H belt pulley leak

I have put up with a leaky belt pulley for a long time. Friday I was already a mess from another job so I thought I might as well dig into the pulley. It came out very easy. I assume there is an oil seal somewhere between the outer bearing and the red hub. But I didn't want to start beating on the ice cold cast metal to separated it. What is the best way to proceed from here. I noticed the gear on the end has two nuts with a wire going through them and twisted together I'm guessing so they wouldn't back off and fall down in the belly somewhere.
cvphoto9630.jpg


cvphoto9631.jpg
 
Hi Paul! The seal lives inside the pulley shaft bearing cage - the flange that bolts to the pulley gearbox. You need to remove the pulley shaft bevel gear, the inner bearing, a spacer sleeve and the outer bearing to get to the seal.

Incidentally it looks like it's time to change the rear end oil. Yours is contaminated with water, thus the milky appearance.
 
LOl, you are so right Bob. I was amazed how bad the oil was. I changed it maybe 5 years ago when I did the PTO shaft seal. And it has never set outside since. It must be condensation. I have been in the barn after a long cold spell and we get a day that turns off very warm and my tractors will be covered in sweat. It gets worked hard mowing about every 10 days also so I would have thought it would have got hot enough to get rid of it. But yes it has new oil coming also. Thanks for the reply.Will the bearing pull off by hand after the gear is removed or will it require a puller or something. Also should I use the wire through the nut when putting it back together?
 
Hey Paul - it's been a long time since I messed with the belt pulley seal. However I don't recall any difficulty, needing a puller, etc. to remove the 2 bearings.

I see the same thing (condensation getting into the rear end oil) on my 3 tractors. They'll "sweat" like crazy on a warm morning after a cold night, same as yours. And they are always shedded when not being used. So it's not rain getting into the rear ends.
 
Forgot to mention: Wind a new lock wire thru the bevel gear nut after reassembly. You don't want that nut coming off and letting the gear drop into the transmission!!
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top