(a)
131AZ
(b)
131BZ
(c)
132AZ
(d)
132BZ
S 034-004
(4)
Disconnect the crossfeed manifold tube from each side of the valve body.
S 034-005
(5)
Remove and discard the O-ring and the two retaining rings from the end of each crossfeed manifold tube.
S 034-006
(6)
Remove the bolt, washer, and nut which attach the ground strap to the valve body.
S 034-007
(7)
Remove the bolt, washer, and nut which attach the support arm to the valve body.
S 024-008
(8)
Remove the valve body.
TASK 28-22-04-424-009
3. Fuel Flow Limiting Valve Installation (Fig. 401)_____________________________________
A. Equipment
(1)
Bonding Meter (SWPM 20-20-00) Approved for use in fuel vapor area.
B.
Consumable Materials
(1)
D00128 Petrolatum - Technical, VV-P-206
C.
References
(1)
AMM 12-11-01/301, Fuel Tanks
(2)
AMM 28-00-00/201, Fuel System
(3)
AMM 28-11-09/401, Spanwise Beam Access Door
(4)
AIPC 28-22-53 Fig. 1
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28-22-04
ALL ú ú 01 Page 402 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FUEL FLOW LIMITING VALVE
SEE A
NUT
WASHER SUPPORT ARM BOLT REAR SPAR FOR THE CENTER TANK
GROUND STRAP
BOLT
WASHER NUT BODY VALVE O-RING COUPLING NUT
CROSSFEED MANIFOLD TUBE
A FUEL FLOW LIMITING VALVE RETAINING RINGS
Fuel Flow Limiting Valve Figure 401
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28-22-04
ALL ú ú 01 Page 403 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(5)
SWPM 20-20-00, Electircal Bond and Ground
D.
Access
(1)
Location Zones
131 Center Section Wing Box, Left
132 Center Section Wing Box, Right
(2)
Access Panels
131AZ Spanwise Beam Access Door
131BZ Spanwise Beam Access Door
132AZ Spanwise Beam Access Door
132BZ Spanwise Beam Access Door
E.
Procedure
S 434-020
CAUTION: DO NOT CHANGE THE SHAPE OF THE RETAINING RING WHILE YOU INSTALL
_______ IT. IF THE SHAPE OF THE RING CHANGES, LEAKS OR DAMAGE TO THE RING COULD OCCUR.
(1)
Put a new retaining ring on the end of each crossfeed manifold tube to hold the nut on the tube.
S 434-012
(2)
Lubricate the new O-rings with petrolatum.
S 434-011
(3)
Put an O-ring on the end of each crossfeed manifold tube.
S 434-013
CAUTION: DO NOT CHANGE THE SHAPE OF THE RETAINING RING WHILE YOU INSTALL
_______ IT. IF THE SHAPE OF THE RING CHANGES, LEAKS OR DAMAGE TO THE RING COULD OCCUR.
(4)
Put one more new retaining ring on the end of each crossfeed manifold tube.
S 434-014
(5)
Hold the valve body in its position and put the crossfeed manifold tubes into the valve fittings.
S 434-015
(6)
Attach the support arm to the valve body with a bolt, washer, and nut.
S 434-016
(7)
Install the bonding jumper to the valve body with a bolt, washer, and nut (SWPM 20-20-00).
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