Front Shock Absorber and Spring Removal and Installation - Left Side (F47)

Front Shock Absorber and Spring Removal and Installation - Left Side (F47)

Warning

If the air lines need to be removed to perform repairs on any air suspension components, depressurize the Automatic Level Control System. This will prevent vehicle damage or personal injury.

Warning

Do NOT remove Automatic Level Control System components under any circumstances when the system is pressurized. Disconnecting a pressurized air line that is connected to an Automatic Level Control System component can cause damage to components or personal injury. Removal Procedure

Note

Service mode will be automatically enabled when the ride height sensors detect the vehicle has been lifted off the ground. Service mode will automatically be disabled when the vehicle reaches 16 km/h(10 MPH).

1. Raise the vehicle until the tires are off the ground. Lifting and Jacking the Vehicle
2. Using the scan tool, deflate the air spring that will be serviced.
3. Remove the front tire and wheel assembly. Tire and Wheel Removal and Installation

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 1

4. Disconnect the electrical connector for the electronic suspension wheel front vertical accelerometer (1) and the front air shock harness electrical connector (2).

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 2

5. Unclip and reposition the chassis wiring harness bracket (1) away from the frame shock tower.

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 3

6. Disconnect the air line nut (1) and position the air line aside.

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 4

7. Front Shock Absorber Nut (1) » Remove [3x]

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 5

8. Front Shock Absorber Bolt (1) » Remove [2x]

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 6

9. Front Shock Absorber (1) » Remove Installation Procedure

Note

Prior to installing the front shock absorber, you MUST apply anti-corrosion wax to the frame shock tower.

1. Apply anti-corrosion wax to the frame shock tower. Anti-Corrosion Treatment and Repair
2. Support the front shock absorber using a suitable jack stand.

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 7

3. Reposition the air line, then install and tighten the air line nut (1). Fastener Specifications

4. Front Shock Absorber (1) » Install

5. Front Shock Absorber Nut (1) » Install and tighten [3x] — Fastener Specifications

6. Remove the front shock absorber support.

Caution

Refer to Fastener Caution.

7. Front Shock Absorber Bolt (1) » Install and tighten [2x] — Fastener Specifications

8. Reposition and install the chassis wiring harness bracket (1) to the frame shock tower.

9. Connect the electrical connector for the electronic suspension wheel front vertical accelerometer (1) and the front air shock harness electrical connector (2).

10. Install the tire and wheel assembly. Tire and Wheel Removal and Installation

Front Shock Absorber and Spring Removal and Installation - Left Side (F47) — figure 8

11. Remove the automatic level control air supply reservoir air valve cap (1).
12. Install CH-52667 Air Spring Inflator to the automatic level control air supply reservoir air valve (2) and set the regulator on the nitrogen tank to 16 Bar (232 PSI).
13. Using CH-52667 Air Spring Inflator, open the valve on the pressure gage to fill the automatic level control air supply reservoir.
14. Using CH-52667 Air Spring Inflator and the shop nitrogen tank, fill the automatic level control air supply reservoir to 16 Bar (232 PSI).
15. Close the pressure gauge valve and remove CH-52667 Air Spring Inflator from the automatic level control air supply reservoir.
16. Install the automatic level control air supply reservoir air valve cap (1) and tighten. Fastener Specifications.
17. Partially lower the vehicle, but DO NOT let the wheels touch the ground.
18. Using GDS2 tool, use short-term inflate to increase pressure to the air springs: Front: 6 Bar (87 PSI) Rear: 5 Bar (73 PSI)
19. Using GDS2, verify automatic level control air supply tank pressure is at 16 Bar (232 PSI), if not repeat steps 11 - 16.
20. Remove the support and lower the vehicle.
21. With the vehicle off the hoist and on flat level ground, use the scan tool to reset trim heights. Trim Height Inspection