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Farmall & IHC Tractors Discussion Forum
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Re: Differential tooth pattern-not sure what to do

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Zachary Hoyt

01-29-2013 09:02:46
50.122.169.86



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Thank you. I do not know what coast means in a gear set, and I do not have a dial indicator so I have to guess about the back lash. The best that I can currently tell from what I have done is that the lower half of the tooth on the pinion is driving the upper half of the tooth on the ring gear. This would seem to me that it could indicate that I should take out a shim and put the pinion further into the rear end case. I am also wondering if moving it further in there would be likely to make it whine or be too tight. I have only done this sort of thing once before and that time I put a used SH pinion with its shims on a used H ring gear and it seemed to work fine, although I did not check anything other than visually and by feel and did not check the mesh. I am not sure whether to just put this together the way it is and see if it works or try to adjust things and maybe get myself into a worse mess.
Zach

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CharlieNJ

01-29-2013 14:50:46
76.117.68.151



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 Re: Differential tooth pattern-not sure what to do in reply to Zachary Hoyt, 01-29-2013 09:02:46  
Zack, There are two patterns, the "coast" and "drive" pattern. The drive pattern is the pattern on the one side of the gears when the tractor is accelerating. The coast pattern is the pattern on the other side of the gears when the tractor is decelerating, or engine braking.
Best Regards,
Charlie



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Zachary Hoyt

01-29-2013 15:14:46
50.122.169.86



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 Re: Differential tooth pattern-not sure what to do in reply to CharlieNJ, 01-29-2013 14:50:46  
Thanks, that makes sense. I always like to learn new terms.
Zach



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The tractor vet

01-29-2013 09:53:29
75.19.126.114



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 Re: Differential tooth pattern-not sure what to do in reply to Zachary Hoyt, 01-29-2013 09:02:46  
Things ya need as far as tools ya need , (1) dial indicator with a magnetic base -, (2) a set of Mic.'s 0-3 inches to start with (3) a set of depth mic.'s . And all can be had vfor not a ton of money as you do not need Starrets . And (4) a dial caliper . And since you are not sure what your doing then see if you can find someone to come over and help. If you were close i would do that.



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Zachary Hoyt

01-29-2013 15:45:53
50.122.169.86



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 Re: Differential tooth pattern-not sure what to do in reply to The tractor vet, 01-29-2013 09:53:29  
You are right, I do need to get those things some day soon. I do have a dial caliper but none of the others.
Zach



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