(6) S 865-027Supply electrical power (AMM 24-22-00/201).
(7) S 865-028Release the parking brake on panel P10.
(8) S 865-029Make sure that the AUTO BRAKES switch, on panel P1-3, is OFF.
(9) S 865-030Make sure that the 4 electrical drive hydraulic pumps are turned OFF on the pilot's overhead panel, P5.
S 865-073
(10)
Make sure that these circuit breakers on the overhead panel P11, are open and attach DO-NOT-CLOSE tags:
(a)
11S21, AUTO BK ANTISKID TEST IND 2
(b)
11S18, ANTI SKID 1-5
(c)
11S22, ANTI SKID 4-8
(d)
11C31, LANDING GEAR ANTISKID 2-6
(e)
11C32, LANDING GEAR ANTISKID 3-7
S 865-089
(11)
Make sure that this circuit breaker on the main power distribution panel P6 is closed:
(a)
6F4, LANDING GEAR PARKING BRAKE VLV
S 865-031
(12)
Make sure that these circuit breakers on the overhead panel P11 are closed:
(a)
11K15, ELEC PUMP C1
(b)
11K16, ELEC PUMP R
(c)
11K16, ELEC PUMP RIGHT
(d)
11K6, ELEC PUMP C2
(e)
11K25, ELEC PUMP L
(f)
11K25, ELEC PUMP LEFT
(g)
11S20, LEVER LOCK
S 615-032
(13)
Make sure that the parking brake accumulator is fully charged with nitrogen (AMM 12-15-04/301).
S 865-033
(14)
Pressurize the left hydraulic system and reservoir (AMM 29-11-00/501).
S 865-034
(15)
Slowly push in the brake pedals part of the way and release 6 times and then push in the pedals fully and release 6 times.
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S 615-035
(16)
Make sure the hydraulic reservoir is at the correct level and add hydraulic fluid if it is necessary (AMM 12-12-01/301).
S 865-036
(17)
Remove the pressure from the left hydraulic system and reservoir (AMM 29-11-00/501).
S 865-037
(18)
Pressurize the right hydraulic system and reservoir
(AMM 29-11-00/201).
S 865-038
(19)
Slowly push in the brake pedals part of the way and release 6 times and then push in the brake pedals fully and release 6 times.
S 615-039
(20)
Make sure the hydraulic reservoir is at the correct level and add hydraulic fluid if it is necessary (AMM 12-12-01/301).
F.
Test of the Hydraulic Brake System
S 865-041
(1)
Pressurize the right hydraulic system and reservoir
(AMM 29-11-00/201).
S 735-040
(2)
Do a test of the Normal Brake Hydraulic Indication
(a)
Make sure that the right system pressure on the EICAS maintenance page increases to 2850 to 3150 psig.
(b)
Make sure that the right SYS PRESS light on panel P5 is off.
(c)
Make sure that the left SYS PRESS light on panel P5 is on.
(d)
Make sure that the BRAKE PRESS gage on panel P3-1 is within 200 psig of the right system pressure indication on the EICAS maintenance page.
(e)
Open this circuit breaker on P11 overhead panel: 1) 11S13, BRAKE PRESS IND
(f)
Make sure that the brake pressure gage shows a loss of pressure.
(g)
Close this circuit breaker on the overhead panel P11: 1) 11S13, BRAKE PRESS IND
(h)
Make sure that the BRAKE SOURCE light on panel P1-3 is off.
(i)
Make sure that the pressure at each wheel brake gage is not more than 75 psig.
(j)
Remove the pressure from the right hydraulic system (AMM 29-11-00/501).
(k)
Make sure that the BRAKE SOURCE light comes on in 10 seconds or less.
(l)
Make sure that the BRAKE SOURCE message is shown on the EICAS operation page.
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(m)
Make sure that the BRAKE PRESS gage on panel P3 shows |100 psig of the pressure recorded in step (d).
(n)
Make sure that the left and right SYS PRESS lights are on.
(o)
Make sure that the left and right pressures on the EICAS maintenance page is less than 200 psig.
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本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(141)
