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| driveshaft seals. https://www.ausmini.com/forums/viewtopic.php?f=2&t=84271 |
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| Author: | Giantinamini [ Tue Jan 21, 2014 12:34 pm ] |
| Post subject: | driveshaft seals. |
Hi, i just changed my driveshaft seals (along with a few other bits) as i had a leak. I put the car all back together and took it for a drive and it still leaks. Is there any trade secrets when re-installing these seals? Anything i could've missed? Does it just sit flush with the end of its housing? Very frustrated as its going for its RWC soon Any help would be very appreciated.. |
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| Author: | Irish Yobbo [ Tue Jan 21, 2014 2:10 pm ] |
| Post subject: | Re: driveshaft seals. |
Has your gearbox been rebuilt? The diff side covers may have been put on slightly off-center to the diff output shafts. When tightening up the side covers, you should put the output flange/ inner CV onto the diff shaft before tightening. This will ensure that the side covers are in the right place. I'm not sure how much difference this makes in reality (I don't think there's that much movement) but the theory is sound. By memory the seals are pretty flush with the side covers. However make sure that the side covers haven't been damaged. We have leaking diff seals on our ute because some dodgy mechanic damaged the housing getting the old seals out, and it now leaks *around* the seal. |
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| Author: | drmini in aust [ Tue Jan 21, 2014 6:41 pm ] |
| Post subject: | Re: driveshaft seals. |
The side covers fit neatly into the gearbox casing, they do not move about on the bolts like a timing cover can. So it matters not whether you fit the output yokes (or pot joints) first. A leaky seal after replacement usually indicates the side cover bush is worn. These are a neat fit on the output yoke when new, but when they wear the yoke can move about then the seal leaks. Grab the output yoke/ pot joint and try to move it up and down. Cure is to remove the side cover, cut or press the old bush out, fit a new bush to the cover, and get it set up true in a lathe and bored to fit your output flange. New bushes are all around .007" undersize in the bore. Measure the thickness of the old cover gasket, if the new one is thicker you will need to re-shim the diff to preload the bearings correctly. Do this in car? I dunno... I've never had to. There are 2 bush sizes- Cooper S/Minimatic only, and all the others. |
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