Replacement

REMOVAL
1. Turn air suspension switch OFF.
2. Raise vehicle on a hoist. Suspension must be fully down with no load.
3. Remove heat shield as required.
4. Remove rear air spring retainer.

WARNING: DO NOT REMOVE AN AIR SPRING UNDER ANY CIRCUMSTANCES WHEN THERE IS PRESSURE IN THE AIR SPRING. DO NOT REMOVE ANY COMPONENTS SUPPORTING AN AIR SPRING WITHOUT EITHER EXHAUSTING THE AIR OR PROVIDING SUPPORT FOR THE AIR SPRING TO PREVENT PERSONAL INJURY.

5. Remove air spring solenoid valve.

Removing Air Spring:

6. Remove spring piston-to-axle spring seat.
a. Insert Air Spring Remover T90P-5310-A between axle tube and spring seat on forward side of axle.
b. Position tool so that its flat end rests on air spring piston knob. Push downward, forcing piston and retainer clip off of axle spring seat.
7. Remove rear spring.
8. Inspect air spring piston retainer clip. Piston Retainer Clip

INSTALLATION
1. Install rear spring solenoid valve.
2. Install rear spring into frame spring seat, taking care to keep solenoid valve air and electrical connections clean and free of damage.
3. Connect push-on ring rear air spring retainer to knob of spring cap from top side of frame spring seat.
4. Connect air line and electrical connector to solenoid valve assembly.
5. Install heat shield to frame rear spring seat, if required.
6. Align air rear spring piston to axle seats. Squeeze to increase pressure and push downward on piston, snapping piston to axle seat at rebound and supported by shock absorber.

CAUTION: Air rear springs may be damaged if suspension is allowed to compress before spring is inflated.

7. Refill air rear springs.