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| Gearbox help, pics please. https://www.ausmini.com/forums/viewtopic.php?f=2&t=56814 |
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| Author: | Tombo [ Mon Sep 07, 2009 5:30 pm ] |
| Post subject: | Gearbox help, pics please. |
I'm about to put a rod change box together, ony i can't find my manuals (still in boxes somewhere  )
What i'm after is the top picture of the box so i put the selectors back on the cluster the right way. Also what is the diff side housing shim process, really i need the formula for the clearance minus gasket thickness to set the preload. Thanks, Tom |
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| Author: | drmini in aust [ Mon Sep 07, 2009 7:24 pm ] |
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Sorry I don't have a pic of the selectors, but they are not hard to figure out. Later style diff `angular contact' bearings (with `thrust' marked on one side) have .005" preload when new. The thrust marked faces go to outside. Early style `deep groove' diff bearings only got .001-.002" preload. I assemble the RH side cover and tighten the 5 bolts. Then, I sit the box on its RH side. This stops the shims behind the LH cover falling about and getting trapped out of position before the cover is tightened.. |
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| Author: | simon k [ Mon Sep 07, 2009 10:00 pm ] |
| Post subject: | |
drmini in aust wrote: Sorry I don't have a pic of the selectors, but they are not hard to figure out.
Later style diff `angular contact' bearings (with `thrust' marked on one side) have .005" preload when new. The thrust marked faces go to outside. Early style `deep groove' diff bearings only got .001-.002" preload. the current ones aren't marked with 'thrust' sides are they? the gaskets I put in my gearbox a few weeks ago were .015" thick - so twice that is pretty thick. I put a shim between the inner race and the crown wheel to move the bearing out so it didn't need 60 odd thou of shims shims = gasket - .002" |
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| Author: | drmini in aust [ Mon Sep 07, 2009 10:09 pm ] |
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Yeah the side gaskets now are bloody thick. I put a .010" shim on the RH cover to start with. I have also built a few boxes with NO side cover gaskets, just Loctite 515 Master Gasket sealant. No leaks... 
re the bearings, the angular contact outer rings have a thick side, this goes outwards. Used to be marked `thrust' but maybe the caring folk who make these now don't bother. 
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| Author: | simon k [ Mon Sep 07, 2009 10:16 pm ] |
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drmini in aust wrote: re the bearings, the angular contact outer rings have a thick side, this goes outwards. Used to be marked `thrust' but maybe the caring folk who make these now don't bother.
oh balls.... I hope that's the side with the writing on it |
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| Author: | drmini in aust [ Mon Sep 07, 2009 10:21 pm ] |
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Yep it is, you can sleep now Simon. 
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| Author: | simon k [ Mon Sep 07, 2009 10:25 pm ] |
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drmini in aust wrote: Yep it is, you can sleep now Simon.
thanks Kev - dodged another bullet 
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| Author: | Tombo [ Tue Sep 08, 2009 7:25 am ] |
| Post subject: | |
simon k wrote: shims = gasket - .002"
Thanks Simon, Thats the equasion i was after 
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