① Check the pump body and pulley for faults or damage, and replace if necessary;

②Check whether the pump shaft is bent, the degree of wear of the journal, and whether the shaft end thread is damaged

③ Check whether the blade on the impeller is broken or the shaft hole is seriously worn

④Check the degree of water seal and bakelite gasket, if it exceeds the usage limit, you should replace with new accessories

⑤Check the bearing wear and measure the bearing clearance. If it exceeds 0.1mm, the new bearing should be replaced

When travelling in bumpy road surface, chassis gives out "dang dang" sound, it is continuous, relatively empty sound, the stabilizer link is broken commonly.

Excessive wear on the ball joint prevents accurate wheel control.

There is a "gurgle" sound, or a cracking rubber cover.

Generally, the most obvious feature of the damage of the outer CV joint is that the car is normal when driving in a straight line, but when steering, the front wheel part gives out a "click" sound, which is unable to turn seriously; The most obvious feature of the damage of the cv joint is when the car is accelerating or driving on the uneven road surface, it will issue "ka-ka" abnormal sound in the gearbox part, while accompanied by the phenomenon of the oil leakage, if the damage is serious when the car turns, there will be abnormal sound.

Excessive deposition of filter element; The filter element of the filter appears sag; Damage to filter housing.

The abnormal noise might be caused by the failure of the stabilizer bar link.

The front brake disc of the car is subjected to loads and impact loads, and the wheels and bearings and the drive shaft are easily damaged. During the inspection, the bearing rotation should be flexible and free from sticking. There is no obvious gap feeling in the axial and radial directions, otherwise it should be repaired or replaced. The bearing shell should be free of cracks. If the bearing is less deformed, it can be tapped and corrected; if the deformation is large, it should be replaced.

First, stop your car and turn the steering wheel in one direction. Generally, you can directly see the stabilizer link. You can feel the gap by shaking the sway bar with your hand. In general, this should not be loose in any direction and angle. Second, in the stopped state, use your foot to rub the front wheel, let the body move forward or backward, and listen to the abnormal sound from the front suspension of the car to help identify the wear on the front of the vehicle chassis or Loose condition. Since the price of stabilizer bar link is relatively cheap, and the replacement difficulty is relatively small, when it is judged that the stabilizer bar link is faulty, or the possibility of the stabilizer bar link failure is relatively large, we can choose to replace the stabilizer bar link.

1. When installing the new stabilizer link, we should pay attention to whether the model is moderate and whether the left and right sides are correct or not;

2.Check the quality of the stabilizer link, such as whether there is the phenomena of oil leakage and others , especially pay attention to the surface of the piston and also can not be injuried; 3.Use professional tools during installation, do not install the stabilizer link toughly;

4.Pay attention to whether the installation position is correct between the stabilizer link and the body and car ;

5.During the assembly process, the surface of the piston rod should be well protected, and the piston rod should be avoided from being damaged by hitting, touching or scratching the piston rod with tools, or it will lead to the damage of the stabilizer link;

6. When the nut of the connecting part is tightened, it shall be carried out in the natural state of the tire and conform to the parameters specified for the whole vehicle.

A faulty shock absorber will lead to insufficient grip of tires in the process of driving, reduce the vehicle's handling and bending stability, and increase the vehicle's braking distance, which will not only affect the ride comfort, but also affect the driving safety, and may lead to serious vehicle accidents.

(1) Inspection of the front shock absorber damper. The front shock absorber damper should be fixed during inspection, and there should be a certain resistance when moving the piston rod up and down, and the upward resistance is greater than the downward resistance. If the resistance is too large, check whether the piston rod is bent. If there is no resistance, it means that the front shock absorber damper oil has leaked or failed and must be replaced.

When the vehicle is running, the defective shock absorber will emit impact noise, so the shock absorber should be replaced. The shock absorber is a maintenance-free mechanism. If there is a slight oil mark on the outside, it does not need to be replaced. If there is a large amount of oil leakage, when it is compressed or pulled open, it will cause a beating phenomenon, because the shock absorber can not be refueled. Replace the front shock absorber damper as a whole.

(2) Inspection of front shock absorber suspension bearings and rubber stoppers. First, check the wear and damage of the front shock absorber suspension bearing, it should be able to rotate flexibly, and only replace it as a whole; check the damage and aging of the rubber stopper and replace it in time;

(3) Inspection of the front shock absorber coil spring. The damper coil spring should be inspected for damage and deformation, and the free length of the coil spring should be measured. If the length of the standard damper is reduced by 5%, it means that the coil spring has been permanently deformed and must be replaced. At the same time, the two springs on the left and right sides should be replaced to maintain the same height on both sides of the vehicle. If there is a crack on the coil spring, it must be replaced.