C. Procedure
S 862-318
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT
_______ THE OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this procedure: Thrust reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
S 862-020
(2)
Supply electrical power (AMM 24-22-00/201).
S 212-021
CAUTION: DO NOT OPERATE THE HYDRAULIC PUMPS AFTER THE HYDRAULIC
_______ TEMPERATURE INDICATION ON EICAS IS MORE THAN 100°C (212°F) OR AFTER THE PUMP OVERHEAT LIGHT COMES ON. IF YOU CONTINUE TO OPERATE THE PUMPS, THE HYDRAULIC FLUID CAN BECOME TOO HOT.
(3)
Make sure there is at least 600 gallons (4020 pounds/1827 kilograms) of fuel in each main fuel tank.
S 862-115
(4)
If the fuel tank contains less than 4020 pounds of fuel, do these steps:
(a) Stop the operation of the pump if the hydraulic temperature indication on EICAS is more than 100°C (212°F) or if the pump overheat light comes on.
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757 MAINTENANCE MANUAL
(b)
Do not operate the hydraulic pump more than 10 minutes.
(c)
After the operation of the pump, let the temperature of the pump decrease for 20 minutes with the pump off.
S 212-022
(5) Make sure the hydraulic reservoir is full (AMM 12-12-01/301).
S 862-023
CAUTION: PRESSURIZE THE CENTER SYSTEM RESERVOIR BEFORE YOU OPERATE THE
_______ CENTER SYSTEM ACMP'S. THE OPERATION OF THE PUMPS WITHOUT A SUFFICIENT SUPPLY OF FLUID CAN CAUSE DAMAGE TO THE PUMPS.
(6)
For the center system, do this procedure: Pressurize the Main Hydraulic Systems Reservoirs with a External Air Source.
S 862-024
(7)
For the left or right system, put the L or R HYD PUMPS - ELEC pump switch on the hydraulic control panel to the ON position.
S 862-025
(8)
For the center system, put the C HYD PUMPS - ELEC 1 and 2 pump switches on the hydraulic control panel to the ON position.
NOTE: You must supply electrical power from two sources if you
____ operate the C1 and C2 ACMPs at the same time.
S 212-026
(9) Make sure the hydraulic system pressure becomes stable at 2850 to 3150 psi.
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