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Hydraulic system pressure is not normal fault diagnosis and troubleshooting

Hydraulic system pressure is not normal mainly because the work pressure can not build up, rise less than the set value or rise down after the down, the reason often with the engine, pumps and valves and many other parts.In the overhaul, according to the …

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022018-02

The comprehensive maintenance of old master machine notes

First, the engine water temperature is high, remove the thermostat, the thermostat seat below the application of small holes plug the plug, to prevent hot water recycling.Second, the gear pump on the side of the vacuum to generate a suction port. The side…

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142017-04

Hitachi excavator upper structure and the working principle of the main pump and the sensor

Pump system includes main pump (HPV091DW) and pilot pump (HV/ZFS11/16.8L) two kinds. The main pump for variable displacement axial piston type can be bent, the main hydraulic system of hydraulic oil is transported to the mechanical and hydraulic component…

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142017-04

Engine power shortage "eight see eight check"

Look, smoke checks for wear. Two see carbon deposition check condition. Three, look at the water temperature check cooling. Four look at the gas distribution valve. five look at the cylinder pressure check leak. Six see smoke smoke check. Seven see chaca…

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142017-04

Excavator running deviation

1. The hydraulic pump is faultyUnder normal circumstances the excavators are used double pump, walking is usually a pump is faulty, the simplest way to judge is: the two high-pressure hydraulic pump tubing on the transfer, if the original slow faster, the…

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142017-04

Hydraulic system failure and maintenance of excavator

The hydraulic system is mainly composed of hydraulic oil, hydraulic system, hydraulic system, hydraulic system and so on. It has the advantages of compact structure, flexible operation, smooth operation and convenient operation. The hydraulic system is a …

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142017-04

Engineering machinery maintenance four

Construction machinery plays an important role in the construction of the country, so we should pay attention to the maintenance and maintenance in time. Maintenance is an effective means to restore the performance of construction machinery and prolong it…

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142017-04

Hydraulic maintenance data for excavator

Excavator common faults and exhaust method: walking motor, two main tubing burst. The motor two main pipe walking hydraulic excavator (A, B) is the main reason often burst speed, double speed valve after the valve failed to return on time, the oil inlet a…

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142017-04
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