Disassembly

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A request on the GG for information on how to remove your plane from a non-airport landing site by disassembling it enough to fit it on a trailer or flat bed wrecker lead to this article and the check lists below.

2-place no wings.jpg

Removing the wings (4 place)

  1. Remove the tips.
  2. Remove the aileron to control horn bolt at the center of the fuselage under the back seat.
  3. Remove the bolts to the outer aileron bearing bracket and aft spar.
  4. Slide aileron assembly with counterweight and bearing bracket out.
  5. Lower flaps to access to the nut on the flap drive arm.
  6. Remove nut and washer.
  7. Remove outer flap/inner aileron bearing bracket. (can be a pain to get to the bolt heads)
  8. Pull flap out, some care is needed to break loose the RTV at the inboard end. Repeat on the opposite side.
  9. Back off the 2 bolts on each flap drive torque tube clamp and loosen the pinch bolt. The clamp is an aluminum block that fits around the large torque tube in the outboard corners of the "hell hole" under the back seat. The 2 bolts that pin the clamp to the torque tube need only be backed out 3-4 turns, and will sometimes take the threads out with them if backed completely out. Pull the torque tube out of the clamp block and first bearing bracket on the wing.
  10. Remove sump covers from under wing root.
  11. Disconnect Pitot line on left wing. Plastic hose that couples the 2 1/4" aluminum tubes is probably hard, just cut it and replace with new later.
  12. Disconnect electrical (Pitot, Strobes, Nav lights, stall warning switch, etc.)
  13. Drain fuel from wing root sumps by removing the drain valve and using a large diameter funnel. 8-10" is about as small as you can use and not lose fuel on the ground due to any breeze and to the run-off from the edges of the sump, since the threaded boss is flush with the surface.
  14. Loosen the fuel lines AT THE SUMP and remove the vent line (some vent lines have a rubber connection between the wing and the sump line, some have a hard aluminum line with a flare at both ends).
  15. Remove the wing panel to center spar bolts (2 each wing, exactly on the fore and aft centerline of the spar).
  16. Position 1 person at the inboard leading edge, one at the inboard aft edge and one at the wing tip. The person at the wing tip lifts UP to unbind the wing from the weight pulling down on the socket joint of the wing spar to center section. The two inboard people CAREFULLY rock the wing up and down 1/4"-1/2" at a time, while the person at the tip pulls OUT. You are trying to move the wing out from the wing root an inch or so, to allow access to the AN fuel line fittings at the inboard rib on the 19 gallon tanks. You MUST NOT allow the bulkhead fitting in the wing to rotate while you loosen the line nut, so have the appropriate size wrench handy and HOLD that bulkhead nut against the rib and turn only the line nut. On 26 gallon "long range" tanks you can reach the bulkhead fitting at the second rib by removing the inspection covers from the inboard bay. DON'T take the 19 gallon tank inspection panel screws out! The first bay on the standard tanks is WET! Same caveat applies to the 26 gallon tanks about the bulkhead fitting... HOLD THE FITTING and turn only the line nut.
  17. With fuel lines loose from wing, rock it as before, nose up and down while pulling outboard. The socket joint is just over 1 foot long, so go slow when you get beyond 8-10" away from the wing root. Pull wing panel off and set on a padded surface.

There are some differences in removing the 2 place wings. Mostly because of the differences in the fuel system.

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