Air Springs-3500
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.
- Position the air spring in the vehicle and connect the air line. Tighten the air line nut to the proper specification. Refer to SPECIFICATIONS .
- Position the air spring on the lower seat and install the lower air spring nuts (1). Tighten the lower air spring nuts to the proper specification. Refer to SPECIFICATIONS .
- Install the two upper air spring bracket bolts. Tighten the upper air spring bracket bolt to the proper specification. Refer to SPECIFICATIONS .
- Lower the vehicle but do not load the air spring until partially inflated and properly seated.
- With a scan tool, using the routines under the Air Suspension Control Module (ASCM), carry out the following:
- Run the Fill Spring From Reservoir routine on the spring that was installed. Choose the Short Time Fill option from the menu selections and the spring will inflate for approximately one second, then verify the air spring is properly seated into its mounting locations, and any wrinkles in the air bag have unfolded properly.
- Run the Fill Spring From Reservoir routine on the spring that was installed. Choose the Complete Fill option from the menu selections.
- Lower the vehicle to the ground.
- With a scan tool, using the routines under the Air Suspension Control Module (ASCM), carry out the following:
- Command the vehicle to Normal Ride Height.
- Enable the air suspension system.
- Perform the ASCM Verification Test. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .