Belt Question - Page 2

Psevins · #11 05-25-2010, 03:56 PM

3/8's belt that is 81" long. I found a belt listing online...sure is echo'ey in here

Psevins · #12 05-25-2010, 03:59 PM

didn't see your reply! 3 blades, 42" cut solid deck (If memory serves two outer blades sit slightly forward of the main)

the P/N I came up with was IH-473462-R4
(3/8 x 81) The setup had a 1/2 x 80 on it when I got it.

Psevins · #13 05-29-2010, 05:30 PM

So I still can't keep the belt on. New belt of proper size, everything is adjusted where it should be. Pulleys are all in good shape with no bends, and free turning. there is no reason it should keep throwing the belt.

this is the only reason I bought this specific one a few weeks ago because it had the mower deck with it. Really regretting this purchase at the moment.

if I can't get it this weekend then I'm just going to have to sell it.

Psevins · #14 05-29-2010, 06:00 PM

more playing around with it has created some interesting results. if I keep the deck no lower than one notch from raised, the belt stays on. Lower it any more and there she goes.

Does anyone know how I should adjust the front deck hanger bolts? They are pretty much ran all the way in (ie raised) now. The line of belt sight is straight and clear.

The only thing that could be replaced would be one of the pulleys on the mule drive, its not as smooth spinning as its counterpart but by no means bad.

I'D really rather not push mow my yard again this week!

Thanks!

truckntran · #15 05-29-2010, 06:26 PM

http://www.onlycubcadets.net/forum/showthread.php?t=5

Go to the technical library forum, implements, and take a look at the belt post I linked above...also the manual for your deck.

If there is no mule tensioning spring, I don't understand how you are getting proper tension on the belt....I am assuming you have the mule drive with one spring tensioned pulley and one with the bolt type adjuster. The diagram above shows a double bolt style adjuster but the end result of adjusting should be the same..

Your deck belt tensioner should pivot freely... is the deck belt coming off as well or just the PTO belt?

Amigatec · #16 05-29-2010, 07:25 PM

I had that problemand I adjusted the front of the deck all the way up and it has stopped throwing belts. Normally once a belt throws it WILL do it again, it damages the belt and it is time to replace it.

Amigatec · #17 05-29-2010, 07:26 PM

Something else to check it weither the belt is wearing more on the top or the bottom, if it is the top the front of the deck is to low. I found out on mine that way.

Psevins · #18 05-29-2010, 11:59 PM

Quote:

Originally Posted by truckntran

http://www.onlycubcadets.net/forum/showthread.php?t=5

If there is no mule tensioning spring, I don't understand how you are getting proper tension on the belt....I am assuming you have the mule drive with one spring tensioned pulley and one with the bolt type adjuster. The diagram above shows a double bolt style adjuster but the end result of adjusting should be the same..

Your deck belt tensioner should pivot freely... is the deck belt coming off as well or just the PTO belt?

On my mule drive the only adjustment I can make is in the 5/16 bolt that has a 90 degree bend in it to come out the front of the tractor, thats where the nut pulls the mule drive forward. There's no spring on it, and from what I have seen there shouldnt be on the older ones. that parts seems to be functioning correctly.

The belt only comes off the main pulley on the deck from the PTO. The deck tensioner spins freely but the arm doesn't flex any.

However, I did finally get somewhere on the deck. I replaced the front deck hanger bolts last week (when I still had the wrong belt on) I mentioned earlier that I had them all the way up, which was true but not quite right. I was able to inch it up another 1/4 inch. Once I did that no belt slips! I managed to mow quite a bit!

Thanks to everyone for your help plus it can be very helpful to document processes and look back on your own progress for further inspiration!

Psevins · #19 06-03-2010, 08:39 PM

so yet again I'm back to the belt! Got half my yard mowed and the belt just broke on me! looked like it had been rubbing against something but I've not found anything yet. my next (and final) step will be to replace both mule drive pulleys since one was stiffer than the other. Perhaps under highspeed/tension this variable is causing more problems.

Psevins · #20 06-07-2010, 10:58 PM

so I replaced the pulleys and belt tonight (too late to test run). Noted 2 things.

1) the old pulleys had an odd rust build up in them...not noticeable when installed but it looks like perhaps a belt had been left on too long (years) and caused a build up. The spot was only 3 inches in length (same as the amount of belt contact would be)

2) The tensioner bolt (90 degree bolt thing) was replace a few weeks ago after the old one was showing thread stripping. My reproduction wasn't spot on I guess, allowing the belt to rub against it every so slightly.

So after replacing the pulleys and bending the bolt just enough I've reasonable clearance (about 1/4 inch) and everything looks good!

If this doesn't work though I'm going to get creative. Might be interesting to install a single DC motor to the center pulley and bypass the PTO all together. Of course this requires just the right motor (as to prevent an explosion), extra battery, etc, etc.

Lets all hope this works!:biggrin2.gif: