757 AMM 飞机维护手册 液压 CHAPTER 29 - HYDRAULIC POWER 1(150)

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 2)  Operate the hydraulic service cart to pressurize the left system to 3000 psi.
 S 486-321
 (2)  If you use the multimeter technique, do these steps:
 (a)  Do these steps to install the multimeter and the clamp-on ac current probe: 1) Get access to the left system ACMP ELECU M10001 in the P32
 panel.
 WARNING: BE CAREFUL WHEN YOU INSTALL THE CLAMP-ON AC CURRENT
_______ PROBE INTO THE POWER PANEL. THE VOLTAGES IN THE POWER PANEL CAN KILL AND/OR CAUSE DAMAGE TO EQUIPMENT.
 2) Put the clamp-on ac current probe around one of the three wires which connect to the load side of the ELCU. 3) Connect the multimeter to the clamp-on ac current probe.
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES
_______ WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
 (b) Put the L HYD PUMPS ELEC pump switch to the ON position.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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MAINTENANCE MANUAL

 S 866-322

 (3)  Pressurize the right and center hydraulic systems with the hydraulic service cart or the system ACMP (Ref 29-11-00).
 (4)  S 866-323Make sure the landing gear lever is in the OFF position.
 (5)  S 866-324Make sure the flaps/slats are retracted and the flap handle is in the zero detent.
 (6)  S 866-325Make sure all autopilot switches on the pilots' glareshield panel, P55, are in the OFF position.
 (7)  S 866-326Make sure the two yaw damper switches on the pilots' overhead panel, P5, are in the INOP position.
 (8)  S 866-327Make sure the flight control shutoff valve switches on the right side panel, P61, are in the ON position.
 (9)  S 866-328Make sure the L HYD PUMPS ENG switch on the hydraulic control panel on the P5 panel is in the ON position.
 S 866-329

 (10)
 If you do not use the ACMPs to pressurize the system in this test, make sure the L HYD PUMPS ELEC switch on the hydraulic control panel on the P5 panel is in the OFF position.

 S 796-400

 (11)
 Do the Component Check for the Left Hydraulic System (Fig. 610).

 S 796-401

 (12)
 Do the Internal Leakage Check for the Left Hydraulic System -Landing Gear (Fig. 611).

 S 796-402
　
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