13/06/2023 14:19:30
Air Spring Module - Rear - LH (Remove and Replace)
Correction Code 31106002
The below procedure is for models with air suspension built
before April 24, 2019. For models equipped with adaptive damping built from April 24, 2019,
refer to Adaptive Air Spring Module - Rear - LH (Remove and Replace).
Note
When replacing an air spring module for
failure, inspect all air spring modules for leak, wear, or reduced performance, and
replace them as necessary.
Removal
-
Remove the rear center apron and inspect the vehicle for a Schrader fill valve on the RH shock tower. See
Underhood Apron - Center - Rear (Remove and Replace).
- If the vehicle does not have a Schrader fill valve, install it now. See Fill Valve - Air (Retrofit). Then continue to the next step.
- If the vehicle has a Schrader fill valve, continue to the next step.
- Raise the vehicle and depressurize the rear LH air spring module. See Air Suspension - Pressurize/Depressurize - One Air Spring.
- Remove the rear LH arch liner. See Wheel Arch Liner - Rear - LH (Remove and Replace) .
-
Release the fitting for the air suspension line (brown) from the rear LH air spring module (torque 2 Nm).
-
For each released end of an air suspension line, use a flat blade screwdriver to snap off the old collet, and discard the collet and nut (VOSS fitting).
- Use a stand to partially support the rear LH suspension.
- Remove the bolt that secures the air spring module to the knuckle (torque 140 Nm).
- Remove the stand and lower the vehicle to a working height.
- Remove the upper LH parcel shelf support. See Support - Parcel Shelf - LH (Remove and Replace) .
-
Remove the foam HVAC ducting.
- Remove any insulation that covers the nuts that secure the air spring module.
- Remove the nuts (x3) (torque 39 Nm).
- Carefully remove the air spring module from the vehicle.
Installation
CAUTION
Replace all nylon-insert
locknuts.
CAUTION
Replace all patchbolt(s).
Note
Clean the affected areas before
installation.
CAUTION
Only fully tighten suspension nuts
and bolts when the vehicle is on a 4-post lift and the suspension is in the ride
height position.
Installation procedure is the reverse of removal, except for the following:
-
Install and hand-tighten a new collet and nut (VOSS fitting).
NoteA plastic plug holds the fitting together before and during installation.
- Remove the plastic plug from the new fitting.
- Tighten the new fitting (torque 2 Nm).
- Insert the air suspension line fully into the fitting, and then lightly pull on the line to make sure that it is secure.
- Make sure that all air suspension lines are securely reconnected before continuing.
-
Refill the new air spring module
or air suspension system according to the circumstances of the repair:
- The rear LH air spring module was replaced for noise: Inflate the individual air spring with the assisted nitrogen inflate routine for that corner.
- The air spring was replaced for a leak: purge the entire system.
- Raise the vehicle on a 4-post lift and torque all suspension components while the vehicle is at ride height.
- Refer to the Alignment Requirement tables to determine whether an EPAS alignment check (EC) or four wheel alignment check (AC) is necessary. If performed, add the alignment check/adjust as a separate activity. See Alignment Requirement - Suspension.