78-34-02
VALVES ú CONFIG 1 ú N02 Page 408 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
THRUST REVERSER FLOW CONTROL TEE - REMOVAL/INSTALLATION
_______________________________________________________
1. General
_______
A. This procedure has four tasks.
(1)
Remove the retract flow control tee.
(2)
Remove the extend flow control tee.
(3)
Install the extend flow control tee.
(4)
Install the retract flow control tee.
(5)
The flow control tees for the thrust reverser are attached to the directional control valve, which is on the strut. You must remove the strut forward fairing for access.
(6)
The Directional Control Valve for the thrust reverser shall be referred to as the DCV for these tasks.
TASK 78-34-02-004-001-N02
2. Remove the Thrust Reverser Flow Control Tee
___________________________________________
A. References
(1)
AMM 27-62-00/201, Speedbrake Control System
(2)
AMM 78-31-00/201, Thrust Reverser System
(3)
AMM 78-34-01/401, Thrust Reverser Directinal Control Valve
(4)
IPC 78-34-01 Fig. 1
B.
Access
(1)
Location Zones
450 Strut - Engine 1
460 Strut - Engine 2
470 Strut - Engine 3
480 Strut - Engine 4
(2)
Access Panel 451A and 451B #2 and #3 Forward Fairing, Engine 1 461A and 461B #2 and #3 Forward Fairing, Engine 2 471A and 471B #2 and #3 Forward Fairing, Engine 3 481A and 481B #2 and #3 Forward Fairing, Engine 4
C.
Prepare to Remove the Flow Control Tees for the Thrust Reverser.
S 044-018-N02
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPEED BRAKE CONTROL
_______ SYSTEM. IF YOU DO NOT DO THIS, THE SPOILERS CAN MOVE QUICKLY WHEN YOU MOVE THE THRUST LEVERS. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Do the deactivation procedure for the Speed Brake Control System (AMM 27-62-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ONE-WAY VALVE RESTRICTORS ú
78-34-02
ú CONFIG 2 ú N01 Page 401 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 864-019-N02
(2) Make sure the forward thrust levers are in the idle position.
(a) Install the DO-NOT-OPERATE tag to the thrust levers.
S 864-020-N02
(3) Make sure the reverse thrust levers are in the forward and down (stow) position.
(a) Install the DO-NOT-OPERATE tag to the thrust levers.
S 044-021-N02
WARNING: DO THE DEACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______ THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(4)
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).
S 014-022-N02
(5)
Remove the applicable forward fairing panel.
S 214-023-N02
(6)
Make sure the forward fairing panel is not damaged.
D.
Remove the Retract Flow Control Tee for the Thrust Reverser (Fig. 401).
S 024-024-N02
(1)
Loosen the clamp for the hydraulic extend and retract lines.
S 024-025-N02
(2)
Loosen the tube nut on the hydraulic retract lines (7).
S 034-026-N02
(3)
Move the tube nuts forward.
S 024-027-N02
(4)
Loosen the swivel nut for the elbow (12).
(5)
Remove the elbow (12) and restrictor valve (8) from the strut.
S 024-028-N02
NOTE: Keep the restrictor valve (8) installed on the elbow (12)
____
unless it is defective.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ONE-WAY VALVE RESTRICTORS ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 EXHAUST 2(69)
