When it comes to driving, the steering wheel is the place where the driver has the most contact, but do you know what the steering wheel can do besides controlling the direction of the car? Don't underestimate it. Many times, it is quietly communicating to you the possible faults of your car.
I. numbness of hands during driving
When the vehicle is running at medium speed or above, the chassis makes periodic noise, the cab and the door shake, and the steering wheel vibrates strongly until the hand becomes numb. This is caused by the damage of the dynamic balance of the steering transmission device and the excessive wear of the transmission shaft and its spline shaft and spline sleeve.
2. Heavy and laborious steering
The causes are that the rolling bearing and sliding bearing of each part of the steering system are too tight, the bearing is not well lubricated, the ball joints of the steering longitudinal rod and the tie rod are adjusted too tight or lack of oil, the steering shaft and the sleeve are bent, causing stagnation; the front wheel toe in is not adjusted properly; the front car or the frame is bent, deformed; the tire pressure is insufficient, especially the front wheel tires.
III. steering wheel is difficult to operate
When driving or braking, the direction of the vehicle automatically deviates to one side of the road. In order to ensure straight driving, it is necessary to hold the steering wheel firmly. The reasons for vehicle deviation include: the specifications or air pressure of front wheels on both sides are inconsistent, the caster angle or camber angle of front wheels on both sides are not equal, the clearance between front wheels and bearings on both sides is not consistent, the camber or spring force of leaf springs on both sides are not consistent, the wheelbase difference between left and right sides is too large, the wheel brake clearance is too small or the brake drum is lost Round, resulting in one side brake card, brake drag, uneven vehicle loading, etc.
Four: direction drifting
It is often caused by the front wheel shimmy during driving. When the vehicle reaches a certain high speed, the causes of the steering wheel shaking or shimmy are as follows: the dynamic balance of the front wheel assembly is damaged due to tire pad repair or tire repair, the parts of the transmission shaft assembly are loose, the dynamic balance of the transmission shaft assembly is damaged, the shock absorber is invalid, the rigidity of the leaf spring is inconsistent, the steering system parts are worn loose, and the front wheel is damaged Improper calibration.