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Mower belt gets loose when PTO engages drive belt

john deere 175 mower deck belt slippage

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#1 Hrguy OFFLINE  

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Posted September 13, 2016 - 08:21 PM

My mower deck belt is tight as Dick's hatband until I engage the PTO.  Then the main pulley is pulled toward the front of tractor just enough for my mower belt to slack and blades turn slowly.  How can I stabilize the double pulley?  This is a 38" deck (two blades) on John Deere 175. (the original 175)

 

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#2 secondtry ONLINE  

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Posted September 13, 2016 - 08:37 PM

 Maybe pictures would help. I for one have no idea which is the main pulley. I have no idea how a pulley could move in any direction without other things going with it. Is the pulley on the deck. If so is the deck moving with it. More information is needed. Often the search for more information finds the problem. Don



#3 chieffan ONLINE  

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Posted September 13, 2016 - 08:45 PM

Sounds like worn lift linkage allowing the whole deck to move around.


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#4 larrybl OFFLINE  

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Posted September 13, 2016 - 09:58 PM

Then the main pulley is pulled toward the front of tractor.

I would check the mounts on the main pulley..


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#5 Hrguy OFFLINE  

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Posted September 20, 2016 - 01:03 PM

Chieffan, you may be right because the deck does move a little forward.  Now to figure out how to adjust lift linkage...

 






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