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Hydraulic Control Check Valve Malfunction - Common Faults And Troubleshooting Methods For Cutter Suction Dredgers

2019-11-01 17:18:45 Jason 2357

Hydraulic Control Check Valve Malfunction - Common Faults And Troubleshooting Methods For Cutter Suction Dredgers

Fault analysis and troubleshooting of hydraulic control check valve



(A) Fault phenomenon: Oil Does Not Flow Backwards


Failure analysis:

1, Control pressure is too low

2, control the oil pipe joint leakage is serious

3, the check valve is stuck


Method of exclusion:

1, Increase the control pressure to achieve the required value

2, tighten the joint to eliminate oil leakage

3, cleaning



(B) Fault phenomenon: Not Sealed In The Reverse Adirection, There Is Leakage


Failure analysis:

1. The check valve is stuck in the fully open position.

2. The contact between the tapered surface of the check valve and the cone of the valve seat is uneven.


Method of exclusion:

1, repair, cleaning

2, repair or replace




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