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 S 846-331
 (19) Put the left hydraulic system back to its usual condition as follows:
 (a) If you use the flowmeter technique, do these steps:
 1)  If you use an ACMP to pressurize the system, do these steps: a) Put the L HYD PUMPS ELEC pump switch on the P5 panel to
 the OFF position. b) Remove the flowmeter from the ACMP pressure line and connect the ACMP pressure line.
 2)  If you use a hydraulic service cart to pressurize the system, do these steps: a) Operate the hydraulic service cart to decrease the
 system pressure to zero. b) Disconnect the service cart and install the caps on the airplane ground power connections.
 (b)  If you use the multimeter technique, do these steps: 1) Put the L HYD PUMPS ELEC pump switch to the OFF position. 2) Remove the clamp-on ac current probe from the wire at the
 ACMP ELCU in the P32 panel.
 G.  Do the Full Center Hydraulic System Internal Leakage Check
 S 486-333
 (1)  If you use the flowmeter technique, do these steps:
 (a)  If you use an ACMP to pressurize the system, do these steps:
 1)  Install the flowmeter in the pressure line between the center system ACMP C1 and the ACMP C1 pressure/case drain filter.
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 29-11-00
 ALL  ú ú 06 Page 680L ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL

 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.
 2)  Put the C HYD PUMPS ELEC 1 pump switch to the ON position.
 (b)  If you use the hydraulic service cart, do these steps:
 1)  Connect the service cart pressure and return lines to the center 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.
 2)  Operate the hydraulic service cart to pressurize the center system to 3000 psi.
 S 486-334
 (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 center system ACMP C1 ELCU M10006 in the
　
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