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JD B Transmission

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JDJACK

07-02-2002 19:52:52




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I am installing the 4th and 6th speed drive gear. How tight do I tighten that nut? And is there any adjustment on the sliding gear shaft? I can't find any spec in manual. Is there suppost to be any endplay in that shaft?




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JD JACK

07-03-2002 04:56:41




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 Re: JD B Transmission in reply to JDJACK, 07-02-2002 19:52:52  
What LH bearing? The one that goes on the transmission drive gear and shaft on the right side of case? Or the bearing behind the 4th and 6th speed gear? That bearing had to be driven in so I know thatone is noy loose. But the ohter one went in loose if I remember correctly. What do you do to the case to make bearing fit tight? Alos should the sliding gear shaft bearing fit tight on the sliding gear shaft, or stay in the trans drive gear and shaft? There shouldn't be any endplay here right? I did put all new bearings in.

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Clooney

07-03-2002 06:13:10




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 Re: Re: JD B Transmission in reply to JD JACK, 07-03-2002 04:56:41  
Jack, the L/H bearing I'm talking about is on the L/H side right behind the 4/6 gear [held in with a snap ring on each side of it]. That bearing is what controls the sliding gear shaft end play.
~The bearing that goes between the sliding gear shaft & drive gear should be a light press fit on both ends but they never are on a used trans. As long as there isn't much radial movement on the sliding gear shaft at the drive gear you will be good to go.
~How I repair the trans case depends on how much & what type of wear I'm dealing with. If excess wear or the case is worn egg shaped I weld up & re-grind. If just a little loose from the bearing spinning in the case I use a sharp small punch & punch small dots all around the bore & use LocTite bearing mounting compound on the bearing when installing.

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Clooney

07-03-2002 03:39:27




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 Re: JD B Transmission in reply to JDJACK, 07-02-2002 19:52:52  
Jack, all that nut does is hold the 4/6 gear tight to the bearing. I haven't seen a torque spec for that nut [it's a castle nut so it would have to be moved to line the key hole up after tightening anyway].
~I usually tighten it up pretty good [to make sure the gear is seated good & tight against the bearing] then turn the nut in the tighten direction to get the pin in, [never back a castle nut up to line the holes up, unless you are working with tapered bearings].
~The end play for the sliding gear shaft is controlled by the L/H bearing [if the end play is excessive you have a worn L/H bearing or the trans case & snap rings are worn from the bearing spinning in the case [common on a high hour trans].
~If the end play is excessive it will cause the underdrive to pop out of the trans drive gear under load. I don't know what the spec is on end play for that shaft [I've never seen it listed], but a little is normal with a used bearing]. I almost always install a new bearing if I go in that far & in a lot of cases have to repair the trans case due to the fact that the bearing was spinning in the case.

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