Replacing Air Supply Unit

37 22 540 - Replacing air supply unit





Important!
Danger of injury!
Drain the air spring system before carrying out any work on the air supply unit, air pipes and air spring struts! Danger of injury if this instruction is not complied with!
Risk of damage!
Extreme cleanliness must be ensured in the connection area of the pipes during removal and installation. Even the smallest of dirt particles can cause leakage in the air spring system.

Note:
Read and comply with notes on air spring system Notes on Air Spring System.

After installation:
- Activate and fill air suspension system Draining/Filling Air Spring System





Necessary preliminary tasks:
- Deactivate and drain air spring system Draining/Filling Air Spring System

- Remove spare wheel





Important!
Do not kink, twist or crush lines.





Unclip plug housing (1) and pipe connection (2).
Expose wiring air supply unit wiring harness up to air supply unit (3).
Unfasten screws.
Tightening torque 37 22 1AZ Pump Unit With Reservoir.
Remove air supply unit (3).