Leaky inspection cover lower bolt

Bill in Brunswick · Nov 19, 2016

I'd put new gaskets on the TO30 inspection covers a while back.
The lower bolt on the right cover that also holds the muffler bracket leaks no matter how tight.
Do you guys add a gasket or washer to the bolt? Or permatex?
Or..... ?
The oil level is down around the bolt level but maybe it needs to be lower?
Thanks ahead of time.

Steve@Advance · Nov 19, 2016

The bolt hole is the proper level for the oil. That is when sitting on level ground...

But in reality the oil will be sloshing around, going higher and lower than the bolt when in use.

Something you might try is finding a longer bolt, about 2", one that is threaded all the way to the head. Put the bolt in from the inside, tighten it securely against the case with some sealer on the threads. Then put the cover on with a nut on the threaded end of the bolt, then put the muffler hanger on with another nut.

Bill in Brunswick · Nov 19, 2016

Nice !!!!
I would have never thought of that !!!
Sounds like that will do the trick.
Plus it will be easier putting things back together since there is a bolt to hang things on.
Thanks Steve !

Brendon Warren · Nov 19, 2016

Brilliant idea Steve. I think I'll steal it.

Brendon Warren · Nov 19, 2016

That would make it easier to set the gasket and the ones with response control like on my 180.

Leaky inspection cover lower bolt

Bill in Brunswick

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Steve@Advance

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Bill in Brunswick

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Brendon Warren

Well-known Member

Brendon Warren

Well-known Member

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