S 215-230
(33)
Make sure the ACMP C2 in the center hydraulic system, in the aft left wing-to-body fairing, stops in less than 1 second.
S 865-227
S 865-229
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S 865-231
(34) Put these switches on the hydraulic control panel in the OFF position:
(a)
C HYD PUMPS ELEC 1
(b)
C HYD PUMPS ELEC 2.
S 865-232
(35)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11K16, ELEC PUMP RIGHT
(b)
11K25, ELEC PUMP LEFT
H.
Do a test of the Engine-Driven Pump (EDP) in the Left Hydraulic System With the Engine in Operation
S 865-233
(1) Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag :
(a) 11D31, HYDRAULIC PTU CONT
S 865-235
(2) Put these switches, on the hydraulic control panel, in the OFF position:
(a)
L and R HYD PUMPS ELEC
(b)
C HYD PUMPS ELEC 1 and 2
(c)
L and R HYD PUMPS ENG.
S 215-236
(3)
Make sure these lights on the hydraulic control panel are on:
(a)
SYS PRESS light for the left hydraulic system
(b)
PRESS light for the left EDP.
(4)
Operate the left engine at minimum power (AMM 71-00-00/201).
S 215-238
(5)
Make sure these lights on the hydraulic control panel are on:
S 865-237
(a) SYS PRESS light for the left hydraulic system
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757
MAINTENANCE MANUAL
(b) PRESS light for the left EDP.
(6) S 215-239Make sure the L HYD PRESS indication, on the EICAS display, is 0 to 200 psi.
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