Compressor/Pump: Service and Repair

Air Suspension Compressor

Removal

WARNING: Steps 1 and 2 must be carried out within 10 minutes of each other, failure to follow this instruction may result in personnel injury.

CAUTION: If a new air suspension compressor, air compressor drier or air compressor delivery valve kit is installed due to failure, an air compressor relay must be installed. Failure to follow this instruction may result in damage to the air suspension system components.
1
CAUTION: Make sure the ignition switch is turned off, the park brake is on and the selector lever is in park position.
Open the front door.
2
WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
Raise and support the vehicle, make sure at least one of the wheels is off the ground.




3 Remove the air suspension compressor lower cover.
- Remove the bolt.
- Release the 5 clips.




4
CAUTION: Always plug any open connections to prevent contamination.
NOTE:
Access to the top compressor fixing bolt is very restricted. It is advisable to use a 3/8 inch drive socket with a flexible coupling.
Remove the air suspension compressor.
- Disconnect the 3 air lines.
- Disconnect the 2 electrical connectors.
- Remove the 3 bolts.

Installation
1
CAUTION: Make sure that the wiring harness and the air suspension pipes are not trapped behind the air suspension compressor bracket.
CAUTION: Make sure the air suspension compressor upper cover is correctly positioned.
NOTE:
Install the upper retaining bolt, but do not fully tighten, before installing the 2 lower retaining bolts.
Install the air suspension compressor.
- Tighten the bolts to 23 Nm (17 lb.ft).
- Connect the air lines.
- Connect the electrical connectors.
2
CAUTION: Make sure the air suspension exhaust pipe is correctly located in to the air suspension upper cover.
CAUTION: Make sure the air suspension compressor upper cover is correctly positioned.
Install the air suspension compressor lower cover.
- Install the bolt and tighten to 9 Nm (7 lb.ft).