Conduct indicator test, friction test, temperature characteristic test, etc. 1 for all types of JA type damping ball valve pneumatic ball valve, make the car stop after driving 10km on the road with poor road conditions, touch the shell of JA type damping ball valve pneumatic ball valve with your hand. If it is not hot enough, it indicates that there is no resistance inside the JA type damping ball valve pneumatic ball valve, and JA type damping ball valve pneumatic ball valve does not work
At this time, appropriate lubricating oil can be added and the test can be carried out again. If the shell is hot, the pneumatic ball valve is short of oil inside, and it should be filled with enough oil; Otherwise, JA type damping ball valve pneumatic ball valve is invalid