To finish this section I need to apply some tank sealants to the penetration points of the firewall. So to make this section more efficient with the rest of the parts that need tank sealant (the oil reservoir and also the bushing for the rudder cables) so I skipped ahead a little.
Once I got the ranks sealant applied and all the fittings set right where I can tighten them by hand with no gaps at all, I set out to torque these. I also torched the bolts that hold the oil filter to the firewall. I found that the friction torque to overcome the nut plates was nearly 20 in-lbs. They are an3 bolts so I ended up setting my torque wrench to 35 in-lbs.
Torquing the fittings was recommended to be between 70-120 in-lbs. so I chose 90. The aluminum tubing we use is softer and so you do not want to use the higher torque setting. It was pointed out in the plans but also it's in the standard Aircraft handbook with a pretty nice explanation.
How you actually do this is another story. I ordered crows feet since I didn't have any and they appeared to be perfect for the job. However, the space was so tight I ended up having to grind them down quite a bit. It's always nice to purchase new tools and immediately begin to sand them down ☺�
Once I got those to a reasonable dimension it was just a matter of patience and perseverance. Luckily I got them all done.
Onto the next section!