S 495-174
(3)
Make sure the chocks are installed at each wheel.
S 845-074
(4)
Make sure that all hydraulic systems are off (AMM 29-11-00/201).
(5)
Release the parking brake.
(6)
Make sure the landing gear handle is in the DN position.
S 865-036
(7)
Operate the brake pedals until the HYD BRAKE PRESS gauge on the P1-4 panel shows the precharge pressure for the accumulator.
S 845-075
S 845-076
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S 845-078
WARNING: MAKE SURE YOU OPEN THE CIRCUIT BREAKERS FOR THE CAPTAIN'S AND
_______ THE FIRST OFFICER'S SEATS BEFORE YOU DO WORK AROUND THEM. IF YOU DO NOT OPEN THE CIRCUIT BREAKERS THE SEATS CAN MOVE ACCIDENTALLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(8)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P414, Power Distribution Center - Left Panel
1) 414D8, CAPT PWR SEAT
(b)
P415, Power Distribution Center - Right Panel 1) 415H32, F/O PWR SEAT
S 865-093
(9) Supply electrical power (AMM 24-22-00/201).
S 485-079
CAUTION: DO NOT TIGHTEN THE BRAKE PRESSURE GAGE TO MORE THAN 110 POUND-
_______ INCHES. IF YOU TIGHTEN THE BRAKE PRESSURE GAGE TO MORE THAN 110 POUND-INCHES YOU CAN DAMAGE THE BRAKE.
(10) Remove the brake bleeder assemblies on each wheel brake and install a pressure gage (16 locations).
NOTE: Put the bleed plugs in a clean bag and keep them for
____
installation when you complete the test.
S 615-095
(11)
Make sure the brake hydraulic accumulator has the correct precharge pressure (AMM 12-15-09/301).
S 615-097
(12)
Make sure the accumulators for antiskid return have the correct precharge pressure (AMM 12-15-11/301).
NOTE: The accumulators are installed in each wing and the wheel
____
for the right body gear.
G. Test of the Hydraulic Brake System
S 735-037
(1)
Do the steps that follow to do a test of the mechanical linkage:
(a)
Install rig pin No. 3 in the forward rudder quadrant (left side) to prevent movement (Fig. 503).
(b)
Push the brake pedals to the stops.
(c)
Release the brake pedals.
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MAINTENANCE MANUAL
RIG PIN NO. 3
HYDRAULIC BRAKE
LOCATION
INDICATORS
SEE B
SEE A
P1-2
P1-4 HYDRAULIC BRAKE INDICATORS
A
CONTROL STICK
RIG PIN N0. 3
BRAKE PEDAL BELLCRANK
RIG PIN NO. 3 LOCATION
FORWARD RUDDER QUADRANT
(LEFT SIDE)
B
Rig Pin and Indication Location for the Hydraulic Brake System
Figure 503
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(d)
Push the brake pedals slowly to the stops. Make sure the pedals move smoothly and freely.
(e)
Slowly release the brake pedals. Make sure the pedals move smoothly and freely to their initial position.
(f)
Use your hand to push each brake pedal through one inch of travel. Make sure the pedal moves freely in each direction.
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