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2940 Hi-Low

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Mike

11-22-2002 07:20:13




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I have split my 2940 to investigate a hydraulic problem and have found that the hi-side clutches a worn out. Also the two piston rings that fit on the hud that goes into the main hi-low housing are broken and have scored up the bore of the housing. I want to have the local machine shop open the bore of the housing to remove the score marks. Does anyone know how big I can go and still use the same piston rings? I really don't want to buy a new housing! Thanks.

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G-MAN

11-22-2002 10:33:08




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 Re: 2940 Hi-Low in reply to Mike, 11-22-2002 07:20:13  
I found a spec for the diameter of the bore in the brake housing for the bushing. It's listed as 3.464 to 3.465. I don't know for sure if the sealing ring bore is supposed to be the same dimension of not, but there's not much leeway there if it is. You're probably going to have to go until the scoring marks are completely gone, or you will defitely the risk ruining the sealing rings again. However, if that makes the bore too large, you're going to get into a situation where you may have insufficient compression of the sealing rings and poor sealing or ring breakage. In my opinion, you'd be much better off in the long run to buy the new or a good used housing and go back together that way. If you have other components that are also worn (like the disks), your best bet might be to buy a complete rebuilt two-speed unit (a new one from Deere is $2100). At least that way you'll probably have some sort of warrantly. We frequently install new clutch packs and the like in powershift tractors, as it is safer and more economical in terms of labor than piecing together the old one, as all the old components have the same amount of hours, and it may only be a matter of time before a component that "looks good" decides to fail, and then you're right back at square one.

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