While inspecting the front axle leaf spring assembly on a commercial motor vehicle, a driver spots a visible crack across the top main leaf near the spring hanger eye. Which of the following statements correctly identifies the required action and regulatory status of this condition?
- AThe vehicle may remain in service if the remaining secondary leaves in the pack are intact and make up more than 75% of the total spring pack.
- BThe vehicle may be operated at reduced highway speeds until the end of the scheduled delivery route before undergoing repair.
- The vehicle must be placed out of service immediately, because any fracture in a main leaf critically compromises axle attachment to the vehicle frame.Cevap
- DThe driver must document the defect on the driver vehicle inspection report (DVIR) for scheduled maintenance during the next 30-day service interval.
Cevap
The vehicle must be placed out of service immediately, because any fracture in a main leaf critically compromises axle attachment to the vehicle frame.
Any crack or fracture in the main leaf of a leaf spring assembly poses an immediate danger because the main leaf forms the structural link (the spring eye) connecting the axle to the vehicle frame. Consequently, commercial vehicle safety regulations mandate that the vehicle be placed out of service immediately until repaired.
Adım Adım Çözüm
Anahtar Kavram
Suspension System Defect Recognition and Main Leaf Out-of-Service Criteria
Tahmini Süre:1m 0s