Up at 6:00 am and was in the shop around 6:30ish.
I ordered some of the wing walk material from Ray Allen Co. and ordered an extra piece to cover my brake pedals with. None of the 'spray-on' products looked very good. So I cut out and stuck some on the pedals, then let them bake in the sun all morning.
Brake pedals in place with non-skid on them.I pulled out the wingtips again and finished installing the two ribs that go in them. I also positioned and drilled the Archer VOR antenna inside the left wingtip. Pretty easy. I'll glue it down later.
VOR antenna in place.After a short break to fix the lawnmower that required a trip to the hardware store, where I picked up an oil can, I started in on the brake system. I went around and tightened up all the fittings first. I just knew that I wouldn't have any leakes or air bubbles and this would be easy. (Hehehe)
I connected a short piece of tubing to the oil can and the oil line fitting and started pumping away. Hey.. this isn't bad! I pumped until the line was all pink. When I disconnected the tubing from the fitting, some of the fluid drained back out which left an air bubble at the top near the reservoir. Ugh! Ok... lets do the other side first. Repeated procedure on other side, this time pumping enough fluid to get the level in the brake reservoir higher so that when a bit drained out, it wouldn't suck air. Cool.. done. Back to other side to push a little more fluid in to push out the air at the top. I had Sandi help me pump more in until the resevoir was full.
Oil can hooked up.Ok.. that was easy enought. Let's start working on the brake pedals. I had previously had them mounted and all the hardware was there, so it was just a matter of climbing in the fuse and bolting them up. As soon as I started fussing with the first pedal and actuated the brake cylinder a couple of times.. POOF air bubbles!! Arggh! The cylinders had trapped some air in them and as soon as I played with them, they appeared. Dman. Oh well. I finished installing the brake pedals and getting all the cotter pins in. It was a pain doing all this in the fuse, laying on my stomach, sweating my butt of. (Was 96 deg. in the shop).
Brake lines.Both brake lines now had bubbles in them from working on the brake pedals. I also discovered a leak at the parking brake valve in the 90 degree fitting. So I drained all the fluid out of the left brake line, put one more turn on the fitting and filled the line back up, making sure I tapped on the cylinder to get the air out. I pumped more fluid through the right line to push all the air out of it as well but didn't need to drain it. I discovered another leak on the right brake line at the fitting where it exits the bottom of the fuselage. The line as bent a bit at the collar, so apparently it was seating well. I flexed the line a bit to get it straight. I need to check on this tomorrow to see if it is still leaking or not.
So the brake system is done! Hopefully I won't have any more leaks but I think I'll have to tweak that fitting at the right light again.
Here are my tips for putting the fluid in:
Make sure all of your fittings are tight before starting.
Pump enough fluid to get past the first brake cylinder, then tap on it several times, wiggle it around, pump a little more. This will help get the air out of it.
Repeat above when you get past the 2nd cylinder.
Pump enough fluid to fill the reservoir about the fitting level, so that if any drains out, it won't suck air.
Have lots of towels/rags ready, it is a messy job.
Mike S. noted an adel clamp that holds the engine breather tube that needs to be installed on the firewall, so I drilled the hole for that while I had easy access.
Later on I was playing around trying to find a good location for my fuse blocks and realized I caused myself some problems by the way I riveted on the sub-panel ribs. I put the angles on the inboard side when I should have put them on the ouboard side. They way I have them now will interfere with any deep radio I might have. So I'll have to drill these out and move the angles.
Getting closer to actually doing some electrical work.
(Time: 8 hrs)