757 AMM 飞机维护手册 液压 CHAPTER 29 - HYDRAULIC POWER 1(115)

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 2)  Connect the service cart pressure and return lines to the right system ground power connections with a flowmeter installed in the cart pressure line.
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL
_______ SURFACES WHEN YOU SUPPLY THE HYDRAULIC POWER. THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN YOU SUPPLY THE HYDRAULIC POWER.
 3)  Operate the hydraulic service cart to pressurize the right system to 3000 psi.
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757
MAINTENANCE MANUAL

 (2)  S 486-112If 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 right system ACMP ELCU M10005 in the P31 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) 3)  Put the clamp-on ac current probe around one of the three wires which connect to the load side of the ELCU.Connect the multimeter to the clamp-on ac current probe.
 WARNING:_______ KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN YOU SUPPLY THE HYDRAULIC POWER. THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN YOU SUPPLY THE HYDRAULIC POWER.
 (b)  Put the R HYD PUMPS ELEC pump switch to the ON position.
 (3)  S 866-114Operate the flight controls (elevator, rudder, ailerons and speed brakes) through five full cycles to cause the hydraulic fluid to become warm.
 (4)  S 866-115Put the control wheel in the neutral position and do not operate the other flight controls.
 (5)  S 976-116Measure the system gross leakage and write the value here:
 Right _______________ GPM (Value No. 1)
 (6)  S 866-117Put the R FLT CONTROL SHUTOFF switch on the P61 panel to OFF.
 NOTE:____ This removes right system pressure from the empennage flight controls.

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