(3)
 Close the main door of the right main gear (Ref. TASK 32-12-00-410-001).

 (4) Remove the access platform(s). Subtask 28-23-41-650-051
 B. Refuel the wing and center tanks (Ref. TASK 12-11-28-650-003).
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R

R
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ACTUATOR - CROSSFEED VALVE (5QE) - REMOVAL/INSTALLATION
_______________________________________________________ TASK 28-23-51-000-001 Removal of the Crossfeed Valve Actuator 5QE WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 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 caps
 No specific circuit breaker(s) safety clip(s)

No specific access platform 2.0 m (6 ft. 7 in.) No specific 1 WARNING NOTICE
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 32-12-00-010-001 Open the Main Gear Doors for Access 28-23-51-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 28-23-51-941-051
 A. Aircraft Maintenance Configuration
 (1)
 On the APU section of the overhead panel 25VU, make sure that the APU MASTER SW is in the off position (the ON legend is off).

 (2)
 On the FUEL overhead panel 40VU, make sure that all L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).

 1EFF : ALL 1 28-23-51Page 401 1 1 Aug 01/04 1 1 1CES 1

R (3) Put the WARNING NOTICE in position: - on the overhead panel 25VU, to tell persons not to operate the APU MASTER SW, - on the FUEL panel 40VU, to tell persons not to operate the fuel system, - on the APU FIRE panel 20VU, to tell persons not to operate the fire extinguishing system.
 Subtask 28-23-51-865-050
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FUEL/X FEED/VALVE/MOT1 2QE A12 121VU FUEL/X FEED/VALVE/MOT2 1QE M24
 Subtask 28-23-51-860-050
 C. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 On the FUEL panel 40VU, push the X FEED pushbutton switch (the ON and OPEN legends come on).

 (3)
 De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 Subtask 28-23-51-010-050
 D. Get Access
 (1)
 Open the LH Main Landing-Gear (MLG) door to get access to the crossfeed valve actuator (Ref. TASK 32-12-00-010-001).

 (2)
 Put the access platform in position at the LH MLG door.

 1EFF : ALL 1 28-23-51Page 402 1 1 Aug 01/04 1 1 1CES 1 Subtask 28-23-51-865-054

 E. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FUEL/X FEED/VALVE/MOT1 2QE A12 121VU FUEL/X FEED/VALVE/MOT2 1QE M24
 4. Procedure
_________
 (Ref. Fig. 401/TASK 28-23-51-991-001) Subtask 28-23-51-020-052
 A. Removal of the Crossfeed Valve Actuator (5QE)
 (1) Disconnect the electrical connectors (4) from the crossfeed valve actuator (5).
 NOTE : Identify the electrical connectors before you disconnect them
____ to prevent an incorrect condition when you reconnect them.
 (2)
 Put blanking caps on the disconnected electrical connectors.

 (3)
 Loosen the screw and remove the V-clamp (3) which attaches the crossfeed valve actuator (5) to the mounting flange (1).

 (4)
 Remove the crossfeed valve actuator (5) from the mounting flange (1).

 (5)
 Remove and discard the O-ring (2) from the mounting flange (1).

 (6)
　
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