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          Daily use and protection of car parts shock absorbers

                 The damper auto parts for everyday use and protection:
                 In order to make the vibration of the frame and the rapid decay of the body, improve vehicle ride and comfort, the automotive suspension systems are generally equipped with shock absorbers, the current car is widely used in auto parts double acting shock absorber cartridge device.
                 Automobile shock absorber is used in the process of wearing auto parts, shock absorbers work is good or bad, will directly affect the stability and cars with other parts of life, so we should make shock absorbers always in good working condition . The following methods can test whether the work of a good shock absorber.
                 1. Making the car on the road in poor condition after traveling 10km road parking, touch shell shock absorber, if not hot enough, indicating that no internal shock resistance, shock absorber does not work. In this case, can be added to the appropriate lubricant, and then to test if the case of fever, compared with internal shock absorber oil, should add enough oil; otherwise, indicating shock absorber failure.
                 2. Press firmly on the bumper, then release, if the car has 2 or 3 times jump, then the shock absorber works well.
                 3. When the car slowly driving and emergency braking, if the car more intense vibration, indicating that auto parts shock absorber problem.
                 4. Remove the shock absorber to its upright, and the lower end of the connecting ring in the vise clamp, pull compression damping lever several times, this time there should be a stable resistance, pull up (recovery) should be greater than the resistance to downward pressure when the resistance, such as resistance to unstable or no resistance may be an internal shock absorber valve parts lacking fuel or damage should be repaired or replaced.
                 In determining the shock absorber problem or failure, you should first check the shock absorber for leaks or signs of old oil spills.
                 Seal gaskets, gasket rupture damaged oil storage cylinder head nut loose. May be oil seals, sealing washers failure, should be replaced with new seals. If you still can not eliminate the leak, the shock absorber should be pulled out, if there was not a time card or severity, further check the clearance between the piston and cylinder is too large, whether the shock absorber piston rod bending, piston rod whether the cylinder surface and scratch or pull marks.
                 If the damper does not leak phenomenon, you should check the shock absorber connection pin, connecting rod, connecting hole, and other rubber bushing for damage, loose weld, break or fall off place. If these were normal, should be further decomposed shock absorbers, check with the gap between the piston and cylinder is too large cylinder with or without injury, the valve seal is good, valves and valve seat are tight fitting and Save Dilatation shock absorber spring is too soft or broken, take grinding or for parts to repair approach under the circumstances.
                 In addition, the shock absorber in actual use will be beep failures, mainly due to the shock absorbers and leaf springs, frame or shaft collide, damage or loss and shock pad dust tube deformation, oil insufficient causes, reasons should be identified, to be repaired.
                 After the inspection, repair shock absorbers should be specialized test rig performance test, when the frequency of the resistance at 100 ± 1mm, its resistance to stretching and compression stroke stroke should be specified. As liberation CAl091 done stroke the biggest obstacle for the 2156 ~ 2646N, the compression stroke the biggest obstacle for the 392 ~ 588N; Dongfeng car done stroke the biggest obstacle for the 2450 ~ 3038N, the compression stroke the biggest obstacle for the 490 ~ 686N. If there is no experimental conditions, we can also use an empirical approach, which uses an iron bar penetration within the lower end of the damper rings, with both feet slam both ends, both hands, pull back and forth on the rings 2 to 4 times, when pulled up great resistance, do not feel effortless when pressed down, but compared to some recovery and repair before stretching resistance, no air-way sense, it indicates that the damper normal.
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