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15) Slightly lubricate flexible control assy (10) sheath with oil (TB 03-900A) over as much of its length as possible. NOTE : This eases the sliding of the control through grommets (11), (21) and (24) and clamps (13). 16) Pull flexible control assy (10) from the rudder and make sure grommets (11), (21) and (24) have not moved. 17) Detach lockwire from the control (and leave it in place for reinstallation). 18) If flexible control assy (10) must be replaced, perform the following operations : a) Clear lockwasher (34) tab, remove yoke (35), lockwasher (34) and jam nut (33) ; discard lockwasher (34). b) Loosen jam nut (29) ; remove cage (30), split bush (31) and jam nut (29). c) Remove nut (28), washers (27), retaining washers (26) and screw in nut (28). d) Screw nuts (9) and (18) onto the control. C. Installation of rudder trim tab control (Figures 201 and 202) 1) Lubricate the inside of flexible control assy (10) with oil (TB 03-900A). 2) Lubricate the threads of flexible control assy (10) and control rear section (32), bolt (36), lever (37), cage (30) and split bush (31) with grease (TB 04-004A). 3) If flexible control assy (10) has been replaced, perform the following operations : a) Remove nuts (9), (18) and (28). b) On control rear section (32), insert washer (27), both retaining washers (26), washer (27) and screw nut (28). c) Install jam nut (29), split bush (31) and cage (30) ; fully screw the cage and lock jam nut (29). d) Install jam nut (33), new lockwasher (34) and yoke (35) ; do not fold down lockwasher tab. 4) Attach the lockwire left in position to the control front end. 5) Slightly lubricate flexible control assy (10) sheath with oil (TB 03-900A) over its whole length. 6) Insert the control through grommets (24), (21) and (11) and clamps (13) ; discard lockwire. 7) Lubricate bolt assy (6) and rack (8) with grease (TB 04-004A). 8) Install nut (9) on the control, then insert housing (7) and screw nut (18) until the control abuts against housing (7). NOTE : To insert housing (7), the control must be pulled forward or backward depending on support (4) type. 9) Lock nut (9) on housing (7). 10) Fully screw rack (8) onto the control, then unscrew to direct the teeth towards housing (7) inside. 11) Push rack (8) so that four teeth protrude from housing (7). 12) With two bolts (2), pin stop (3) onto housing (7), then insert bolt assy (6) by positioning spring pin (5) in contact with stop (3) rear section. 13) Install washer (19) and retaining ring (20). 14) Remove bolts (2) and stop (3) ; move the control forward or backward depending on support (4) type, then insert bolt assy (6) in its housing. 15) Install stop (3) on support (4) while interposing two washers and secure housing (7) with bolts (2), washers (23) and new nuts (22). AMA 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(24) |
