S 437-013
(3)
Connect the fuel-feed hose at the strut.
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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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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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A
737-300/400/500MAINTENANCE MANUAL
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