So I took the gearbox apart and I see all the parts I need--gears, bearings, seals, snap rings--but the outer bearing race of the bearing is stuck in the back of the gearbox housing. The bearing was trashed and the inner race and the balls and other components of the bearing came out but the outer race is in the housing. It appears it was pressed in and normally would come out with the shaft it was pressed on but because it came apart it does't come out the intended way. And the housing doesn't have a plug like some of the other gear boxes do. This gearbox only has one big round plug that you gently pry off with screwdriver and hammer whereas other gearboxes have two of those type of plugs which would allow access to knock the bearing race out from the outside of the housing. If anyone understands how I've tried to explain this and if you have any tips for how to remove that stuck race, I would greatly appreciate it! I really can't afford to replace the entire gearbox housing along with the other parts I do have to replace as well as the $120 belt!!! I thought maybe if I drilled 2 holes from outside the housing across the diameter of the outer bearing race to give access to a small diameter drift so I could hammer the race out might work but then I would have to either pay someone to weld the aluminum housing where the holes would be drilled to make it oil-tight again or use high temp silicone and hope it adheres and seals. I am open to suggestions and hope someone knows the right better way to fix this! Kubota wants something like $1,400 for a new gearbox or at least $800 to rebuild!!! I already have it apart except for getting that bearing race out. HELP! Thanks ahead of time.
RCK60-29B belly mower deck with blown gearbox
- Thread starter TerryMcQ
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RickB
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- Up the road from Dollar General WNC
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- Just a Scag
Weld a bead around the inside of the race. It will cool, contract and just about fall out.
Hi Peter, the race is flush against the back of the recess it sits in. No room to get anything in between the back/bottom of race and the housing. I was hoping maybe someone knows of a tool I could buy or rent that expands its diameter to grab the inner diameter/surface of the race and then had some sort of puller attachments which would somehow pull it out of the housing. Any sort of puller if it levered/braced itself against the back of the gearbox housing might punch a hole through the aluminum (I think that was a mistake making that housing aluminum!!!) so either it has to push agains a large diameter of the surface of the gearbox housing from inside the diameter of the race or somehow it has to brace itself from OUTSIDE the diameter of the race against the gearbox housing. I can't picture how this might look exactly because I don't know if it exists! I hope you know of some tool you could steer me towards to get this done. I also don't know where I'm going to find the gears, bearings, seals, snap rings, and I forgot to mention in original post that the reason this destroyed itself is the bolts holding the gearbox to the brackets on the deck, 2 bolts were completely out of the gearbox and bracket and laying on the deck with some threads flattened from damage done over time while they were slowly backing themselves out (those bolts have to be replaced) and the 2 bolts through the aluminum bracket (why would they put an aluminum bracket on one side and iron on the other?!) those 2 bolts were loose and a piece of the aluminum bracket broke off across one of the bolt holes so the bracket has to be replaced too!.
Rick, I'm not a welder and don't have any welding equipment. I do have a small propane torch. Might that heat things up enough to try to finagle that race out of its hole? Is it safe to apply heat to aluminum or do you have to be careful not to heat it too much? I never messed with heating anything aluminum to get something stuck in it to loosen up.
Peter 315
Super Member
They have this set...........https://www.amazon.com/Bearing-Puller-Internal-Extractor-Remove/dp/B017XDLDDY
Correction to my own post: I was mistaken about the housing being aluminum. It is steel. I made the mistake because when tapping on housing with brass hammer to try to wiggle broken bearing parts and shaft loose, the housing sounded aluminum. Oh well, I'm getting old.
