Rear Air Spring Compressor Replacement

Rear Air Spring Compressor Replacement

Removal Procedure

1. Raise the vehicle enough so that all 4 tire assemblies are off the ground. Refer to Lifting and Jacking the Vehicle Service and Repair.

Warning

Do NOT remove an air compressor tube in an attempt to depressurize the air suspension. Always follow the Air Suspension Depressurization Procedure in Air Suspension. Failure to follow this procedure may cause personal injury or damage to the air compressor and/or air spring tube fittings.

2. Depressurize the air suspension system. Refer to Air Suspension System Depressurization and Pressurization Procedures.

3. Raise the vehicle to suitable working height.





Caution: Ensure that you depress both plastic tabs that hold the air compressor filter into the frame rail while removing; failure to do so will result in damage to the air compressor filter.

4. Depress both plastic tabs securing the air compressor filter into the frame rail during removal.

5. Using an appropriate tool, remove the air compressor filter (1) from the frame rail.




6. Disconnect the air suspension compressor air fittings (1).




7. Disconnect the air suspension compressor electrical connector (1).




8. Remove rear air spring compressor bolt (1).




9. Remove the rear air spring compressor nuts (3) and (1).

10. Remove the rear air spring compressor (2) from the vehicle by sliding the compressor assembly rearward.

11. Inspect the rear air spring compressor bracket insulators, replace if necessary. Refer to Rear Air Spring Compressor Bracket Insulator Replacement Rear Air Spring Compressor Bracket Insulator Replacement.

Installation Procedure




1. Install the rear air spring compressor (2) stud into the frame rail and slide the rear air spring compressor assembly (2) forward.

Caution: Refer to Fastener Caution Fastener Caution.

2. Install the rear air spring compressor nuts (1) and (3) , do NOT fully tighten.




3. Install the air suspension compressor bolt (1) and tighten to 22 Nm (16 lb ft).

4. Tighten the rear air spring compressor nuts to 22 Nm (16 lb ft).




5. Install the air suspension compressor filter tube (1).




6. Connect the air suspension compressor electrical connector (1).





Caution: Do NOT exceed the torque value on the air supply fitting, over tightening may cause the plastic threads in the air compressor or the air spring to become stripped, permanently damaging the air spring compressor or air spring.

7. Install the air suspension compressor air line fittings (1) and tighten to 2 Nm (18 lb in).

Caution: Do NOT pressurize the air springs under load or damage to the air spring will occur. Always pressurize the system with the wheels of the vehicle off the ground.

8. Lower the vehicle, but DO NOT allow the 4 tire assemblies to touch the ground.

9. Pressurize the air suspension system. Refer to Air Suspension System Depressurization and Pressurization Procedures.

10. Check the air suspension compressor tube fitting at the compressor assembly for leaks.

11. Continue to lower the vehicle.

12. Start the vehicle and run for approximately (1) minute to ensure the air spring is completely pressurized and functioning properly.