Gt14 sundstrand hydro

[978GT14 3]

I was rototilling and broke the output shaft on my sundstrand pump.

Can anybody help me get my horsey back on track? 

Can the shaft be replaced? 

Or does anybody have one?

I don't want to have to put my horse down. 

Please advise.

 

[Pullstart 64,645]

  those shafts were flame hardened, or surface hardened. At one point, Wheel Horse started suggesting that any repairs be made using standard 3/4” solid drill rod.  The pump needs to be disassembled for replacement, but a machine shop could likely make you a replacement.

Edited April 8 by Pullstart

[953 nut 58,030]

@daveoman1966 is our resident Sundstrand Hydro expert. He should chime in soon.

3 hours ago, 978GT14 said:

rototilling and broke the output shaft on my sundstrand pump.

When you say output shaft are you referring to the shaft with a double pulley on it? If that is the shaft in question a good closeup picture would be helpful because they came in a few different configurations.

[978GT14 3]

Yes I called in an output shaft but maybe you call it an input shaft 

Or maybe an input / output shaft but it is the shaft with the double pulley on it. 

Thank you for the welcome 

I am what you might call a wheel horse nut 

I have four of them so far 

Two are running and two are not 

But the gt14 is my favorite and I hope I can get her going again 

I spoke with LJ today and they are going to pull a shaft out for me and send it to me with the seals and gaskets 

I'm a carpenter by trade and a half-ass mechanic at night I hope I can pull this off because I really love the old horse

[953 nut 58,030]

I love my GT-14 also.  Here are free downloads that you may want to go over.

 

[978GT14 3]

Thank you for the intel.

I'm going to give it my best shot

 

[gt14rider 851]

Hi  Fyi your pump should be a 90- 2062 

 

  There are step by step info in sundstrand  manual. There were different input shafts,  could you get some pics of pulleys and end of shaft. If you 

 

 

Edited April 11 by gt14rider
Wrong info.

[gt14rider 851]

I can't post this but here's a screenshot 

[oliver2-44 10,375]

As you work on you hydro, remember cleanliness is extremely important for the future life of its internals. 

[gt14rider 851]

978gt14 ,  look in the  instructional thread and video,  section there's alot of hydrogear info. daveoman has a thread,  there are 3 different shaft ends, what pulley do you have?  A Two piece, or double  pulley.

[978GT14 3]

Thank you for all the help! 

Here is the double pulley that snapped off while tilling. 

I spoke with LJ in Michigan and wouldn't you know it he has a replacement shaft for it! 

Easter Sunday seemed like a good morning to start the resurrection of the old horse. 

They are shipping out the shaft on Monday with seals and gaskets so I started digging into it this morning

 

I'm pretty good at taking things apart...

It's getting them back together that's the real chore.

 

I was hoping to find a complete unit but 

I'm always up for a good challenge

 

Thanks again for all the Intel

 

 

[978GT14 3]

On 4/10/2025 at 7:53 PM, gt14rider said:

Hi  Fyi your pump should be a 90- 2062 

 

  There are step by step info in sundstrand  manual. There were different input shafts,  could you get some pics of pulleys and end of shaft. If you 

 

 

No I have a different one

90-2070

[978GT14 3]

And I was hoping somebody could tell me a little bit more about my tractor with this model number and serial number I'm not sure what year it is? 

Thanks

[953 nut 58,030]

Your GT-14 is a 1972 and the Sundstrand it left the factory with would have been a 90-2060 Hydrogear. Sundstrand transmissions from other models can be modified to fit the GT-14 by changing the output gear.

Edited April 20 by 953 nut
fat finger