Body Gear Drag Strut Component Assembly Wear Limits
Figure 601 (Sheet 3)
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A
747-400 MAINTENANCE MANUAL
BODY GEAR TRUCK POSITIONING SYSTEM HYDRAULIC FUSE -
___________________________________________________ REMOVAL/INSTALLATION
____________________
1. General
_______
A. The hydraulic fuse decreases the fluid leak if a pressure leak starts in the positioning system downstream of the fuse. If a pressure leak starts in the system, set the hydraulic fuse again.
B. This procedure has two tasks:
(1)
The removal of the hydraulic fuse for the positioning system.
(2)
The installation of the hydraulic fuse for the positioning system.
TASK 32-13-24-004-001
2. The Body Gear Truck Positioning System Hydraulic Fuse Removal (Fig. 401)
_____________________________________________________________
A. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AIPC 32-13-24 Fig. 1
(5)
AIPC 32-13-67 Fig. 1
B.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
C.
Prepare for the Removal
S 864-031
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 494-032
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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).
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A
747-400
MAINTENANCE MANUAL
HYDRAULIC
FUSE
RIGHT
SIDE
ONLY TRUCK
POSITIONING
PRESSURE
REDUCING
VALVE
LEFT SIDE
ONLY
FWD
UP
(LEFT SIDE SHOWN
FWD RIGHT SIDE OPPOSITE)
(STATION 1480 BULKHEAD)
Fuse Installation
Figure 401
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747-400 MAINTENANCE MANUAL
S 494-033
(3)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 844-005
(4)
Remove the hydraulic No. 1 power (AMM 29-11-00/201).
S 844-006
WARNING: DECREASE THE PRESSURE ON THE ACTUATOR AND THE LINES BEFORE YOU
_______ DISCONNECT THE LINES TO THE PRESSURE REDUCING VALVE. THIS WILL PREVENT INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(5)
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