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88 89 Possible causes and characteristics of faults Methods of check & elimination 渊1冤it爷s hard to turn or steering wheel cannot return smoothly (a) Steering wheel shaft, sliding shaft or steering wheel column deforms (b) Universal joints loose or get stuck (a) Replace parts (b) Replace universal joints 渊2冤Steering wheel vibrates, steering operation is not sta鄄 (a) Transmission shaft of the steering system looses clearance is too large (a) Tighten properly 6. Faults of steering mechanism and elimination Possible causes and characteristics of faults Methods of check & elimination 渊3冤Front wheel deviates (a) One of front wheel brakes sticks or shock absorber at one side is invalid. (b) Air pressure of one of the front tires is too low (a) Adjust brake clearance or replace shock absorber (b) Charge enough air 渊4冤Power steering pump leaks oil (a) Oil seal or O-ring damages (a) Replace 渊5冤Steering is heavy (a) Steering gear fails (c) Pre-tightening force of the segment gear shaft bearing is improper (a) Replace plug components gear if necessary (c) Adjust pre-tightening force of the segment gear shaft bearing HFC1045 series trucks |