Examkin

Question

Difficulty: MediumSuspension System Inspection

An operator is conducting a pre-trip inspection on a tractor equipped with an air ride suspension system and discovers that one of the drive axle air springs (air bags) is ruptured, leaking air, and deflated. What action must the driver take before operating the vehicle?

  1. A
    Compensate for the leaning frame by overinflating the drive tires above the sidewall maximum cold pressure rating.
  2. B
    Drive at reduced highway speeds provided the steering wheel free play does not exceed two inches.
  3. Place the vehicle out of service until the ruptured air spring is repaired and the suspension system holds air properly.Answer
  4. D
    Manually adjust the brake chamber pushrod stroke to redistribute load weight across the tandem axles.

Answer

The vehicle must be placed out of service until the ruptured air spring is repaired and the suspension system holds air properly.
Air springs (air bags) support the vehicle frame and cargo load while maintaining proper axle alignment and ride height. A ruptured, leaking, or deflated air spring compromises vehicle stability, risks damage to the chassis and axles, and leads to an out-of-service condition under pre-trip inspection standards. The vehicle cannot be moved until the defect is fully repaired.

Step-by-Step Solution

1
Identify the severity and nature of the suspension defect.
A ruptured, deflated air spring causes continuous loss of air pressure and causes the chassis to rest directly on axle stops, severely impairing steering stability and load distribution.
Commercial vehicle safety standards classify damaged, missing, or deflated air suspension components as critical safety defects.
2
Determine the proper driver response under vehicle inspection safety rules.
The vehicle is unsafe and illegal to operate in commercial service until mechanical repairs are completed.
Drivers are prohibited from driving a commercial motor vehicle with out-of-service suspension defects.

Key Concept

Air suspension defect identification and out-of-service safety criteria
Estimated Time:1m 0s
Rate this question

Topics

Suspension System Inspection

More questions from this topic