ASE A4 Suspension and SteeringSteering System Diagnosis and RepairEasy
A vehicle exhibits excessive free play in the steering wheel, requiring constant small corrections to maintain a straight path. When the technician checks the steering gear, a significant amount of rotational movement is observed at the input shaft before the output shaft begins to move. Which of the following is the MOST likely cause?
- AA worn power steering pump.
- BA faulty steering dampener.
- CLoose tie rod ends.
- DExcessive play in the steering gearbox.
Show answer & explanationAnswer & explanation
Correct answer: D. Excessive play in the steering gearbox.
Excessive free play in the steering wheel and significant rotational movement in the steering gear input shaft before the output shaft moves are classic indicators of internal wear or adjustment issues within the steering gearbox itself.
Why the other options are wrong
- A. A worn power steering pump would cause hard steering or noise, not excessive free play in the steering wheel.
- B. A faulty steering dampener would primarily affect steering stability and road feedback, not cause excessive free play in the steering wheel itself.
- C. Loose tie rod ends would cause play at the wheels and potentially clunking, but the primary play observed would be in the linkage, not directly in the gear's internal movement.
Steering Gearbox Play
Excessive free play in a steering gearbox refers to unwanted movement between the input (steering shaft) and output (pitman arm/rack) components, leading to loose steering.
- Manifests as excessive steering wheel free play.
- Can be caused by internal wear of gears or bearings.
- May also be due to improper adjustment of the gear.
- Reduces steering precision and vehicle control.
Memory trick: Loose Gear Gives Great Grievances.