S 216-274
(2)
Make sure the PRESS light for the center ACMP C1 on the P5 panel is off.
S 816-275
(3)
If the PRESS light for the center ACMP C1 is on, repair the pressure indication circuit for this light and again do the two steps above.
S 216-276
(4)
Make sure the PRESS light for the center ACMP C2 is on.
NOTE: If there is a leak of system pressure through the ACMP C2
____ check valve, the PRESS light will be off.
S 366-277
(5)
If the PRESS light for ACMP C2 is off, replace the check valve for ACMP C2 in the center ACMP filter module (AMM 29-11-19/401).
S 866-279
(6)
Push the C HYD PUMPS ELEC 1 switch to OFF and the C HYD PUMPS ELEC 2 switch to ON on the P5 panel.
S 216-280
(7)
Make sure the PRESS light for the center ACMP C2 is off.
S 816-278
(8)
If the PRESS light for the center ACMP C2 is on, repair the pressure indication circuit for this light and again do the two steps above.
S 216-281
(9)
Make sure the PRESS light for the center ACMP C1 is on.
NOTE: If there is a leak of system pressure through the ACMP C1
____ check valve, the PRESS light will be off.
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29-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 366-282
(10)
If the PRESS light for ACMP C1 is off, replace the check valve for ACMP C2 in the center ACMP filter module (AMM 29-11-19/401).
S 866-283
(11)
Remove the pressure from the center hydraulic system and reservoir (AMM 29-11-00/201).
S 036-284
(12)
Disconnect the pressure hose at the ACMP C1 (AMM 29-11-02/401).
S 036-285
(13)
Install a cap on the ACMP C1 pressure port and put the end of the pressure hose in a container to catch the fluid.
NOTE: This a check to make sure a pressure leak through the ACMP
____
C1 check valve does not back-drive the ACMP.
S 866-286
CAUTION: USE CARE WHEN YOU DO A CHECK FOR FLUID LEAKAGE FROM THE
_______ PRESSURE HOSE. A SPRAY OF FLUID FROM THE PRESSURE HOSE CAN CAUSE INJURY TO PERSONS.
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