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1. Exhaust from hydraulic pump 1. Loosen the air drain plug as shown in Figure 2-82 and check whether oil is leaking from the air drain plug. (2) Tighten the air drain plug after oil leaks out. The...
If there is a hydraulic drift in the working device (cylinder), follow the following procedure to check the cable and determine if the cause is on the cylinder sealing side or on the control valve ...
The excavator is composed of many components. Some faults will occur during the long construction process. Many of the faults customers have recently responded to are walking weakness. Now Master L...
1. Pilot control oil circuit diagram and cut-off position table for measurement The pilot control oil circuit is shown in Figure 1-3. The cut-off area for measurement is shown in Table 1-15. 2. Fau...
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...
