(10)
Safety the electrical connector with a lockwire.
S 864-025
(11)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11:
(a)
11D28, HYDRAULIC ENG PUMP SOV L or HYDRAULIC ENG PUMP SUPPLY LEFT
(b)
11D29, HYDRAULIC ENG PUMP SOV R or HYDRAULIC ENG PUMP SUPPLY RIGHT
S 864-026
(12) Pressurize the reservoir in the left or right hydraulic system (AMM 29-11-00/201).
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29-11-06
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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MAINTENANCE MANUAL
S 714-027
(13) Do these steps to do a test of the EDP supply shutoff valve.
(a)
Make sure the applicable engine fire-shutoff switch on the aft control stand panel, P8, is in the usual position.
(b)
Push the manual override switch below the handle on the engine fire-shutoff switch.
CAUTION: AFTER YOU PULL THE FIRE SWITCH, DO NOT TURN THE FIRE
_______ SWITCH. IF YOU TURN THE FIRE SWITCH, YOU WILL RELEASE THE CONTENTS OF THE FIRE EXTINGUISHER BOTTLES WHICH HAVE PRESSURE IN THEM.
(c)
Pull the engine fire switch to the armed position.
(d)
Make sure the valve position indicator on the valve (7) moves smoothly to the CLOSE position.
(e)
Push the engine fire switch to the usual position.
(f)
Press the L GEN CONT (R GEN CONT) on the P5 electrical systemcontrol panel.
NOTE: Cycling the left and right generator controlswitches resets the generator fields.
(g)
Make sure the valve (7) moves smoothly to the OPEN position.
(h)
Replace the valve (7) for these conditions: 1) The operation of the valve is rough. 2) The valve stops between the OPEN and CLOSED positions. 3) The valve shows signs that it was too hot.
S 214-028
(14)
Make sure there are no leaks at the valve (7) or the hydraulic line connections.
S 864-029
(15)
Remove the pressure from the left or right system reservoir (AMM 29-11-00/201).
S 114-030
CAUTION: QUICKLY CLEAN THE INSTALLATION AREA OF ALL HYDRAULIC FLUID.
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