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Zorluk: OrtaSuspension System Inspection

While checking the multi-leaf spring suspension on a commercial trailer axle equipped with a twelve-leaf spring pack, a driver discovers that three of the leaves are cracked and separated. Which action is mandated by commercial vehicle safety standards for this condition?

  1. A
    Continue the trip with reduced cargo weight, provided the main leaf remains intact and properly aligned.
  2. Place the vehicle out of service immediately because twenty-five percent or more of the spring leaves are broken.Cevap
  3. C
    Document the broken leaves on the post-trip inspection report for standard maintenance at the end of the shift.
  4. D
    Operate the vehicle at reduced highway speeds as long as there is at least one inch of clearance between the tire and the fender.

Cevap

Place the vehicle out of service immediately because twenty-five percent or more of the spring leaves are broken.
Under standard commercial vehicle safety and inspection regulations, if one-fourth (25 percent) or more of the leaves in any leaf spring assembly are broken or missing, the vehicle must be placed out of service immediately. In a twelve-leaf spring pack, three broken leaves constitute exactly 25 percent, triggering the mandatory out-of-service order.

Adım Adım Çözüm

1
Calculate the proportion of broken leaves relative to the total number of leaves in the spring pack.
3 broken leaves divided by 12 total leaves equals 0.25, or exactly 25 percent.
Commercial vehicle safety standards evaluate multi-leaf suspension defects based on the percentage of damaged leaves.
2
Compare the calculated percentage against standard commercial motor vehicle out-of-service criteria.
Any spring assembly with 25 percent or more of its leaves broken or missing constitutes an immediate out-of-service condition.
Suspension integrity is critical to axle stability and load distribution, making severe leaf fractures hazardous to operate.

Anahtar Kavram

Multi-leaf suspension out-of-service defect threshold (25% or more broken/missing leaves)
Tahmini Süre:1m 0s
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