S 092-065
(2)
Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).
TASK 32-11-02-202-073
7. Wing Landing Gear Shock Strut Seal Leak Inspection__________________________________________________
A. General
(1) This task gives the instructions to make sure a shock strut is serviceable when you find fluid leakage on the inner cylinder.
NOTE: During the initial landing cycles of a new landing gear, thin
____ dark olive-green streaks on the shock strut frequently occur. This condition is okay. The petrolatum and grease that we use during shock strut assembly cause these streaks. These streaks will stop after more landing cycles occur. These streaks are different from the red color streaks that are the indication of strut fluid leakage.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
B. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 12-15-03/301, Wing Landing Gear Shock Strut
(3)
AMM 32-00-30/201, Landing Gear Door Locks
C.
Access
(1)
Location Zone
735 Wing Landing Gear, LH
745 Wing Landing Gear, RH
D.
Prepare for the Procedure
S 492-074
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Install the ground locks in all landing gear (AMM 09-11-00/201).
S 492-075
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Do this task: "Installation of the Door locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 492-082
(3)
Do this task: "Installation of the Door locks on the Body Landing Gear" (AMM 32-00-30/201).
E.
Procedure
S 222-115
CAUTION: MAKE SURE THAT YOU DO NOT MOVE OR DAMAGE THE WING GEAR TRUCK
_______ SENSORS OR TARGET BRACKET. IF THE TARGET BRACKET OR SENSORS ARE MOVED, THEN THE AIRPLANE SYSTEMS MAY NOT RECOGNIZE AN IN-AIR CONDITION.
(1) If the sensor or target bracket is moved or damaged, then do the task to measure the wing landing gear truck sensor clearance (AMM 32-61-22/201).
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A
747-400 MAINTENANCE MANUAL
S 612-076
(2)
Do this task: "Shock Strut Servicing Fast Check (AMM 12-15-03/301).
S 212-092
(3)
Inspect the shock struts for leakage.
S 212-077
(4)
If you find leakage of the shock strut fluid on the inner cylinder, make sure the shock strut is serviceable:
(a)
Wipe the surface of the inner cylinder with a clean cloth to remove all of the fluid from the leak.
(b)
Monitor the inner cylinder where it meets with the outer cylinder for 15 minutes.
NOTE: If you do not find leakage on the inner cylinder, then
____ the shock strut is serviceable. If the leakage flows continuously from the seals, then the shock strut is not serviceable.
1) Make sure the extension of the inner cylinder does not change during this time. 2) Make a record of the number of drops which come from the
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