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- Loctite (TB 08-013C) B. Removal of a fuel tank sealed inspection door (Figures 201 and 201A) WARNING : OBEY THE SAFETY PRECAUTIONS DESCRIBED IN 28-00-00. WARNING : APPLY THE FUEL TANKS MAINTENANCE PROCEDURE - REFER TO 28-00-00 PAGE 200. 1) Drain the fuel tanks - refer to 12-11-02. 2) Identify and mark the sealed inspection door (3) to be removed. NOTE : Aircraft S / N 823 - 849 and 888 : the portion of the fuel tank sealed inspection door coated with sealant is directed towards the wing root. 3) Remove screws (4) securing sealed inspection door (3) to wing lower surface. 4) Using a thin blade, separate sealed inspection door (3) from skin (5). CAUTION : EXERCISE CARE TO AVOID DAMAGING THE FUEL LEVEL GAGE DURING INSPECTION DOOR REMOVAL. 5) Tilt sealed inspection door (3) to remove it from the tank. C. Installation of a fuel tank sealed inspection door (Figures 201, 201A and 202) WARNING : OBEY THE SAFETY PRECAUTIONS DESCRIBED IN 28-00-00. WARNING : APPLY THE FUEL TANKS MAINTENANCE PROCEDURE - REFER TO 28-00-00 PAGE 200. 1) Remove the sealant from the seating surface of sealed inspection door (3) in the tank. Remove any sealant particles from inside the tank. 2) Remove sealant from sealed inspection door (3) and clean the seating surface of sealed inspection door (3) with cleaning agent (TB 11-914). WA Validity : S / N 1 - 9999 Pre-MOD. 162 52 _40_00 (BA) UN 0 Page 201 3) Make sure the threads of nuts (1) are free from sealant. Check nuts (1) for correct crimping, replace if necessary - refer to Paragraph 6. NOTE : Check the bead of sealant (TB 09-001 A) for condition at door nuts, apply a new bead if necessary. 4) Make sure all the tools and materials are removed and the work area is clean and free from debris. 5) Apply a coat of sealant (TB 09-019A) on the seating surface all around sealed inspection door (3). 6) Coat the threading of screws (4) with Loctite (TB 08-013C) - refer to 20-00-08. 7) Install sealed inspection door (3) and secure with screws (4). 8) Torque screws (4) according to the sequence specified on Figure 202. NOTE : Tightening the screws linearly, one after the other, could lead to sealed inspection door warping. This could result in a fuel leak. 9) Allow to dry. NOTE : In order to obtain the drying time of sealants, refer to technical notices. 10) Fill up the fuel tanks - refer to 12-11-01. 11) Check sealed inspection door (3) for tightness. D. Removal of a non-sealed inspection door 1) Identify and mark the door to be removed. 2) Remove the screws securing the non-sealed inspection door to wing lower surface. 3) Tilt the non-sealed inspection door to remove it. E. Installation of a non-sealed inspection door (Figure 203) 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 52 门 TB20飞机维护手册(11) |
