The dedicated vehicle is tingling at a speed above mid-speed. The chassis had periodic sounds, and the cab and doors trembled when severe, and the steering wheel vibrated strongly until the hands became numb. This is due to the destruction of the dynamic balance of the directional drive and the excessive wear of the drive shaft and its splined shaft and splined sleeve.
Turning hard and heavy. The reasons are due to the fact that the rolling bearings and sliding bearings in various parts of the steering system are over-tightened and the bearings are not well lubricated; the ball studs of the steering trailing rods and tie rods are over-tightened or lack of oil; the steering shaft and casing are bent and cause jamming; The front beam is not adjusted properly; the front axle or frame is bent and deformed; the tire pressure is insufficient, especially the front tires.
The steering wheel is difficult to manipulate. When driving or braking, the direction of the vehicle is automatically biased toward the side of the road. To ensure straight running, the steering wheel must be firmly grasped.
The general cause of vehicle deviation is due to: the front wheel specifications or air pressure on both sides are inconsistent; on both sides of the front wheel kingpin caster angle or wheel camber angle is not equal; on both sides of the leaf spring steel arch or elastic inconsistent; left and right sides of the shaft The difference is too large.
The direction of "love floats." The direction of "flying" is often caused by the swinging of the front wheels during driving. When the vehicle reaches a certain speed, the reason why the steering wheel trembles or swings is that the front wheel assembly dynamic balance is damaged due to the shimmed tire, the parts of the drive shaft assembly are loosened, and the dynamic balance of the drive shaft assembly is destroyed.
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