Compressor Assembly, Air Suspension: Installation: Installation
All pressurized air suspension components contain high pressure air (up to 220 psig). Use extreme caution when inspecting for leaks. Wear safety goggles and adequate protective clothing when inspecting or servicing the air suspension system. A sudden release of air under this amount of pressure can cause possible serious or fatal injury.
Support the vehicle by supplemental means before performing any work on the air suspension system to prevent the vehicle from changing height. Before any given component is to be serviced it must be deflated. Servicing the air suspension system without supplemental support, or with pressure in the specific component, can cause possible serious or fatal injury.
When removing an air line from a component and the air line is to be reused, do not remove the 90° fitting or the brass fitting from the air line. If either is removed, the air line must be replaced. New components have air line fittings attached; however if the original air line is used the original fitting must also be used. Do not remove protective caps or plugs from air lines or components until ready to install the air line to prevent moisture or dirt intrusion. All air line fittings must be hand started to avoid cross threading.
When handling the air suspension compressor assembly, keep upright and carry only by the compressor itself or the primary bracket (bolts the assembly to the vehicle).
- Position the compressor in the vehicle and install the front compressor bracket bolts (1). Tighten the front compressor bracket bolts to the proper specification. Refer to SPECIFICATIONS .
- Install the rear air compressor bracket bolts. Tighten the rear air compressor bracket bolt to the proper specification. Refer to SPECIFICATIONS .
- Connect the air compressor wiring harness connectors (1) and attach the harness clips to the frame.
- Connect the retainers (1, 3) routing the suction and rear feed lines to bracket.
- Position the air suspension hose assembly into the retainers (2). Install the air suspension hose assembly (1).
- Install the reservoir feed line (1) and the rear air spring feed lines (2, 3).
- Lower the vehicle.
- Connect the negative battery cable.
- Using a scan tool, under the Air Suspension Control Module (ASCM), and using an Air Suspension Refill Tool - (special tool #10247B, Tool, Air Suspension Refill), perform the Complete System Fill procedure. Refer to STANDARD PROCEDURE .
- Using a soap and water solution, check the air fittings for leaks.
- Perform the ASCM Verification Test. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
Keep the air suspension compressor assembly upright and only carry the compressor by the compressor bracket.
Before filling the system, make sure vehicle is at normal ride height, to avoid air spring damage.
For 2500 model vehicles, inspect the top of each air spring to frame alignment. Air spring deflation may cause the top of the air springs to become disengage from the frame.