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 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 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 L HYD PUMPS ELEC pump switch to the ON position.
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MAINTENANCE MANUAL

 (3)  S 866-059Operate the flight controls (elevator, rudder, ailerons and speed brakes) through five full cycles to cause the hydraulic fluid to become warm.
 (4)  S 866-060Put the control wheel in the neutral position and do not operate the other flight controls.
 (5)  S 976-476Measure the system gross leakage and write the value here:
 Left _______________ GPM (Value No. 1)

 S 866-061
 (6)  Put the L FLT CONTROL SHUTOFF switch on the P61 panel to OFF.
 NOTE: This removes left system pressure from the empennage flight
____ controls.
 S 976-062
 (7)  Measure the system gross leakage for the lateral flight controls and write the value here:
 Left _______________ GPM (Value No. 2)
 S 866-063
 (8)  
Put the speedbrake lever at approximately the middle position between the ARMED and the UP detents.

 S 976-064

 (9)  
Measure the leakage and write the value here:

 Left _______________ GPM (Value No. 3)
 S 976-065
 (10) Subtract Value No. 2 from Value No. 3 and write the value here:
 Left Value No. 3
 minus Value No. 2 = _______ GPM (Value No. 4)

 S 976-066
 (11) If Value No. 4 is less than -1.5 GPM, usually you must replace a spoiler PCA because of high seal leakage.
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本文鏈接地址：757 AMM 飛機維護手冊 液壓 CHAPTER 29 - HYDRAULIC POWER 1(108)