Item | Method | Reasons for failure | Assessment of deficiencies |
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| Minor | Major | Dangerous |
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2.3. Steering play | With the vehicle over a pit or on a hoist, the mass of the vehicle on the road wheels, the engine, if possible, running for vehicles with power steering and with the road wheels in the straight-ahead position, lightly turn the steering wheel clockwise and anti-clockwise as far as possible without moving the road wheels. Visual inspection of free movement. | Free play in steering excessive (for example, movement of a point on the rim exceeding one fifth of the diameter of the steering wheel or not in accordance with the requirements 1 . | | X | |
Safe steering affected. | | | X |
2.4. Wheel alignment (X) 2 | Check alignment of steered wheels with suitable equipment. | Alignment not in accordance with vehicle manufacturer's data or requirements 1 . | X | | |
Straight on driving affected; directional stability impaired. | | X | |
2.5. Trailer steered axle turntable | Visual inspection or using a specially adapted wheel play detector | (a) Component slightly damaged. | | X | |
Component heavily damaged or cracked. | | | X |
(b) Excessive play. | | X | |
Straight on driving affected; directional stability impaired. | | | X |
(c) Attachment defective. | | X | |
Attachment seriously affected. | | | X |
2.6. Electronic Power Steering (EPS) | Visual inspection and consistency check between the angle of the steering wheel and the angle of the wheels when switching on/off the engine, and/or using the electronic vehicle interface | (a) EPS malfunction indicator lamp (MIL) indicates any kind of failure of the system. | | X | |
(b) Inconsistency between the angle of the steering wheel and the angle of the wheels. | | X | |
Steering affected. | | | X |