Fuel tank cap lubrication

[Ayecapt]

hi been searching the threads but no luck. I know that there is a tip in here someplace because i saw it a while back.

 

Which lubricant should we use on sticky orange o rings in a fuel tank cap?

 

Aircraft is a Tecnam Sierra.

 

 

[johnm]

Ayecapt ................ try this if you like ? - its worked for a lot of others

 

remove cap (or course) tip cap upside down (of course) on base of cap - now on top cause you have tipped it over (of course) you will see a thin white / pvc plastic disc (diameter of cap) - if you use a sharp knife you can trim the excess that overhangs the edge of cap - like peeling an apple - no lubricant required

 

 

[Ayecapt]

I assume the white disc is on the sealed side of the o ring. Will take a look at it thanks for the reply.

 

 

[johnm]

yes sealed side - between o-ring and fuel

 

think it might be just a locator - so cap goes into socket true ?

 

 

[cherk]

hi been searching the threads but no luck. I know that there is a tip in here someplace because i saw it a while back.Which lubricant should we use on sticky orange o rings in a fuel tank cap?

Aircraft is a Tecnam Sierra.

personal preference only FWIW .........petroleum jelly.(Vaseline)

 

 

[Downunder]

I was reading something the other day where someone recommended white lithium grease for lubrication in fuel related areas as it disolved in fuel, therefore not posing a blockage problem. Obviously a lubricant blocking your fuel filter will ruin your day.

 

I don't know if this is true or not.......for you to research....

 

 

[old man emu]

personal preference only FWIW .........petroleum jelly.(Vaseline)

K

 

Y

 

 

[Ayecapt]

KY

Ok but ive run out , and am too embarrassed...lol

 

 

[Soleair]

KY

Or the organic equivalent?

 

 

[nong]

What about a Bravo with metal caps manufactured a little too large in diameter?

 

A few minutes work with a flat file fixed each one.