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Oil Temperature Is Too High Malfunction - Common Faults And Troubleshooting Methods For Cutter Suction Dredgers

2019-11-01 17:18:46 Jason 1378

Oil Temperature Is Too High Malfunction - Common Faults And Troubleshooting Methods For Cutter Suction Dredgers

The oil temperature is too high failure analysis and troubleshooting


(A) Symptom: When The System Does Not Require Pressure Oil, The Oil Still Overflows To The Tank At The Set Pressure Of The Relief Valve.


Failure analysis:

The unloading circuit is malfunctioning.


Method of exclusion:

Check that the electrical circuit, solenoid valve, pilot circuit and unloading valve are operating normally.



(B) Fault phenomenon: Unreasonable Selection Of Hydraulic Components


Failure analysis:

1, the valve specifications are too small, energy loss is too large

2. When the pump is selected, the flow of the pump is too large.


Method of exclusion:

1. According to the working pressure of the system and the maximum flow rate through the valve

2, reasonable selection of pumps



(C) Failure phenomenon: Insufficient Cooling


Failure analysis:

1. Cooling water supply failure or fan failure

2. There is sediment in the cooling water pipeline


Method of exclusion:

1, eliminate the fault

2, eliminate precipitation



(D) Fault phenomenon: Insufficient Heat Dissipation


Failure analysis:

Insufficient heat dissipation area of the fuel tank


Method of exclusion:

Modification of cooling system or increase fuel tank capacity and heat dissipation area



(E) Symptom: Hydraulic Pump Overheating


Failure analysis:

1. Power loss due to wear

2. Work with oil with too low or too high viscosity


Method of exclusion:

1. Repair or replacement

2, choose the oil suitable for the viscosity of the system



(F) Fault phenomenon: Oil Circulation Is Too Fast


Failure analysis:

The liquid level in the tank is too low


Method of exclusion:

Refueling fluid to the recommended location



(G) Fault phenomenon: Excessive Resistance Of Oil


Failure analysis:

The inner diameter of the pipe does not match the required flow rate or because the inner diameter of the valve is not large enough


Method of exclusion:

Suitable for pipes and valves of appropriate size, or to reduce power.



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The Chinese dredge manufacture who has many branch offices in Asia,Russia,Mid-East,Africa countries etc;

The Chinese manufacture who keep the biggest sale anualy for cutter suction dredgers.

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