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General Category => General Discussion => Topic started by: Grog on August 14, 2020, 03:08:57 AM
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G,day All,
I have recently brought a 78 Le Mans and it has a oil seep from the clutch push rod o ring at the rear of the gear box.
I have tried a new o ring with no success and on looking closely the bore on the rear of the box has a wear pattern.
I have been advised by a very knowledgeable bloke the the best way to remedy this is to have the bore sleeved with a bronze insert.
Any other thoughts from you blokes...
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You could try a double o-ring outer body to see if that helps.
https://www.mgcycle.com/index.php?main_page=product_info&cPath=193&products_id=4793&zenid=300d42ad816e231a69ade5e58b450bf3
Ultimately though, the best way will be to bore the rear cover and sleeve it.
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All great suggestions , but way too much work ! I had a machinist turn a new one for me with an extra groove for a second "O" ring .
Don't be afraid to search for a slightly tighter fitting set of "O" rings . Certainly easier than removing the trans cover, etc. Peter
It's still working on mine !
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I have had success using an X profile O-ring. The theory is the sealing points are in a slightly different place than the round profile o-ring and there are two sealing points. Here is the one I use ----Buna #115. They are also called Quad seals. Purchased mine from my local farm hydraulics shop. Cost a whole 48 cents U.S.- Guzzi content.
https://www.mcmaster.com/90025K236/
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Appreciate all the replies.
Some good options there to think about...
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You could try a double o-ring outer body to see if that helps.
https://www.mgcycle.com/index.php?main_page=product_info&cPath=193&products_id=4793&zenid=300d42ad816e231a69ade5e58b450bf3
Ultimately though, the best way will be to bore the rear cover and sleeve it.
My 1977 T-3 and I went round and round, to making custom rings. Double ringed body with a new bearing is holding up.
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I have done several of these with a stainless bore insert. It is a lot of work, so I would try all the other suggestions first. I would even try to find a good used cover before going the insert route.
http://www.motohayes.com/shoptask/rearcover/throwoutbore.html (http://www.motohayes.com/shoptask/rearcover/throwoutbore.html)
Patrick Hayes
Fremont CA
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Again, thank you...