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28-16-06 ALL ú ú 01 Page 403 ú Feb 18/00 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL
MAIN TANK TRANSFER ADAPTER SEE A SHAFT ADAPTER B BODY VALVE O-RING PLATE ADAPTER HOLE (4 LOCATIONS) ACTUATOR MOUNTING CLAMP SUPPORT SHAFT (4 LOCATIONS) MOUNTING BOLT ADAPTER PLATE (4 LOCATIONS) WASHER SEE B INDEX PLATE (3 LOCATIONS) IN THE INDEX PLATE MOUNTING SCREW MAIN TANK TRANFER ADAPTER A Main Tank Transfer Valve Adapter Figure 401
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28-16-06 ALL ú ú 02 Page 404 ú Feb 10/94 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL
C. Access (1) Location Zones 545 Inbd Main Tank (Part), Mid Spar to Rear Spar, Left 573 Rear Spar to Inbd Aileron Leading Edge, Left 645 Inbd Main Tank (Part), Mid Spar to Rear Spar, Right 673 Rear Spar to Inbd Aileron Leading Edge, Right
(2) Access Panels 545BB Fuel Tank Access Panel 573AB Inbd Aileron Actuator Access Panel 645BB Fuel Tank Access Panel 673AB Inbd Aileron Actuator Access Panel
S 114-029 (1) Prepare these surfaces for an electrical surface bond (SWPM 20-20-00):
(a) Mating surface of the index plate and valve actuator.
(b) Mating surfaces of the bonding jumper and bonding jumper tab.
(c) AIRPLANES WITHOUT PRIMER BETWEEN THE REAR SPAR AND THE ADAPTER PLATE; Mating surface of the rear spar and adapter plate.
NOTE: If the rear spar has a protective finish (primer ____ coating) under the adapter plate, it is not necessary to do this step. S 414-050 (2) Do these steps to install the adapter plate:
(a) Lubricate the new O-ring for the adapter plate with the petrolatum.
(b) Install the O-ring in the groove on the adapter plate.
(c) Make sure the mating surface of the adapter plate is free from any petrolatum squeeze out.
(d) Put the shaft through the spar opening and engage the splines of the shaft and the valve body.
(e) Align the shaft to go through the shaft support clamp.
(f) Engage the splines of the shaft and the valve body.
1) FOR THE LEFT WING INSTALLATION; Put the OPEN/CLOSED nomenclature inboard of the valve centerline. 2) FOR THE RIGHT WING INSTALLATION; Put the OPEN/CLOSED nomenclature inboard of the valve centerline. (g) Install the bolts and the washers (4 locations) that attach the adapter to the spar. 1) Tighten the bolts. 2) Attach lockwire to the bolts. EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-16-06 ALL ú ú 01 Page 405 ú Jun 18/00 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL S 824-013 (3) Do this task to align the adapter shaft: Adapter Shaft Alignment (AMM 28-00-01/201).
(4) Install the valve actuator (AMM 28-16-04/401).
NOTE: Make sure the electrical resistance between the actuator and ____ the rear spar is not more than 0.008 ohms (SWPM 20-20-00). S 394-031 (5) AIRPLANES WITHOUT PRIMER BETWEEN THE REAR SPAR AND THE ADAPTER PLATE; Do these steps:
(a) Apply a fillet seal of BMS5-95 sealant around the periphery of the adapter plate (AMM 28-11-00/801).
(b) Apply these protective finishes to any bare areas of the rear spar not covered with the sealant: 1) Alodine 600 (AMM 51-21-04/701) 2) BMS 10-20 Type II primer (AMM 28-11-00/801).
S 864-014 (6) Do these steps to close the fuel tank:
(a) Close and go out of the fuel tank (AMM 28-11-00/201). 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 燃油 FUEL 2
