The suspension cylinder weighs approximately 85 pounds (39 kg) empty. Two
people must be used to lift suspension cylinder out of the lower suspension arm or
injury to personnel may result.
If necessary, lower hydraulic floor jack (1) and, using two people, remove suspension cylinder (6) from lower
suspension arm (2).
Remove and discard two ring spacer assemblies (39) from suspension cylinder (6) or lower suspension arm (2).
Mark location of hose clamp (40) on two air hoses (11). Remove locknut (41), washer (42), and hose clamp (40)
from axle (33). Discard locknut.
Tag and disconnect two air hoses (11) from elbow fittings (43) on brake chamber (44).
Remove two air hoses (11) from lower suspension arm (2). Install caps/plugs into openings/fittings. Cut and
remove electrical tiedown straps (24) from loom (26) if necessary, and remove loom (26) from each air hose (11).
Cleaning compound solvent is used to clean parts and is potentially dangerous to
personnel and property. Extinguish all smoking materials, and do not allow sparks
or open flames near the work area. Use skin and eye protection and work in a well-
Using degreaser tank with cleaning compound solvent, clean suspension cylinder, upper and lower suspension
arms, upper and lower pins, and attaching hardware. Crocus cloth may be used to remove any excess buildup on
upper or lower pins.
Use a 1/8-inch (0.3 cm) wire to work dirt out of lubrication fitting and grease holes in center and at end of lower
Clean bore of bearings in cylinder with a crocus cloth and solvent. Use welding tip cleaner set to clean out two
grease holes and grease groove in bore of bearing.
After bearings and pin have been cleaned, install lubrication fitting into lower pin and install lower pin into lower
cylinder bearing. Use lubricating handgun to apply grease to lubrication fitting. If grease does not come out
between spherical bearing and outer shell of bearing, more cleaning is necessary.