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Kupe's Zodiac 650B
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Date:  1-10-2019
Number of Hours:  6.00
Manual Reference:  
Brief Description:  Right Fuel Tank Level Calibration

Performed the right fuel tank level calibration. Thought this should be pretty quick as I had a set routine down for performing this on the left side. However, after the third gallon addition, the voltage on the fuel sender never changed again. Obviously something wrong.

So I emptied the tank, removed the underwing access panel and performed a visual inspection of the sender and wiring. Turns out the grounding wire I had on the sender itself was not attached securely to the sender body. So I cut off the ring connector, installed a new one, then reattached it to the sender (it's secured to one of the 5 screws holding the sender in place).

I restarted the test, and noticed after the 5th gallon, the reading didn't change. Did some searching on the internet to find out that sometimes the senger needs a little "encouragement" to move the float. So I jiggled the wing from the tip and recalibrated, and sure enough the voltage changed. After that I started over one last time and completed the test by jiggling the wing before each calibration reading. Hopefully, the jiggling will occur normally in a flying aircraft!
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