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helpmefixmygt14

GT 14 weak hydro

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helpmefixmygt14
Posted (edited)

i bought this gt14 and don’t know much about it, got it running good and it really doesn’t like hills or towing anything. help would be very much appreciated. thanks

 

Edited by helpmefixmygt14

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daveoman1966

The GT-14 was made from 1969 -1972...meaning it is 50+ yrs old. With out a doubt, the hydro pump has internal wear causing low power which deteriorates as the hydro warms up...right?  There are internal soft brass surfaces that get scored causing loss of hydraulic pressure, leading to power loss.  The only solution is a rebuild.  You can try replacing the filter and fluid (ATF or motor oil) which mignt help a little bit, but eventually rebuild is in order.  Your GT-14 tractor has the Sundstrand model 90-2062 Hydro-Gear unit and I have the 'refurbished' parts you'll need.  That is, 1) Cylinder block & 9 brass pistons (2) charge pump housing with Gerotor set, (3) Thurst plate.  I can also provide you with a supplier for the Gaskets and O-rings needed. ps..I've rebuilt many of these over the 30 years of working with Wheelhorse tractors.

For further info and pics, send me an email.  

My email is:  daveoman@windstream.net    

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953 nut

:WRS:

Is the transmission strong in reverse but not when going forward? There are spring loaded valves called "Acceleration Valves" that control fluid flow and can cause poor performance if the springs have been broken.

Hear is a free download of the Sundstrand Service Manual. There is a trouble shooting guide in there that should be helpful.

 

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Pullstart

:text-welcomeconfetti:

 

The GT14 is an awesome machine once you get these bugs worked out.  There are fellas here that could likely fix these automatic transmissions blindfolded.  You’ll be doing tractor things in no time!

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oliver2-44

The guy above have got you fixed up.

Start with checking the small things

Check the transmission oil level and condition ( It could be red which means its ATF, or yellow/brown 10w30 engine oil)

If the fluid is milky gray it has water in it and definitely needs to be changed..

 

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helpmefixmygt14

i checked the fluid and it wasn’t low and i can push the tractor when the relief valve is open or closed and it moves in both too

 

 

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helpmefixmygt14

some pics

E519543A-C234-482F-B06F-57022A57149A.jpeg

96642A8D-DB5D-4A14-BBF1-143D86F85FC9.jpeg

928E7752-3B1C-4DA4-B00D-DF6B8EA8798D.jpeg

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helpmefixmygt14

and it’s equally weak in both directions 

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daveoman1966

These are the Internal components I can provide.  The O-rings & Copper seals are new.  Both faces of the Charge Pump Housing AND the Gerotor set are resurfaced.  The Brass face of the 9 Piston slippers are hand refinished as well as the Base of the Cylinder Block.  The Thrust Washer is perfectly smooth too.  

Email for price of lot   I am:

daveoman@windstream.net

I have other good used internal parts too...valves, springs, etc.

2062 003.JPG

2062 004.JPG

2062 002.JPG

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