33 31 503 Lowering/ Raising Rear Axle Carrier
33 31 503 Lowering/ Raising Rear Axle CarrierSpecial TOols Required:
- 33 4 420
Warning!
Danger of injury!
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 information on load distribution in the lifting platform operating instructions.
Before lowering/ removing the rear axle carrier, it is essential to place a minimum load of 100 kg. in the luggage compartment to prevent the vehicle from toppling/ slipping off the lifting platform!
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
NOTE:
If the rear axle carrier is detached from the body, it is necessary after reinstallation to carry out a wheel/ chassis alignment check.
After Installation:
- Perform chassis alignment check
Necessary Preliminary Tasks:
- Convertible: Remove tension strut
- M3: Remove V-strut
- Compact: Remove holder for emergency wheel
- Remove stabilizer from rear axle carrier
- Remove propeller shaft from rear differential and tie back
- Unclip handbrake Bowden cables in tunnel
- If necessary, disconnect plug connection from ride-height sensor
- Vehicle with diesel engine: Remove vibration damper with bracket from rear differential
Support rear differential with workshop jack and special tool 33 4 420.
IMPORTANT!
Obeserve gap between special tool 33 4 420 and dust plates (1).
To avoid grinding noises, make sure the dust plates (1) are not damaged (e.g bent).
Remove tension strut.
Release screws and remove stop plate.
Lower rear axle carrier.
NOTE:
Check threads for damage; if necessary, repair with Helicoil thread inserts.
Check seating of coil springs with spring pads, correct if necessary.
Installation:
Check threads on threaded pins; if necessary, replace damaged threaded pins.
Torque Specs:
