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 S 424-003
 (8)  To install the surge tank access door 543AB or 643AB, do the steps
 that follow:
 WARNING: BE CAREFUL WHEN YOU INSTALL THE PRESSURE RELIEF VALVE. IF_______
 YOU ARE NOT CAREFUL, INJURY TO PERSONS COULD OCCUR IF THE
 PRESSURE RELIEF VALVE OPENS ACCIDENTALLY.
 (a) Install the pressure relief valve on the surge tank access door
 (AMM 28-13-04/201).
 (b) Make sure the seal surfaces on the surge tank access door and
 the lower wing surface are clean (View B).
 (c) Make sure the molded rubber seal in the surge tank access door
 is clean and not damaged.
 (d) Put the surge tank access door in the opening of the surge
 tank.
 (e) Put and hold the gasket and the clamp ring in the opening.
 ú  (f) Make sure the clamp ring has an equal gap around the edges of
 ú  the access door and the lower surface of the wing.
 (g) Install the mounting bolts.
 (h) Start at the centerline and tighten the mounting bolts to 30-40
 pound-inches equally in each direction.
 S 424-010
 (9)  To install the surge tank access door 543BB or 643BB, do the steps
 that follow.
 (a) Install the housing of the vent flame arrestor on the surge
 tank access door (AMM 28-13-05/401).
 (b) Install a new O-ring in the groove on the surge tank access
 door (View C).
 (c) Put a rubber seal on the inner surface of the surge tank access
 door such that the bolt holes align.
 (d) Align the surge tank access door with the nutplate in the
 opening on the lower wing surface.
 (e) Install the mounting bolts on the surge tank access door.
 (f) Tighten the mounting bolts to 30-40 pound-inches.

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 28-11-03
 ALL  ú ú 01.1 Page 408 ú Sep 28/02

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757
MAINTENANCE MANUAL

 S 944-014
 WARNING: MAKE SURE YOU INSTALL THE SURGE TANK ACCESS DOORS CORRECTLY.
_______ FUEL CAN ENTER THE SURGE TANKS DURING SOME GROUND OR FLIGHT MANEUVERS. IF THE SURGE TANK ACCESS DOOR(S) ARE NOT INSTALLED CORRECTLY AN OVERBOARD FUEL SPILL CAN OCCUR. AN OVERBOARD FUEL SPILL IS A FIRE HAZARD.
 (10)
 Use one of these methods to do a check of the surge tank access door installation:

 (a)  
Do a visual check to make sure the access door installation is fluid tight.

 (b)  
Do a fuel leak check for the surge tank access doors. 1) Do this task: Overfill Shutoff Test (AMM 28-21-00/501).
　
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