747-400
MAINTENANCE MANUAL
NO. 3 RESERVE TANK TRANSFER VALVE ACTUATOR
SEE B
NO. 3 RES. FUEL
TRANSFER
SHUTOFF VALVE
_______CAUTION
FOR THIS INSTALLATION ONLY:
INDEX PLATE DISREGARD "OPEN-CLOSED"
MOUNTING SCREW ADAPTER INDICATION ON ACTUATOR.
(3 LOCATIONS) PLATE ACTUATOR MOUNTING USE ADAPTER PLATE INDICATION
HOLE (4 LOCATIONS) AS TRUE VALVE POSITION.
BACXXXXX XXX
WASHER
(4 LOCATIONS)
ACTUATOR MOUNTING SCREW (4 LOCATIONS)
ELECTRICAL CONNECTOR DV430, DV431
INDEX PLATE
MANUAL OVERRIDE LEVER FWD
BONDING ACTUATOR
JUMPER V430, V431 INBD
NO. 3 RESERVE TANK TRANSFER VALVE ACTUATOR B
Reserve Tank Transfer Valve Actuator Installation Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-16-01
ALL ú ú 01 Page 404 ú Oct 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(4)
AMM 28-16-01/501, Reserve Tank Transfer Valve Actuator
(5)
SWPM 20-20-00, Electrical Bond and Ground
(6)
SSM 28-16-02
(7)
WDM 28-16-12, 28-16-13
C.
Access
(1)
Location Zones
591 Rear Spar to Trailing Edge, Left
691 Rear Spar to Trailing Edge, Right
D.
Procedure
S 114-029
(1)
Prepare these surfaces for an electrical surface bond
(SWPM 20-20-00):
(a)
Faying surface of the index plate and valve actuator.
(b)
Faying surface of the bonding jumper and bonding jumper tab.
S 864-010
(2)
Make sure the manual override lever on the actuator is in the closed position.
S 424-011
(3)
Put the actuator into its position.
(a)
Engage the splined shaft of the actuator with the adapter plate.
S 434-012
(4)
Install the screws and the washers (4 locations) that attach the actuator to the index plate.
(a)
Tighten the cap screws.
CAUTION:_______INSTALL THE LOCKWIRE ON THE MOUNTING SCREWS CORRECTLY. IF YOU DO NOT, THE LOCKWIRE CAN CATCH WITH THE MANUAL OVERRIDE HANDLE AND CAUSE THE VALVE NOT TO OPEN.
(b)
Install the lockwire on the screws.
S 214-026
(5)
Make sure there is sufficient clearance between the manual override lever and the adapter plate.
S 434-014
(6)
Attach the bonding jumper to the lug on the actuator
(SWPM 20-20-00).
(a)
Use the bolt, the washers, and the nut.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-16-01
ALL ú ú 01 Page 405 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 764-030
(7) Measure the bonding resistance between the actuator and the spar (SWPM 20-20-00).
NOTE: The bonding resistance must not be more than 0.008 ohm.
____
S 434-015
(8) Connect the electrical connector to the valve actuator.
NOTE: Refer to the table below for the equipment numbers.
____
~................................................................. | | Equipment Number | | Location ............................ | | Valve | Connector | ................................................................... | No. 2 Reserve Tank - Inbd | V432 | DV432 | | No. 2 Reserve Tank - Outbd | V433 | DV433 | | No. 3 Reserve Tank - Inbd | V430 | DV430 | | No. 3 Reserve Tank - Outbd | V431 | DV431 | 2......................................…...........…..............1
S 714-027
(9)
Make sure the transfer valve for the reserve tank operates correctly (AMM 28-16-01/501).
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