I tried to use the 4000 this weekend to move some dirt with the dirt scoop. At low rpm the 3pt is real slow to raise. I have to give it more speed to get it listing. This is not normal for this tractor. It's a 69 3cly diesel and the pump is internal. I do not have much experience working on hydraulics or much testing equipment. Is there anything other than fluid to check first?
- Thread starter root
- Start date
Bern
Well-known Member
- Location
- Mount Vernon, WA
Does the speed improve with the lift off? If yes, then you have a pressure problem. If no, you have a flow problem.
Pressure problem could be a worn pump or failed relief valve. A worn pump will typically still pump somewhat OK with cold oil, and get
progressively worse as the oil heats up.
Flow problem is most likely a plugged inlet screen. This will require removing the pump to clean.
And of course, check your fluid level first.
Pressure problem could be a worn pump or failed relief valve. A worn pump will typically still pump somewhat OK with cold oil, and get
progressively worse as the oil heats up.
Flow problem is most likely a plugged inlet screen. This will require removing the pump to clean.
And of course, check your fluid level first.
Not sure what you mean by "does the speed improve with the lift off"
As far as temp I don't notice a difference between when it's hot and cold it works the same. Now when I start it up first time for the day it takes the 3pt longer to raise. Like the fluid maybe leaking out of the lift cylinder.
Bern
Well-known Member
- Location
- Mount Vernon, WA
Oops, I meant does the speed increase with the load (scoop) off? In other words, just the bare arms?
If it works the same hot or cold, I'm leaning more towards a flow issue, like a plugged inlet screen.
If it works the same hot or cold, I'm leaning more towards a flow issue, like a plugged inlet screen.
Keith Williams
Member
- Location
- Wellsville, Ohio
Root,
If you have a remote valve on it, you may have the handle slightly off center.
The valve off center will divert some of the flow and cause the 3 PH to be slow.
BTDT
Keith
If you have a remote valve on it, you may have the handle slightly off center.
The valve off center will divert some of the flow and cause the 3 PH to be slow.
BTDT
Keith
Bern
Well-known Member
- Location
- Mount Vernon, WA
The suction screen on a 4000 is accessed by removing the top cover or splitting the tractor.
Bern
Well-known Member
- Location
- Mount Vernon, WA
If I had a 4630, I'd be using it more than my 4000 also.
Sean in PA
Well-known Member
Have you tried turning the flow control knob?
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