72
2.
Shock Absorber Replacement:
Shock absorbers remove energy from the
suspension system as the trailer encounters holes
and bumps on the road surface. They also act as
a stop for the air springs to prevent the axle from
moving too far away from the frame and tearing
or damaging the air spring.
a. Remove the upper and lower mounting bolts.
b. Remove old shock and install new one.
c. Secure shock by tightening mounting bolts to
their specified torque of 250 ft. lbs. (338 N.m).
IMPORTANT
Use only correct manufacturer specific
components replacement parts.
Substitute parts do not work with the
suspension system.
3.
Pivot Bushing:
For pivot bushing replacements please see your
dealer or trailer repair shop.
5.2.12 SUSPENSION SYSTEM (cont'd)
5.2.12.1 AIR RIDE SUSPENSION (cont'd)
Typical repairs include but are not limited to:
1.
Air Spring Replacement:
Air springs are designed to be virtually trouble-
free throughout their life. Problems seldom occur
unless they are cut, punctured, abraded, pinched
or torn and then they must be replaced.
a. Block the wheels to prevent trailer movement.
b. Exhaust air from the suspension system.
c. Raise and support the frame on safety
stands.
d. Disconnect the air lines to the air spring(s).
NOTE
Do not raise frame too high unless shock
absorbers are installed to prevent over-
extending the air spring.
e. Loosen mounting bolts and remove air
spring(s).
f. Install new air spring(s).
g. Tighten mounting bolts to their specified
torque of 50 ft. lbs. (68 N.m).
h. Install air lines and tighten to their specified
torque.
i. Repeat on other air springs.
j. Remove stands from under frame.
