Continental Engines-Prohibited Use of Sealant

[M Towsley]

Just got this in my e-mail from the FAA. Thought it would be good reading for those interested.

[Robert Lees]

Re: Continental Engines-Prohibited Use of Sealant

Looks sensible to me; I don't like the use of RTV or similar anywhere near oil galleries (or fuel systems).

Rob

[Hank Jarrett]

Re: Continental Engines-Prohibited Use of Sealant

Interesting. I have seen several engines that had oil leaks at the case split and rear case attach where someone put a bead of sealant on the outside to try and stem the flow. Don't know of anyone ever having any success with it. Always looked like a pretty useless effort to me.

Hank

[3Dreaming]

Re: Continental Engines-Prohibited Use of Sealant

I worked on a Lycoming engine once that had a cylinder base nut come loose. When I replaced it and torqued it down the engine seized up. When the engine was torn down someone had used RTV on the cylinder bases. The previous overhaul was not very high quality.

[N96337]

Re: Continental Engines-Prohibited Use of Sealant

When I was working in the radial engine overhaul shop, there were a few engines that came in with RTV on the power section, nose, and blower section cases....with very few exceptions, they were junk and thrown away, from fretting allowed by the RTV. I find it hard to believe that people are still trying to use this garbage when there are plenty of GOOD sealants out there!!
John

[Guest]

Re: Continental Engines-Prohibited Use of Sealant

Wow!

I was anxious about using the TCM process called out in their SB on my C90 but I did do it.

Feeling better about it now.

I have an A65 that was done by the book using a light sealant (Tite-Seal) and has no leaks so the current process made me nervous and I considered using only Tite-Seal. Glad that I did not.

Dave