(4)
 Remove the refuel valve (Ref. TASK 28-25-51-000-002).

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 4. Procedure
_________
 (Ref. Fig. 402/TASK 28-25-52-991-002) Subtask 28-25-52-020-053
 A. Removal of the Refuel Valve Canister (88QM)
 (1)
 Remove the nut (5), the screw (7), the washer (6) and disconnect the bonding straps (4) and (8).

 (2)
 Remove the bolts (1), the washers (2) and disconnect the elbow (17).

 (3)
 Remove and discard the O-ring (3).

 (4)
 Remove the bolt (11), the washer (12) and disconnect the elbow (10).

 (5)
 Remove and discard the O-ring (9).

 (6)
 Put blanking plugs on the disconnected line ends.

 (7)
 Remove the screws (15) and the spacer (16).

 (8)
 Remove the refuel valve canister (13).

 (9)
 Remove and discard the O-ring (14).

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 Refuel Valve Canister 88QM Figure 402/TASK 28-25-52-991-002
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 TASK 28-25-52-400-002
 Installation of the Refuel Valve Canister 88QM
 WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING

_______
 NOTICES ARE IN POSITION.

 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
 No specific warning notice

 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 01-001  USA ASTM-D-1655-93 (JET A-1) FUEL, TURBO (Ref. 20-31-00) Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) Material No. 11-026 GB DEF-STAN 68-148/1 R SOLVENT GENERAL PURPOSE (Ref. 20-31-00) Material No. 19-003 USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
 1EFF : ALL 1 28-25-52Page 418 1 1 May 01/02 1 1 1CES 1 C. Expendable Parts

 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
R 3 O-ring 28-25-05 02 -230 R 9 O-ring 28-25-05 02 -230 14 O-ring 28-25-05 04 -050
 D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 20-28-00-912-002 Electrical Bonding of Components With Conductive
 Bolts and Screws in the Tanks 28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 28-10-00-910-002 Access to the Fuel Tanks and the Work Areas 28-25-00-650-001 Pressure Defuel 28-25-00-650-003 To Drain Remaining Fuel from the Wing Tanks and the
 Center Tank
 28-25-00-869-001 Fuel Transfer
 28-25-51-000-002 Removal of the Refuel Valve 10QU
 28-25-51-400-002 Installation of the Refuel Valve 10QU
 32-12-00-010-001 Open the Main Gear Doors for Access
 32-12-00-410-001 Close the Main Gear Doors after Access
 57-17-11-000-001 Removal of the Covers 147AZ (148AZ)
 57-17-11-400-001 Installation of the Covers 147AZ (148AZ)
 28-25-52-991-002 Fig. 402

 3. Job set up
__________
 Subtask 28-25-52-941-054
 A. Safety Precautions
 WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
 (1)
 You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001) when you do work in a fuel tank.

 (2)
 Make sure that the safety barriers are in position.

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 (3) Make sure that the warning notice is in position to tell persons not to operate the main gear doors.
 Subtask 28-25-52-860-053
 B. Aircraft Maintenance Configuration
 (1)
 Make sure that the applicable fuel tank is defueled (Ref. TASK 28-25-00-650-001).
　
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