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1. Fault Phenomena The rotating speed is normal, but the rotating pressure is too high and there is periodic vibration sound. 2. Fault diagnosis and troubleshooting (1) Check whether this phenomeno...
1. Fault Phenomena The engine cannot start because the starting motor is not running. 2. Start-up system circuit diagram The starting system circuit diagram is shown in Figure 1-1. 3. Fault diagnos...
Bucket rod throttle valve The bucket operates next to the spool in the four-way change-over valve. When the boom and the bucket rod are operated at the same time, most of the pressure oil flows to ...
Komatsu Excavator Rotary Priority Valve is located next to the rotary operating spool in the five-way change-over valve. When the swing device and the bucket rod are operated at the same time, most...
If the loader is not stored for a long time, it should be carefully maintained, otherwise the loader accessories will be damaged. The following are the issues to be noted: _1. It should be parked i...
Maintenance and maintenance of hydraulic cylinders for loader accessories must prevent contamination impurities from mixing with hydraulic oil to maintain cleanliness: 1.Cylinders should replace hy...
The linear travel valve is next to the left travel control valve core in the four-way directional valve. When the travel and working (or rotary) devices are operated at the same time, the valve con...
The valve is composed of return spring 2, slide valve 4 and valve body 3. The structure is shown in Figure 2-13. The traveling shuttle valve is installed on the top of the four-way directional valv...
The hydraulic system of PC200-5, pc300-5 and pc400-5 Komatsu excavators is an open center load sensing system (olss system), which is an energy-saving system to reduce fuel consumption by controlli...
Phenomenon: When a 183 excavator working for more than 5600 hours lifts the boom for loading, it is found that the boom rotates and drops, and other actions are normal. What's the matter? ”Caus...
