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move outboard slightly. This movement does these things:
* Compresses the door seals
* Unloads the door latch fittings
* Seats the door stop fittings and puts the door pressure loads
on them.
Door Stops - General Description
Each door stop fitting has these parts:
* An adjustable door-mounted pin with lockwire
* A buttressed frame-mounted pressure pad.
DOORS - PASSENGER/CREW - GUIDE, LATCH, AND STOP FITTINGS
EFFECTIVITY
GUN ALL 52-10-00
Page 13
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-10-00-004
When the airplane is unpressurized, there is a small clearance
between the door pins and frame pads. When the airplane is
pressurized, the door moves outboard slightly. This causes the
door pins to contact the frame pads. The pins transmit the
pressure loads from the door to the door frame.
DOORS - PASSENGER/CREW - GUIDE, LATCH, AND STOP FITTINGS
EFFECTIVITY
GUN ALL 52-10-00
Page 14
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-10-00-004
DOORS - PASSENGER/CREW - GUIDE, LATCH, AND STOP FITTINGS
DOORS - PASSENGER/CREW - GUIDE, LATCH, AND STOP FITTINGS
EFFECTIVITY
GUN ALL 52-10-00
Page 15
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-10-00-004
Purpose
The door torque tubes do these things:
* Give structural support to the door and hinges
* Give the door and hinges a pivotal axis
* Give the door cocking crank pushrod a structural reaction
member (door torque tube only)
* Give the assist springs a structural reaction member (frame
torque tube only).
Location
The door system has these two torque tubes:
* Door torque tube in the door
* Frame torque tube in the door frame.
To get access to the door torque tube, remove the door liner
and access panel.
To get access to the frame torque tube, remove the access
panel on the interior of the airplane between the upper and
lower hinges.
Door Torque Tube - General Description
The door torque tube has several short sections held together
by cross-bolt sleeves. The center section is held in the central
door casting bearings by two castle nuts. The ends of the torque
tube are cross-bolted to hinge pins. Hinge arm bearings hold
the hinge pins.
Frame Torque Tube - General Description
The frame torque tube has several short sections held together
by cross-bolt sleeves. The center section of the tube is held in
monoball frame bearings. The ends of the torque tube are
bolted to oval spigots. The spigot ovals mate with the hinge
arms.
Coil springs on the torque tubes wind up when the door moves
to the fully open or closed position. This does two things:
* Helps the operator begin to open or close the door
* Helps snub the door at the end of travel.
The spring load is neutral at an intermediate door position.
DOORS - PASSENGER/CREW - FORWARD ENTRY DOOR TORQUE TUBES
EFFECTIVITY
GUN ALL 52-10-00
Page 16
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-10-00-005
DOORS - PASSENGER/CREW - FORWARD ENTRY DOOR TORQUE TUBES
DOORS - PASSENGER/CREW - FORWARD ENTRY DOOR TORQUE TUBES
EFFECTIVITY
GUN ALL 52-10-00
Page 17
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
52-10-00-005
Purpose
The door torque tubes provide these functions:
* Structural support to the door and hinges
* Pivital axis for door and hinges
* Structural reaction member for the door cocking crank
pushrod (door torque tube only)
Location
The door system has these two torque tubes:
* Door torque tube in the door
* Frame torque tube in the door frame.
To get access to the door torque tube, remove the door liner
and access panel.
To get access to the frame torque tube, remove the access
panel on the exterior of the airplane between the upper and
lower hinges.
Door Torque Tube - General Description
The door torque tube has several short sections held together
by cross-bolt sleeves. The center section is held in the central
door casting bearings by two castle nuts. The ends of the torque
　
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