Re: 345 PTO bearing noise help FIXED!!!
Since we haven't had any snow and are not expecting any I decided to fix my noisy PTO.
I removed the PTO and diagnosed that the bottom bearing was bad. I replaced the bottom bearing and the noise is completely gone. The bottom bearing only spins when the PTO is disengaged. The top bearing spins all the time. So if there is noise with the PTO engaged or disengaged the top bearing is bad. If the noise goes away when the PTO is engaged, the bottom bearing it bad.
The good news: the bottom bearing is very easy to replace. The bad news: the top bearing doesn't look as easy to replace, though I did try to replace it since mine was not bad.
I fixed this on 2 different tractors. A 2000 325 and a 2001 345. Other models and years may differ in design so this procedure may not be applicable to your model or year. I got the bearings for under $15 each at my local bearing shop. I took a few pictures along the way so others may benefit and not need to buy a $170 PTO because a $15 bearing needs to be replaced. The bottom bearing takes much more side load than the upper bearing which is closer to the crank; therefor is more likely to fail.
DIY takes all of 15-20 minutes if you have all the right tools.
Un-Plug the electrical connecter from the PTO to the fame rail.
Remove the bolt holding the PTO onto the crank. (I used a air impact gun)
Remove the PTO form the crank.
Bottom of PTO with C-clip holding bearing in
Take the C-clip off.
Hammer out the bearing using 1/2"extention w/3/8" adpater
Hammer spacer out of the bearing
Press the spacer in the new bearing with a socket and vice.
Hammer the spacer and bearing into the PTO pulley using a socket and extension.
Put the C-Cip on
Check the air gap on the PTO for .012-.018 and adjust if needed.
Put some anti-seize on the crank shaft so the PTO will come off next time.
Put some blue locktite on the PTO bolt
Bolt the PTO back onto the crank shaft.
Plug the electrical connect back up.
Enjoy your quiet PTO...