S 724-017
(4)
Do a test on the pressure control module of the autobrake.
(a)
Pressurize hydraulic system B (AMM 29-15-00/201).
(b)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel: 1) All the circuit breakers of the antiskid system 2) All the circuit breakers of the landing gear system
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737-300/400/500MAINTENANCE MANUAL
3) AUTOBRAKE CONTR
4) AUTO SPEED BRAKE
(c) Put the ANTISKID switch on the P2 panel to the ON position.
(d) Open these circuit breakers on the P6 panel:
1) AUTOSLAT NO. 1 AC (On airplanes with the Digital Stall
Warning and Autoslat Computers)
2) AUTOSLAT NO. 1 DC
3) AUTOSLAT NO. 2 AC (On airplanes with the Digital Stall
Warning and Autoslat Computers)
4) AUTOSLAT NO. 2 DC
(e) Push and hold the ABS button on the front of the antiskid
module (E3-2 shelf).
NOTE: If the steps that follow are not done in the____
specified time limit, the system will disarm. If the
system disarms, the test must be started with this step.
(f) Put the AUTO BRAKE selector switch at position 1.
(g) In 15 seconds of the above steps, put the automatic speed brake
handle to the ARMED position.
(h) In 15 seconds of the above step, put the automatic speed brake
handle to the DOWN (stowed) position.
(i) In 15 seconds of the above step, move the two throttles
forward.
(j) In 15 seconds of the above step, move the two throttles back.
(k) After 57 seconds of the above step, make sure the ABS LED (on
the antiskid module) and the AUTO BRAKE DISARM light (on the
P2-2 panel) flash.
(l) Release the ABS button on the front of the antiskid module.
(m) After 5 seconds, lightly push the right brake pedal and make
sure the AUTO BRAKE DISARM light comes on continuously.
(n) Do a check on the hydraulic connections to the module for
leaks.
(o) Put the AUTOBRAKE selector switch to the OFF position.
(p) Set the parking brake.
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A 737-300/400/500MAINTENANCE MANUAL
AUTOBRAKE
CONTROL
OVERHEAD MODULE
FLOW FLOW
FUSE SEE A FUSE
ACCUMULATOR ALT BRAKE
ISOLATION SELECTOR VALVE
VALVEANTISKID ANTISKID
SHUTTLE BRAKE METERING SHUTTLE
VALVES VALVE ASSY VALVES
LEFT ALTERNATE
(2 PLACES)
RIGHT ALTERNATE ANTISKID CONTROL
LEFT
ANTISKID CONTROL
ANTISKID VALVE
PARKING BRAKE OUTBD
CONTROL INBD
VALVE SHUTOFF VALVE VALVES
AUTOBRAKE SHUTTLE
BRAKE BRAKEVALVESFLOW FLOW
FUSES
FUSES WHEEL WELL
INBD RIGHT ANTISKID
AFT BULKHEAD
OUTBDCONTROL VALVES
STA 727
SERVICING GAGE ACCUMULATOR BRAKE PRESS TRANSMITTER
BL 0
VIEW LOOKING AFT
HYDRAULIC LINE
ELECTRICAL
CONNECTOR
MOUNTING BOLT (4 LOCATIONS) ELECTRICALHYDRAULIC LINE CONNECTORS
HYDRAULIC LINE
1 ABEX MODULES
A1
Autobrake Pressure Control Module Installation Figure 401 (Sheet 1)
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737-300/400/500
MAINTENANCE MANUAL
