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 28-15-41-000-001 Removal of the Transfer Valve 27QM (29QM), 28QM
(30QM) 28-15-51-000-001 Removal of the Actuator 9QP(10QP) 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 28-15-42-941-055
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 28-15-42-865-050
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 28-15-42-650-050
C. 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).
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Transfer Valve Drive
Figure 401/TASK 28-15-42-991-001
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D. Get Access
(1)
Put the access platform below the applicable zones 540(640) and 522(622).
(2)
Remove the applicable wing access panels (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-002):
-
FOR 70QM
remove 540JB, 540KB
-
FOR 72QM
remove 640JB, 640KB.
(3)
Remove the applicable leading-edge access-panels:
-
FOR 70QM
remove 522KB
-
FOR 72QM
remove 622KB.
4. Procedure
_________
(Ref. Fig. 401/TASK 28-15-42-991-001) Subtask 28-15-42-020-050
A. Removal of the Transfer Valve Drive
(1)
Remove the applicable transfer valve actuator (8) (Ref. TASK 28-15-51-000-001).
(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).
(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 70QM(72QM)
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
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