P.O. Box 1300
Lodi, NJ 07644-9982
(2)
Air Source - Compressed Dry Filtered, 0-150 psi (0-1034 KPa)
(3)
Gauge - Pressure, 0-150 psi (0-1034 KPa) range, |1% accuracy
(4)
Valve - Shutoff
(5)
Valve - Vent
C.
Consumable Materials
(1)
G01505 Lockwire - MS20995
(2)
G02151 Leak Detector - Leak Tek Formular 372, PMC 9569
(3)
G02332 Ferrule - P05-292 (Optional)
(4)
G02335 Cable - Safety - P05-291 (Optional)
D.
References
(1)
AMM 73-31-01/401, Fuel Flow Transmitter
E.
Procedure
S 014-466-N00
(1)
Do this task: "Fuel Flow Transmitter Removal" (AMM 73-31-01/401).
S 484-467-N00
(2)
Install the PWA 85579 adapter to the fuel distribution valve:
(a)
Install the packing on the adapter.
(b)
Align the alignment hole of the adapter to the end of the fuel distribution valve.
(c)
Install the adapter with the four screws.
(d)
Attach the air pressure line to the adapter.
S 484-328-N00
(3)
Connect the compressed air source, the pressure gage, the vent valve and the shutoff valve to the adapter.
S 794-006-N00
(4)
Do the leak check of the fuel manifolds:
(a)
Apply the clean air through the adapter at 95-105 psig (655.0-723.9 KPa).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(b)
Apply the leak detector to the fuel manifolds (1, 4) and the tube nuts.
(c)
Look for the leaks from the surface at the connections for five minutes.
(d)
Bleed the pressure to zero.
(e)
If you find the leakage, repair or replace the parts as it is necessary. 1) Do the leak check of the fuel manifolds again.
S 424-007-N00
(5)
Tighten the tube nuts on the fuel manifold (4) and the supply tube (1):
(a)
Tighten the tube nuts which connect the fuel manifold (4) to the fuel injectors (5) to 185-200 pound-inches (20.9-22.6 newton-meters). 1) Tighten the tube nuts again until the necessary torque is
kept.
NOTE: If the torque of the tube nut decreases after the
____ fourth time you try to tighten it, replace the fuel manifold, fuel tubes or seals as necessary.
(b) Tighten the tube nut which connects the supply tube (1) to the fuel manifold (4) to 275-325 pound-inches (31.1-36.7 newton-meters). 1) Tighten the tube nuts again until the necessary torque is
kept.
NOTE: If the torque of the tube nut decreases after the
____ fourth time you try to tighten it, replace the fuel manifold, fuel tubes or seals as necessary.
(c) Install the lockwire or safety cable and safety cable ferrule on the tube nuts for the fuel manifold (4) and the supply tube (1).
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73-11-05
ALL ú ú N02 Page 480X ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(6) S 084-329-N00Disconnect the compressed air source, the pressure gage, the vent valve, and the shutoff valve from the adapter.
(7) S 084-330-N00Remove the PWA 85579 adapter.
(8) S 414-468-N00Do this task: "Fuel Flow Transmitter Installation" (AMM 73-31-01/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. 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 发动机燃油和控制 1(87)
