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The tandem rear axle air suspension ride height rises above normal as the vehicle is unloaded. Which of these could be the cause?

(A) A kinked air spring (bag) supply line
(B) A leaking height control valve (C) A plugged height control valve exhaust port
(D) A leaking pressure protection valve

User Vertigo
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1 Answer

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Final answer:

The cause of the tandem rear axle air suspension ride height rising above normal when the vehicle is unloaded could be a kinked air spring (bag) supply line, a leaking height control valve, or a leaking pressure protection valve.

Step-by-step explanation:

The cause of the tandem rear axle air suspension ride height rising above normal when the vehicle is unloaded could be a kinked air spring (bag) supply line, a leaking height control valve, or a leaking pressure protection valve.

A kinked air spring supply line can restrict the flow of air, causing the suspension ride height to rise. A leaking height control valve can allow air to escape, resulting in a higher ride height. Similarly, a leaking pressure protection valve can lead to air loss and higher ride height.

To determine the exact cause, a thorough inspection of the suspension system should be conducted by a qualified mechanic.

User Jamzsabb
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