When the car is driving, it feels heavy and hard to turn the steering wheel, and the front wheel is deflected with great strength. Heavy turning is often caused by deformation, damage, improper adjustment and lack of lubricating oil.

(1) main reasons

(1) the failure of the steering gear.

A. steering gear missing oil.

The B. shafts bend or the steering shafts are depressed, and sometimes "squeaky" friction sounds.

C. steering bearing and steering shaft tube and steering wheel block.

A. steering rocker arm and bushing with a small gap or no gap.

The E. steering rocker arm does not coincide with the two ends bushing (or the needle roller bearing) axis.

The upper and lower end bearing of the input shaft of the f. steering gear is too tight, or the bearing is damaged.

9. the meshing clearance of the northern Baotou Mercedes Benz accessories is too tight.

(2) the failure of steering gear.

A. all corners of the ball are not lubricated.

The B. turns to the straight pull rod and the ball head on the rod, and the compression spring is strong or broken.

C. turns to the straight pull rod or the cross bar bending deformation.

The gap between the main pin and the bushing of the D. steering knuckle is too small, or the sleeve is rotated to block the oil channel, so that the lubricating oil can not be entered, and the bushing and the main pin of the steering knuckle are ablated.

E. steering knuckle bearing is tightened or lacking in lubricating oil or damage.

F. steering knuckle arm deformation.

The front axle (steering bridge) and the wheel malfunction.

The deformation and torsion of the front axle of A. lead to the misalignment of the front wheel.

B. tire pressure is insufficient.

C. front wheel hub bearings are adjusted too tight.

D. steering bridge or drive bridge overloading.

(4) other parts of the fault.

The A. frame is bent and torsional.

B. front plate spring or front suspension deformation.

C. front wheel location is incorrect.

(2) troubleshooting method

In troubleshooting, first analysis of fault location, and then further ascertain the fault in which parts.

(1) lifting the front axle and turning the steering wheel. If the steering wheel is lighter, it indicates that the fault is on the front bridge, the wheel or the other parts. Since the front axle is jacked up, the wheels are no longer in contact with the road, and the wheels have no effect on the steering. At this time, tire pressure should be checked first. If the air pressure is low, the tire should be inflated to the standard. Next, check the front wheel alignment, especially the kingpin camber and toe in value. If the front beam is too large and the tire wear is serious, the front wheel raking should be adjusted. The positioning of the front wheel can also be measured with an instrument.

If the steering is still heavy after the top of the bridge, it indicates that the fault is in the steering gear or the steering gear. At this time, the ball head pin connection detachable Baotou Benz accessories and steering arm straight rod, if the steering light, the fault in steering gear, check the ball pin assembly is too tight, the steering knuckle thrust bearing is short of oil damage, the transmission rod is bent and deformed etc.. Usually when the examination, by hand the two wheels turn around at the transmission part, and with both hands on the wheel to check the tightness of the moving wheel bearing.

(3) after dismantling the steering arm, if the steering is still heavy, it indicates that the fault is in the steering gear. At this time, you can check whether the steering gear oil, turn the steering wheel when listening to a steering shaft and steering column rubbing sound, check and adjust the steering screw of upper and lower tapered roller bearing preload, check the steering internal meshing clearance is too small, the steering rocker shaft whether the card, if still not ruled out fault will be steering disassembly inspection of internal failure parts.

(4) after the above operation, if the steering wheel is still heavy, it can check the North Baotou Benz parts vehicle bridge or the lower control arm (independent suspension type) and the steering knuckle arm to see if there is any deformation. If deformation is found, it should be trimmed or replaced. Check the spring (leaf spring or spiral spring) at the same time to see if it is broken or if it is replaced.