A driver checks the steering assembly from the driver's seat with the engine running. What observation indicates that the steering mechanism has exceeded safe operational tolerances?
- AThe steering wheel turns approximately 5 degrees before initiating movement in the steer tires.
- BThe steering wheel rim moves 1 inch before transferring motion to the steering shaft on a 20-inch wheel.
- The steering wheel rotates more than 10 degrees (about 2 inches on a 20-inch wheel) before the front wheels respond.Answer
- DThe steering wheel requires slight manual effort to turn while the power steering pump is operating at idle.
Answer
Steering wheel rotational free play exceeding 10 degrees (or approximately 2 inches on a 20-inch steering wheel) before the front wheels begin to move indicates excessive play.
According to commercial motor vehicle inspection guidelines, steering wheel free play must not exceed 10 degrees, which is equivalent to approximately 2 inches of movement at the rim of a standard 20-inch steering wheel. Any measurement exceeding this threshold signifies excessive wear in the steering column, universal joints, steering gear, or linkage components and must be corrected before driving.
Step-by-Step Solution
Key Concept
Steering Wheel Free Play Tolerances
Estimated Time:1m 0s