[Camillo]

I'm installing the brakes lines and I'm not sure how the AN fitting should be installed through the landing gear mount and the bottom skin. There are some options:

1) fitting will "clamp" both bottom skin and ldg. mount;
2) fitting will clamp only the bottom skin;
3) fitting will clamp only the landing mount.

I think the latter is right: in fact, drawing 16 says to open the bottom hole to 5/8'', which should be larger than the fitting (so it will pass throw it and make no grip). In addition, this makes sense thinking at hard landings: if it was linked to the bottom skin, too, it may crack.
On the other side, from dwg. 36/A it seems that the fitting only clamps to the bottom skin (it is true, however, that in such dwg. landing mount is not shown).

Am I right?
Thanks.

You will see how Mike S. did it at the following address (4th photo from the top). I think this is the right way to do.

http://www.my9a.com/finish2.asp

 

[Camillo]

Solved. I enlarged bottom skin hole to 5/8''.
Now, AN fitting is only linked to the landing gear mount. I hope this would be OK.
In fact, a lot of builders did the opposite, mounting AN fitting on bottom skin and landing gear mount. Someone put a shim between skin and gear mount to avoid distorting bottom skin when torquing fitting.