BMW 7 Series: Lowering/Raising Rear Axle Support
Notes
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.
Necessary preliminary tasks
- Remove REAR WHEELS
- F03 only: Remove underguard, side
- Remove EXHAUST SYSTEM
- Remove PROPELLER SHAFT from rear axle
- Expose CABLE FOR EMERGENCY RELEASE UP TO REAR AXLE CARRIER
- Release and disconnect PLUG CONNECTION ON ACTUATING UNIT (EMF)
- REMOVE BOTH BRAKE CALLIPERS ON WHEEL CARRIER and tie back
- 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
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 by toothing.
Insert special tools 31 5 253 in telescopic supports of other profile rail pair.
.png)
Fig. 76: Inserting Special Tools (31 5 255) In Telescopic Supports Of Profile
Rail Pair
Version without Dynamic Drive:
The jacking points on the left side are shown.
Align special tool 31 5 255 with opening in rear suspension subframe.
Align special tool 31 5 253 with cross-member arms on rear suspension subframe.
.png)
Fig. 77: Aligning Rear Suspension Subframe Using Special Tool (31 5 255) And
(31 5 253)
Version with Dynamic Drive and Integral Active Steering:
Schematic diagram of rear mounting point (link side) for special tool 31 5 253.
The front mounting point for special tool 31 5 255 is identical - version without Dynamic Drive.
.png)
Fig. 78: Schematic Diagram Of Rear Mounting Point For Special Tool (31 5 253)
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.
.png)
Fig. 79: Identifying Arrow, Front Compression Strut, Screws And Stop Plate
F03 only: Remove FRONT COMPRESSION STRUTS (1).
Remove rear tension struts (2) and carefully lower rear axle carrier.
.png)
Fig. 80: Identifying Front Tension Struts And Rear Tension Struts
After installation
- ADJUST PARKING BRAKE
READ NEXT:
Removing And Installing Complete Rear Axle Support
Notes
IMPORTANT: Before removing rear axle support:
In order to avoid damage to vehicle hoist, perform weight compensation on
vehicle.
Load luggage compartment with sand bags.
Necessary preliminary w
Replacing Rear Axle Support
IMPORTANT: Before removing rear axle support:
In order to avoid damage to vehicle hoist, perform weight compensation on
vehicle.
Load luggage compartment with sand bags.
Necessary preliminary work
SEE MORE:
Repair Work On GFP Components With Gelcoat Surface
Scratches in Gelcoat surface
Scratches in the Gelcoat surface which do not allow the GFP mat structure to
show through can be touched up.
Sand out scratches with water and 800 wet sandpaper. Then sand with water and
2000 wet sandpaper. Prepare
repair area for polishing.
Cracks in Gelcoat surface
Replacing Rear Left Or Right Spring Strut Shock Absorber
WARNING: Prior to each use of special tool 31 3 340, it is essential to
read the
associated Owner's Handbook fully!
All the safety information and instructions contained in the Owner's
Handbook must be strictly observed!
Failure to observe these safety precautions and instructions increases
the ris
