Schleicher ASK-21
Assembly & Disassembly
Rev Dec 19, 2017
File: ASK-21_Assembly Disassembly Instructions GBSC 2017-12-19.docx Page: 2 of 7
Disassembly: (See photo details below)
Disassembly is largely the reverse of assembly. It requires 3 to 4 people:
▪ Make sure a wing stand is available (Stored In ASK-21 Trailer)
▪ Get the tool pouch from the trailer Fig 1
▪ Put the protective wing cushions on the trailer rails Fig 2
▪ Position the glider at the tail of the trailer.
▪ Lift the glider on to the fuselage cradle
▪ Position the fuselage cradle between the forward and rear cockpits. Fig 18
▪ Put a wing stand under the left wing
▪ Remove the TE probe and store carefully in the glider Fig 17
▪ Remove the tape from the wing root, horizontal stabilizer & all other taped locations.
▪ Remove the bolt in the leading edge of the horizontal stabilizer using the Allan wrench,
▪ Remove the horizontal stabilizer by moving it forward. Fig 11,12
Do NOT rock the tips of the stabilizer to move it forward - this can damage it!
▪ Install the horizontal stabilizer in the trailer fittings.
▪ Disconnect the 4 control connections behind the spar tunnel.
▪ Remove the rear wing pins using the red T shaped tool. Fig 6,7,8
▪ Remove the wing-tip wheels. (Store in Blue ASK-21 tool box)
▪ Make sure the wing fixtures in the trailer are at the back of the trailer
▪ Remover the right wing first
o Support the tip
o Remove the main pins
o Slide the wing out, and walk the spar to the trailer rail
o Rotate the wing to vertical
o When the tip is perhaps 20 degrees from the fuselage, move the spar to the wing dolly.
o NOTE: The pin hole closest to the wing tip goes onto the pin on the dolly.
o Walk the wing into the trailer until it stops.
▪ Repeat the above procedure for the left wing.
▪ Clean & re-grease all fittings and store in tool pouch Fig 1
▪ Strap the fuselage into the fuselage dolly, and roll it into the trailer. Fig 18
▪ Make sure ALL tools and parts are in the tool pouch Fig 1
▪ Return the Tool Pouch & Wing Stand to the trailer
▪ If the trailer is going on the road, activate the over-center dive brake locks using the control
push rods.
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