With a series of actions such as walking and rotating, the excavator completes very dangerous and difficult engineering work. It is precisely for this reason that the action of the excavator cannot be flawed at all. So when the excavator can't do the combined action, you can imagine how panic everyone will be. The following two reasons tell you why your Komatsu excavator can't do combined action.
Failure cause analysis I
1. There may be an error in the installation of the circuit or pump.
2. It may also be that a small oil pipe was connected incorrectly.
3. When the boom and jib are combined, the oil volume of the jib must be throttled. It is recommended to check carefully in this regard.
4. Under normal circumstances, the pressure of both pumps should be around 32000. When lifting the big back alone, the two pumps supply oil together, but when moving the forearm, the two pumps merge. Theoretically, it should be slower. Do you want to see whether your working mode is boom priority or rotation priority? The pressure of rotation, bucket and walking is about 18000.
Failure cause analysis II
1. There is too little hydraulic oil or the oil pump is weak.
2. Problems of oil cylinder and diverter valve; The oil seal of the oil cylinder leaks oil and is broken; The plunger of the oil cylinder is broken.
3. The hydraulic control valve is worn, and the hydraulic oil temperature is low when it is just started. When the hydraulic oil temperature rises, the density decreases, so the valve group has a gap and the oil cannot be sealed, so the pressure is relieved.
Through the analysis of the above two reasons, I believe you have understood that the excavator can't do combined action. In fact, it has an interconnected relationship with many components. We should check and judge in detail and solve the fault as soon as possible, otherwise the small problem will become a big fault, and we will lose!
