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Date:  4-27-2013
Number of Hours:  2.00
Manual Reference:  7-8
Brief Description:  Tanks are 100% complete

"The right tank presure test went off without a hitch and was called complete earlier in the week.

I used a digital manometer to pressure test the tanks at 1 PSI, using this method i could measure down to a thousandth of a PSI. Granted the slightest change in tempeture would change the pressure in the tank... Even a warm hand touching the the outter surface would raise the pressure in the tank a few thousanths of a PSI. The great thing is that the even the slightest pin hole shows up instantly with a constant unwinding of pressure.

The left tank, I had a leak around the fuel cap flange, specifically on the inside where the vent line support clip attaches to the cap flange. I gooped this up with pro-seal the best I could using my finger to mash the sealant around the support clip attach point. There was also a very slight gap between the cap flange and the outter skin ( less than a finger nail gap) in this same area. I thinned some sealant down with toluene to the point where I could suck it up in a syringe and flow it into the ""gap""... after this cured for a couple days I retested the tank & all proved to be a wrap. Below are my test results.

Left Tank Right Tank
PSI Time (HH/ MM) Temp PSI Time (HH/ MM) Temp
1.031 0:04 72 0.994 0:01 69
1.027 1:50 72 1.014 0:15 73
1.029 3:01 72 1.015 0:16 73
1.029 5:10 72 1.026 1:30 74
1.055 13:48 74 1.016 2:20 74
1.090 15:30 74+ 1.015 2:30 74
1.010 9:22 73
1.007 12:30 73
1.014 15:57 74
1.015 17:30 74"
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Testing gear

Testing gear

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Done top view

Done top view

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Done bottom view

Done bottom view

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