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Allis 917H - Sitting Still In My Field - No Motion

hydrostatic

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#1 DonJ207 OFFLINE  

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Posted May 11, 2014 - 03:16 PM

So... you folks seem like you might offer some answers.

 

My Allis 917H (1984) may have slowed speed some over the past years... Today, it stopped moving, from working fine to sitting at the farthest corner of my field. Engine is running fine. She just stopped. No forward, backward or hydro lift action.

 

Further suggestions? I'll go check the fluid level but I don't imagine it's that. It has been topped up fairly recently.

 

Use this baby for mowing and blowing mostly. Today it was moving a trailer of brush. A couple weeks ago in tilled a 1000 SF garden.

 

I'm bumming, grass needs cutting.

 

Thanks for any suggestions.

 

Don


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#2 Texas Deere and Horse OFFLINE  

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Posted May 11, 2014 - 03:50 PM

Hety Don, Welcome to GTtalk. Have you changed the hydro filter lately, it may be plugged up. Also maker sure the linkage is actually working the level on the hydro unit. Have you checked to make sure the input shaft is turning on the hydro unit and you haven't lost a coupling?


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#3 boyscout862 ONLINE  

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Posted May 11, 2014 - 04:52 PM

Welcome to GTT. You can download the Manual from our Manuals Section. If you try to pull the tractor there is a relief valve that must be held open or you can damage the trany. Good Luck, Rick

 

Try this   http://gardentractor...service-manual/

 

Some Simplicity Manauals may help too.


Edited by boyscout862, May 11, 2014 - 04:58 PM.

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#4 JDBrian OFFLINE  

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Posted May 11, 2014 - 05:00 PM

Welcome to GTTalk Don. I'd do as Brian suggested above and make sure the hydro input is being turned. I'm not certain how those tractors drive the hydro but you need to essentially check the drive train from the engine shaft to the hydro input looking for a disconnect somewhere. If the hydro is being spun then you need to look at the output of the hydro drive (axles) and check them for movement. A sheared axle key will cause a no go. If the hydro has a bypass lever for pushing the tractor then check it to make sure it didn't get bumped by something. As mentioned a busted linkage could be the issue. Hydros are pretty reliable and only as a last resort would you look for internal problems. Hopefully it's something simple. 


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#5 DonJ207 OFFLINE  

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Posted May 11, 2014 - 05:04 PM

I'm betting bevel box. Input is good, no output to PTO or Hydro unit.

 

Trailer is in the field with it, so I'll winch it in and find a pull from the field.

 

Thanks for the input, figured I didn't want to pull it in general, I'll look for the relief valve.

 

The service manual isn't one I had yet. Thanks for the link.

 

Don


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#6 Talntedmrgreen OFFLINE  

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Posted May 11, 2014 - 08:41 PM

It's the BGB for sure if you can see the input shaft spin, and not the output.  Are you sure the input is spinning?  You pulled the deck and crawled under to watch it?  Otherwise, you may get lucky and have it be a busted driveshaft coupler.



#7 DonJ207 OFFLINE  

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Posted May 11, 2014 - 08:47 PM

I'm afraid that I did crawl under it and also minipulate the PTO only to hear it grind.

 

I'll make the call to my local dealer tomorrow to see what options they can assist with. Mowing the acreage with the 22" push isn't what I'm looking to do long term.

 

Not sure I'm up for this job myself... too many priority projects right now.

 

Thanks again for the thoughts.







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