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Question:

Bending machine without pressure

Bending machine without pressure

Answer:

The plunger or cylinder liner is scratched, or the seal wears, resulting in insufficient pressure.
Internal hydraulic oil is insufficient to add hydraulic oil.
Hydraulic equipment pressure, no pressure failure, should carry out the above checks.
There is air inside, need to let the air shine.
Hydraulic check valve seal is not good, there is leakage (for example: spring off, the ball surface damage caused by bad seal).

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