Construction machinery repairing and maintenance knowledge for brand equipments Factory China - New - Liteng Machinery

16/Sep2021

The Hydraulic Circuit Of Hitachi Excavator Leg Mechanism Is Analyzed

For tire type construction machinery, in order to expand the working area and increase the overall stability, it is necessary to extend outriggers to the outside of the tire on the frame to support...

16/Sep2021

Correctly Use Hitachi Excavator Hydraulic System

① Check the coaxiality between the hydraulic torque converter and the engine. Check the deviation between the engine crankshaft and the end face of the engine flywheel housing, which shall not exce...

16/Sep2021

What About The Hydraulic Clamping in The Hydraulic System Of Shengang Excavator?

Hydraulic clamping in the hydraulic system generally means that when the valve core stops moving for a period of time (about 2 ~ 5mm), great resistance is generated, making it very difficult for th...

15/Sep2021

For The Temperature Rise in The Hydraulic System Of Hitachi Excavator

(1) System temperature rise caused by unreasonable design of hydraulic system of Hitachi excavator The oil temperature of the hydraulic system is too high due to a large amount of pressure loss in ...

15/Sep2021

Detailed Discussion On Crawling in Hydraulic System Of Shengang Excavator

"Crawling" is an abnormal motion state that often occurs in hydraulic transmission. Slight "crawling" causes weak vibration of moving parts, and significant "crawling"...

15/Sep2021

Test And Inspection After Installation Of Hydraulic Cylinder Of Hitachi Excav...

The hydraulic cylinder of Hitachi excavator shall be tested after installation. The test items are as follows. (1) Motion balance inspection Run for 5 ~ 10 times under the minimum pressure force 1,...

15/Sep2021

How To Install The Hydraulic Cylinder Of Hitachi Excavator?

The installation of Hitachi excavator hydraulic cylinder in construction machinery shall consider that it is a device that directly drives the load, that is, it is related to the size, nature and d...

15/Sep2021

What If The Pump Doesn't Deliver Oil? Hitachi Excavator Technician Troublesho...

Vane pumps are mostly used as medium and low hydraulic sources. Pay attention to the viscosity of hydraulic oil during use. It is recommended to use oil with 2.5 ~ 5 ° C eva50 viscosity, and regula...

15/Sep2021

How To Prevent Rust Of Loader Accessories?

Loader accessories shall be stored in a dry room for a long time. If you have to stop outside, you should choose a flat ground and lay it with wood. After parking, cover it with cloth to prevent po...

09/Sep2021

Trouble-shooting Of Vane Pump Of Kobelco Excavator

1. High noise 1. The surface of stator curve is not smooth. Polishing the surface of stator curve. (2) Verticality error between end face and inner hole of oil distribution pan, and between end fac...

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The Hydraulic Circuit Of Hitachi Excavator Leg Mechanism Is Analyzed

Correctly Use Hitachi Excavator Hydraulic System

What About The Hydraulic Clamping in The Hydraulic System Of Shengang Excavator?

For The Temperature Rise in The Hydraulic System Of Hitachi Excavator

Detailed Discussion On Crawling in Hydraulic System Of Shengang Excavator

Test And Inspection After Installation Of Hydraulic Cylinder Of Hitachi Excav...

How To Install The Hydraulic Cylinder Of Hitachi Excavator?

What If The Pump Doesn't Deliver Oil? Hitachi Excavator Technician Troublesho...

How To Prevent Rust Of Loader Accessories?

Trouble-shooting Of Vane Pump Of Kobelco Excavator