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DOUGs Web Site
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Date: 9-19-2018
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Number of Hours: 2.50
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Manual Reference:
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Brief Description: Installed left fuel tank to wing
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As I had done before on the right fuel tank, I drilled out all of the AN3 bolt holes to .201" to allow a little bit of play for tolerance. On the tip end, the two bolt holes are off on both wings so I drilled these out to .230". I cleaned off all of the sealant on the spar from the temporary installation.
I attached the left fuel tank to the wing with 4 5/32" clecos, installed all of the 1/8" clecos on the leading edge skin, and installed all of the AN3 bolts with loctite 277 and torqued to approximately 25 in-lbs. I then installed the rest of the clecos, riveted the 1/8" rivets first keeping the skin as flush as possible, then I riveted the trailing edge step with 5/32" rivets.
Because of the pre-drilled holes on the leading edge spar bracket did not line up properly on either wing, I matched drilled these holes to 3/16", and then ran a piece of emery cloth sandwiched to a shim in between the two skins to deburr the holes, and then installed the 3/16" rivets.
Fuel tank installation complete!!!
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the tightest space for bolts
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1/8" rivets in, installing 5/32" rivets
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installing 3/16" rivets
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