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 28-25-00-650-003 To Drain Remaining Fuel from the Wing Tanks and the
Center Tank
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, ....)
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-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
28-12-47-991-001 Fig. 401
**ON A/C 301-399,
28-12-47-991-001-A Fig. 401A
**ON A/C ALL
3. Job Set-up
__________
Subtask 28-12-47-941-050
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 28-12-47-650-052
B. Fuel Configuration
(1) Drain the fuel from the applicable vent surge tank (Ref. TASK 28-25-00-650-003).
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C. Get Access
(1)
Put the access platform below the applicable NACA vent intake 550AB, 650AB.
(2)
Remove the applicable wing access panel (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-002):
-550BB, for the left wing
-650BB, for the right wing.
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
(Ref. Fig. 401/TASK 28-12-47-991-001)
**ON A/C 301-399,
(Ref. Fig. 401A/TASK 28-12-47-991-001-A)
**ON A/C ALL
Subtask 28-12-47-020-050
A. Removal of the NACA Vent Intake
(1)
Remove and discard the cable ties (12).
(2)
Remove the nut (11), the washer (10) and the bolt (5) to disconnect the ends of the bonding strips (4) and (9).
(3)
Remove the nut (6) and the bolt (8) to disconnect the end of the bonding strip (7).
(4)
Remove the bolt (2) and the washer (1).
(5)
Pull the elbow-duct assembly (13) away from the NACA vent intake (14).
NOTE : The elbow-duct assembly (13) stays in the bay between RIB23
____
and RIB24.
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NACA Vent Intake
Figure 401/TASK 28-12-47-991-001
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R NACA Vent Intake
R Figure 401A/TASK 28-12-47-991-001-A
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1 1
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(6)
Remove and discard the O-ring seal (3).
(7)
Remove the access panel 550AB(650AB) as follows: CAUTION : YOU MUST REMOVE AND INSTALL THE BOLTS IN THE SPECIFIED
_______ SEQUENCE. THIS WILL PREVENT DAMAGE TO THE ACCESS PANEL.
(a)
Loosen the bolts (18) in the sequence A thru AF.
(b)
Hold the NACA vent intake (14) 3.0 kg (6.60 lb) and remove the bolts (18). Carefully remove the NACA vent intake from the wing.
(8) Remove the nut (15), the washer (16), the bolt (17) and the bonding strip (4) from the NACA vent intake (14).
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TASK 28-12-47-400-001
Installation of the NACA Vent Intake
WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
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