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orangebgood

3112 bevel gearbox

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orangebgood
I picked up a 3112V with a damaged shaft and pulleys on the bevel gearbox. Can someone tell me, is it possible to replace the shaft. Wondering if it could be done without pulling the gearbox out. Thanks for any info.

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RayS
It can be done by removing the steel plate that is on the right side of the tractor that connects the BGB to the transmission, but if it were me since I hade it that far apart I would remove it the rest of the way. It is alot easier to to the work on a bench.

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PhanDad
I agree with Ray - it's much easier to work on the box on the bench. The box connects the front tractor frame to the rear - just use small horses or large jack stands to support the tractor halves when taking the box out. The shaft can still be purchased from Simplicity; but someone on this site may be able to sell you a servicable used one. Try an ad in the classifieds. I'd definitely replace the seals when you have it apart and the front (input shaft) bearing - that's the most troublesome bearing in the box. I'd also replace the cross shaft bearings, but that would depend on your budget and the condition of the bearings. Good luck with your repair.

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BrianP
The others have hit the nail on the head. It's much much easier to work on the BGB (bevel gear box), sitting on a workbench than hanging from a partially disassembled tractor. I used two shop stands to support the front half of the tractor and a cement block and wood scraps to support the back half. Took it to my workbench and had at it. I took it one step at a time and rebuilding it was straightforward. While I had mine apart I replaced all the seals and all the bearings. For me I felt it was necessary since the gears inside were a bit chewed up and metal shavings got into everything. In my case, I bit the bullet and bought new gears also. You may not want (or need) to go that far (or have the budget for it), but the seals are cheap enough insurance against puddles of gear oil on the floor. Parts are still available through Simplicity dealers, the classifieds on this site or eBay...your choice.

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