(6)
 Tighten, by hand, the fuel-pipe connector nut (5).

 (7)
 Do a bonding check of the fuel-pump suction valve (3) (Ref. TASK 20-28-00-912-002).

 (8)
 Apply SEALANTS (Material No. 09-007) to each end of the bolts (1) and (2), and to the nuts (8).

 1EFF : ALL 1 28-21-42Page 411 1 1 Aug 01/05 1 1 1CES 1 Subtask 28-21-42-410-050

 C. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Remove the HOOK-COVER (RIB2-SURGE DOORS) from the RIB 2 surge door.

 (3)
 Close the applicable surge door 540BZ(640BZ).

 (4)
 Install the applicable wing access panel 540AB(640AB) (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-400-001).

 Subtask 28-21-42-710-050
 D. Operational Test
 (1) Do an operational test of the fuel flow through the pumps by gravity feed (Ref. TASK 28-21-00-710-006).
 (2) Make sure that the fuel-pump suction valve (3) operates correctly. Subtask 28-21-42-650-051
 E. Fuel Configuration
 (1) Refuel, defuel or transfer fuel as necessary (Ref. TASK 12-11-28-650-003), (Ref. TASK 28-25-00-650-001) or (Ref. TASK 28-25-00-869-001).
 5. Close-up
________ Subtask 28-21-42-942-050
 A. Removal of Equipment
 (1)
 Remove the safety barriers.

 (2)
 Remove the warning notice(s).

 (3)
 Remove the access platform(s).

 (4)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 1EFF : ALL 1 28-21-42Page 412 1 1 May 01/05R 1 1 1CES 1

 CHECK VALVE - FUEL PUMP (33QM,34QM,35QM,36QM,37QM,38QM,149QM,150QM,151QM,152QM)
_______________________________________________________________________________
 REMOVAL/INSTALLATION
____________________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 TASK 28-21-43-000-001 Removal of the Fuel-Pump Check-Valve 33QM(36QM), 34QM(35QM) 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 blanking plugs
 No specific circuit breaker(s) safety clip(s)
 No specific safety barriers
 No specific access platform 2.8 m (9 ft. 2 in.)
 98D57004014000 1 HOOK-COVER (RIB2-SURGE DOORS)

 1EFF : ALL 1 28-21-43Page 401 1 1 Aug 01/05 1 1 1CES 1

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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
 57-27-11-000-001  Removal of the Access Panel (540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
 28-21-43-991-001  Fig. 401
 3. Job Set-up
__________ Subtask 28-21-43-941-054
 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) Put the safety barriers in position. Subtask 28-21-43-650-050
 B. Fuel Configuration
 (1)
 Defuel the applicable fuel tank (Ref. TASK 28-25-00-650-001).

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

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-21-43Page 402 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1 Subtask 28-21-43-865-050

 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/L WING TK/PUMP2 SPLY 7QA N26 121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 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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