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KENNETH T.'S WEB SITE
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Date:  6-11-2008
Number of Hours:  4.00
Manual Reference:  Dwg. 4 & 5
Brief Description:  Installed elevators onto horizontal stabilizer.

Realizing that installing the bolts, washers, and nuts through the elevator rod bearings and HS (horizontal stabilizer) bearing would be an almost impossible task with fat fingers and small openings, I bit the bullet and ordered some special tools from Avery Tools. They included a spring loaded bolt grip and washer wrenches as well as temporary assembly pins. (Avery part nos. 5866, 23800, & 445). I had seen them on the EAA "Tips for Homebuilders" videos that came with the EAA e-mail news letter. It was difficult even with the tools, but Charlotte and I slowly and patiently learned how to use them. I spent a lot of time on the garage floor looking for AN960 washers.
Before installing the elevators one must streamline them with the HS and drill the horns. I bought an aluminum bushing at Home Depot to use as a drill guide to protect the HS bearing while drilling the pilot holes in the horns. Vans says to use a #40 bit for the pilot hole but the smallest ID bushing I could find fit a # 27 bit and it worked fine. I then drilled out the pilot holes using a 1/4' bit. Finding the bushing for the drill guide was the hardest part of the whole process. One of the special tools was a set of bent-nail type temporary pins (with the same diameter as the AN3 bolts) that had handles which would unscrew so that you could move the evlevators up and down. They are a life saver as you have to remove the elevators quite a few times before installing the bolts for the last time.
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Pilot drilling the horn thru HS bearing using bushing guide.

Pilot drilling the horn thru HS bearing using bushing guide.

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Elevator horns bolted through HS bearing.

Elevator horns bolted through HS bearing.

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Tightening last nylon lock nut.

Tightening last nylon lock nut.

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