(h)
Open the shutoff valve (9) with a 3/16-inch hex wrench.
(i)
Use the hydraulic fluid from the hydraulic fluid line to flush the flow fuse. 1) Make sure you have something to contain the hydraulic fluid
when it comes through the air valve. 2) Fill the shock strut until a minimum of one quart of fluid with no bubbles comes through the air valve.
NOTE: Part of the time, you must fill the strut at the
____
highest possible rate to fully flush the flow fuse.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-02
ALL ú ú 01 Page 213 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 872-104
(8)
Let all air bubbles out of the shock strut through the air valve.
S 432-105
(9)
Install the pressure cap on the oil fill valve (4).
S 862-109
(10)
Pressurize the shock strut with nitrogen or dry air (Ref 12-15-04/301).
G.
Put the Airplane Back to its Usual Condition
S 092-106
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO REMOVE
_______ THE DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this task: "Removal of the Door Locks from the Wing Landing Gear" (Ref 32-00-30/201).
S 092-107
(2)
Do this task: "Removal of the Door Locks from the Body Landing Gear" (Ref 32-00-30/201).
TASK 32-13-02-202-112
7. Body 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.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-13-02
ALL ú ú 01 Page 214 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
B. References
(1)
09-11-00/201, Towing
(2)
12-15-04/301, Body Landing Gear Shock Strut
(3)
32-00-30/201, Landing Gear Door Locks
C.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
D.
Prepare for the Procedure
S 492-121
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 (Ref 09-11-00/201).
S 492-120
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" (Ref 32-00-30/201).
S 492-119
(3)
Do this task: "Installation of the Door locks on the Body Landing Gear" (Ref 32-00-30/201).
E.
Procedure
(1)
Do this task: "Shock Strut Servicing Fast Check (Ref 12-15-04/301).
S 612-118
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