Front Air Lines

FRONT AIR LINES

WARNING:
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.

WARNING:
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.

CAUTION:
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.

CAUTION:
Pay special attention to the air line/bundle routing during the removal process for proper routing during installation. The air lines must be routed the same when installed AND connected to all routing clips during installation or a leak may result.

NOTE:
The front and rear air lines are serviced as a complete unit.

NOTE:
New fittings must be used with new air lines, and new air lines do not include new fittings.

1. Raise and support the vehicle Service and Repair.

2. With a scan tool, using the routines under the Air Suspension Control Module (ASCM), perform the following:

- Deflate the complete system to atmosphere.

- Disable the air suspension system.

3. Disconnect and isolate the negative battery cable Battery Cables - Removal.

4. Remove the tires and wheels.

5. Remove the wheelhouse inner liners





6. Remove the air spring air lines (2) at the valve block (5).

7. Lower the vehicle enough to access the lines at the air springs.






CAUTION:
Only remove the air line fitting (hex portion) and not the Pressure Retention Valve (round portion) of the brass assembly on top of the air suspension spring and shock assembly. Removing and reinstalling the valve (round) part of the assembly may cause a leak.

8. Disconnect the air lines/fittings (2) from both front air suspension spring and shock assemblies.





9. Disconnect the air lines/fittings (1) from both rear air suspension spring assemblies.

10. Remove the air line routing clips that are attaching the air line bundle to the frame.

11. Paying attention to the air line bundle routing, remove the front and rear air line bundle from the vehicle.