Checking the free play (backlash) of the steering wheel Opel Astra H

With an increased free play of the steering wheel, it becomes difficult to drive the Opel Astra, as it responds to the driver's actions with a delay. In addition, an increased stroke that cannot be eliminated by adjusting the steering gear indicates a malfunction of the steering (weakening of the steering gear, steering rods or wear of their parts).

Check steering wheel play with the vehicle parked on a level, non-slip surface. The play must not exceed 5°. You can also determine the backlash in linear units (mm) by the formula

L = (5°/360°) ? D,

where L - steering wheel play, mm; ? = 3.14; D - outer diameter of the steering wheel, mm.

For a steering wheel with an outer diameter of 380 mm, the play should not exceed 16-18 mm.

You will need: ruler, chalk (or wire) for marking.

1. Set the front wheels to a position corresponding to the rectilinear movement of the Opel Astra.

2. Install the ruler so that its end rests against the instrument panel, and the plane of the ruler touches the outer surface of the steering wheel rim. Without changing the position of the ruler, turn the steering wheel to the left until the front wheels begin to turn. In this position, put a mark on the steering wheel rim (fasten the wire).

3. Without changing the position of the ruler, turn the steering wheel to the right until the front wheels begin to turn.

4. In this position, put a second mark on the steering wheel rim (fix the wire).

5. Measure the distance between the marks along the rim. It should not exceed the calculated value. If the distance (steering wheel free play) is greater, the cause must be determined and corrected.

• Source http://www.automnl.com/model/opel_astra_h2/172/