SHOCK STRUT
SHOCK STRUT FLOW FUSE
SHUTOFF SHOCK STRUT
VALVE OUTER
CYLINDER
SHOCK STRUT PRESSURE GAGE ASSEMBLY
SHOCK STRUT PRESSURE GAGE ASSEMBLY A
LOWER JURY STRUT
UPPER JURY STRUT
JURY STRUT
SPINDLE
BUNGEE
UPPER DRAG STRUT
DRAG STRUT (REF) SPINDLE
LOWER DRAG STRUT
DRAG STRUT COMPONENT ASSEMBLY
B
HYDRAULIC GUIDES (REF)
TRUCK
TRUCK SHIELD
SHIELD
C
Body Gear - Component Location (Details from Sht 1) Figure 102 (Sheet 2)
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A
747-400 FAULT ISOLATION/MAINT MANUAL
DRAG STRUT SPINDLE
UPPER DRAG
JURY STRUT
STRUT
SPINDLE
JURY
STRUT
LOWER
DRAG STRUT
DRAG STRUT SPINDLE ASSEMBLY D
DRAG STRUT SWIVEL
BODY GEAR DRAG STRUT
DRAG STRUT SWIVEL
E
SHOCK STRUT
SHOCK STRUT
DOOR ACTUATOR STRUT (REF)
DRAG STRUT UNIVERSAL
F
Body Gear - Component Location (Details from Sht 1)
Figure 102 (Sheet 3)
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A
747-400
FAULT ISOLATION/MAINT MANUAL
LEFT BODY GEAR WHEEL WELL
SEE G 1480 BULKHEAD
TRUCK POSITIONING PRESSURE REDUCING VALVE ASSEMBLY
SEE H
(LEFT SIDE SHOWN
RIGHT SIDE OPPOSITE)
(STATION 1480 BULKHEAD)
1480 BULKHEAD
TRUCK POSITIONING PRESSURE REDUCING VALVE
(RIGHT SIDE ONLY)
(LEFT SIDE
ONLY)
LEFT BODY GEAR WHEEL WELL
G
TRUCK POSITIONING PRESSURE REDUCING HIGH RESPONSE VALVE
TRUCK POSITIONING PRESSURE REDUCING VALVE ASSEMBLY H
Body Gear - Component Location Figure 102 (Sheet 4)
TRUCK POSITIONING SYSTEM HYDRAULIC FUSE
UP
FWD
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A
747-400 MAINTENANCE MANUAL
BODY LANDING GEAR - REMOVAL/INSTALLATION
________________________________________
1. General_______
A. This subject covers two tasks:
(1)
The removal of the body landing gear
(2)
The installation of the body landing gear.
B.
To remove the body landing gear the following operations are necessary:
(1)
Install landing gear ground lockpins
(2)
Install wing and body gear door locks
(3)
Remove pressure from hydraulic systems No. 1 and 4.
(4)
Release the air pressure from the shock strut and install retention tool
(5)
Jack the airplane
(6)
Remove the body gear truck positioning actuator
(7)
Install body gear vertical strut stabilizer
(8)
Provide support and restraint for various components
(9)
Disconnect shock strut wire bundle and hydraulic hoses
(10)
Disconnect shock strut inboard and outboard door struts from landing gear
(11)
Disconnect lower end of retract actuator
(12)
Install the bungee restraining tool
(13)
Disconnect drag strut universal from gear
(14)
Remove keel beam access panel
(15)
Remove the body landing gear.
C.
To install the body landing gear the following operations are necessary:
(1)
Do a check of the body gear trunnion supports for corrosion
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