Front Air Lines

FRONT AIR LINES

Special Tools:






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:
The air lines/bundle must be routed the same when installed AND connected to all routing clips during installation or a leak may result.

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

1. Install the air line bundle in the vehicle by routing the lines along the frame and attaching the routing clips.

NOTE:
The air lines must be connected to all routing clips during installation.





2. Install a new air line fitting on each rear spring to 3.5 Nm (31 in. lbs.).

3. Install the air lines to the two rear air spring assemblies by pushing the line straight into the fitting (1) until seated, then pulling to verify it is seated.





4. Install a new air line fitting on each spring and spring/shock assembly and tighten to 5 Nm (44 in. lbs.).

5. Install the air lines to the two front air spring and shock assemblies by pushing the line straight into the fitting (2) until seated, then pulling to verify it is seated.





6. Install a new air line fitting on each of the four air spring air lines (2) on the valve block (5) and tighten to 5.5 Nm (49 in. lbs.).

NOTE:
The air lines are color coded with tape for identification. Match the tape colored tape to the color on the valve block.

7. Remove the protective caps and install the correct air lines to the four air spring air line positions (2) on the valve block (5) by pushing the line straight into the fitting (4) until seated, then pulling to verify it is seated.

8. Install the wheelhouse inner liners.

9. Install the tires and wheels .

10. Connect the negative battery cable Battery Cables - Installation.

11. With a scan tool, under the Air Suspension Control Module (ASCM), and using the (10247), perform the Complete System Fill procedure Complete System Fill.

12. Perform the ASCM Verification Test. ASCM Verification Test