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Page 401 24-30-01 (DA) OCT 02 WARNING : PRIOR TO ANY OPERATION, ENSURE THAT THE KEY IS REMOVED FROM MAGNETO SELECTOR AND THAT "MAIN SWITCH" IS OFF. IF AIRCRAFT IS EQUIPPED WITH DISCONNECT PLUG ON FIREWALL, DISCONNECT "MAGNETO DISCONNECT" PLUG AND CONNECT IT TO "GROUND MAGNETO FOR SERVICING" PLUG. 1) If removed, install the pulley and the fan - refer to Paragraph 4. 2) Inspect and, if necessary, replace cooling air hose (16) and its clamp (17), belt (4) and the boots protecting electrical attachments. NOTE : If a new cooling air hose (16) is to be installed, no traces of release grease (silicone) must remain inside the hose. Any traces must be removed with a dry cloth. 3) Position alternator (10), install both bolts (5), washers (6) and nuts (7). Do not tighten. 4) Position belt (4). 5) Position washer (1) and bolt (2), push on alternator (10) to tension belt (4) and tighten bolt (2). 6) Check and, if necessary, adjust the tension of belt (4) - refer to Page 501. 7) Lockwire bolt (2). 8) Tighten nuts (7) and install new cotter pins (8). CAUTION : WHEN CONNECTING THE ELECTRICAL WIRINGS, MAKE SURE THEY ARE CORRECTLY DIRECTED TO AVOID TIGHT BENDS AT THE LEVEL OF THE LUGS. 9) Connect the wires of alternator (10) and noise filter (12), apply varnish (TB 07-901) on electrical connections. S / N 1 - 400 10) Secure noise filter (12) with bolt (15), washer (14) and nut (13). Attach the wire to alternator (10) using a new tie-wrap (11). S / N 1 - 9999 11) Connect cooling air hose (16) to alternator (10) with clamp (17). 12) Make sure all the tools and materials are removed and the work area is clean and free from debris. 13) Install the engine cowlings - refer to 71-10-01. 14) Perform a test run-up - refer to 05-30-02 and check the alternator for correct operation. 3. DISASSEMBLY OF THE PULLEY (Figures 402 and 402A) A. Tools and consumable materials None B. Procedure 1) Remove alternator (5) - refer to Paragraph 1. 2) Immobilize pulley (3). 3) Remove nut (2) and lockwasher (1). Discard lockwasher (1). 4) Remove pulley (3), plate (7), fan (6), spacer (4) and woodruff key (8). 4. ASSEMBLY OF THE PULLEY (Figures 402 and 402A) A. Tools and consumable materials - Torque wrench 0 to 550 lbf.in (0 to 60 N.m) B. Procedure 1) Check for cracks on fan (6), plate (7) and pulley (3). 2) Position spacer (4) on alternator (5) shaft. S / N 401 - 9999 CAUTION : MAKE SURE FAN (6) IS CORRECTLY POSITIONED. 3) Position fan (6) on alternator (5) shaft, the blades directed towards the alternator. 4) Install plate (7). S / N 1 - 9999 5) Install woodruff key (8). 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 24 COMMUNICATIONS TB20飞机维护手册 电源(27) |
