farmall h hydrolic oil.

Mike Henry · Feb 16, 2015

guys I need help. My H sits inside a non heated building and after the cold spells of late I am experiencing that the tractor will start ok but I cant even let the clutch out the oil is so thick. My hydrolic system as 20 weight motor oil, I cant remember what the rear end has in it. Can I change the weight of fluids to prevent this from happening? if so How thin can I get. The tractor is mainly used for snow plowing and light/heavy lifting. Stuff I cant lift or move by hand. Thanks for any help given.

Zachary Hoyt · Feb 16, 2015

I put hytran equivalent oil in the hydraulics on my H back when I had it, and we got down well below 0 at times. I used 80/90 gear oil, but the 300 I have now needs hytran in the transmission/rear end because of the TA and it doesn't seem to cause any problems to the gears, so I assume that would be true for the H as well but hytran does leak more easily out of any compromised seals.
Zach

glennster · Feb 16, 2015

check the rear end oil and see if there is water in there. if it freezes in there it will stall when the clutch is let out. looen the lower drain carefully, thereand have a 5 gallon bucket handy. could be 2-5 gallons of water in there.

old · Feb 16, 2015

Had the same problem on my Ford 841 and it was not due to the oil being to thick it was because of a big ice cube in the transmission which is likely to be your problem

GeneMO · Feb 16, 2015

What is in your hydraulic system should have no effect on the stiffness of the clutch.

As for the rear end, I too suspect some water is in there.

If it ever warms up (set it in the sun in a south facing shed), let the drain plug out a little and see if you can drain off some water. Most run 80-90 gear lube in the rear end. We always run 30 wt in the hydraulic pump.

Gene

dhermesc · Feb 16, 2015

You can't let the clutch out with the hydraulic belly pump engaged or you just can't let the clutch out period?

If you can't let the clutch out without anything else engaged the rear end has water in it. If its enough water to lock up your transmission I'd make plans to drain it. If there's that much water in it I'd just plan on draining the entire rear end - not just the drain the water out and try to get the plug back in to keep the oil. Imagine how nasty that oil has to be after all these years.

When I drained my 350 it had about 5 gallons of water and about 7 gallons oil in it. Freezing with that much water can't be good on castings.

Goose · Feb 16, 2015

Had the same thing happen on both an H and a VAC Case.

Wayne in MN · Feb 16, 2015

If you have 90 weight gear lube, you cannot let the clutch out very quickly with cold oil. Hold the clutch down & get the engine running well and gently let the clutch out; see if it will finally rotate the gears (in neutral). GL 90 is almost like a stiff grease at cold temps.
If you have ice in the transmission housing, that is a different matter.
Remove the drain plug & see what comes out. Poke a long screwdriver in; are you chipping ice or finding heavy oil??

stonerock · Feb 16, 2015

dhermesc....has your answer

David G · Feb 16, 2015

I would bet on ice in the transmission.

john *.?-!.* cub owner · Feb 16, 2015

Since an H belly pump drives via the transmission, ice in the hydraulics would cause it to stall also, since the pump is always moving oil. The control just changes where the oil goes.

farmall h hydrolic oil.

Mike Henry

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Zachary Hoyt

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glennster

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old

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GeneMO

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dhermesc

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Goose

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Wayne in MN

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stonerock

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David G

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john .?-!. cub owner

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