28-16-02
ALL ú ú 01 Page 404 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 28-16-02-404-010
3. Reserve Tank Transfer Valve Body Installation (Fig. 401)
_____________________________________________
A. Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Nut | 28-16-03 | 01 | 30 | | | 2 | Washer | | | 25 | | | 3 | Bolt | | | 20 | | | 4 | Mounting Bracket | | | 15 | | | 6 | Valve Body | 28-16-02 | 02 | 10 | | | 7 | Packing | 28-16-65 | 01 | 190 | | | 9 | Washer | 28-16-02 | 02 | 20 | | | 10 | Bolt | | | 15 | 2......…........…...................................…..........….....….........1
B. References
(1)
AIPC 28-16-02, Fig. 2
(2)
AIPC 28-16-03, Fig. 1
(3)
AIPC 28-16-65, Fig. 1
(4)
AMM 28-00-00/201, Fuel Systems
(5)
AMM 27-51-00/201, Trailing Edge Flap System
(6)
AMM 28-11-00/201, Fuel Tanks
(7)
AMM 51-21-04/701, Alodine Coating
(8)
SWPM 20-20-00, Electrical Bonds and Grounds
C.
Access
(1)
Location Zones 552 Outbd Main Tank (Part), Mid Spar to Rear Spar, Left 652 Outbd Main Tank (Part), Mid Spar to Rear Spar, Right
(2)
Access Panels
552GB Fuel Tank Access Door
652GB Fuel Tank Access Door
D.
Procedure
S 424-034
(1)
Do these steps to prepare the replacement valve body (6) for the installation:
(a)
Prepare these components for an electrical surface bond (SWPM 20-20-00) (View B): 1) Mating surface of the valve body (6) 2) Mating surface of the mounting bracket (4) at the valve
body
3) Mating surfaces of the mounting bracket (4) (four locations) at the forward and aft support brackets (11) (four locations)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-16-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b)
Position the bolts (10) and the washers (9) (four locations) that attach the valve body (6) to the mounting bracket (4) (View B).
NOTE:____Install the bolts before you go into the fuel tank. Do not tighten the bolts.
(c)
Apply alodine 600 to any bonding areas not covered by the electrical faying surfaces (AMM 51-21-04/701).
S 944-032
(2)
Go into the fuel tank.
S 424-035
(3)
Do these steps to install the valve body:
(a)
Prepare the mating surfaces of the forward and aft support brackets (11) for an electrical surface bond (SWPM 20-20-00) (View B).
(b)
Put the valve body (6) and the mounting bracket (4) in position.
(c)
Engage the splines of the adapter shaft (5) and the valve body (6).
(d)
Make sure the index marks on the shaft and the valve body align (View C).
(e)
Position the bolts (1), washers (2), and nuts (3) (four locations) that attach the mounting bracket (4) to the support brackets (View A).
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