loose belt pulley on troy bilt riding mower

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  #1  
Old 05-13-10, 03:11 PM
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loose belt pulley on troy bilt riding mower

hi all,

my son just threw a deck/blade belt on his troy bilt riding mower (17.5 hp, 42-inch). he got the belt back on but the main pulley on the left side of deck (if sitting on mower) is very loose and moves up and down and slightly sideways on the spindle. even when the blades are engaged, though it tightens up and moves the pulley to the top of the spindle, it's still loose and can be forced downward or slightly tilted to the sides with your hand. is this supposed to be this way? is there another part missing? when he starts the mower and engages the blade, it slightly smokes and the pulley shakes. i checked and the belt appears to be installed in all of the pulleys correctly. any help would be appreciated. mike
 
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  #2  
Old 05-13-10, 04:03 PM
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That is NOT the way it should be. Sounds like you need a new spindle. Please post the model number of the tractor. Can be found under the seat. should start with 13
 
  #3  
Old 05-13-10, 04:13 PM
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the model number under the seat is 13AN77TG766

is the spindle easy to get off? it looks to be held on by a large bolt that is on the top and travels downward?

thanks!
 

Last edited by 75vette; 05-13-10 at 04:30 PM.
  #4  
Old 05-13-10, 05:08 PM
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Yes, it is easy to get off. The large bolt on top just holds the pulley on. There are 3 bolts under the deck that hold the spindle on. here is a parts breakdown. Used to be able to replace just the bearings.

Parts and Diagrams for Troy-Bilt 13AN77TG766 Pony (2006)
 
  #5  
Old 05-13-10, 05:25 PM
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thanks, indypower1...much appreciated!!
 
  #6  
Old 05-13-10, 10:40 PM
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Sounds like the mandrel bearings went bad to me.
 
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