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JD-B TRANS NOISE

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Dan

03-21-2000 22:34:43




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I have a 47 JD b the trans makes a ginding noise when i use gears 1,2,4 and rev.but when I use 3,5,6 the grind is absent, I opened the top of trans but did not find the problem.please point me in the right direction




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Pappy

03-22-2000 22:52:50




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 Re: JD-B TRANS NOISE in reply to Dan, 03-21-2000 22:34:43  
Buckeye Al has it analyzed properly, I believe. I just went completely through my transmission to replace some gears that were broken by a loose brake locating dowel.



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buckeye al

03-22-2000 13:31:10




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 Re: JD-B TRANS NOISE in reply to Dan, 03-21-2000 22:34:43  
Sounds to me like the pilot bearing is bad on the sliding gear shaft. In low range the pilot is working, in High (3, 5 & 6) it is not. The shaft that the primary reduction gear is attached to is just a little short shaft. The sliding gear shaft is piloted into the left end of this short input shaft. In low range these shafts turn at different speeds rolling on the pilot bearing. In high, the range slider locks them together so a bad bearing will be silent. If that's what it is, it won't take a complete dismantling of the transmission but you will have a lot of work to do from the top and the right side.

While in there at the very least, I'd make sure the countershaft's bearings are good and properly adjusted.

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Chuck

03-22-2000 03:54:45




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 Re: JD-B TRANS NOISE in reply to Dan, 03-21-2000 22:34:43  
wish it were that simple. If you're going to keep the tractor, the best thing is to tear the trasmission down and see what the problem is, could be lots of things and or combinations.



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