S 437-013

 (3)  
Connect the fuel-feed hose at the strut.

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 28-22-00
 ALL  ú ú 01 Page 703 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 ENGINE FUEL SHUTOFF VALVE - REMOVAL/INSTALLATION
________________________________________________
 1.  General_______
 A.  This procedure has four tasks:
 (1)  
The removal of the valve actuator assembly and the gate assembly

 (2)  
The installation of the valve actuator assembly and the gate assembly

 (3)  
Removal of the port adapter assembly

 (4)  
Installation of the port adapter assembly.

 B.  The procedure to remove the shutoff valve for each engine is the same. The procedure to install the shutoff valve for each engine is also the same. The only difference between the shutoff valves is their location. The shutoff valve on the No. 1 engine fuel is attached to the front spar on the left wing. The shutoff valve on the No. 2 engine fuel is attached to the front spar on the right wing.
 C.  The shutoff valve for the engine fuel has three primary assemblies:
 (1)  
The valve actuator assembly (referred to as the actuator assembly)

 (2)  
The gate assembly

 (3)  
The port adapter assembly.

 D.  The actuator assembly and the gate assembly are different parts, but it is easier to remove them from the airplane as an assembled unit. This is because of the limited access. You can replace the actuator assembly or the gate assembly after the assembled unit is removed from the airplane. It is also easier to install the actuator and gate assembly in the airplane as a unit.
 E.  You must remove the actuator assembly and the gate assembly to remove the port adapter assembly. It is also necessary to defuel the applicable fuel tank fully.
 F.  There must be less than 5360 pounds of fuel in the applicable tank to replace the valve actuator assembly and the gate assembly.
 TASK 28-22-11-004-003
 2.  Shutoff Valve Actuator and Gate Assembly Removal________________________________________________
 A.  Equipment
 (1)  
Bonding Meter - Avtron T477W, Avtron Manufacturing Co.

 (2)  
Container - To hold residual fuel from fuel manifold

 B.  References
 (1)  WDM 28-21-01
 C.  Access
 (1)  Location Zones
 305 Left Fuel Tank
 303 Left Wing Inboard Leading Edge
 405 Right Fuel Tank
 403 Right Wing Inboard Leading Edge

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 28-22-11
 ALL  ú ú 01 Page 401 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
ENGINE NO.2 
1  NO. 2 ENGINE FUEL SHUTOFF VALVE SHOWN, NO. 1 ENGINE FUEL SHUTOFF VALVE OPPOSITE.  SEE  A  1 

WING FRONT SPAR 
SEE  B  VALVE POSITION INDICATOR 
ENGINE FUEL SHUTOFF VALVE  MOTOR 
FWD 
A  GEAR TRAIN 
PORT ADAPTER ASSEMBLY  THERMAL RELIEF VALVE  BOLTS MOUNTING ASSEMBLY ACTUATOR  VALVE POSITION INDICATOR 
GATE SEAL  HOUSING 
SEAL 
HOUSING SEAL  SEAL CARRIER 0-RING WING FRONT SPAR  B  ROLLERSLIDING GATE ACTUATOR AND GATE ASSEMBLY ATTACHING NUTS PORT ADAPTER ASSEMBLY MOUNTING BOLTS  ACTUATING ARM HOUSING 
Figure 401 Engine Fuel Shutoff Valve Installation 

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 ALL  ú ú 01 Page 402 ú Nov 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
　
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