Big Dean: MF-35 PTO Shaft Needle Bearing

I am rebuilding the hydraulic pump on my MF-35 Deluxe. After removing the pump I noticed a needle roller bearing in the sump where the pump normally sits. I believe this bearing is the PTO main drive shaft support bearing. I do not know whether it fell off of the pump shaft into the sump when I removed the pump or whether it was already there underneath the pump from some previous repair. There is plenty of evidence of shade tree work on this tractor.

I have attempted to push it onto the PTO drive shaft and into the collar where it seems to go but finger pressure will not put it into position even if I move the PTO drive shaft up and down and side to side. I have also looked at the drawings in the I&T book and cannot determine what holds this bearing in place.

What holds this bearing in place and what must be done to get it back into position? Should I tap on the cage with a small punch?

Thanks, in advance for your advice.

Dean (aka Little Dean)

The lift on this tractor worked remarkably well considering all of the things that were wrong with it: Wrong oil, scored cylinder and damaged piston rings, scored pump pistons and chambers, missing piston ring on one pump piston, PTO drive shaft neeedle bearing left in bottom of sump by last mechanic, lift controls misadjusted, etc.

Oh, buy the way, while cleaning/flushing the sump I found 8-10 rollers and parts of the broken cage of a differential carrier bearing in the bottom of the differential housing beneath the muck. Apparenetly someone had repaired it long ago but did not bother to remove all of the damaged bearing.

Now when my pump parts arrive, I can reassemble the pump, reinstall the lift cover, finalize the lift cover adjustments and this one should be nearly as good as new.

Thanks to all who offered advice.

Dean

It may be what you're lloking for...

Roller bearing inside pump input shaft

HTH

ForDillac

The bearing that I am speaking is on the front side of the pump and fits around the shaft that drives the pump and PTO. I can see where it should go but it will not (easily) go back into position. I plan to try to tap it back into the collar with the pump drive coupling that fits onto the shaft.

Dean

I'm pretty sure that this bearing goes onto the front PTO main drive shaft in front of the pump. My pump has bronze bushings in the pump housings. I'm just not sure what holds the bearing in place and how much force should be necessary in order to get it back into position.

I will try to contact you via email through your website.

Thanks, again.

Dean