Excavator bucket rod action slow teach you a trick
Posted: Dec 10th, '24, 01:36
If the excavator wants to carry out its work smoothly, each action must be closely connected, and there can be no stalling, slow, weak, etc., especially when doing compound actions, the requirements are higher.
Fault symptoms:
The fault of the machine is very special, if it is to do any action alone, there is no problem, the rotation and boom compound action is normal, and the rotation and bucket compound action are not found abnormal.
But once the bucket rod and boom compound action, there will be a very obvious bucket rod slow action problem. Because the fault phenomenon is more complex, the owner did not hesitate to directly find the maintenance master for maintenance.
Fault diagnosis:
1, first of all, the single action of the excavator is no problem, then the problem of the oil circuit is first eliminated, and the walking is normal without deviation, then the output flow of the two pumps is certainly normal.
2, and then according to the description of the owner of the bucket rod and boom to do compound action, the bucket rod speed slowed down significantly, then it is very likely to be the cause of the combined valve, but after disassembly found that the valve rod no obvious wear problems, after cleaning the installation of the test machine fault phenomenon still exists.
3, according to the experience of the maintenance master, the rotary priority valve is stuck in the throttling position, which has a great possibility to cause failure. Because when the bucket rod action is done alone, the spool can work in the throttling position to supply oil to the bucket rod normally, and all the bucket rod action is not abnormal.
However, if you want the boom and the bucket rod to work at the same time, the rotary priority variable throttle valve should work in the maximum open position, and at this time the whole machine may work in the throttling position, so the bucket rod action is slow.
According to the judgment, the maintenance master removed the rotary priority variable throttle valve, cleaned and reinstalled, and the fault disappeared when the machine was tested again.
Matters needing attention
Although the problem of slow bucket rod has been solved, the maintenance master did not relax its vigilance, and it was found in further inspection that the oil quality of the whole machine was some black and the return oil filter was dirty.
This is also a very hidden cause of failure, so it is necessary to clean the filter element and the fuel tank, and replace the hydraulic oil. Here the problem of slow movement of the bucket rod was completely solved.
In SUMMARY:
All in all, although the machine owner's love machine has been solved the problem of slow composite action bucket rod, it also wasted a lot of construction time, and the project money did not get it but the wallet shrank first.
At the same time, it is also a reminder to the owners of the machine, the daily maintenance work of the excavator must not be delayed! The long-term accumulation of hidden dangers may cause greater failures when it is not worth the loss!
Choose DIG-DOG for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.dig-dog.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com
Fault symptoms:
The fault of the machine is very special, if it is to do any action alone, there is no problem, the rotation and boom compound action is normal, and the rotation and bucket compound action are not found abnormal.
But once the bucket rod and boom compound action, there will be a very obvious bucket rod slow action problem. Because the fault phenomenon is more complex, the owner did not hesitate to directly find the maintenance master for maintenance.
Fault diagnosis:
1, first of all, the single action of the excavator is no problem, then the problem of the oil circuit is first eliminated, and the walking is normal without deviation, then the output flow of the two pumps is certainly normal.
2, and then according to the description of the owner of the bucket rod and boom to do compound action, the bucket rod speed slowed down significantly, then it is very likely to be the cause of the combined valve, but after disassembly found that the valve rod no obvious wear problems, after cleaning the installation of the test machine fault phenomenon still exists.
3, according to the experience of the maintenance master, the rotary priority valve is stuck in the throttling position, which has a great possibility to cause failure. Because when the bucket rod action is done alone, the spool can work in the throttling position to supply oil to the bucket rod normally, and all the bucket rod action is not abnormal.
However, if you want the boom and the bucket rod to work at the same time, the rotary priority variable throttle valve should work in the maximum open position, and at this time the whole machine may work in the throttling position, so the bucket rod action is slow.
According to the judgment, the maintenance master removed the rotary priority variable throttle valve, cleaned and reinstalled, and the fault disappeared when the machine was tested again.
Matters needing attention
Although the problem of slow bucket rod has been solved, the maintenance master did not relax its vigilance, and it was found in further inspection that the oil quality of the whole machine was some black and the return oil filter was dirty.
This is also a very hidden cause of failure, so it is necessary to clean the filter element and the fuel tank, and replace the hydraulic oil. Here the problem of slow movement of the bucket rod was completely solved.
In SUMMARY:
All in all, although the machine owner's love machine has been solved the problem of slow composite action bucket rod, it also wasted a lot of construction time, and the project money did not get it but the wallet shrank first.
At the same time, it is also a reminder to the owners of the machine, the daily maintenance work of the excavator must not be delayed! The long-term accumulation of hidden dangers may cause greater failures when it is not worth the loss!
Choose DIG-DOG for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.dig-dog.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com