Excavator boom falls off seriously? This is a cost-effective and fast way to repair it
Posted: Jan 6th, '25, 21:33
The boom falls quickly
For the excavator to work smoothly, the working device must rise and fall quickly and accurately every time. For example, if the boom falls seriously, gets stuck, or cannot fall accurately during the work process, it will not only delay the construction period, but also be troublesome to repair.
The reason why the above situation is troublesome to repair is that many of the fault phenomena are similar, but the causes of the faults are very different, so everyone delays half a day to check and deal with them, but finds that the fault phenomenon still exists.
Today, the editor will introduce the fault phenomena and treatment methods of the boom falling in detail, hoping to help everyone.
Fault phenomenon and cause
▊First: The wear of the holding valve causes the cylinder to fall seriously. If the holding valve is worn or stuck in a certain position, it will cause the cylinder to fall. If the boom falls seriously, the boom will fall very quickly whether it is working or stopped. At this time, the boom holding valve should be checked
There is another situation where the boom cannot fall quickly, but the boom can be raised. This is also a problem caused by the stuck holding valve. (Generally, only the boom of an excavator has a holding valve, some forearms have a holding valve, and the bucket basically has no holding valve)
▊Second: Severe wear of the oil port overflow valve (overload valve) will also cause the working device cylinder to fall by itself. In this case, just find the corresponding action overflow valve, remove it for cleaning and inspection, and replace it directly in serious cases.
(Each action of the boom, forearm and bucket cylinder has an overflow valve. Generally, there are 6 action oil port overflow valves on the distribution valve of the excavator)
▊Third: If the action valve stem is worn, the corresponding action cylinder will fall by itself. In this case, the valve stem must be replaced to solve the problem. Here I would like to remind everyone that as long as the hydraulic oil filter element is replaced frequently, this situation will be greatly avoided.
▊Fourth: Wear of the cylinder piston oil seal is a common problem, usually caused by high temperature of hydraulic oil and untimely replacement of hydraulic oil. Some of them are caused by aging due to long use.
At this time, as long as the cylinder barrel is not worn, the oil seal can be directly replaced. If the cylinder barrel is pulled, the cylinder assembly must be replaced.
Choose BONOVO 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.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com
For the excavator to work smoothly, the working device must rise and fall quickly and accurately every time. For example, if the boom falls seriously, gets stuck, or cannot fall accurately during the work process, it will not only delay the construction period, but also be troublesome to repair.
The reason why the above situation is troublesome to repair is that many of the fault phenomena are similar, but the causes of the faults are very different, so everyone delays half a day to check and deal with them, but finds that the fault phenomenon still exists.
Today, the editor will introduce the fault phenomena and treatment methods of the boom falling in detail, hoping to help everyone.
Fault phenomenon and cause
▊First: The wear of the holding valve causes the cylinder to fall seriously. If the holding valve is worn or stuck in a certain position, it will cause the cylinder to fall. If the boom falls seriously, the boom will fall very quickly whether it is working or stopped. At this time, the boom holding valve should be checked
There is another situation where the boom cannot fall quickly, but the boom can be raised. This is also a problem caused by the stuck holding valve. (Generally, only the boom of an excavator has a holding valve, some forearms have a holding valve, and the bucket basically has no holding valve)
▊Second: Severe wear of the oil port overflow valve (overload valve) will also cause the working device cylinder to fall by itself. In this case, just find the corresponding action overflow valve, remove it for cleaning and inspection, and replace it directly in serious cases.
(Each action of the boom, forearm and bucket cylinder has an overflow valve. Generally, there are 6 action oil port overflow valves on the distribution valve of the excavator)
▊Third: If the action valve stem is worn, the corresponding action cylinder will fall by itself. In this case, the valve stem must be replaced to solve the problem. Here I would like to remind everyone that as long as the hydraulic oil filter element is replaced frequently, this situation will be greatly avoided.
▊Fourth: Wear of the cylinder piston oil seal is a common problem, usually caused by high temperature of hydraulic oil and untimely replacement of hydraulic oil. Some of them are caused by aging due to long use.
At this time, as long as the cylinder barrel is not worn, the oil seal can be directly replaced. If the cylinder barrel is pulled, the cylinder assembly must be replaced.
Choose BONOVO 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.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com