Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A heavy-duty haul truck fitted with a leaf spring suspension system is noted to be riding significantly lower on one side. Visual inspection reveals that the leaf spring pack on that side is sagging and several leaves appear fractured. What is the most appropriate repair action?
Fractured or severely sagging leaf springs indicate structural failure of the spring pack. The only correct and safe repair is to replace the entire damaged lea
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Question: A heavy-duty haul truck fitted with a leaf spring suspension system is noted to be riding significantly lower on one side. Visual inspection reveals that the leaf spring pack on that side is sagging and several leaves appear fractured. What is the most appropriate repair action?
Answer options: ✅ Replace the damaged leaf spring assembly.
- Readjust the shock absorber on the affected side.
- Re-torque the U-bolts on the intact leaf spring.
- Add an additional leaf spring to the existing pack.
Correct answer: Replace the damaged leaf spring assembly.
Explanation: Fractured or severely sagging leaf springs indicate structural failure of the spring pack. The only correct and safe repair is to replace the entire damaged leaf spring assembly to restore proper ride height, load capacity, and suspension function. Adjusting shock absorbers, re-torquing U-bolts (on an intact spring), or adding a single leaf will not address the fundamental failure of the existing spring pack.
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