Small excavator defect
Posted: Nov 26th, '24, 03:17
Small excavatordefect
The repair master arrived at the scene according to the defect phenomenon and consulted the relevant introduction of the hydraulic operation principle of the machine, and initially acknowledged the defect points and analyzed the reasons as follows:
1, the machine has planning and increase the regeneration function in the forearm recovery oil circuit, briefly introduce the benefit of the regeneration function is to avoid the forearm cylinder extended too fast under the effect of the forearm weight, and then the hole in the cylinder to constitute an adverse effect, on the other hand, it is also necessary to avoid the continuous phenomenon of the forearm and the recovery speed of the traveling forearm.
2, the key is that this function is through the ARM1 spool in the check valve and the forearm regeneration valve to end together, with this visible defect point we also want to key around the two parts open.
3, back to the operating principle of the machine, when the machine owner selects the excavatorconstruction method, the regeneration valve spool is in the saving position to bind the oil return of the cylinder rod cavity. When the oil pressure of the rod chamber is higher than the oil pressure of the rodless chamber, the check valve in the ARM1 spool opens, so that the oil return of the rod chamber returns to the rodless chamber to end the regeneration function.
4, so after the above introduction, we will be very easy to understand, assuming that the regeneration valve spool can not be in the saving position or the check valve in the ARM1 spool can not be smoothly opened, the regeneration function in the forearm loop can not be ended, and then the forearm is formed in the straight position to produce continuous.
Small excavatormaintenance process
According to the analysis of the above operating principles, the engineer looked at the regeneration valve spool and pilot oil circuit, and did not find abnormal defects, which can be cleaned immediately. When the repairman looked at the check valve in the ARM1 spool, he found that the check valve could not be opened due to the blockage of the saving hole in the front end of the check valve, which finally caused the defect.
Small excavatortreatment method
Since the defect was only caused by the blockage of foreign bodies in the saving hole, and there were no other abnormal wear and tear conditions, it was only necessary to completely clean the saving hole before starting the test. It was found that the continuous phenomenon of recovering the forearm did not recur, indicating that the defect has been removed.
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contact # : +86 158 6218 2088
email : sales@bonovogroup.com
The repair master arrived at the scene according to the defect phenomenon and consulted the relevant introduction of the hydraulic operation principle of the machine, and initially acknowledged the defect points and analyzed the reasons as follows:
1, the machine has planning and increase the regeneration function in the forearm recovery oil circuit, briefly introduce the benefit of the regeneration function is to avoid the forearm cylinder extended too fast under the effect of the forearm weight, and then the hole in the cylinder to constitute an adverse effect, on the other hand, it is also necessary to avoid the continuous phenomenon of the forearm and the recovery speed of the traveling forearm.
2, the key is that this function is through the ARM1 spool in the check valve and the forearm regeneration valve to end together, with this visible defect point we also want to key around the two parts open.
3, back to the operating principle of the machine, when the machine owner selects the excavatorconstruction method, the regeneration valve spool is in the saving position to bind the oil return of the cylinder rod cavity. When the oil pressure of the rod chamber is higher than the oil pressure of the rodless chamber, the check valve in the ARM1 spool opens, so that the oil return of the rod chamber returns to the rodless chamber to end the regeneration function.
4, so after the above introduction, we will be very easy to understand, assuming that the regeneration valve spool can not be in the saving position or the check valve in the ARM1 spool can not be smoothly opened, the regeneration function in the forearm loop can not be ended, and then the forearm is formed in the straight position to produce continuous.
Small excavatormaintenance process
According to the analysis of the above operating principles, the engineer looked at the regeneration valve spool and pilot oil circuit, and did not find abnormal defects, which can be cleaned immediately. When the repairman looked at the check valve in the ARM1 spool, he found that the check valve could not be opened due to the blockage of the saving hole in the front end of the check valve, which finally caused the defect.
Small excavatortreatment method
Since the defect was only caused by the blockage of foreign bodies in the saving hole, and there were no other abnormal wear and tear conditions, it was only necessary to completely clean the saving hole before starting the test. It was found that the continuous phenomenon of recovering the forearm did not recur, indicating that the defect has been removed.
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