As stated in an earlier post I am rebuilding the 48" mower deck on my 97 345. I recieved a lot of helpful information from the forum members in response to that post and I greatly appreciate it. My next question is in regard to the double pulley jack sheave. While inspecting the deck I noticed the bearings in the jack sheave are rough and make a bit of rumble sound when rotated. My local john deere dealer wants more that $300 for a new jack sheave. I was wondering if the bearings can be replaced on the jack sheave and if so has anyone on this forum done this. If so I would appreciate any guidance, tips etcetera you can provide me. I thought about taking the jack sheave to a local small engine repair shop and having them replace the bearings if that's possible. Thanks in advance.
gr8t73
Here's what I found for your deck:
![Image]()
So yes, bearings can be removed! Remove bolt 17 And try to support pulley on something with a hole slightly larger than the bearing bore ( a large socket may work!). Resting on pulley flanges could damage pulley when driving bearings (2) out. Stick a punch into top bearing and push spacer (#20) to one side. This will allow you to tap bearing out. Turn pulley over, support, and tap 2nd bearing out. When reassembling, install a bearing, the spacer and slip bolt through to center spacer. I would then pack space between spacer and bore with grease, about 75%-90% full. This will displace air and prevent corrosion from moisture in air. Install 2nd bearing, bolt in place and done! Bob
So yes, bearings can be removed! Remove bolt 17 And try to support pulley on something with a hole slightly larger than the bearing bore ( a large socket may work!). Resting on pulley flanges could damage pulley when driving bearings (2) out. Stick a punch into top bearing and push spacer (#20) to one side. This will allow you to tap bearing out. Turn pulley over, support, and tap 2nd bearing out. When reassembling, install a bearing, the spacer and slip bolt through to center spacer. I would then pack space between spacer and bore with grease, about 75%-90% full. This will displace air and prevent corrosion from moisture in air. Install 2nd bearing, bolt in place and done! Bob
It's a pretty easy job. I did it on my old deck - I had to buy a socket to fit the bolt and nut as I believe it's 1 1/4" with a pretty high torque spec. If I recall, the numbers on the bearings and visible so you can order from a third part very easily.
You could very easily take the assembly to the machine shop of your choice and have the bearings replaced.
Good luck
You could very easily take the assembly to the machine shop of your choice and have the bearings replaced.
Good luck
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
