(3)
 Remove and discard the O-rings (2) and (3).

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 Jet Adaptor - Wing Tank
 Figure 403/TASK 28-21-53-991-003

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 Jet Adaptor - Center Tank
 Figure 404/TASK 28-21-53-991-004

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 Installation of the Jet Adaptor Assembly
 WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
 -
THE FLIGHT CONTROLS

 -
THE FLIGHT CONTROL SURFACES

 -
THE LANDING GEAR AND THE RELATED DOORS

 -COMPONENTS THAT MOVE.
 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 soft bristled brush No specific warning notices No specific access platform 2.5 m (8 ft. 2 in.) 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. 11-004  USA MIL-T-81533 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM) (Ref. 20-31-00)
 Material No. 19-003  USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-21-53Page 430 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------

Material No. 19-010  USA AMS 5687 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA (Ref. 20-31-00)
 Material No. 19-018  USA AMS 5687 LOCKWIRE 0.6 MM (Ref. 20-31-00)
 C. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
2 O-ring 28-21-53 01 -030 3 O-ring 28-21-53 01 -020
 D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-11-28-650-003 Pressure Refuel with Automatic Control 27-50-00-866-008 Extension of the Flaps on the Ground 27-50-00-866-009 Retraction of the Flaps on the Ground 28-00-00-910-001 Fuel Safety Procedures 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 28-21-53-991-003 Fig. 403 28-21-53-991-004 Fig. 404 28-21-53-991-005 Fig. 405
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 3. Job Set-up__________
 Subtask 28-21-53-941-060
 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 28-00-00-910-001) when you do work on the fuel system.

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

 (3)
 Make sure that the warning notices are in the correct position:

 (a)
 For the wing tank, on the slat/flap control lever to tell persons not to operate the flight control surfaces.

 (b)
 For the center tank, on the applicable access panel 195BB(196BB) to tell persons not to operate the MLG doors.

 Subtask 28-21-53-865-058
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/L WING TK/PUMP2 SPLY 7QA N26 121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 121VU FUEL/CTR TK/PUMP2 SPLY 30QA P26 121VU FUEL/CTR TK/PUMP1 SPLY 29QA P23 121VU FUEL/R WING TK/PUMP2 SPLY 8QA Q26 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23 123VU L WING TK/PUMP 1/STBY SPLY 11QA AD12 123VU R WING TK/PUMP 1/STBY SPLY 12QA AE12
　
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