Thursday, May 23, 2019

Section 18 - Fuel Tank (j-stiffener; inboard aft rib; vent line; fuel level sender; proseal baffle & z-brackets)

Finished sealing the fuel tank this week!  First, I riveted the j-channel and attach bracket to skin, and then Prosealed (5th cartridge) the inboard aft rib, bulkhead union fitting and nut, and encapsulated shop heads of rivets in j-channel and attach bracket.  Then I fabricated left fuel level sender (most of time was to bend wire - first one broke, used wire from right sender; had to order another sender [$29] since Van's nor vendor sells just the wire). Finally, I torqued the bulkhead union nut (55-60in-lb) with a crowfoot wrench attachment for a torque wrench, and then Prosealed (6th cartridge) the fuel level sender (checked continuity after sealing), and prosealed & clecoed the baffle and z-brackets to tank, as well as wet-installed pop-rivets in the baffle/z-brackets. Images are a bit out of order:

 Encapsulated shop heads on j-stiffener:



Encapsulated shop heads on attach bracket:


Torqued vent line - note that I forgot to install the vent line PRIOR to Prosealing the inboard aft rib ... but, it turns out this may be a better procedure (no proseal mess on the vent line), so I'll likely do it again for the right tank.


Fuel level sender in the empty position (1/16" from bottom):


Fuel level sender in the full position (1/16" from top):


I broke the wire, so I fabricated it from the right sender (another sender has been ordered):


Fuel sender, prior to wet installation:


J-stiffener, riveted:


Inboard aft rib, Prosealed and clecoed:


Vent line, routed around filler neck:


Baffle-to-skin, fully clecoed:


Other side:


Z-brackets, inner 5 attached via blind rivets (wet-riveted by twirling in Proseal):


Other side:


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