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B. Procedure 1) If removed, perform the following operations : a) Install rear pulley (56) with a shaft, a washer, a nut and a new cotter pin (57). b) Install small gear (11) on shaft (7), attach it with bolt (8), washer (9) and a new nut (10). c) Lubricate with grease (TB 04-004A) shaft (7),install it on support (12) and attach it with washer (15) and circlip (16). CAUTION : DURING INSTALLATION, BOTH HOLES (b) LOCATED ON EACH GEAR WEB, MUST BE FACE TO FACE -REFER TO DETAIL B. d) Lubricate with grease (TB 04-004A) shaft (22), install it on gear support (23), then install large gear (24) and attach it with screw (27), washer (25) and a new nut (26). e) Install tube (19) on shaft (22) and attach it with bolt (20), washer (17) and a new nut (18) NOTE : Obey the installation direction of the tube. Dimension 0.28 in (7 mm) must be on shaft (22) side. 2) Install cable (53) (two strands) to install support (12). To do so, route it between supports (21) and (12), use a screwdriver as a lever at point "a" if necessary. 3) Install support (12) on the pedestal and position tube (19) into gimbal joint (61). 4) Install front pulley (54) with a shaft, a washer and a nut. Install a new cotter pin (55). 5) Attach supports (12) and (21) on the pedestal structure with washers (14) and bolts (13). 6) Remove cable grip (52). CAUTION : KEEP THE POSITION OF HOLES (b). DURING INSTALLATION, BOTH HOLES (b) MUST BE FACE TO FACE - REFER TO DETAIL B. 7) Install cam assembly (6) on shaft (7) with the rounded section directed to the left, oblong hole (under cam) perpendicular to the aircraft centerline. 8) Attach knob support (30) with washers (5) and (28) and bolts (4) and (29) and connect microswitch (3). 9) Install temporarily control knob (2) with the head directed to the left and perpendicular to the aircraft centerline. Attach it with screw (1). 10) Set the fuel selector to "LEFT" position and make sure gimbal joint (61) is to the central position with regard to its deflection then, install bolt (58),washer (59) and a new nut (60). 11) Lubricate gimbal joint (61) and cable (53) with grease (TB 04-004A). 12) Close main switch-breaker. 13) Check the control and the fuel selector indicator light on the advisory panel for operation : - when the fuel selector is set to "OFF", the indicator light must be ON. - when the fuel selector is set to "LEFT" or "RIGHT", the indicator light must be OFF. 14) Open main switch-breaker. 15) Remove screw (1) and control knob (2). 16) Make sure all the tools and materials are removed and the work area is clean and free from debris. 17) Install the rear cover of central control pedestal - refer to 25-14-00. ABAB Validity : S / N 731 - 9999 Page 402 28-20-04 (CA) SEP 02 18) Check handwheel (51) and elevator tab for correct deflection - refer to 27-30-00. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 28 FUEL TB20飞机维护手册 燃油(33) |
