(a)
Remove the pressure from the left and right hydraulic systems and reservoirs (AMM 29-11-00/501).
(b)
Make sure that the parking brake accumulator is fully charged (AMM 12-15-04/301).
(c)
Pressurize the left and right hydraulic systems and reservoirs (AMM 29-11-00/201).
(d)
Make sure the left and right SYS PRESS and BRAKE SOURCE lights are on.
(e)
Make sure that the left and right system pressures shown on the EICAS maintenance page increases to 2850 to 3150 psig.
(f)
Make sure that the BRAKE PRESS gage indication is 2850 to 3150 psig.
(g)
Make sure that the left and right SYS PRESS and BRAKE SOURCE lights are off.
(h)
Push in the brake pedals, hold for 2-3 seconds, then release.
(i)
Make sure that the right system pressure on EICAS maintenance page and brake pressure gage momentarily decrease.
(j)
Remove the pressure from the right hydraulic system and reservoir (AMM 29-11-00/501).
(k)
Make sure that the left system pressure indication is 2850 to 3150 psig and the right system pressure indication is less than 75 psig.
(l)
Push in the brake pedals, hold for 2-3 seconds, then release. Do this 5 times.
(m)
Make sure that the left system pressure shown on the EICAS maintenance page momentarily decreases after each time that you push in and release the brake.
S 865-062
(17)
Remove the pressure from the left hydraulic system (AMM 29-11-00) while you make sure that the BRAKE SOURCE light comes on in 10 seconds or less.
S 735-063
(18)
Continue the test.
(a)
Make sure that the BRAKE PRESS gage indication is within |300 psig of the original right system pressure, as much as 5 minutes after pressure is removed.
(b)
Push in the brake pedals, hold for 2-3 seconds, then release. Do this 6 more times until the BRAKE PRESS gage decreases to the accumulator precharge pressure. Make sure that the gage shows reduced pressure after each time that you push in and release the brake pedals.
(19)
Do a test of the Reserve System Braking (AMM 29-11-00/201).
S 735-064
32-41-00
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757 MAINTENANCE MANUAL
G. Put the Airplane Back to Its Usual Condition
S 085-065
(1)
If pressure gages are installed on the brake bleed fittings, do the steps that follow:
(a)
Make sure that the parking brake is released and that the brakes are not applied.
(b)
Remove the pressure gages from each brake bleed fitting.
S 865-066
(2)
Pressurize the right hydraulic system (AMM 29-11-00/201) if it is not already pressurized.
S 865-067
(3)
Operate the brake pedals several times to bleed any trapped air from the brake lines.
S 865-068
(4)
Set the parking brakes.
S 095-069
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Remove the main landing gear door locks and close the main landing gear doors (AMM 32-00-15/201).
S 865-070
(6)
Remove the pressure from the right and center hydraulic systems if it is no longer necessary (AMM 29-11-00/201).
S 865-071
(7)
Remove electrical power if it is no longer necessary
(AMM 24-22-00/201).
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757 MAINTENANCE MANUAL
BRAKE-PEDAL BUS MECHANISM - REMOVAL/INSTALLATION
________________________________________________
1. General_______
A. This procedure contains two tasks. The first task removes the brake-pedal bus mechanism.The second task installs the brake-pedal bus mechanism.
TASK 32-41-01-004-001
2. Remove the Brake-Pedal Bus Mechanism (Fig. 401)____________________________________
A. Equipment
(1)
Rig Pins from Set B20003-XX (AMM 20-10-24/201):
(a)
LGB1 - P/N B20003-28
(b)
LGB2 - P/N B20003-28
(c)
R1A - P/N B20003-26
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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(144)
