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3310H Bevel Gear Box

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I have a 1971 3310H that has a lot of play in the front drive shaft of the BGB, In order to pull this gear box do U have to split the tractor, and what other model tractors have the same gear box?


re; FYI- I found this on My Tractor Forum, I'm assuming this is gonna be the same procedure. Darn it!!!

the only way to have enough access to the internals of the BGB is to remove it from the tractor. The BGB actually is the "connecting piece" or "keystone" between the rear frame which supports the transaxle case and the front tractor frame. The front frame bolts to one side of the BGB, and the rear frame bolts to the back of the BGB.

You will need to make sure that both the front half and the back half of the tractor frame is supported when you begin to unbolt the frame from the BGB. Access to the front frame bolts that bolt the frame to the BGB is underneath the tractor near the center. Just follow the drive shaft from the engine to the BGB and you will see 4 of them. You will need to remove the belly screen if you have one, and also the drive shaft to get access to these bolts. 

Once you have those four bolts removed, the front frame will separate from the back. This is where you need those good frame supports. The tractor will actually start "sagging" in the middle as you make progress removing the bolts. Try to keep both tractor halves as level as possible to prevent binding and striping of the bolts. These parts are heavy, so having some help around is a good idea because you will probably be on your back under the tractor when they separate. After the separation, you then will have easy access to remove the BGB from the rear transaxle frame. Obviously you will need to make sure that you have all the appropriate shuttle linkages, brake linkage, belts, cables etc. properly disconnected before you separate the two frames. 

It is a big project, especially the first time, but it is doable if you are fairly familiar with mechanical repairs

Edited by docs

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I have found another BGB local form a fellow simplicity enthusiast, I am going to purchase this instead of rebuilding mine. Just a note to anyone using the or buying vintage Simplicity or Allis Chalmer Garden tractors, Reach under the tractor and try move the shaft up and down and make sure there is no play in that shaft that connects to the Bevel Gear Box. You might save yourself a lot of trouble if your looking for a trouble free tractor. I got a good deal on this 1 and hopefully this is the only problem it gives me for a long while.

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