Re: Belt tension

Posted by Farmer Bob on January 10, 2000 at 19:38:34 from (207.227.187.164):

In Reply to: Belt tension posted by Jason Will on January 09, 2000 at 21:29:11:

Jason, Look at the top pulley where the fan belt is straight above the crankshaft pulley and what the fan belt goes around. You should see somewhere on the front of the top pulley a locking screw with a slot in it and a locking nut screwed down to the pulley. Loosen the lock nut and unscrew the slotted screw. This will free up the front flange of the adjustable pulley for adjustment but you might have to use some penetrant like WD40 or Kroil on the threads to get it to turn. You should see raised humps on the front of the pulley near the hub. These are for placing a long punch (or what I use is a piece of 1/2" copper grounding rod) and a brass hammer. To tighten the belt you want to move the outer flange in (clockwise if you standing in front of the tractor)towards the inner flange. Line up your punch on one of the raised humps near the left side bottom of the outer flange and hammer it away from you (moving the flange clockwise). When that hump no longer works find the next one and repeat until you have about 1" of slack or inner movement measured in the middle of one side of the belt. Now, look for the hole that the locking screw and lock nut came out of. You should adjust the outer flange so that this hole lines up with an indented flat area on the hub. Once it is lined up over the flat area re-install the locking screw and nut. Turn the screw as far as you can with a large screw driver then tighten down the lock nut.

You may have to work alternately from both sides of the tractor...just remember to keep that outer flange moving clockwise or "in" towards the inner flange. While your doing all this, look at the belt for cracks or frayed edges. If it is well worn from being run loose you may want to replace it. If it looks like its running in the bottom of the pulley groove with the proper tension you should replace it anyway. I recommend you wear gloves for doing this job as those fans blades can be sharp. Remember, righty-tighty, lefty loosey! Good luck, //FB

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