(4)
AMM 32-00-15/201, Main Gear Door Locks
(5)
AMM 32-00-20/201, Landing Gear Downlocks
B. Access
(1) Location Zones
143 Left MLG Wheel Well
144 Right MLG Wheel Well
197 Wing to Body - Aft Lower Half (Left)
211/212 Control Cabin
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757 MAINTENANCE MANUAL
(2) Access Panels
197KL Central Hydraulic Service Center
C. Procedure (Fig. 301)
S 863-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 013-003
(2)
Open the access panel, 197KL, for the central hydraulic service center (AMM 06-41-00/201).
S 863-004
(3)
Put the reservoir fill valve to the position (L, R, or C) for the hydraulic system on which you will do the check.
S 863-005
(4)
Make sure the six EICAS circuit breakers on the overhead panel, P11, are closed.
S 863-006
(5)
Do these steps before you do a check of the fluid level 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.
(b)
If the pressure gage does not show a minimum of 2500 psi, pressurize the right hydraulic system (AMM 29-11-00/201).
(c)
Remove hydraulic power, after the right hydraulic system pressurizes the brake accumulator to a minimum of 2500 psi (AMM 29-11-00/201).
S 863-007
(6) Push the ELEC/HYD switch on the EICAS MAINT panel, on the right side panel, P61.
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SELECTOR VALVE, FILTER MODULE, AND FILL INDICATOR
SEE B
CENTRAL HYDRAULIC
SERVICE CENTER
MANUAL FILL PUMP
SEE A
FILTER MODULE
SEE C
FOR RESERVOIR
FILL
RESERVOIR
FILL
INDICATOR
SELECTOR VALVE TO FILL THE RESERVOIRS FWD
PRESSURE FILL CONNECTION
SEE B
CENTRAL HYDRAULIC SERVICE CENTER
FWD OUTBD
A
PRESSURE FILL
CONNECTION
SELECTOR VALVE, FILTER MODULE, FILL INDICATOR
PUMP
AND PRESSURE FILL CONNECTION
B
PUMP HANDLE
SUCTION HOSE C MANUAL FILL PUMP FWD OUTBD
Central Hydraulic Service Center Figure 301
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S 213-008
(7) Make sure the O/F or the RF indication does not show on the EICAS display adjacent to the (L, C, R) HYD QTY indication.
S 213-009
(8) Make sure the reservoir fill indicator, at the central hydraulic service center, shows in the area that has a color, as follows: (a) Red for the left system (b) Blue for the center system (c) Green for the right system.
S 683-054
WARNING:_______HYDRAULIC FLUID, BMS 3-11, CAN CAUSE INJURY TO PERSONS. IF YOU GET THE HYDRAULIC FLUID ON YOUR SKIN, FLUSH YOUR SKIN WITH WATER. IF YOU GET THE HYDRAULIC FLUID IN YOUR EYES, FLUSH YOUR EYES WITH WATER AND GET MEDICAL AID. IF YOU EAT OR DRINK THE HYDRAULIC FLUID, GET MEDICAL AID.
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