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None 2. REMOVAL / INSTALLATION - ACCESS DOOR (Figure 201) A. Tools and consumable materials - Sealant (TB 09-900) and (TB 09-909) - Loctite (TB 08-013C) B. Removal of the access door 1) Keep the door open, remove and discard retaining washer (3), remove pin (4). 2) Disconnect balancing rod (1) from the door. 3) Close the door to remove door hinge pin (2) a) Hinge pin safetied with a pin, remove the pin. b) Hinge pin with a knurled end. This end is identified by its center point - see Detail. 4) Using a pin drift or a pin of a diameter less than 0.197 in (5 mm), remove hinge pin (2) by pushing on the plain end while holding the door. 5) Clear the door. C. Installation of the access door 1) Position the door locking handles to "CLOSED". 2) Tighten adjustment screw (11) until the screw head is flush with hook (5). 3) Position the door in the hinge secured to the upper fuselage panel. CAUTION : EXERCISE CARE TO AVOID DAMAGING THE HOOKS LOCATED AT THE BOTTOM OF THE DOOR 4) Engage hinge pin (2), plain end first, proceeding from the front, until it is flush with the hinge. NOTE : The knurled end of the hinge pin must be directed towards aircraft nose. 5) Lift the door and hold it in position. 6) Install balancing rod (1). 7) Insert pin (4) and a new retaining washer (3). 8) Fold down the door to check the gap required all around the door : no less than 0.08 in (2 mm). Adjust if necessary. 9) Touch up paint as required. 10) Bond the door seal. NOTE : If the door has been replaced, a new upper fuselage panel seal must be installed. 11) After touching up paint, coat the external periphery of the window with a bead of sealant (TB 09-900) or (TB 09-909). 12) Adjust hook (5) - refer to Paragraph 3. 3. ADJUSTMENT / TEST - ACCESS DOOR (Figure 201) A. Tools and consumable materials None B. Adjustment of access door 1) Tension adjustment of doors is achieved at screws (6) by adding or removing washers (7). 2) Adjustment of hook (5) is performed by means of adjustment screw (11). NOTE : The hook centerline must be at equal distances from stop (10) and ring (8). a) An adjustment of the hook must be systematically performed after an adjustment of the door tension. b) If adjustment screw (11) is not self-locked (polyamide plastic deposit), safety it with Loctite (TB 08-013C) after each adjustment. 4. INSPECTION / CHECK - ACCESS DOOR (Figure 202) A. Tools and consumable materials None B. Inspection / check of stop adjustment 1) If the door bottom, when the door is locked, is not misaligned with the cabin spar, adjustment is correct. Do not modify. 2) If a deviation greater than 0.06 in (1.5 mm) (external deviation) or greater than 0.02 in (0.5 mm) (internal deviation) is found, proceed as follows : 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(5) |
