How to maintain the hydraulic bolt tensioner?

1, must be strictly in accordance with the specification requirements of the method of operation, can not arbitrarily increase the hydraulic tensioner input working pressure and bolt tension length, so as not to damage the Seal ring and related components.
2. After the work is finished, it should be wiped clean and properly kept. In particular, the oil inlet can not seep into the ash (after the construction is completed, the quick joint part should be covered with a dust cap) to prevent damage to the oil cylinder and the piston after entering the fuel tank.
3, when replacing O-rings and other accessories, we must pay attention to anastomosis to ensure the sealing effect.
How to maintain the hydraulic bolt tensioner?

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