ALTERNATE ANTISKID MODULE ASSEMBLY F
Brake Control System - Component Location Figure 102 (Sheet 4)
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FAULT ISOLATION/MAINT MANUAL

L WING GEAR
SEE G

ANTISKID SHUTTLE VALVE ASSEMBLY
SEE H SHT 6
R WING GEAR SEE G
PRESSURE COMPENSATED FLOW REGULATOR (4 LOCATIONS) ANTISKID SHUTTLE VALVE MODULE ASSEMBLY
SEE H SHT 6
FWD INBD
L OR R WING GEAR G
Brake Control System - Component Location
Figure 102 (Sheet 5)

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747-400
FAULT ISOLATION/MAINT MANUAL

NORMAL ANTISKID
HYDRAULIC INPUT
SUPPORT LINES (4 LOCATIONS)
BRACKET

ALTERNATE ANTISKID HYDRAULIC INPUT LINES (2 LOCATIONS) ANTISKID SHUTTLE
(REF) VALVE ASSEMBLY
ANTISKID SHUTTLE
VALVE ASSEMBLY

SEE I
PRESSURE
BRAKE PRESSURE COMPENSATEDLINES (4 LOCATIONS) FLOW REGULATORS(REF) (4 LOCATIONS BODY GEAR ONLY)
ANTISKID SHUTTLE VALVE ASSEMBLY
H FROM SHT 5

ANTISKID SHUTTLE VALVE (4 LOCATIONS) ANTISKID SHUTTLE VALVE ASSEMBLY
FILTER (4 LOCATIONS)
I
Brake Control System - Component Location
Figure 102 (Sheet 6)

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747-400 FAULT ISOLATION/MAINT MANUAL
AUTOBRAKE PRESSURE CONTROL MODULE
SEE J
SYSTEM 4 RETURN LINE (REF)
SOLENOID VALVE PRESSURE SWITCH, YCJS01
SERVO CONTROL SYSTEM 4
VALVE, YCJV02 PRESSURE (REF)
SOLENOID VALVE,
YCJV01

BRAKE PRESSURE
LINE (REF)

INLET FILTER
AUTOBRAKE PRESSURE CONTROL MODULE, M439 J
Brake Control System - Component Location
Figure 102 (Sheet 7)

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AUTOBRAKE SHUTTLE VALVE
SEE K
METERED PRESSURE LINE (REF)
BRAKE L OR R PRESSUREHYDRAULIC SWITCH, S281PRESSURE LINE (REF) OR S280
SHUTTLE AUTOBRAKE
VALVE HYDRAULIC PRESSURE LINE (REF)
NOTE: LH AUTOBRAKE SHUTTLE VALVE SHOWN
AUTOBRAKE SHUTTLE VALVE
RH SIMILAR.
K
Brake Control System - Component Location Figure 102 (Sheet 8)
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747-400 FAULT ISOLATION/MAINT MANUAL
UPPER DECK FLOOR (REF)
NO. 1 ENTRY DOOR
BRAKE PEDAL 
BUS SWITCH 
SEE  L 
BRAKE-PEDAL-BUS 
LEVER ARM 
(REF) 

SUPPORT BEAM (REF)
L OR R BRAKE-PEDAL-BUS SWITCH, S1595 OR S1596
BRAKE PEDAL BUS SWITCH LEFT SIDE SHOWN, RIGHT SIDE SIMILAR
L
Brake Control System - Component Location Figure 102 (Sheet 9)
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