(b)
For the left or right system, make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
WARNING: DO THE PROCEDURE IN AMM 32-00-15 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(c)
For the left or right system, open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
(d)
Remove the pressure from the applicable hydraulic system and the reservoir (AMM 29-11-00/201).
(e)
Open the drain valve on the applicable hydraulic reservoir.
(f)
Drain the hydraulic fluid into a container.
(g)
Close the reservoir drain valve when the reservoir fill indicator shows in the area that has a color.
(h)
Safety the reservoir drain valve with a lockwire.
(i)
For the center system, close the access panel, 197KL, for the central hydraulic service center (AMM 06-41-00/201).
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757 MAINTENANCE MANUAL
WARNING: USE THE PROCEDURE IN AMM 32-00-15 TO REMOVE THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(j) For the left or right system, remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).
S 613-011
(10) If the EICAS display or the reservoir fill indicator shows that the reservoir is not full, increase the fluid level with one of these procedures:
(a)
Fill the Hydraulic Reservoir with the Manual Procedure
(b)
Fill the Hydraulic Reservoir with the Pressure Procedure.
S 863-012
(11)
Put the reservoir fill valve to the CLOSED position.
S 863-013
(12)
Close the access panel, 197KL, for the central hydraulic service center (AMM 06-41-00/201).
S 863-014
(13)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).
TASK 12-12-01-613-015
3. Fill the Hydraulic Reservoir - Manual Procedure
_______________________________________________
A. Consumable Materials
(1) D00153 Hydraulic Fluid, Fire-Resistant -BMS 3-11
B. References
(1)
AMM 06-41-00/201, Fuselage Access Doors and Panels
(2)
AMM 24-22-00/201, Electrical Power - Control
(3)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
C. Access
(1) Location Zones
197 Wing to Body - Aft Lower Half (Left)
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(2) Access Panels
197KL Central Hydraulic Service Center
D. Procedure (Fig. 301)
S 863-016
(1)
Supply electrical power (AMM 24-22-00/201).
S 863-017
(2)
Open the access door, 197KL, for the central hydraulic service center (AMM 06-41-00/201).
S 863-018
(3)
Do these steps before you fill the reservoir in the right hydraulic system:
(a) Make sure the pressure gage on the brake accumulator, in the aft left wing-to-body fairing, shows a minimum of 2500 psi.
CAUTION: YOU MUST HAVE FLUID IN THE RIGHT SYSTEM RESERVOIR, BEFORE
_______ YOU OPERATE THE HYDRAULIC PUMPS OR YOU MUST PRESSURIZE THE RIGHT SYSTEM WITH A HYDRAULIC SERVICE CART. IF YOU OPERATE THE HYDRAULIC PUMPS WITHOUT SUFFICIENT FLUID IN THE RESERVOIR, YOU CAN CAUSE DAMAGE TO THE PUMPS.
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