I just bought an Koehring 6630-7L Excavator and the hyrdaulics have slowed and after about 30 mins of run it barely moves. Its all hydraulics not just one single action. All filters have been changed and fluid. Any other suggestions? Im not too familar with this machine just was a cheap buy.
and the engine runs fine. it boggs down alot when attempting to move.
Is the pump making noise when it does this? Are there any new leaks on the ground or belly pan ? I am thinking possibly a suction line plugged or collapsed. I don't know the machine but its just a guess. Pj
Sounds like an engine governor issue.
I would check the suction filter in the tank first