School bus gas shock absorber 65490/ 1618708000

FAQ (oil leaking, Loud noise,Stuck ,Shaking)

oil leaking

1)     oil leaking from oil seal ( Reason: Use with cheap quality oil seal)

2)     ( damage in strut , oil seal leaking oil due to friction)

3)        Welding spot leaking oil ( Reason :problem of manufacture craftsmanship , production equipment)

Loud noise

1)     Outside factor

     a. spring seat and spring not match . The space between upper and lower end of spring is to

big.

b. the top bearing bush damages.   c. loose of upper/lower arm ,ball joint, drag link, and stabilizer link.

d. Deform of damage car

2)     problem of shock absorber itself

1. Cheap quality grease ( lubricant oil ), emulsify during the high speed running .

1. the space between strut and oil seal is small

1. the deform of strut and friction with powder metallurgy.

Re: in shock absorber , the bypass valve and the bypass oil appers noise, and clear when

Ear close to it ,this situation is ordinary and normal .

shaking

1. Outside

1. The installation of Tyres location parameter is not good.

1. the tyre pressure standard or not, left and right is same or not .

c.

loose of upper/lower arm ,ball joint, drag link, and stabilizer link.

1. shock absorber itself

1. the inner tube of shock absorber not smooth . b.inner tube not clear

1. the space of oil seal and strut is too small

stuck

1. Outside

1. not correct assemble and verticality.

1. The problem of shock absorber itself

1. the blocking of valve ,inner assemble position not clear enough.

1. concentricity (powder metallurgy part, piston, strut