Drive operation

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