1) failure phenomenon

The car can not keep the middle position, without the external force automatically leaving the direction of the straight line.

2) the cause of the failure

(1) the pressure of the two front wheel is inconsistent.

2. The angle of the end of the main pin or the angle of the wheel is not equal.

The anterior bundle is too large or too small.

There is one side front plate spring dislocation, break, both sides of elastic unequal or one side vibration damper failure.

At the front wheel, the wheel hub bearing is loosed and adjusted, and there is one wheel brake and lag.

The Baotou beiben heavy truck parts, steering knuckle arm, steering knuckle bending deformation.

7 Baotou beiben heavy truck front axle parts, frame deformation, steel plate spring U bolt loose so that the wheelbase is not equal.

The rear axle tube bending deformation.

3) analysis and diagnosis

(1) check the use of tires. If the tire tread or the middle side have two shoulder wear, lateral or medial side wear and from outside to inside or from the inside outward when the sawtooth shaped wear, respectively determine the tire pressure is high or low, camber is too large or too small, the beam is too large or too small, so as to make the necessary adjustments or maintenance.

2. When the tire pressure is the same and the tire diameter is the same, the car body is tilted. We should check whether the leaf spring on the low side is intact, whether the arc is enough, and whether the elasticity is right.

(3) after driving for a long mileage, touch the Baotou Bei Ben heavy truck accessories wheel bearing and brake drum by hand. If there is a hot hand, it indicates that the hub bearing is too tight or the brake system is dragging.

4. If the above is all good, the integrity of the car is parked on the flat surface, and the angle of the front wheel is checked with the instrument.

Is the same with a tape measure about the wheelbase.