Air Spring: Service and Repair

REPLACEMENT
1. REMOVE PNEUMATIC CYLINDER ASSY RR LH

NOTICE: To prevent foreign matters from entering, perform the operation with bare hands. Do not damage the height control valve.

a. Support the rear axle housing.
b. Remove the clip from the pneumatic cylinder assy RR LH.

HINT: Pull a wire passing it through the clip hole.





c. Disconnect the air tube from pneumatic cylinder assy RR LH.
SST 09730-00010
d. Shorten the pneumatic cylinder assy RR LH.





e. Turn the pneumatic cylinder to 90° and remove it upward.

NOTICE: Do not extend the pneumatic cylinder assy.

HINT: If the pneumatic cylinder assy is to be reused, 2 new O-rings as well as a new plate and height control plug must be used.

2. INSTALL PNEUMATIC CYLINDER ASSY RR LH





a. Install the pneumatic cylinder with the clip to the frame.
b. Connect the height control tube.





c. When using safety stands and jack:
(1) Jack up the rear axle assy until the bottom of the pneumatic cylinder assy touches the rear axle assy and install the clip at the lower side of the pneumatic cylinder assy into the keyhole in the rear axle assy.

NOTICE:
- Do not extend the pneumatic cylinder assy for clip installation.
- Make sure that the clip at the lower side of the pneumatic cylinder assy fits in the keyhole in the rear axle assy.

(2) Remove the safety stands with care not to extend the pneumatic cylinder assy when jacking down the vehicle till it sits on the ground.

NOTICE:
- Do not extend the pneumatic cylinder assy by lowering the rear axle assy with safety stands installed.
- Make sure that the diaphragm of the pneumatic cylinder assy is not deformed.

d. When using a swing arm type lift:
(1) Lower the vehicle till the tires hit the ground, and continue lowering slowly until the bottom of the pneumatic cylinder assy touches the rear axle assy.
(2) Align the seating pin on the cylinder with the keyhole in the rear axle assy and install the pneumatic cylinder assy on the rear axle assy.
(3) Lower the lift carefully so as not to extend the pneumatic cylinder assy.

NOTICE:
- Do not extend the pneumatic cylinder assy by lifting up the rear axle housing after installing the clip.
- Make sure that the diaphragm of the pneumatic cylinder assy is not deformed.

e. Start the engine and replenish the pneumatic cylinder assy with air.

3. INSPECT AIR LEAK
4. INSPECT VEHICLE HEIGHT