(2)
 Drain the remaining fuel from the center tank (Ref. TASK 28-25-00-650-003).

 Subtask 28-25-42-010-053
 C. Get Access
 (1)
 Open the RH MLG door (Ref. TASK 32-12-00-010-001).

 (2)
 Make sure that the GROUND LOCK SLEEVE is installed on the RH MLG door actuating-cylinder.

 (3)
 Put the access platform in position below the access panel 148AZ.

 (4)
 Remove the access panel 148AZ (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-17-11-000-001).

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 4. Procedure
_________
 (Ref. Fig. 402/TASK 28-25-42-991-002) Subtask 28-25-42-020-051
 A. Removal of the Refuel Diffuser Assembly - Center Tank
 (1)
 Remove the bolt (3) and the washer (4) and disconnect the bonding strip (1).

 (2)
 Fully loosen the nut (2).

 (3)
 Remove the bolts (7) and (11) with the washers (8) and (10).

 (4)
 Carefully remove the diffuser assembly (9) from the pipe assembly, together with the restrictor (6) and the O-ring (5).

 (5)
 Remove the restrictor (6) and discard the O-ring (5).

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 Refuel Diffuser Assembly, Center Tank.
 Figure 402/TASK 28-25-42-991-002
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1  1  May 01/04
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 TASK 28-25-42-400-002
 Installation of the Refuel Diffuser Assembly - Center Tank
 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 No specific access platform 3.5 m (11 ft. 6 in.)
 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. 09-001 USA MIL-S-8802 TYPE I CLASS A FUEL TANK SEALANTPOLYSULFIDE (Ref. 20-31-00) Material No. 11-026 GB DEF-STAN 68-148/1 SOLVENT GENERAL PURPOSE (Ref. 20-31-00) Material No. 19-003 USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
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 C. Expendable Parts -------------------------------------------------------------------------------
FIG.ITEM --------- |DESIGNATION ---------------------------------------- |IPC-CSN------------------------------
5  O-ring  28-25-05 02 -230
 D. Referenced Information
 ------------------REFERENCE  -------------------------------DESIGNATION ------------------------------

-------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 20-28-00-912-006 Electrical Bonding of Pipes 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 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) 28-25-42-991-002 Fig. 402
 3. Job Set-up
__________
 Subtask 28-25-42-941-055
 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)
 Put the safety barriers in position.

 (3)
 Make sure that the warning notice is in position to tell persons not to operate the MLG doors.
　
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