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Allis Chalmers Discussion Forum

WD-45 axle removal from bull gear

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06-16-2009 21:28:22

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I've got my WD-45 broke down into sub-assemblies and getting ready to replace all the seals and gaskets. I've tried to get the sheet metal caps off the inside of the final drives with no luck and I'm afraid I'm going to destroy them getting them off. The two questions I have are can you still get new caps, in case I destroy them, and, do the axles usually slide out of the bull gears easily or are they a press fit? If they are a press fit or froze in place, I'm worried about cracking the casting if I use a press to get them out. I'm sure someone on here has done this before so I thought I'd get some input first. Thanks for the help.

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06-19-2009 12:17:45

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 Re: WD-45 axle removal from bull gear in reply to S.C., 06-16-2009 21:28:22  
its not a press fit on the gear, but you have to deal with the bearings. The last one I took apart required a block of wood and a sledge hammer.

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06-17-2009 10:09:22

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 Re: WD-45 axle removal from bull gear in reply to S.C., 06-16-2009 21:28:22  
To get the cap off, you need a large diameter chisel with a blunt point, so it contacts the cap and the casting at the same time. Something like 3/4 inch dia, ground to a 45 degree angle.

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Jerry Coulter

06-17-2009 05:17:07

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 Re: WD-45 axle removal from bull gear in reply to S.C., 06-16-2009 21:28:22  
It is a press fit secured by a washer and capscrew behind that cap. Dad once delivered a new WD45 to a farmer, the capscrew was left off at the factory. The rear wheel came off in the field.

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06-19-2009 08:47:26

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 Re: WD-45 axle removal from bull gear in reply to Jerry Coulter, 06-17-2009 05:17:07  
I would disagree about a press fit. It is a splined gear on a splined shaft, and along with the washer and bolt, there is a snap ring on the inside side of the bull gear. Snap ring is "fun" to get out, lying underneath the tractor, unless one has a good snap ring plier.

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