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hitachi hydraulic pump maintenance instructions
When the hitachi hydraulic pump of the excavator is first used, pay attention to whether the pump has abnormal noise? Because it is easily affected by air bubbles and dust at the beginning of operation, poor lubrication at high temperature or overloading of conditions, etc., make the hydraulic pump emit abnormal sound.
Pay attention to the displayed value of the pressure gauge of the hydraulic circuit of the excavator at any time.
Understand the function of each valve inside the hydraulic pump system of the excavator.
The speed of the hydraulic pump is also related to the control pressure. The control pressure comes from the valve group, with positive control and negative control. The positive control oil pressure signal comes from the differential pressure, the higher the pressure, the greater the hydraulic pump flow, which is a proportional signal.
All Kinds Of Hitachi Excavator Hydraulic Pump Parts
| Name | All Kinds Of Hitachi Excavator Hydraulic Pump Parts |
| Product Number | All Part Numbers You Need |
| Condition | Original Brand New |
| MOQ | 1 Piece |
| Payment | T/T, Western Union, Paypal, etc |
| Standard or Nonstandard | Standard |
| Delivery Time | In 3 Days |
| Packing | Wooden Box |
| Warranty | 6 Months |
| Transport | By sea/air/express (DHL/FEDEX/TNT/UPS/EMS/City-line) |
Nowadays, excavators mostly use hydraulic transmission and control. The engine provides power to drive the hydraulic pump to rotate. After the high-pressure hydraulic oil comes out of the hydraulic pump, it drives the walking hydraulic motor, hydraulic cylinder, rotary motor, and distribution valve for hydraulic transmission and control.
The hydraulic pump is the power source of the hydraulic system of the excavator, and it is an energy conversion device that converts mechanical energy into hydraulic energy. In hydraulic excavators, the hydraulic pump is also the most faulty component, and once the hydraulic pump fails, it will immediately affect the normal operation of the excavator's hydraulic system, or even fail to work.
When replacing the pump, pay attention to whether each filter screen in the oil circuit in the hydraulic system of the excavator is blocked?
The excavator regularly checks the use of hydraulic oil. Basically every one or two months, it is necessary to analyze whether the hydraulic oil of the excavator has deteriorated? Is there any discoloration? Is it polluted.
Pay attention to whether the piping of the hydraulic device is working normally? After running for a period of time, check whether there is oil leakage and whether the piping is loose?
During the operation period of the new machine, the excavator should grasp the operation status inspection, such as the maintenance of the machine parts, whether the screws are loose, whether the oil temperature rises abnormally, whether the hydraulic oil deteriorates quickly, and check whether the use conditions meet the regulations Wait.
Generally speaking, hitachi hydraulic pump parts have the following characteristics:
●Larger pumping speed in a wider pressure range;
●Quick start, can work immediately;
●Insensitive to dust and water vapor contained in the pumped gas;
The rotor does not need to be lubricated, and there is no oil in the pump fitting cavity;
The vibration is small, the rotor dynamic balance condition is good, and there is no exhaust valve;
The driving power is small, and the mechanical friction loss is small;
●Compact structure, small footprint;
●Low operation and maintenance cost.
We are a comprehensive supplier of excavator accessories, if you have excavator accessories needs, please contact us, we will be glad to receive your inquiry!
Sales Manager：Liam Cheng Wechat/Whatsapp:+8616653175111
