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(23) Depress "AP DISC TRM INT" pushbutton. (24) Test the push-to-talk pushbutton with the VHF communications system, if installed. (25) Set "A / P MASTER" switch to "OFF". (26) If installed, set "RADIO MASTER" switch to "OFF". (27) If installed, set "COMPASS" switch to "OFF". (28) If installed, set "EHSI MASTER" switch to "OFF". (29) Open main switch-breaker. (a) "AP" annunciation on A82 flight computer flashes for approximately 5 seconds and goes off. (b) A/P buzzer sounds for approximately 6 seconds. (c) The servo-actuators are disengaged. PAGE INTENTIONALLY LEFT BLANK WA Validity : S / N 1 - 9999 27 30 01Page 208 (BA) MAR 00 PYLON ASSEMBLY MAINTENANCE PRACTICES 1. SERVICING None 2. REMOVAL / INSTALLATION - PYLON A. Tools and consumable materials - Grease (TB 04-004A) - Blanking caps and plugs - Tie-wraps B. Removal of pylon (Figure 201) 1) If installed, remove inspection doors 211L and 211R. Otherwise, remove engine cowlings, then L.H. access door (and R.H. access door, if installed) on firewall. With front battery (option) 2) Remove the battery- refer to 24-30-02. 3) Remove the battery tray support - refer to 24-30-04. All 4) Remove the front seats - refer to 25-11-00. 5) Remove inspection doors 235L and 235R. 6) Remove the visors and tilt R.H. and L.H. instrument panels. NOTE : On pilot side, press on spring plate (23) to unlock L.H. instrument panel - see Detail A. 7) Remove the central console - refer to 31-10-02. 8) Cut and discard all the tie-wraps attached to the pylon. 9) Remove all the hoses and disconnect all the wire harnesses which may hinder the passage of the pylon upward during removal ; install blanking caps and plugs. 10) Remove any instrument or equipment which may be damaged when removing the pylon. 11) Remove and discard cotter pin (4) ; remove nut (3), washer (2) and bolt (1). 12) Disconnect elevator rod (11) from the pylon. 13) Remove and discard nut (9) ; remove bolt (6), thick washer (8) and washer (7). 14) Disconnect control wheel sliding tube (10) from gimbal joint (5). 15) Repeat steps 13) and 14) for the second control wheel. 16) Remove and discard nut (15) ; remove washer (14) and bolt (13). 17) Remove and discard cotter pins (21) ; remove nuts (20), spacers (19), washers (18) and (16) and bolts (17). 18) Push the pylon forward to clear torque rod (12) from gimbal joint. WA Validity : S / N 1 - 9999 27 30 02 Page 201 (DA) MAR 00 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(38) |
