Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A heavy-duty off-highway truck uses an independent front suspension system. During a post-maintenance road test, the technician observes significant bump steer when traversing uneven terrain. What is the MOST likely cause of this issue?
Bump steer is caused by changes in toe angle as the suspension moves through its travel. This is typically due to incorrect geometry of the steering linkage, sp
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Question: A heavy-duty off-highway truck uses an independent front suspension system. During a post-maintenance road test, the technician observes significant bump steer when traversing uneven terrain. What is the MOST likely cause of this issue?
Answer options: ✅ Incorrect tie rod length or angle after suspension component replacement.
- An over-inflated left front tire.
- Worn universal joints in the driveshaft.
- A partially seized brake caliper.
Correct answer: Incorrect tie rod length or angle after suspension component replacement.
Explanation: Bump steer is caused by changes in toe angle as the suspension moves through its travel. This is typically due to incorrect geometry of the steering linkage, specifically the tie rod length or its angle relative to the control arms, often after suspension repairs. Accurate alignment and component dimension are critical, as per ASE Off-Road standards.
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