S 865-016

 (12)
 Push the ELEC/HYD switch on the EICAS MAINT panel, on the right side panel, P61.

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A
757 MAINTENANCE MANUAL
 S 215-017
 (13) Make sure the L, C, and R HYD QTY indication on the EICAS display is at least 0.80.
 D. Do a Test of the Left (Right) Hydraulic System
 S 715-338
 WARNING: PRESSURIZATION OF A MAIN HYDRAULIC SYSTEM WILL SUPPLY POWER TO
_______ COMPONENTS OF THE AILERON, ELEVATOR, RUDDER, SPOILER, WING FLAPS, LANDING GEAR SYSTEMS AND WHEEL WELL DOORS. WHEN YOU SUPPLY THE HYDRAULIC POWER, THE AILERONS AND ELEVATORS WILL TRY TO MOVE TO THE NEUTRAL POSITION. ALSO, ALL SYSTEMS WILL TRY TO MOVE TO THE POSITION OF THE CONTROLS. MAKE SURE ALL PERSONS AND EQUIPMENT ARE CLEAR OF ALL THE CONTROL SURFACES. MOVEMENT OF THE CONTROL SURFACES CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 WITH ELECTRICAL AND HYDRAULIC POWER AVAILABLE, IF YOU REMOVE THE ELECTRICAL POWER, MOVE THE THRUST LEVERS, OR DO THE AIR/GROUND RELAYS FLIGHT MODE SIMULATION PROCEDURE, THIS CAN CAUSE ACCIDENTAL MOVEMENT OF THE SPOILERS. REFER TO AMM 27-61-00/201 FOR THE APPLICABLE SPOILER/SPEEDBRAKE DEACTIVATION PROCEDURE. THE ACCIDENTAL SPOILER MOVEMENT CAN CAUSE INJURY TO PERSONS.
 (1)  Do a test of the hydraulic pressure indication, on the EICAS display, for the left (right) engine-driven pump (EDP) as follows:
 (a)  Operate the left (right) engine at minimum power (AMM 71-00-00/201).
 NOTE: You can motor the engine with the starter as an
____ alternative to the operation of the engine.
 (b)  
Put the L (R) HYD PUMPS ENG switch, on the hydraulic control panel, in the ON position.

 (c)  
Make sure the L (R) HYD PUMPS ENG switch/light, on the hydraulic control panel, comes on.

 (d)  
Make sure the L (R) HYD PRESS indication on the EICAS display is 2850 to 3150 psi.

 S 215-019
 (2) Make sure these lights on the hydraulic control panel are off:
 (a)  
SYS PRESS light for the left (right) hydraulic system

 (b)  
PRESS light for the left (right) EDP

 (c)  
OVHT light for the left (right) EDP.

 S 215-020
 (3)  Make sure the EICAS message, L (R) ENG HYD OVHT, does not show on the EICAS display.
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