Engine Exhaust Best Practices

[Tim Glubaskas]

Attached is a document that a team of Lycoming, Continental, Textron, Eaton, and others came up with on best practices for maintaining Vee band Clamps. The ACO would like to get some more feedback from mechanics on it that work on it. Also some help getting the document in the hands of people that might benefit from it.

Please comment here or you can send me any feedback direct and I will forward it to the appropriate folks in the FAA if that is easiest.
Any discussion on what you read is also welcomed-


Thanks!

Tim


Exhaust Best Practices

[Tim Glubaskas]

Below are comments we have passed along thus far -
T

Below are some comments received


Page 16 When talking about finger-tighten, comment – It is not practical to try to finger tighten the locknuts.
I believe commenter was stating that with most exhaust clamps the nuts really wont move with finger pressure only.
Would have to test to verify

Page 19(s) 25 hours may be too soon. We also concur. 50-60 hours would be far more practical and would actually be easier to follow faithfully.

Page 20(h) Commenter agreed that it was a good idea to use the anti-seize as it helps slide together far easier.
They did question why nickel-based was specifically called out, precluding the use of copper-based. Copper does have a lower temperature resistance but
it is still quite high. 1800 vs 2400F

Page 27(b) Commenter states that they feel the 500Hr life-limit on Spot Weld couplings is too low. We concur.


Thanks for giving us and our group the opportunity to comment.

Will pass along any more as they arise

Tim