(2)
Put plugs on the open hydraulic lines, and caps on the open ports.
S 034-015
(3)
Disconnect the four bolts and washers, and remove the antiskid shuttle valve module assembly from the support bracket.
S 494-014
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A
747-400
MAINTENANCE MANUAL
ANTISKID SHUTTLE VALVE MODULE FOR THE BODY GEAR
SEE A
FWD
SUPPORT
BRACKET
HYDRAULIC LINE (4 LOCATIONS) UNION (4 LOCATIONS)O-RINGHYDRAULIC (4 LOCATIONS)
O-RING
UNION
LINE O-RING
UNION HYDRAULIC ANTISKID
LINE SHUTTLE VALVE
MODULE
WASHER
(4 LOCATIONS)
BOLT (4 LOCATIONS)
PRESSURE COMPENSATED FLOW REGULATOR (4 LOCATIONS)
HYDRAULIC LINE (4 LOCATIONS)
ANTISKID SHUTTLE VALVE MODULE FOR THE BODY GEAR
A
Body Gear Antiskid Shuttle Valve Module
Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
ANTISKID SHUTTLE
VALVE MODULE FOR
THE WING GEAR
SEE B
ANTISKID SHUTTLE VALVE MODULE FOR THE WING GEAR
SEE B
FWD
HYDRAULIC LINE (4 LOCATIONS)
SUPPORT BRACKET UNION (4 LOCATIONS)
O-RING (4 LOCATIONS)
UNION
HYDRAULIC UNION O-RING O-RING LINE
O-RING (4 LOCATIONS)
LINE
HYDRAULIC ANTISKID SHUTTLE BACKUP RING (4 LOCATIONS)VALVE MODULE
O-RING (4 LOCATIONS) WASHER (4 LOCATIONS)
ADAPTER (4 LOCATIONS)
BOLT (4 LOCATIONS) HYDRAULIC LINE (4 LOCATIONS)
ANTISKID SHUTTLE VALVE MODULE FOR THE WING GEAR
B
Wing Gear Antiskid Shuttle Valve Module
Figure 401 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 034-016
(4)
For the antiskid shuttle valve module on the body gear, do these steps:
(a)
Remove the unions from the normal and alternate ports.
(b)
Remove the pressure compensated flow regulators from the brake ports, and discard the O-rings.
S 034-017
(5)
For the antiskid shuttle valve modules on the wing gear, do these steps:
(a)
Remove the unions from the normal and alternate ports, and the adapters from the brake ports.
(b)
Remove the O-rings and backup rings, and discard the O-rings.
TASK 32-42-14-414-008
3. Antiskid Shuttle Valve Module Assembly - Installation
_____________________________________________________
A. Consumable Materials
(1)
C00272 Hydraulic Fluid - BMS 3-11
B.
References
(1)
AMM 29-11-00/201, Main Hydrualic Supply System
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AMM 32-41-00/201, Hydrualic Brake System
(4)
AIPC 32-42-07-05
C.
Access
(1)
Location Zones
137 Body Landing Gear Well - Left (Aft Bulkhead, Body Gear Wheel Well) Antiskid Shuttle Valve Assembly - Left Body Gear
138 Body Landing Gear Well - Right (Aft Bulkhead, Body Gear Wheel Well) Antiskid Shuttle Valve Assembly - Right Body Gear
571 Rear Spar to Landing Gear Support Beam, LH (above the wing gear trunion) Antiskid Shuttle Valve Assembly - Left Wing Gear
671 Rear Spar to Landing Gear Support Beam, RH (above the wing gear trunion) Antiskid Shuttle Valve Assembly - Right Wing Gear
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