Examkin

Question

Difficulty: EasySuspension Systems

A technician is performing a baseline suspension system inspection to diagnose handling issues. In what sequential order should the technician carry out the following inspection steps from start to finish?

  1. 1Position the vehicle on a flat, level surface and verify that all tires are at the correct pressure.
  2. 2Measure the vehicle ride height at the manufacturer-specified chassis points under normal curb weight.
  3. 3Raise the vehicle and securely support the chassis with jack stands to take the vehicle weight off the suspension.
  4. 4Inspect the unloaded control arm bushings, ball joints, and springs for looseness, excessive play, or structural damage.

Answer

The technician must first position the vehicle on level ground with correct tire pressures, measure the static ride height under vehicle curb weight, raise and support the chassis to unload the suspension, and finally inspect the unloaded control arm bushings, ball joints, and springs for wear or play.
A standard suspension inspection begins by creating a level baseline with correct tire pressures and measuring loaded static ride height. Once baseline loaded measurements are recorded, the vehicle chassis is raised and supported off the ground to relieve spring tension, enabling accurate checking of bushings, ball joints, and linkages for mechanical play.

Step-by-Step Solution

1
Ensure the vehicle rests on a level surface with properly inflated tires.
Establishes a standardized, uniform baseline for all subsequent measurements.
Uneven surfaces or low tire pressures alter chassis height and distort diagnostic readings.
2
Measure suspension ride height at specified chassis reference points under curb weight.
Detects sagging or fatigued springs and incorrect resting suspension geometry.
Ride height must be evaluated while the springs are loaded under normal vehicle weight.
3
Lift the vehicle and support the frame or unibody using jack stands.
Unloads the vehicle weight from the suspension springs, control arms, and pivot joints.
Unloading the suspension is essential to relieve binding forces on ball joints and bushings.
4
Physically check the unloaded control arm bushings, ball joints, and linkages for excess movement.
Identifies worn, loose, cracked, or deteriorated suspension components.
With vehicle weight removed, free play and mechanical wear can be clearly felt and measured.

Key Concept

Suspension System Inspection and Diagnostic Sequencing
Estimated Time:45s
Rate this question

Topics

Suspension Systems

More questions from this topic