Causes and solutions of arm drop of amphibious excavator

Views : 664
Author : Nico
Update time : 2022-04-26 11:43:56

There are some defects in the amphibious landing gear of amphibious excavator, which is really a headache problem. Have you ever had an amphibious excavator lose its arm? Why did your amphibious excavator lose its boom? How to solve the telescopic boom fault?

First: why will the arm of the amphibious excavator fall down

Amphibious excavator's lowering arm is also known as lifting arm, automatic lowering arm, lowering pump and so on. Simply put, the fall of the Reach boom is actually a weakness of the motor reach boom's performance. When the motor boom is lifted, the upper and lower boom is automatically lowered without lever control.

When the amphibious excavator falls off from the telescopic arm, it will have different performance.Fault phenomena can be roughly divided into big arm fall off, lower arm fall off, middle arm fall off, cold amphibious excavator normal but hot amphibious excavator fall off, etc.

 

Second: Seven common reasons for arm drop of amphibious excavator

  • The arm drop caused by hydraulic oil failure, the normal arm drop of hot amphibious excavator in cold amphibious excavator, is likely to be a problem with hydraulic oil.
  • The hydraulic cylinder of amphibious excavator fails, especially the oil seal of the hydraulic cylinder is damaged or aging, and the internal leakage of the oil seal leads to the arm falling. to
  • Distribution valve valve hole blockage, spool wear, spool clearance is too large, distribution valve main safety valve wear damage, resulting in large arms fall.
  • When the oil seal of the large and small arm safety relief valve is damaged, a certain amount of leakage will be caused, resulting in the phenomenon of arm drop.
  • The arm drop caused by the poor sealing of the distribution pump is also called "unloading". At this time, it is necessary to replace the sealing ring of the distribution pump
  • Hydraulic pump proportional solenoid valve joint poor contact will also cause large and forearm off.
  • The boom drop is severe (oil temperature around 45℃, bucket tooth drop more than 95mm in 5 minutes), the most likely cause is the main valve blockage.

 

Third: How should we do if Amphibious excavator boom falling?

  • Check the amphibious excavator working environment temperature, hydraulic oil type selection is improper, hydraulic oil is used inferior.
  • In case of boom failure, first reduce the boom pressure and carefully observe whether the boom drops rapidly.
  • Check whether the hydraulic cylinder and the oil seal of the cylinder are faulty. If the oil seal is not well sealed, the oil will leak. Replace oil seal in time.
  • After replacing the oil seal, check the distribution valve and boom oil return safety valve if you want to return the arm.
  • Check whether the working pressure and pilot pressure of the main hydraulic pump of amphibious excavator meet the requirements.

Related News
Read More >>
How To Choose The Right Compact Wheel Loader How To Choose The Right Compact Wheel Loader
Apr .16.2024
Discovering the ideal compact wheel loader entails considering various factors, from size and bucket capacity to engine power and hydraulic systems. Contact DIG-DOG machinery factory today to explore the range of options and find the compact wheel loader that perfectly suits your needs. When navigating through your choices, remember the crucial aspect of understanding "how to choose the right compact wheel loader," ensuring that your investment aligns perfectly with your operational requirements.
How Much Does a Forklift Weigh? How Much Does a Forklift Weigh?
Apr .10.2024
For instance, a forklift with a rated capacity of 1 ton may have a self-weight of around 2 tons, while a forklift with a rated capacity of 2 tons may weigh around 3.5 tons. Typically, internal combustion forklifts can range in weight from 1 ton to 10 tons, with load capacities varying from 1 ton to 5 tons.
How Much Does a Backhoe Weigh How Much Does a Backhoe Weigh
Apr .09.2024
Depending on the model, the machine weight of a DIG-DOG backhoe can range from approximately 3.5 to 9.3 tons. A heavier machine provides more traction and stability when working on softer terrain. A lighter loader delivers better results when you're concerned about maintaining surface integrity.
How Much Does a Mini Excavator Weigh How Much Does a Mini Excavator Weigh
Apr .07.2024
The weight of a mini excavator varies depending on the specific model within the DIG-DOG factory offers a diverse range of machines weighing from 1 ton to 3.5 tons and featuring varying powers and bucket capacities. Whether it's in narrow city streets or complex construction sites, mini excavators can easily handle various excavation, loading, and transportation tasks. Their widespread application not only improves project efficiency but also reduces the costs, injecting new vitality into the development of modern construction, agriculture, forestry and engineering industries. The DIG-DOG DG10, with its 7 KW power, 0.025 m³ bucket capacity, and a operator weight of 1 ton, is ideal for small-scale excavation jobs.  However, for such an important construction equipment, we cannot but ask: how much does a mini excavator weigh? Today, let's explore this question.