How to deal with the problem that the wheels of the truck cannot return to the right position automatically after steering?
The main reason why the wheels of a car can automatically return to the right position after steering is that the positioning of the steering wheel plays a decisive role. The kingpin caster and kingpin inclination play a decisive role in the automatic return of the steering wheel.
The righting effect of kingpin caster is related to vehicle speed, while the righting effect of kingpin caster is almost independent of vehicle speed. Therefore, when the car is running at high speed, the righting effect of backward tilt is greater than that of inward tilt at low speed.
In addition, when the steering wheel is deflected due to occasional impact when driving in a straight line, the kingpin inclination also plays a positive role.
Knowing this principle, let's analyze the reason why the steering wheel of this truck will not return to the right position by itself. To be sure, there is something wrong with the steering wheel alignment of this truck.
So which factors will change the steering wheel alignment? The common faults are: the plane bearing of the knuckle pin is damaged, the knuckle pin sleeve is excessively worn (that is, the "vertical shaft" is broken), the bearing of the steering wheel is loose or damaged, and the knuckle is deformed.
In addition, broken front bow piece, broken center screw, too loose riding bolt, broken bow shaft, etc. will lead to front axle alignment, and the whole steering wheel alignment will be changed, so it will not be able to automatically return to the right position. These faults need to be disassembled and repaired.
Another possibility is that the bearings and sleeves of the knuckle pin and the steering ball head are poorly lubricated, which leads to excessive resistance of the steering wheel alignment, and this situation also leads to the failure of the steering wheel alignment. At this time, just lubricate these parts. It should be noted that when buttering these parts, the wheels should be supported, otherwise the butter will not get in.
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