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D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-010
Fire Resistant Liner and Insulation
The inner surface of the door is fire resistant. The inside surface
is covered with an insulating blanket and a titanium fire wall
liner.
Operation
To open the APU access door, do these steps:
* Push the latch trigger buttons to open the latches. This
causes the latches to release and the latch handles to come
out of fair with the door skin. This disengages the latch hooks
and their door frame fittings. Hold the door while you pull on
the latch handles.
* Lower the door manually to the open position.
* Secure the door in the open position with the door support
rods.
To close the door, do these steps:
* Return the door support rods to their stowed position.
* Move the door to the closed position.
* Use the latch handles to mate the latch hooks with their door
frame fittings.
* Push the latch handles to fair with the door skin. This
secures the latches. Only hand pressure is required to close
the latches.
DOORS - SERVICE - AUXILLIARY POWER UNIT COWL DOOR
EFFECTIVITY
GUN ALL 52-40-00
Page 20
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-010
DOORS - SERVICE - AUXILLIARY POWER UNIT COWL DOOR
DOORS - SERVICE - AUXILLIARY POWER UNIT COWL DOOR
EFFECTIVITY
GUN ALL 52-40-00
Page 21
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-010
Purpose
The refueling station access door does these things:
* Gives access to the wing pressure fueling manifold and the
P15 fueling panel
* Enables the P15 fueling panel controls and indications
* Controls the refueling station access door flood lights.
Location
The refueling station access door is on the leading edge of the
right wing, outboard of the engine.
General Description
The refueling station access door hinges on its forward edge. It
is held closed by four push-button latches on its aft edge. It
swings downward and is held in the fully open position by a
latching telescopic rod. You must release the catch on the rod
before you close the door.
See the the fuel chapter for more information on fueling
indication and control. (CHAPTER 28)
Operational Displays
When the refueling station access door opens, the flood lights
on the door come on.
When it is open, the refueling station access door enables the
fuel quantity control switches and indications.
Training Information Point
The grounding jack is near the pressure refueling receptacle.
The service interphone jack is near the door hold open rod. The
two jacks are similar. Do not use the interphone jack as a
grounding device.
Make sure the refueling station access door is closed and
secure before flight. Damage to equipment can occur if the door
is open.
DOORS - SERVICE - REFUELING STATION ACCESS DOOR
EFFECTIVITY
GUN ALL 52-40-00
Page 22
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-030
DOORS - SERVICE - REFUELING STATION ACCESS DOOR
DOORS - SERVICE - REFUELING STATION ACCESS DOOR
EFFECTIVITY
GUN ALL 52-40-00
Page 23
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-40-00-030
Purpose
The ram air access panels give access to the air conditioning
ram air ducts.
Location
The ram air access panels are part of the wing-to-body fairing
under the airplane wings.
General Description
There are two ram air systems. Each has an access panel. The
ram air duct compartments are unpressurized.
Door Structure
The panels are composite construction.
Operation
To open the ram air access panels, you remove them. Restrain
the panel as you release the quarter turn fasteners.
Training Information Point
You must remove the ram air access panels to get access to the
ram air inlet duct. Access panels on the ram air inlet duct let you
clear debris ingested by the ram air system. Ram air debris
inhibits the performance of the ram air system and can cause
pack trip offs.
The ram air access panels do not give access to the air
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