It's in the hydraulic control tank.
So I need to drain the tank and dissassemble?
Yes, that is how you would gain access.....but I'd be more suspect of the cylinders themselves as in leaking piston seals.
Sounds like a pump to me. To check the cylinders get the bucket up as far as you can, put it in hold and watch the drift.
Later Bob
The cylinders are old and tired, but the bucket supprised me by staying up.
This thing goes from working to not working rather quickly. Don't know if that is a clue or not. Just seems it does not have to heat up much if heat is what is doing it.
"Works good until warm" roughly translated means a leak and a worn out pump is also a leak. Drain the tank and take the pump off and open it up>
Later Bob
"Works good until warm" roughly translated means a leak and a worn out pump is also a leak. Drain the tank and take the pump off and open it up>
Later Bob
Can you hear the main relief valve lift at the end of cylinder travel?