(3)
 Release the nut (3) from the jet pump (1) and move it back along the

 pipe (4).

 (4)
 Release the nut (14) from the pipe (16) and move it back along the jet pump (1).

 (5)
 Remove the bolts (8) and the washers (9).

 (6)
 Remove the jet pump (1).

 (7)
 Put a blanking cap on the pipe (16).

 (8)
 Remove and discard the O-ring (2) from the pipe (4).

 (9)
 Put a blanking cap on the pipe (4).

 (10)
 Remove and discard the O-ring (13) from the jet pump (1).

 (11)
 Remove the retaining ring (15) and the nut (14) from the jet pump (1).

 (12)
 Install blanking caps on each end of the jet pump (1).

 1EFF : 301-399, 1 28-26-41Page 405 1 1 May 01/04 1 1 1CES 1 TASK 28-26-41-400-001

 Installation of the Center Tank Jet Pump 157QM(158QM)
 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 1.65 m (5 ft. 5 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. 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)
 1EFF : 301-399, 1 28-26-41Page 406 1 1 May 01/04 1 1 1CES 1

 C. Expendable Parts -------------------------------------------------------------------------------
FIG.ITEM --------- |DESIGNATION ---------------------------------------- |IPC-CSN------------------------------
2  O-ring  28-26-05 04 -040
 13  O-ring  28-26-05 04 -120
 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 28-26-00-710-001 Operational Test of the Main Transfer System 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) 28-26-41-991-001 Fig. 401
 3. Job Set-up
__________
 Subtask 28-26-41-941-052
 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.

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

 1EFF : 301-399, 1 28-26-41Page 407 1 1 May 01/04 1 1 1CES 1 Subtask 28-26-41-860-050

 B. Aircraft Maintenance Configuration
 (1)
 Make sure that the center tank is defueled (Ref. TASK 28-25-00-650-001).

 (2)
 Make sure that the remaining fuel has been drained from the center tank (Ref. TASK 28-25-00-650-003).

 (3)
 Make sure that the applicable MLG door is open (Ref. TASK 32-12-00-010-001).

 (4)
 Make sure that the GROUND LOCK SLEEVE is installed on the applicable MLG door actuating-cylinder.
　
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