O-235-C1 Tach Oil Seal Leaking

[Bartman]

Hi All,

My tach oil seal was replaced last year and now it's leaking again. The shop that did the work has been sold and restaffed so I can't really go back and ask for anything. The shop by my hangar says they can pluck the seal out with a screwdriver blade and pop a new one in but I'm wondering if anyone has an idea why it's leaking again. Or do they typically need frequent replacing? The current seal has about fifty hours on it.

Any value in going to an electronic tach?

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Thanks!
Bart

 

[Hiperbiper]

Bartman,
Be careful about getting that seal out, I've never seen one that will "pluck out" with a screwdriver ...
It ain't an o ring, its an actual mechanical seal. Using a screwdriver to get it out generally ends up messing up the seal bore or cracking the bore boss. Either one means a new accessory case.
Chris

 

[Bob Turner]

Ouch! Continentals are easier.

 

[Bartman]

Thanks guys. I ordered the tool, my IA friend said he can use it on the flight school planes he maintains so it'll go to a good home.