Operation CHARM: Car repair manuals for everyone.

Turning Effort Test

Turning Effort Test

NOTE: Make sure that the front wheels are correctly aligned and the tire pressure is correct before checking the steering effort.

1. Park the vehicle on dry concrete and set the parking brake.
2. Insert a thermometer into the power steering oil reservoir.

3. CAUTION: Do not hold the steering wheel against the stops for more than 3 to 5 seconds at a time. Damage to the power steering pump can occur.

Idle the engine for 2 to 3 minutes. Turn the steering wheel from stop-to-stop several times to warm the fluid to 50-60°C (122-140°F).
4. With the engine running, attach the spring scale to the rim of the steering wheel.
5. Measure the pull required to turn the steering wheel one complete revolution in each direction.