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b) Locate the middle of the cable and position the cable at this level in the front groove of the reel. c) 1st operator : hold the R.H. side of the cable ("L.H. threaded" end fitting). d) 2nd operator : take the L.H. side of the cable ("R.H. threaded" end fitting) and route it externally, then backward into L.H. side notch ; wind the cable (stretched tight) backward round the reel by 3 complete turns - see NOTE hereafter - up to the rear position and hold it in place, still stretched tight. e) 1st operator : engage the cable ("L.H. threaded" side) into R.H. side groove by backward winding ; at groove outlet, pass the cable (stretched tight) again into the pulley, perform 3 complete (clockwise) turns - see NOTE hereafter - up to the rear position and hold it in place, still stretched tight. NOTE : Cable turns on reels must be as snug as possible and must never overlap. f) Keep both cable ends stretched tight and block them in position using cable clamp (52) - see Figure 404 - located as close as possible to the reel. 2) Install front cable - refer to Paragraph D. I. Installation of rear cable (Figures 401,402,403,404 and 405) NOTE : . Two operators are required to perform these operations. . Cable "L.H. threaded" end fittings are identified by side notches on the 6 flats of the hexagonal nuts. . Inspect cables and pulleys for condition - refer to 20-00-07. . Lubricate the cables in the winding area with grease (TB 04-004A). NOTE : As spares, matching of actuator rod (51) and of rear reel (54) is imperative to ensure interchangeability and accurate travel. 1) Wind rear cable (39) [Length 10.32 ft (3148 mm)] round rear reel (54) - see Figure 405, Detail E. a) Position the reel as illustrated in Detail E, Figure 405, between the jaws of a vice (protected jaws) at moderate clamping pressure. b) Locate the middle of the cable and position the cable at this level in the rear groove of the reel. c) 1st operator : hold the cable on the L.H. side in the groove. d) 2nd operator : take the R.H. side of the cable and route it externally forward, then into R.H. lower notch ; wind the cable (stretched tight) forward round the reel by 6 complete turns - see NOTE hereafter - up to the front position and hold it in place, still stretched tight. e) 1st operator : at rear groove outlet, engage the cable externally on the L.H. side, going forward into L.H. upper side groove ; wind the cable (stretched tight) forward around the reel by 6 complete turns - see NOTE hereafter - up to the front position and hold it in place, still stretched tight. NOTE : Cable turns on reels must be as snug as possible and must never overlap. ACAC Validity : S / N 1 - 9999 Page 405 27-30-03 (CA) SEP 02 f) Keep both cable ends stretched tight and block them in position using cable clamp (52) - see Figure 404 - located as close as possible to the reel. 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(43) |
