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A. Tools and consumable materials - 1 contact extraction tool, model HT 2285, P/N 11-03-0002 Molex B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL TANKS — REFER TO 28-00-00. 1) Drain the fuel tanks - refer to 12-11-02. 2) Remove the inspection door 511 [611] and the tight inspection door 513 [613] - refer to 52-40-00. 3) Remove sealant which covers the attachment assembly. 4) Through the inspection door 513 [613], unscrew and retain bolt (1) and washer (2). Remove cover (3). 5) Through the inspection door 511 [611], disconnect connector (4). 6) Using the extraction tool, disconnect both connector contacts (5) of the detector to be removed. 7) Remove and retain nut (6), spring washers (7) and washer (8). Discard spring washers (7). 8) Remove low level detector (10). Discard gasket (9). 9) Remove all sealant traces from the attachment area. 10) Make sure the tank is clean. Clean if necessary. 2. INSTALLATION OF THE LOW LEVEL DETECTOR (Figure 401) A. Tools and consumable materials - Torque wrench 0 - 177 lbf.in (0 - 20 N.m) - Sealant (TB 09-019A) B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL TANKS — REFER TO 28-00-00. 1) Remove all sealant traces from nut (6), washer (8) and low level detector (10). 2) Apply a slight layer of sealant (TB 09-019A) to the bearing face of new gasket (9) and low level detector (10). 3) Position gasket (9) on low level detector and engage low level detector into box (13). 4) Turn low level detector (10) so that float (11) deflects upwards. ralfity : S / N 1 - 9999 kdi 28 40 04Page 401 (BA) SEP 04 5) Install washer (8), new spring washers (7) and nut (6). 6) Torque - refer to 20-00-01. NOTE : Hold the detector with a wrench to prevent its rotation during tightening. 7) Check float (11) deflection. 8) Install cover (3), bolt (1) and washer (2). 9) Make sure all the tools and materials are removed and the work area is clean and free from debris. 10) Install the tight inspection door 513 [613] - refer to 52-40-00. 11) Fill the wing tank with about 19 US Gal (50 liters) of fuel. 12) Check the low level detector base and the tight inspection door 513 [613] for leaks. 13) Smear detector, washers and nut (6) with sealant (TB09-019A) and apply some to the rib. 14) Plug contacts (5) into connector (4). NOTE : Since the detector is a switch, the position of terminal "1" or terminal "2"contacts is not important. 15) Connect connector (4). 16) Make sure all the tools and materials are removed and the work area is clean and free from debris. 17) Close the inspection door 511 [611] - refer to 52-40-00. 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(53) |
