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Mickey mouse gasket woes


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7 replies to this topic

#1 ivantruckman

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Posted 18 October 2007 - 07:53 PM

the oil pump gasket broke in one of the ears, it was replaced approx 5k miles ago, the suction deformed it like an egg shape, i was thinking of using permatex silver silicone sealant, and letting it dry overnite ,than bolting it back together, has any one had any better luck, or any sugestions on procedure. thanks ...

#2 GeneralDisorder

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Posted 18 October 2007 - 08:08 PM

Replace the pump, they are known to warp in some cases and cause repeated failure of that gasket.

GD

#3 grossgary

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Posted 19 October 2007 - 05:23 AM

+1 on new oil pump, that's the way to go. i would not any any type of sealant to the oil supply, that's a very bad idea. if price is an issue maybe someone has a known good, low mileage unit available.

some over on the XT site have created a metal fitting of sorts to install inside of those ports to keep the gasket from being sucked in. one guy used muffler tape or something, the other guy is a machinist and made his own insert. i don't recommend it and i would never do that instead of just getting a new oil pump. i don't like the idea of introducing moveable, metalic parts that impede oil flow into the oil pump...particularly when it's not necessary.

#4 Reveeen

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Posted 19 October 2007 - 06:33 AM

As was stated: it is probably new pump time.

You can try hand lapping it on a piece of plate glass (this works sometimes with hydraulic pumps), but a new pump (in this case) is so cheap, and a new motor considerably more expensive than a new pump, that only in some kind of extreme case, is it worth the bother, and risk.

#5 ivantruckman

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Posted 19 October 2007 - 11:12 AM

i guess ill check it with a straight edge and some feeler guages. hmm

#6 Milemaker13

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Posted 20 October 2007 - 09:59 AM

The mod to keep the gasket from sucking in is actually pretty good. You will need a mill or drill press (or a crazy steady hand) and a small piece of copper tubing. Enlarge the suction port just enuff and just deep enuff to accept the "ring" you make from the copper tube. It then acts as a wall to keep the gasket in place... Somewhere here is a write up on it w/ pics. I have not done it, but it sounds rock solid.... Just takes some patience and skill in the machine shop, ya know?

#7 ivantruckman

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Posted 20 October 2007 - 05:44 PM

cool, should be no problem with the right end mill , i have access to a full machine shop, ill search for then thred, thanks

#8 grossgary

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Posted 20 October 2007 - 06:52 PM

cool, should be no problem with the right end mill , i have access to a full machine shop, ill search for then thred, thanks

i agree 100% with this being the only way to go. the other thing that i've seen done is to install a piece of metal that isn't rigidly fixed in position, that sounds like a terrible idea. if i were doing this, i'd tap and fit a piece rigidly to the pump.




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