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22) Remove and discard locknuts (14), retain washers (13) and bolts (12). 23) Remove and discard locknuts (6), retain washers (5) and, if installed, thrust washer (7). 24) Remove bolts (2), shims (3) and washers (1). 25) Remove the wing root seals located on the wing upper surface at wing / fuselage junction. 26) Hold the wing assembly on its padded supports and lift the fuselage with the hoisting device - refer to 07-20-00. CAUTION : TO AVOID DAMAGING THE STRUCTURE, THE SUPPORTS MUST PERFECTLY FIT THE FUSELAGE PROFILE AND HAVE PADDED BEARING AREAS 27) If the hoist is rail-mounted, remove the fuselage, place it on two padded supports (one positioned at the rear at a frame and the other under the wing spar tunnel) and make sure the nose landing gear rests on the ground. 2. INSTALLATION OF THE WINGS (Figure 401) A. Tools and consumable materials - 2 fuselage padded supports - 2 wing padded supports, P / N TB10 99000911 - Blanking caps and plugs - Grease (TB 04-004A) - Petrolatum (TB 04-012) - Red paint - Adhesive (TB 08-006A) - Clean lintfree cloth - Cleaning agent (TB 11-003) - Teflon tape (TB 05-938) - Hydraulic fluid (TB 02-001) - Sealant (TB 09-013A) - Sealant (TB 09-007) ADAA Validity : S / N 1 - 9999 57 00-00Page 402 (EA) JUN 02 - Torque wrench 0 - 885 lbf.in (0 - 100 N.m) - Tie-wraps B. Procedure 1) Inspect the splices, spacers, fittings and mounting pads for correct condition and torque - refer to 20-00-01. 2) Inspect the wings (spars, splices, spacers, etc.) and the fuselage (skins, tunnel, frames, etc.) for corrosion. 3) Make sure there is a Teflon tape (TB 05-938) on lower face of wing upper surface skin at footstep. Inspect for condition. Replace if necessary. a) Remove the Teflon tape and clean the skin with a clean lintfree cloth moistened with cleaning agent (TB 11-003). CAUTION : DO NOT TOUCH THE ADHESIVE SIDE OF THE TEFLON TAPE TO AVOID BAD BONDING. b) Bond the Teflon tape (TB 05-938) under the wing upper surface skin. c) Cut excess Teflon tape (TB 05-938). 4) Inspect the bead of sealant around the spacers for condition. Replace the sealant if necessary - refer to 57-20-03. 5) If necessary, protect the wings splicing and the spacers with sealant (TB 09-007) - refer to 20-00-09. 6) Inspect the anticorrosion protection between the wing root and the rib located at 55.41 in (1406.5 mm) from the aircraft centerline for condition. If necessary, protect with sealant (TB 09-013A) - refer to 20-00-09. 7) Position the fuselage over the wings and lower it slowly until it perfectly aligns with the spacers and the front and rear attachment fittings. 8) Engage the spar into the tunnel (frame C2). 9) Lubricate bolts and ball ends with grease (TB 04-004A) - refer to 12-21-04. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 57 机翼 TB20飞机维护手册(7) |
