B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-50-00-866-008 Extension of the Flaps on the Ground 27-60-00-866-002 Extension-Retraction of the Spoilers for Maintenance 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 28-15-41-000-001 Removal of the Transfer Valve 27QM (29QM), 28QM
 (30QM) 28-15-51-000-002 Removal of the Actuator 11QP(12QP) 28-25-00-650-001 Pressure Defuel 28-25-00-650-003 To Drain Remaining Fuel from the Wing Tanks and the
 Center Tank
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57-27-11-000-002  Removal of the Access Panel (540HB, 540JB, 540KB, 540LB, 540MB, 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB, 640HB, 640JB, 640KB, ....)
 28-15-42-991-001  Fig. 401
 3. Job Set-up
__________ (Ref. Fig. 401/TASK 28-15-42-991-001) Subtask 28-15-42-941-056
 A. Safety Precautions
 (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)
 Put a warning notice in position to tell persons not to operate the flight controls.

 Subtask 28-15-42-865-051
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FUEL/XFR VALVE1/WING/R 2QP A11 49VU FUEL/XFR VALVE1/WING/L 1QP A10 121VU FUEL/XFR VALVE2/WING/R 4QP M23 121VU FUEL/XFR VALVE2/WING/L 3QP M22
 Subtask 28-15-42-860-052
 C. Aircraft Maintenance Configuration WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
 (1) Extend the flaps fully (Ref. TASK 27-50-00-866-008).
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 (2)
 Make sure that the LOCKING TOOL - FLAP/SLAT CONTROL LEVER (98D27803000000) is on the slat/flap control lever.

 (3)
 Extend the No. 3 spoiler (Ref. TASK 27-60-00-866-002).

 (4)
 Make sure that the COLLAR-SAFETY, SPOILER (98D27604000000) is on the applicable spoiler servo-control.

 Subtask 28-15-42-650-052
 D. 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).

 Subtask 28-15-42-010-051
 E. Get Access
 (1)
 Put the access platform below the applicable zone 540(640).

 (2)
 Remove the applicable wing access panels (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-002):

 -
FOR 71QM
 remove 540JB, 540KB

 -
FOR 73QM
 remove 640JB, 640KB.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 28-15-42-991-001) Subtask 28-15-42-020-051
 A. Removal of the Transfer Valve Drive 71QM(73QM)
 (1)
 Remove the applicable transfer valve actuator (8) (Ref. TASK 28-15-51-000-002).

 (2)
 Hold the transfer valve drive (12) and remove the applicable transfer valve (1) (Ref. TASK 28-15-41-000-001).

 (3)
 Remove the nuts (5) and pull away the actuator mounting (3) to remove the bonding strap (6). Remove and discard the O-ring seals (2).

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 (4)
 Remove the nut (4) and the screw (7), and disconnect the bonding strap (6). Remove the actuator mounting (3).

 (5)
 Remove the bolts (11) and the transfer valve drive (12).

 (6)
 Remove and discard the O-ring seals (9) and (10).

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 Installation of the Transfer Valve Drive 71QM(73QM)
　
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