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317 Sudden Vibration


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#1 JohnDeere214 OFFLINE  

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Posted August 17, 2013 - 02:32 PM

Had the 317 out today leveling my gravel driveway and suddenly started getting a vibration, mainly felt thru the floorboards of the fender pan.  checked the motor and it seemed tight and the motor mounts felt like they were working correctly.  Also hydro fluid is at correct level.

 

Had to finish up, and noticed that vibration was not as bad when tractor was not moving or when i was not raising/lowering the front blade.

 

My fear is that the drive shaft is going/gone bad, but dont understand why it started so suddenly.

 

BTW,  last week when i had the tractor out last, it did throw the pto belt off for the deck, dont think this is related but wanted to mention it just in case.

 

thanks for any ideas/suggestions!!

 

JD214


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#2 olcowhand ONLINE  

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Posted August 17, 2013 - 02:42 PM

Sounds like a U-joint in the drive shaft going out to me!  May be a failed bearing in the joint, or may have thrown a bearing cap completely out.  


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#3 JohnDeere214 OFFLINE  

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Posted August 17, 2013 - 06:58 PM

thx oldcowhand,  that was the only thing i could think of........just wanted others opinions before tearing everything down.  Its going to be a couple weeks at least until i can get to it, hope it didnt damage anything else.

 

thx again

JD214



#4 olcowhand ONLINE  

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Posted August 17, 2013 - 07:00 PM

Long as she's still spinning the shaft, you'll be ok.  Likely won't fly apart even if you use it more......but don't!    


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#5 JDBrian OFFLINE  

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Posted August 17, 2013 - 07:15 PM

  If you have an original shaft it doesn't have grease fittings. The replacement part has them. You can get some idea what is going on by getting under the tractor grabbing the shaft and turning it to check for slack. Do this with the tractor off and the key in your pocket.  It could be the coupler/key on the engine that is worn as well.  Check both ends and you should be able to find where the problem is. Motor mounts are another problem area on these tractors. Give them a really close look. Sometimes they crack and you can't see it from the top. Oil will also soften them with time until they no longer isolate the way they should. I've also seen the rivets come loose or the steel plate part of the mount break where they are attached to the frame. 


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#6 JohnDeere214 OFFLINE  

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Posted January 21, 2015 - 08:37 AM

Sorry for bringing up this thread but wanted to give an update.  Pulled the fender pan off last spring/summer(waited that long cause i was dreading what i might find!!!)  and found the roll pin that attaches the drive shaft to the input shaft had broken.  replace roll pin and was good to go.

 

thanks for the ideas/advice earlier!!

 

JD214


Edited by JohnDeere214, January 21, 2015 - 08:38 AM.

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#7 KennyP ONLINE  

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Posted January 21, 2015 - 08:56 AM

Glad it was a simple fix for you!



#8 olcowhand ONLINE  

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Posted January 21, 2015 - 08:57 AM

Sorry for bringing up this thread but wanted to give an update.  Pulled the fender pan off last spring/summer(waited that long cause i was dreading what i might find!!!)  and found the roll pin that attaches the drive shaft to the input shaft had broken.  replace roll pin and was good to go.

 

thanks for the ideas/advice earlier!!

 

JD214

 

Apology?  We want updates, no matter how long from the original post.  Thanks, and glad it was a cheap & easy enough fix.



#9 skifoof OFFLINE  

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Posted February 01, 2015 - 08:06 AM

im on my third driveshaft on my 317,close to needing a forth,they don't last long,i think I have 1,300 original hours on mine and it s very nice shape,only thing mine has done is mow and pull a sweeper,even when u get the greaseable ones ,like I do its a real pain in the axx,to get to the zerks

#10 Trav1s ONLINE  

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Posted February 01, 2015 - 11:01 AM

im on my third driveshaft on my 317,close to needing a forth,they don't last long,i think I have 1,300 original hours on mine and it s very nice shape,only thing mine has done is mow and pull a sweeper,even when u get the greaseable ones ,like I do its a real pain in the axx,to get to the zerks

 

Check motor mounts - when they go bad they wipe out the shaft.


Edited by Trav1s, February 01, 2015 - 02:56 PM.

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