2240 JD hydraulic

Robin Babb · Nov 21, 2012

I have a 2240 JD tractor with frontend loader,
and the control valve and steering column get to hot
to touch after running only a few minutes.

DEEREMEYER1 · Nov 21, 2012

Internal leak.

buickanddeere · Nov 21, 2012

What kind of loader control valve? How is the valve plumbed into the tractor? Is the problem sudden, always existed or has gradually developed?

Tx Jim · Nov 22, 2012

(quoted from post at 21:49:57 11/21/12) I have a 2240 JD tractor with frontend loader,
and the control valve and steering column get to hot
to touch after running only a few minutes.

2 easy diagnostic steps are to isolate steering and loader valve. Remove steering supply line and cap fitting and see if heat goes away. Disconnect loader valve return line and with both spools in neutral see if any oil comes out return hose(none should) with engine running.

Resting Relics 1 · Nov 22, 2012

Hey Robin,
As DEEREMEYER1 says you have a high pressure leak internally somewhere that is causing the main pump to try and overcome the leak which in turn makes the oil get hot fast. This is not unheard of in closed center hydraulic systems, but the trick is to find out where the leak is. I would do as the guys have mentioned here and start isolating things starting with the loader valve as that's probably the easiest. My guess is that it's probably in the steering valve because the loader valve and steering are not connected per-say. The way you describe it all your hydraulic stuff should also be hot if you were using them because all the hydraulic oil must be hot but you only notice the steering and the loader valve because that's where your sitting and that's what your using. It is also a fairly common problem with steering valves on these tractors especially with loaders no them. If that's the problem a repacking will be needed. Good Luck!
John

Tx Jim · Nov 22, 2012

(quoted from post at 11:42:35 11/22/12) My guess is that it's probably in the steering valve because the loader valve and steering are not connected per-say. The way you describe it all your hydraulic stuff should also be hot if you were using them because all the hydraulic oil must be hot but you only notice the steering and the loader valve because that's where your sitting and that's what your using. John

John
I'm not trying to start a fight BUT normally the hyd function that is leaking internally on a closed-center hyd system will be hotter than the rest of the hyd components. Both the components that Robin mentioned that are exhibiting heat are the easiest components to check for internal leakage.

2240 JD hydraulic

Robin Babb

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DEEREMEYER1

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buickanddeere

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Tx Jim

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Resting Relics 1

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Tx Jim

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