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D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-10-00-002
CAUTION: YOU MUST BE VERY CAREFUL NOT TO CAUSE
DAMAGE TO THE INNER CYLINDER. NICKS OR
SCRATCHES ON THE INNER CYLINDER WILL
CAUSE DAMAGE TO THE CENTERING CAM AND
THE SEALS. THIS DAMAGE WILL OCCUR AS THE
SEALS MOVE OVER THE DAMAGED SURFACE OF
THE INNER CYLINDER.
CAUTION: HAVE EQUIPMENT OR PERSONNEL READY TO
SUPPORT THE WEIGHT OF THE INNER CYLINDER
AS THE CYLINDER COMES OUT. THE INNER
CYLINDER CAN BE DAMAGED IF YOU DROP IT.
CAUTION: THE GLAND NUT AND THE OUTER CYLINDER
MAY HAVE BEEN REWORKED (OVERSIZE). MAKE
SURE YOU IDENTIFY THEM AS REWORKED
(OVERSIZE) AND KEPT AS A SET.
CAUTION: DO NOT APPLY VASELINE OR PETROLATUM TO
THE SEALS BECAUSE THIS CAN CAUSE TOO
MUCH SWELLING OF THE SEAL MATERIAL.
NOTE: Make sure your hands are clean when you handle the
elastomer seals. Some greases can cause the
elastomer seals to swell too much. This can cause
the seals to leak.
MAIN LANDING GEAR AND DOORS - SHOCK STRUT SEALS
EFFECTIVITY
GUN ALL 32-10-00
Page 8
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-10-00-002
MAIN LANDING GEAR AND DOORS - SHOCK STRUT SEALS
MAIN LANDING GEAR AND DOORS - SHOCK STRUT SEALS
EFFECTIVITY
GUN ALL 32-10-00
Page 9
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-10-00-002
THIS PAGE IS INTENTIONALLY LEFT BLANK
MAIN LANDING GEAR AND DOORS - SHOCK STRUT SEALS
32-10-00
Page 10
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
General
The MLG shock strut doors open to let the main landing gear
extend and they aerodynamically seal the opening in the lower
surface of the wing and the wing-to-body fairing when the main
landing gear retracts.
The main landing gear doors have these components:
* Outer door
* Center door
* Inner door.
Location
The outer door connects by a hinge to the airplane wing
structure along the upper edge of the door.
The center door connects to the shock strut by two adjustable tie
rods at the top and brackets at the bottom.
The inner door connects by a hinge to the bottom of the center
door.
Physical Description
The main landing gear doors are made of aluminum alloy
materials.
Functional Description
The outer door connects to an adjustable pushrod that also
connects to the shock strut trunnion. As the gear retracts (or
extends), the trunnion pulls (or pushes) the pushrod and seals
the outer door against the wing opening.
The center door connects to the shock strut and does not move.
Tie rods at the top allow for adjustment.
The inner door connects to an adjustable pushrod that also
connects to the lower side strut. As the gear retracts (or
extends), the side strut pulls (or pushes) the pushrod and seals
the inner door against the wheel well opening and main landing
gear tire.
Training Information Point
Be careful when you operate the landing gear during door
adjustments.
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT
ARE CLEAR OF THE RETRACTION PATH FOR THE
APPLICABLE MAIN LANDING GEAR. INJURY TO
PERSONS OR DAMAGE TO EQUIPMENT CAN
OCCUR IF THE AREA IS NOT CLEAR.
NOTE: A change in the adjustment of the center door can have
an effect on the adjustment of the outer door.
MAIN LANDING GEAR AND DOORS - MAIN LANDING GEAR DOORS
EFFECTIVITY
GUN ALL 32-10-00
Page 11
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-10-00-003
Be careful when you move around the inner door. The sharp
point on the inner door can cause injury to persons.
CAUTION: MAKE SURE THAT THE STRUT DOORS ARE
CLEAR OF THE WING PANELS BEFORE YOU
FULLY RETRACT THE GEAR. THE STRUT DOORS
CAN CAUSE DAMAGE TO THE WING PANELS IF
THE DOORS ARE NOT CLEAR.
MAIN LANDING GEAR AND DOORS - MAIN LANDING GEAR DOORS
EFFECTIVITY
GUN ALL 32-10-00
Page 12
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
32-10-00-003
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