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30-21-03
ALL ú ú 01 Page 403 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TASK 30-21-03-404-010
3. Engine Inlet Anti-Ice Valve Installation (Fig. 401)
________________________________________
A. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Coupling | 30-21-03 | 01 | 5 | | | 2 | Valve | | | 15 | | | 5 | Seal | | | 10 | | | 6 | Union | | | 50 | | | 7 | Packing | | | 60 | 2......…........…...................................…...........….....…........1
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatic System
(3)
AMM 36-11-04/201, Engine Bleed Air Pressure Regulating and Shutoff Valve
(4)
AMM 54-62-04/401, Forward Fairing - Removal/Installation
(5)
SSM 30-21-01
(6)
WDM 30-21-11
C. Access
(1)
AIRPLANES WITH ACCESS DOOR ON THE FORWARD FAIRING;
Location Zone 451 Engine 1 - Strut Forward Fairing, No. 3 Fairing 461 Engine 2 - Strut Forward Fairing, No. 3 Fairing 471 Engine 3 - Strut Forward Fairing, No. 3 Fairing 481 Engine 4 - Strut Forward Fairing, No. 3 Fairing
(2)
AIRPLANES WITHOUT ACCESS DOOR ON THE FORWARD FAIRING; Location Zone 451 Engine 1 - Strut Forward Fairing, No. 2 and No. 3 Fairings 461 Engine 2 - Strut Forward Fairing, No. 2 and No. 3 Fairings 471 Engine 3 - Strut Forward Fairing, No. 2 and No. 3 Fairings
481 Engine 4 - Strut Forward Fairing, No. 2 and No. 3 Fairings
D. Valve Installation
S 424-011
(1) Install the valve:
(a) Set the anti-ice valve (2) in the duct and install the couplings (1) with the seals (5).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-03
ALL ú ú 01 Page 404 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
CAUTION: MAKE SURE THAT THE VALVE IS INSTALLED AS SPECIFIED IN THE
_______ STEP THAT FOLLOWS. IF THE VALVE IS NOT INSTALLED CORRECTLY, THE ELECTRICAL CONNECTOR CAN TOUCH THE HYDRAULIC LINE AND CASUE DAMAGE TO IT.
(b)
Turn the valve so that center of the electrical connector on the valve is 4.20 to 4.50 inches from the flange surface of the upper spar fitting assembly (Fig. 401). 1) Tighten the couplings to 95-110 pound-inches torque.
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