VALVE BODY
ADAPTER PLATE
B

INDEX MARKS ON THE VALVE BODY
ADAPTER SHAFT
INDEX MARKS C
Fuel Crossfeed Valve Adapter
Figure 401 (Sheet 2)

L56376
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A
747-400
MAINTENANCE MANUAL

 (2)
AMM 12-11-01/301, Fuel Servicing

 (3)
AMM 27-81-00/201, Leading Edge Flap System

 (4)
AMM 28-00-01/201, Adapter Shaft Alignment

 (5)
AMM 28-11-00/201, Fuel Tanks

 (6)
AMM 28-11-00/801, Fuel Tanks

 (7)
AMM 28-22-00/501, Engine Fuel Feed System

 (8)
AMM 28-22-02/401, Fuel Crossfeed Valve Actuator

 (9)
AMM 51-21-04/701, Alodine Coating

 (10)
 SWPM 20-20-00, Electrical Ground and Bond

 B.
Equipment

 (1)
Bonding Meter (SWPM 20-20-00) Approved for use in fuel vapor areas

 C.
Consumable Materials

 (1)
A00247 Sealant - Corrosion Protection, BMS 5-95

 (2)  
C00064 Coating - Alodine 600 Chemical conversion coating for aluminum or aluminum alloy, (MIL-C-5541).

 (3)
C00307 Corrosion Resistant Finish - BMS 10-20 Type II

 (4)
D00128 Petrolatum - Technical, VV-P-236

 D.
Parts

 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Shaft - Adapter (Inbd) | 28-22-11 | 01 | 55 | | | | Shaft - Adapter (Outbd) | | | 10 | | | 6 | O-ring (Packing) | | | 25 | | | | | | | 70 | 2......…........…...................................…..........….....….........1
 E. Access
 (1)  Location Zones 521 Leading Edge to Front Spar, Left 542 Inbd Main Tank (Part), Front Spar to Mid Spar, Left 551 Outbd Main Tank (Part), Front Spar to Mid Spar, Left 621 Leading Edge to Front Spar, Right 642 Inbd Main Tank (Part), Front Spar to Mid Spar, Right 651 Outbd Main Tank (Part), Front Spar to Mid Spar, Right
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A
747-400
MAINTENANCE MANUAL

 (2)  
Access Panels
 545AB Fuel Tank Access Door
 546AB Fuel Tank Access Door
 645AB Fuel Tank Access Door
 646AB Fuel Tank Access Door

 F.
Procedure

 S 144-027
 (1)  
Prepare these components for an electrical surface bond
 (SWPM 20-20-00):

 (a)  
Mating surfaces of the index plate (2) and valve actuator.

 (b)  
Mating surfaces of the bonding jumper and bonding jumper tab.

 (c)  
AIRPLANES WITHOUT PRIMER BETWEEN THE SPAR AND THE ADAPTER PLATE; Mating surface of the front spar and adapter plate (1) (View B).

 NOTE: If the spar has a protective finish (primer coating)
____ under the adapter plate, it is not necessary to do this step.
 S 424-041
 (2)
Do these steps to prepare the adapter plate (1) for installation:

 (a)  
Lubricate the new O-ring (6) with petrolatum.

 (b)  
Install a new O-ring (6) in the groove on the adapter (1).

 (c)  
Make sure the mating surface of the adapter plate (1) is free from any petrolatum squeeze out.

 S 424-040
 (3)  
Do these steps to install the adapter shaft (1):

 (a)  
Put the shaft (1) into the fuel tank through the opening in the front spar.

 (b)  
From in the fuel tank, engage the splines of the shaft (1) and the valve body.

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