Trailer Suspension System Components and General Maintenance Guidelines ConƟnued
AIR SPRINGS - Air springs will last almost indefinitely in most applicaƟons. However air springs will fail quick- ly when rubbed, scuffed, or punctured. If an air spring fails, the trailer will seƩle on the internal rubber bumpers, so you can proceed to the nearest service facility at a lower speed. You should try to determine the cause of a failure, so you can avoid a costly repeat of the problem. Air Spring Replacement To replace an air spring, follow these steps:
1. Exhaust all air from the suspension system. 2. Raise and support the vehicle in a safe manner. 3. Unbolt the air spring. 4. Disconnect air-supply lines. 5. Replace the air spring.
6. Bolt the air spring in place. 7. Connect the air-supply lines. 8. Lower the trailer to the ground. 9. Supply air to the suspension system.
SHOCK ABSORBER - Shock absorbers absorb energy to prevent suspension oscillaƟon. Shock absorbers are also rebound stops in most air suspensions. The shock absorber limits the stroke of an air spring, which pre-
vents the air spring from being pulled apart. To remove a shock absorber, follow these steps: 1. Remove the end fasteners. 2. Insert the new shock absorber. 3. Secure with correct size locknut and bolts. 4. Torque fasteners to specificaƟon.
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