(AMM 29-11-00/201). 4) Put the thrust levers in the idle position. 5) Retract the spoilers. 6) Put the L, R and C IRU's in the NAV mode
(AMM 34-21-00/501).
NOTE: The IRU's must be aligned.
____
7) Close this circuit breaker on the P6 panel:
a) 6F4, LANDING GEAR PARKING BRAKE VLV 8) Open the forward cargo door, 821 (AMM 06-46-00/201). 9) Remove the E5 rack access panel on the forward bulkhead
that is forward of the cargo door (AMM 25-50-03/401) and find the Antiskid/Autobrake Control Unit. 10) Make sure that the BRAKE TEST rotary switch on the unit (M102) is in the NORM position.
11) Push in the RESET button on the control unit. Make sure that the unit display shows MEM CLR for approximately five seconds.
(b) Do a test to make sure that antiskid/autobrake control operation is correct as follows: 1) Put the AUTOBRAKES selector switch on the P1-3 panel to
position 1.
2) Push in the ENABLE/VERIFY switch on the unit and hold, and then push in the VERIFY switch and then release them at the same time.
NOTE: The dislay will flash WAIT four times while the test
____
operates.
3) Make sure the unit message TEST END or a fault message shows after 15 | 5 seconds. If a fault message shows, push in the VERIFY switch to continue the test until the message TEST END shows.
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4) Push in the RESET button.
WARNING:_______ MAKE SURE THAT THE AREA AROUND THE BRAKES IS CLEAR
AND CHOCKS ARE INSTALLED ON THE WHEELS. THIS WILL PREVENT
POSSIBLE DAMAGE TO EQUIPMENT OR INJURY TO PERSONS WHEN THE
BRAKES APPLY AND RELEASE IN THIS TEST.
(c) For the normal antiskid valve, do this normal antiskid brake test: 1) Release the parking brake. 2) Open this circuit breaker on the P6 panel and attach a
DO-NOT-CLOSE tag: a) 6F4, LANDING GEAR PARKING BRAKE VLV 3) Set the parking brake.
NOTE: With the parking brake set and hydraulic pressure on
____ there will be continuous pressure at the brakes for the test that follows.
4) Put the BRAKE TEST rotary switch in the position as shown for each test step in Table 1. 5) For each test step in Table 1, do the test as follows:
a) Push in the ENABLE/VERIFY switch and hold, and then push in the VERIFY switch and release them at the same time.
b) Make sure that the brake shown in column A releases for five seconds and then applies again:
NOTE: You can see the brakes apply and release if you
____ look at brake piston movement. The brake pistons extend when the brake is applied and retract when the brake is released.
c) Make sure that the unit message display for the brake cycle is as shown in Table 1.
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~............................................................................ | Table 1 | .............................................................................. | | | Message Display | | | | Step | Brake Test Switch Position | During Brake Cycle | A | B | ..............................................................................
| 1 | BRAKE TEST 1 | BRK 1 | 1 | 1-2 |
| 2 | BRAKE TEST 5 | BRK 5 | 5 | 5-6 |
| 3 | BRAKE TEST 2 | BRK 2 | 2 | 1-2 |
| 4 | BRAKE TEST 6 | BRK 6 | 6 | 5-6 |
| 5 | BRAKE TEST 3 | BRK 3 | 3 | 3-4 |
| 6 | BRAKE TEST 7 | BRK 7 | 7 | 7-8 |
| 7 | BRAKE TEST 4 | BRK 4 | 4 | 3-4 |
| 8 | BRAKE TEST 8 | BRK 8 | 8 | 7-8 |
2........…..............................…........................….....….....1
(d) For the alternate antiskid valve, do this alternate antiskid brake test. 1) Remove the pressure from the right hydraulic system
(AMM 29-11-00/201). 2) Pressurize the left hydraulic system and reservoir
(AMM 29-11-00/201). 3) Make sure that the parking brake is set. 4) Put the BRAKE TEST rotary switch in the position as shown
for each test step in Table 1. 5) Do each test step in Table 1 as folloows:
a) Push in the ENABLE/VERIFY switch and hold, and then push in the VERIFY switch and then release both switches at the same time.
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