My samsung, 1995 six ton wheel excavator stopped crawling ,swinging and even the stick and boom stopped working I got my main hydraulic pump checked and as per mechanics advice got it changed as the shaft and the rotor of the main hydraulic pump broke. Installed rebuilt main pump it worked for about ten minutes and stopped again . Boom stick and blade functions are working but not swinging or crawling. The pressure at the swinging motor is 250 and 300 . When the stick is operated the hydraulic pipes attached to the swing motor vibrate. Please advise. I will be grateful if anybody can advise Please.
Hi ashfag. Do you have machine hydraulıc shematic. if you have, can you share
Sorry dont have shematic , opend swing motor its ok , checked valves look good .
Does the swing motor have a braking system? Does the swing motor brake release? Is pilot oil coming to release the brake?
I have to check with the mechanic. Mechanic took the swing motor out . The shaft for the blade found broken . That might be the reason. Dont know the reason why machine is not crawling .