B.
Access
(1)
Location Zone
137A Body Landing Gear Wheel Well, LH
C.
Procedure
S 494-027
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.
(1) Do this task: Body Landing Gear Door Lock Installation (AMM 32-00-30/201).
S 494-028
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Install the ground locks in all landing gear (AMM 09-11-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
FILL TUBE FOR FILL TUBE FOR THE HYDRAULIC THE HYDRAULIC SYSTEM NO. 1 SYSTEM NO. 2
FILL TUBE FOR THE HYDRAULIC
FILL TUBE FOR SYSTEM NO. 3
THE HYDRAULIC SYSTEM NO. 4
TUBE FAIRLEAD
SELECTOR
OUTLET TUBE VALVE
FROM THE
HAND PUMP
SEE A SWITCH
ELECTRICAL
CONNECTOR VALVE PORT (4)
VALVE PORT (3) VALVE PORT (2)FWD
VALVE PORT SELECTOR VALVE
VALVE
BRACKET NUT WASHER BOLT (4 LOCATIONS)
VALVE PORT (1)
SELECTOR VALVE
A
Selector Valve Installation Figure 401
L57732
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-029
(3)
Open this circuit breaker and attach a DO-NOT-CLOSE tag:
(a)
P7 Overhead Circuit Breaker Panel 1) 7G4 HYDRAULICS FLUID QTY
S 034-006
(4)
Disconnect the electrical connector from the selector valve.
S 034-007
(5)
Disconnect all of the tubes from the selector valve.
S 034-030
(6)
Remove the four bolts which attach the selector valve to the bracket.
S 024-031
(7)
Remove the selector valve from the bracket.
S 034-009
(8)
Install caps on all of the open tubes to keep out contamination.
S 034-032
(9)
Remove the fittings from the ports of the selector valve.
S 034-033
(10)
Remove the O-rings from the fittings.
(a)
Discard the old O-rings.
TASK 29-18-02-404-010
3. Selector Valve Installation (Fig. 401)___________________________
A. Consumable Materials
(1)
D00153 Fluid - Hydraulic, Fire-Resistant, BMS 3-11.
B.
References
(1)
AMM 12-12-01/301, Hydraulic Systems
(2)
AMM 20-22-01/601, Electrical Bonds and Grounds
(3)
AMM 24-22-00/201, Manual Control
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A
747-400
MAINTENANCE MANUAL
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 32-00-30/201, Landing Gear Door Locks
(6)
AMM 36-00-00/201, Pneumatic System
(7)
IPC 29-18-02 Fig. 1
C.
Access
(1)
Location Zone
137A Body Landing Gear Wheel Well, LH
D.
Procedure
S 644-011
(1)
Apply hydraulic fluid to the O-rings and threads of the fittings.
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