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Validity : S / N 1 - 9999 27-20-04 Page 202 (BA) MAR 00 16) Make sure the elevator trim tab control cables do not interfere with the control ; if necessary, protect the control with adhesive tape (TB 08-917). 17) Tighten nut (16). 18) Engage control rear section (32) on support (25) and tighten nuts (28) and (44). NOTE : Support (25) must be positioned at approximately 1.9 in (50 mm) from cage (30) rear end - see Figure 202, Detail B. 19) Engage lever (37) onto yoke (35) and install bolt (36). 20) Temporarily install control knob (1) and secure it to bolt assy (6) - see Figure 202. 21) Adjust rudder trim tab (38) travel - see Paragraph 3. 22) Install washer (39), nut (40) and new cotter pin (41). 23) Tighten jam nut (33) and fold down lockwasher (34) tab. 24) Install inspection door 312 (42). 25) Remove control knob (1). 26) Make sure all the tools and materials are removed and the work area is clean and free from debris. 27) Install the tunnel - refer to 25-15-00. 28) Install the pedestal - refer to 25-14-00. 1 - Control knob 2 - Bolt 3 - Stop 4 - Support 5 - Spring pin 6 - Bolt assy 7 - Housing 8 - Rack 9 - Nut 10 - Flexible control assy 11 - Grommet 12 - Bolt 13 - Clamp 14 - Battery tray support 15 - Washer 16 - Nut 17 - Bracket 18 - Nut 19 - Washer 20 - Retaining ring 21 - Grommet 22 - Nut 23 - Washer 24 - Grommet 25 - Support 26 - Retaining washer 27 - Washer 28 - Nut 29 - Jam nut 30 - Cage 31 - Split bush 32 - Control rear section 33 - Jam nut 34 - Lockwasher 35 - Yoke 36 - Bolt 37 - Lever 38 - Rudder trim tab 39 - Washer 40 - Nut 41 - Cotter pin 42 - Inspection door 312 43 - Screw 44 - Nut 45 - Rudder Rudder trim tab control - Removal / Installation Key to Figure 201 Rudder trim tab control - Removal / Installation Figure 201 3. ADJUSTMENT / TEST - RUDDER TRIM TAB A. Tools and consumable materials - Vernier protractor - Rudder trim tab travel jig 8110 TB20 27020000 NOTE : The travel jig is used only in Paragraph C. in replacement of the vernier protractor. B. Adjustment of rudder trim tab travel without travel jig (Figure 202) 1) Set the rudder to zero degree. NOTE : The aircraft centerline is materialized by a rivets line on the rear fuselage. 2) Set control knob (1) to zero degree. 3) Position and hold vernier protractor (4) onto the rudder below rudder trim tab (2). 4) On vernier protractor (4), check the alignment of rudder trim tab (2) with the 0° angle. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 27 FLIGHT CONTROLS TB20飞机维护手册 飞行操纵(25) |
