FEL has no power. Barely will come off the ground at WOP. I did check the pressure at the rear remote port its showing 2000 psi. Can someone help me with further troubleshooting my issue?
M7040 DT Hydraulics
- Thread starter Matt1976
- Start date
Your tractor has two pressure relief valves.
The loader valve has its own. The loader valve feeds the rear of the tractor thru a power beyond port on the loader valve.
If the loader valve's relief valve is off, it will restrict the pressure you see at a rear remote.
However, providing more history would help.
Did this condition develop suddenly?
Did you have any hoses disconnected from the loader valve?
How many rear remotes do you have?
Are you certain that a rear remote's lever is not partially on?
Dave
The loader valve has its own. The loader valve feeds the rear of the tractor thru a power beyond port on the loader valve.
If the loader valve's relief valve is off, it will restrict the pressure you see at a rear remote.
However, providing more history would help.
Did this condition develop suddenly?
Did you have any hoses disconnected from the loader valve?
How many rear remotes do you have?
Are you certain that a rear remote's lever is not partially on?
Dave
It blew the hose coming from the pump to the FEL control valve. Changed the hose and has not been the same since. Changed the hose again thinking it may had been restricted or faulty. Still the same. Checked all the cylinders to ensure none were bypassing internally. Lead myself to believe it could be the the control valve itself. Ordered a new one. Installed it. Still the same. Adjusted the relief on the loader valve. No change there. It has a single rear remote. It is not partially on. Lift arms work but are weak as well. Engine needs to idled up to lift the arms.
Welcome to OTT
How many hrs has tractor been operated since hyd filters were changed? Is 3 pt fully raised & 3 pt relief valve open due to incorrect setting of feedback rod?
How many hrs has tractor been operated since hyd filters were changed? Is 3 pt fully raised & 3 pt relief valve open due to incorrect setting of feedback rod?
Is it possible, after the hose blew, that you removed more than one hose from the loader valve?
Your symptoms sure sound like a hose is in the wrong place on the loader valve.
Dave
Filters and oil was changed at the same time I changed the loader valve. Not even an hour since. Only been running while trying to fix this thing. Hoses are not swapped to the best of my knowledge. 3 pnt was all in working condition. Is there a plumbing diagram available anywhere?
North Idaho Wolfman
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Do you have a self leveling loader as it has a different valve?
I have attached the info for the self leveling.
Dave
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I'll almost bet that the hoses from the pump to the loader valve are installed wrong causing the pump to be deadheaded. This is what caused the hose to blow and likely has now damaged the pump. This is very easy to do unfortunately, and isn't readily apparent, I did it one myself on a new tractor. The tractor worked good for a few weeks until the owner actually stressed it by running it all the way to the top. see attached page from assembly manual
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All the hoses are correct. Machine was operating properly. The hose blew. Hose was replaced. Has been the same since.
good! Then you need a flow/ pressure test on that pump. ( or just buy a new one and try it)
esery
May I ask what you're suggesting to replace?
Back when I served as a dealer service manager I was taught one should perform "good diagnostic's" before replacing any parts. My guess is a relief valve isn't seated correctly.
Thanks,Jim
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I certainly agree that the pump should be properly tested rather than just replaced. But I doubt the owner is in possession of a flow-meter to test it with. He has already replaced the loader control valve which contains the relief valve so that almost eliminates the relief valve from being the problem. The symptoms are typical of a failed pump so if the customer is not wanting to take it to a mechanic for proper diagnosis then pump replacement is the other option. If the pump IS the problem he will have saved himself a few hundred dollars . I would never just replace a pump in the shop but from a customer perspective it is a little different situation.