(a)
Tighten the pressure switch on the isolation valve.
(b)
Install the lockwire on the pressure switch.
S 414-018-N00
(3) Install the isolation valve for the thrust reverser
(AMM 78-34-05/401).
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D. Put the Airplane Back to Its Usual Condition.
S 444-019-N00
(1)
Do the activation procedure for the thrust reversers
(AMM 78-31-00/201).
S 444-021-N00
(2)
Do the activation procedure for the speed brake control system (AMM 27-62-00/201).
S 864-023-N00
(3)
Do the activation procedure for the Main Hydraulic Supply System (AMM 29-11-00/201).
S 864-020-N00
(4)
Remove the DO-NOT-OPERATE tags from the thrust reverser levers.
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THRUST REVERSER ISOLATION VALVE SOLENOID
________________________________________ REMOVAL/INSTALLATION
____________________
1. General_______
A. This procedure gives the instructions to remove and install the solenoid for the isolation valve. You can get access to the isolation valve through the access door for the isolation valve. On the inboard strut, the solenoid is below the no. 3 forward fairing. On the outboard strut, the solenoid is below the no. 4 forward fairing.
TASK 78-34-08-004-001-N00
2. Remove the Thrust Reverser Isolation Valve Solenoid___________________________________________________
A. References
(1)
AMM 27-62-00/501, Spoiler/Speedbrake Control System
(2)
AMM 78-31-00/201, Thrust Reverser System
(3)
AMM 78-34-05/401, Thrust Reverser Isolation Valve
(4)
IPC 78-34-05 Fig. 5 and 6
B.
Access
(1)
Location Zone
450 Strut 1
460 Strut 2
470 Strut 3
480 Strut 4
(2)
Access Panels 451BL Thrust Reverser Isolation Valve Access Door - Strut 1 462EL Aft Upper Midspar Pressure Relief Access Door - Strut 2 472EL Aft Upper Midspar Pressure Relief Access Door - Strut 3 481BL Thrust Reverser Isolation Valve Access Door - Strut 4
C.
Prepare to Remove the Solenoid for the Isolation Valve.
S 044-016-N00
WARNING: DO THE SPOILER/SPEEDBRAKE DEACTIVATION PROCEDURE OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILER/SPEEDBRAKE. THE SPOILER/SPEEDBRAKE CAN MOVE QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do the deactivation procedure for the spoiler/speedbrake control system when you move the forward or reverse thrust levers (AMM 27-62-00/501).
S 864-003-N00
(2)
Make sure the forward thrust levers are in the idle position.
(a) Install the DO-NOT-OPERATE tags on the forward thrust levers.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 864-017-N00
(3) Make sure the reverse thrust levers are in the stow position.
(a) Install the DO-NOT-OPERATE tags on the reverse thrust levers.
S 044-018-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
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