(b)  
All of the O-ring grooves on the manifold

 (c)  
All of the machined surfaces on the fueling hose adapter

 (d)  
All of the O-ring grooves on the fueling hose adapter.

 S 434-002
 (2)  
Put a new O-ring, lightly lubricated with fuel, into the groove on the fueling hose adapter.

 (3)
Put the valve of the fueling hose adapter into the manifold.

 S 424-003
 S 424-004
 CAUTION: DO NOT LOOSEN THE O-RING OR PUSH IT OUT OF ITS CORRECT SHAPE
_______ WHEN YOU TURN THE FUELING HOSE ADAPTER. A FUEL LEAK CAN EASILY OCCUR.
 (4)  Turn the fueling hose adapter to align the bolt holes with the holes in the manifold.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (5)  S 434-005Install the mounting screws for the fueling hose adapter. (a) Tighten all of the screws equally. (b) Make sure the flange of the fueling hose adapter is parallel to the flange of the manifold during this procedure.
 (6)  S 714-006Make sure the poppet valve operates correctly. (a) Push the poppet valve and make sure the valve opens freely. (b) Make sure the poppet valve closes easily when you release it again.
 (7)  S 434-019Install the cap on the receptacle.
 (8)  S 864-018Close these circuit breakers and remove the DO-NOT-CLOSE tags: (a) P6 Main Power Distribution Panel 1) EP GND FUELING (for the refuel shutoff valve)
 (9)  S 414-008Close the access door (6540) for the refuel station (the P15 panel).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 FUELING RECEPTACLE MANIFOLD - REMOVAL/INSTALLATION
__________________________________________________
 1. General
_______
 A. This procedure has two tasks:
 (1)  
A task to remove the fueling receptacle manifold

 (2)  
A task to install the fueling receptacle manifold.

 TASK 28-21-21-004-001
 2. Fueling Receptacle Manifold Removal
___________________________________
 A. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 28-21-11/401, Fueling Receptacle

 (3)  
AMM 28-21-51/401, Fueling Shutoff Valve

 (4)  
AMM 28-23-11/401, Defueling Valve

 B. Access
 (1)  
Location Zone
 402 Right Wing Outboard Leading Edge

 (2)  
Access Panels
 6535 Defueling Access Panel
 6537 Slat Access Panel
 6540 Refueling Station Access Door

 C. Procedure
 S 864-002
 (1)
Remove the electrical power from the airplane (AMM 24-22-00/201).

 S 864-003

 (2)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P6 Main Power Distribution Panel 1) EP GND FUELING (for the refuel shutoff valves) 2) QTY (for the fuel quantity indicators)
 S 014-004
 (3)  
Open the access door (6540) for the refuel station (the P15 panel) (Fig. 401).

 (a)  Remove the pins that attach the linkage assemblies to the access door.

 (4)  
Remove the access panel, No. 6537, (outboard of the refuel station).

 S 014-006

 (5)  
Remove the refuel quantity indicators from the refuel instrument panel.

 S 014-005
 (a)  Make a mark on the fuel quantity indicators to install them again in the correct position.
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