33 31 503 Lowering/raising rear axle support (SWZ00-2040)
Special tools required:
Failure to comply with the following instructions may result in the vehicle slipping off the lifting platform and critically injuring other persons.
Read and observe the notes on permissible load distribution in the Owner's Handbook, vehicle hoist.
Load the luggage compartment with a minimum of 100 kg before lowering/removing the rear axle support.
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 lifting platform
This repair work may only be carried out on an exhaust system which has cooled down.
Necessary preliminary tasks
- Remove both REAR COIL SPRINGS .
- If necessary, remove trailing link (s).
Press brake pedal down to floor and secure with pedal support.
This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.
Position an oil sump underneath to catch brake fluid.
Release banjo bolts (1), counter supporting brake hoses (2) at square head in the process.
Disconnect brake hoses (2) and seal off with seal plugs.
Installation note:
Make sure brake hoses are laid without tension and with sufficient distance to adjoining components.
Tightening torque 34 32 1AZ .
Unclip cable for pulse sensor and ride height sensor/brake pad wear sensor on side of rear axle support.
Slacken nut (1).
Turn holder (2) for exhaust system towards rear.
Release sheet metal nuts and bolts (arrows).
Place heat shield on exhaust system.
If necessary, position special tool 00 2 040 with 2nd person helping on workshop jack 00 2 030 .
Insert special tools 33 4 491 and 33 4 492 into corresponding mountings of special tool 00 2 040 .
Lower special tool 33 3 274.
Align special tools 33 4 491 and 33 4 492 to rear axle support.
Support rear axle support by operating workshop jack 00 2 030 .
Remove COMPRESSION STRUTS (1).
Release screws (2) and swivel/remove stop plates to one side.
Lower rear axle support.
Installation note:
Observe screw length.
If necessary, a longer screw (with shim) can be installed on rear left!
Check threads for damage; if necessary, repair with HELICOIL THREAD INSERTS .
First fit COMPRESSION STRUTS (1), then tighten screws (2).
Tightening torque 33 33 1AZ .
After installation:
- Bleed BRAKING SYSTEM