S 014-008

 (5)  
Put the container below the shutoff valve to catch all unwanted fuel.

 S 034-009

 (6)  
Remove the nuts and washers in the gate and actuator handle assembly.

 S 034-010

 (7)  
Carefully remove the gate and actuator handle assembly from the opening in the front spar.

 S 034-011

 (8)  
Lift the gate and actuator handle assembly fully out of the front spar.

 S 434-038

 (9)  
Make sure you did not loosen the bolts of the port adapter assembly if you are not scheduled to remove the port adapter assembly.

 NOTE: This can occur when you loosen the gate assembly nuts.
____
 TASK 28-23-11-404-002
 3.  Defueling Valve Gate and Actuator Handle Assembly Installation (Fig. 401)______________________________________________________________
 A. Consumable Materials
 (1)  B00316 Cleaning Solvent - Aliphatic Naphtha TT-N-95
 B. Equipment
 (1)  Container - To hold residual fuel from fuel manifold
 C. Access
 (1)  
Location Zones
 303 Left Wing Inboard Leading Edge
 305 Left Fuel Tank
 403 Right Wing Inboard Leading Edge
 405 Right Fuel Tank

 (2)  
Access Panels
 6535 Defueling Access Panel

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 403 ú Nov 15/91
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A
737-300/400/500MAINTENANCE MANUAL
 D. Procedure
 S 114-016
 (1)  
Clean the O-ring groove in the gate assembly housing and machined surface of the front spar with solvent.

 S 434-017

 (2)  
Install a new O-ring (lightly lubricated with fuel) into the groove on the gate assembly housing.

 S 434-012

 (3)  
Carefully put the gate and actuator handle assembly into the port adapter, through the opening in the front spar.

 S 434-013

 (4)  
Install the nuts and the washers into the gate and actuator housing assembly.

 (a) Tighten the nuts to a torque of 50-70 pound-inches.
 TASK 28-23-11-014-014
 4. Port Adapter Assembly Removal (Fig 401)
_____________________________
 A. Equipment
 (1)  Container - To hold residual fuel from fuel manifold
 B. References
 (1)  
AMM 28-10-00/201, Storage

 (2)  
AMM 28-11-11/401, Wing Fuel Tank Access Panels

 (3)  
AMM 28-23-00/201, Defueling

 C. Access
 (1)  
Location Zones
 303 Left Wing Inboard Leading Edge
 305 Left Fuel Tank
 403 Right Wing Inboard Leading Edge
 405 Right Fuel Tank

 (2)  
Access Panels
 7405 Fuel Tank Access Door (right)

 D. Procedure
 S 864-039
 WARNING: CAREFULLY DO ALL OF THE SAFETY PROCEDURES TO DEFUEL THE FUEL
_______ TANK AND TO GO INTO IT. AN EXPLOSION, BAD INJURIES TO PERSONS, AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  Do these tasks for the applicable fuel tank:
 (a)  "Fuel Tank Defueling" (AMM 28-23-00/201)
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (b)  "Purging (Air Ventilating)" (AMM 28-10-00/201).
 S 014-041
 (2)  
Remove the access panel, No. 3 (7405), for the No. 2 tank (AMM 28-11-11/401) to get access to the aft side of the wing front spar.

 S 024-019

 (3)
Do the task: "Gate and Actuator Handle Assembly Removal".

 S 014-037

 (4)  
Get access to the shutoff valve through the access opening in the fuel tank.

 S 034-020
　
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