Thursday, July 29, 2010

N184JP Build Log-Seatback WD-808 Installation

Mike Ballard recommended I install the seat back for added support and rigidity before removing the forward skins [for the conversion].  Good idea.  Thanks Mike!

So tonight that was accomplished.  Pretty straight forward.

Make F-817 plate
Countersink and prime F-817
Attach F-817 (see notes on riveting)
Position WD-808 (seatback) in relation to rails & drill holes
Make spacer & prime
Attach WD-808 with AN hardware, torque 20-25 in. pounds
Done.

NOTES:

  1. Main thing as I saw it was to make sure WD-808 is level and distance from center-top of rear seat bulkhead and any given hole (L&R) was the same. Make sure fuse is level, left to right, or leveling the WD-808 bar is exercise in futility.
  2. Also, I was fortunate that the WD-808 fit perfectly without needing any pulling in or pushing out of the fuse structure as suggested might be needed in the manual.
  3. Riveting the uppermost rivets in the F-817 plate are tough.  I ended up using some very large end wrenches (1-1/2″ & 1-1/4″) as bucking bars.  Worked surprisingly well (some are on floor in photo).
  4. I had hard time finding distance from WD-808 to top edge of F-817.  It’s 8/32″ mas o’ menos.

Here are a couple of “enroute” photos of the process. Click on the images to enlarge them.

WD-808 in place.  I measured every possible distance and used level to make sure we were okdoky. (Click to enlarge)

WD-808 in place. I measured every possible distance and used level to make sure we were okdoky. (Click to enlarge)

Close-up before final drilling. Almost missed the detail showing the approx 8/32 edge distance of WD-808 to top of F-817 to make room for spacer (Click to enlarge)

Close-up before final drilling. Almost missed the detail showing the approx 8/32 edge distance of WD-808 to top of F-817 to make room for spacer (Click to enlarge)

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