Failure |
Possible reasons |
Processing method |
The journey of the jack doesn’t meet the requirements |
1 The middle spring deforms, it lacks elasticity and the piston can’t return to its original position. |
Replace the spring |
2 The upper and lower clamps have malfunction and the overload causes slipping. |
Check the conditions of the clamps, steel balls and small springs, and reduce the weight of the load. |
3 The oil-supplying pressure is insufficient. |
Adjust the working pressure and check the oil condition in the pipes. |
The jack can’t climb up |
1 The steel ball is seriously damaged. |
Replace with new steel balls |
2 The middle spring is broken or seriously damaged. |
Replace the spring |
3 The upper or lower clamps are damaged, or the internal wall of the hole is seriously deformed, or there is the fatigue for the small spring. |
Replace the clamps or the small springs. |
Oil leakage |
1 The sealing ring is worn |
Replace the sealing ring. |
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2 There is the galling for the cylinder body |
Repair the internal wall or replace. |
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3 The connection place is loosening. |
Tighten the connecting point. |