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Cub cadet 129 dump valve?


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#1 Jkrogers OFFLINE  

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Posted December 20, 2011 - 02:00 PM

I recently purchased a 129 with hydrostat as a project tractor. It has several missing parts and the lever on the hydrostat housing cover is not attached to anything. I think this is the dump valve lever? Does anyone have a diagram of the linkage and how it works? Thanks, I am new here.

#2 junkman1946 OFFLINE  

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Posted December 20, 2011 - 04:24 PM

Congrats on your 129 and welcome aboard. That lever does not "hook" to anything. If you have the cover off , look on the top front of the transaxle for 2 little "buttons" (for lack of a better word). These are the dump valves for the hydro. With the cover is in place , when you lift the lever it will come in contact with these buttons, and dump the hydro, so you can push the tractor.
These relief valves tend too stick when not used frequently and are fairly expensive to replace.
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#3 caseguy OFFLINE  

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Posted December 20, 2011 - 05:39 PM

:wave: Jkrogers Welcome to GTtalk! I don't know much about the Cubs and even less about the hydro's, but I wanted to say Hi! It sounds like your getting the help you need anyhow. We'd like to see some pictures of you 129 when you get the time! Thanks for signing up!

#4 EricFromPa OFFLINE  

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Posted December 20, 2011 - 11:22 PM

You can take them out and give them a good cleaning if they are stuck.They're fairly simple to rebuild to.Couple new O rings and a good scrubbing maybe a new spring if it's broken and they're good as new.

#5 Jkrogers OFFLINE  

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Posted December 21, 2011 - 09:17 AM

Thanks, I will take another look at it. Could there be a stop missing on the lever? It slides in and out and is free spinning right now. Also someone short circuited the button switch on the brake assembly. Why would they have done this and if I hook it up correctly what kind of problem might I find that they were trying to bypass?

#6 LTD OFFLINE  

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Posted December 21, 2011 - 12:42 PM

Here is a diagram. Parts and Diagrams for Cub Cadet 129 Part No 7 is probably broken.
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#7 Salatino OFFLINE  

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Posted December 21, 2011 - 12:47 PM

what do you mean ,short circuit. thays just a safety switch isnt it. I'm sure they bpassed it so they didnt have to push the brake in to start it . I'm sure there the same on a gear drive cub. A few months ago i had to bypass mine,the original wiring was in bad shape. I bypassed mine at the switch,i think.I'd have to look,
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#8 Jkrogers OFFLINE  

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Posted December 21, 2011 - 04:00 PM

Oh, O.K. that makes sense that it is just a safety switch. I will hook it back up the way it is supposed to work and see what happens. Thanks!

#9 Jkrogers OFFLINE  

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Posted December 21, 2011 - 04:02 PM

Yes, thank-you I don't think that part is there.

#10 Salatino OFFLINE  

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Posted December 21, 2011 - 06:31 PM

Not a problem, Where did you look for it at? I know on the gear drives there on that center brace, I'm sure the hydro's are the same

#11 Amigatec OFFLINE  

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Posted December 21, 2011 - 07:47 PM

It should look like this, the plate pushes on the switch.

Attached Thumbnails

  • IMG_3597.jpg

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#12 Jkrogers OFFLINE  

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Posted December 21, 2011 - 08:57 PM

I took a look at it tonight. The dump valve lever is missing. The valves freely move in and spring back out so, that is a good.

#13 Salatino OFFLINE  

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Posted December 22, 2011 - 08:10 PM

Oh ok thanks for puttin that pic up , I wasnt sure if it was like the gear drive .




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