1250 Cub Cadet help!!!
 

Hi everyone,

I recently inherited a 1250 IH cubcadet hydrostatic (75' I think.) it's in ridiculously good shape and obviously well maintained. It sat a my uncles house for 3 years before I was able to pry it away from him. It started right away and purrs like a kitten. The problem- it won't drive. Let me elaborate; it will creep forward a few feet then stop. No reverse. It is 'trying' to move. Checked the hydro fluid; full and pretty clean. I would love to get this gem up and running as it is nearly 15 years older than myself! Is there a tran bypass I'm not seeing? Should I replace hydro filter? It rolled relatively easy when we pushed it a short distance to the trailer. It also rolls when the engine is running. Again it sat for nearly 3 years (or more)

Thanks a bunch!

Your hydro valves sound like they are bad. I would change them or get them fixed. A hydro fluid and filter change would help also. I know that there is a guy that makes them or something like that on here. Hopefully some one else can help you with that hook up.

First, welcome to OCC.........:Welcome2:

The first thing I would check, is to see if there is a broken "spirol pin" at the Hydro Transmission Input Shaft to Drive Shaft Coupler. See image. These are known to break. What is typically seen, is the drive shaft spins normally but the input shaft to the hydro unit either spins slowly due to friction or not at all.

the spirol pin looks to be in good shape (shaft is turning pump)

filter?

oh, and here's a few pics of the beauty

Make sure it keeps turning when you try to move it. You have to look at the pump shaft. If the key is sheared, the driveshaft will always turn.

You weren't kidding, that thing looks great.

The filter can be seen from the bottom side, coming from the hydro pump, with the top facing the front of the tractor. Hard to miss, unless it's covered in dirt/oil sludge. It looks just like an automotive oil filter but it's not. It's a hydro specific filter and can be found at places like NAPA.

Google your Cub model for the hydro filter number, or someone will be along shortly with the number fresh off the top of their head!

:beerchug:

Napa: 1410
Wix: 51410

:biggrin2:

That is one nice looking Cub for sure. I would lean toward the spirol pin too, but I am far from an expert.

Your situation will most likely be, the Spirol Pin failure or a plugged Hydro Filter. Either will cause a lack of fluid to travel throughout the Sundstrand Hydraulic Unit.

If its not a broken pin I'd go ahead and change the fluid/filter, seems like when they sit the fluid gels in the filter which causes all sorts of issues.