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Date:  10-9-2017
Number of Hours:  6.00
Manual Reference:  
Brief Description:  Located Firewall Penetrations

- Removed the engine mount and nose gear with Connor's help
- Located and marked most of the firewall penetrations and mounting locations. I still need to determine the ones associated with the ignition switch, Primary Power System wiring harness and engine sensor transducers.
- Drilled out and replaced 4 rivets on the starboard inboard lower engine mount bolt bracket. I assembled the firewall a decade ago in Ohio and messed up the holes for these rivets. My "fix" was to use pro-seal and -4-9 rivets, but the bucked heads were way undersize due to expansion of the rivets in the oversize holes. To properly fix it, I stepped up 3 of the rivets to -5-10 and one of them to -6-11. Connor shot the new rivets while I bucked. Because the rivet heads are larger, I had to countersink the firewall to accomodate them, so these 4 are no longer dimpled.
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