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)
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28-25-44-991-001 Fig. 401
3. Job Set-up
__________
(Ref. Fig. 401/TASK 28-25-44-991-001) Subtask 28-25-44-941-051
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 28-25-44-650-050
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).
Subtask 28-25-44-010-050
C. Get Access
(1)
Put the access platform in position below the applicable access panel 540AB, 640AB.
(2)
Remove the applicable access panel (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001):
-
FOR 31QM
remove 540AB
-
FOR 32QM
remove 640AB.
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Fuel Drain Valve 31QM(32QM)
Figure 401/TASK 28-25-44-991-001
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1 1 Feb 01/98
1 1
1CES 1
(3)
Get access to the fuel drain valve through the applicable rear spring-loaded cover in RIB 2: FOR 31QM
-
through 540BZ
FOR 32QM
-
through 640BZ.
(4)
Install the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000) to keep the spring-loaded cover open.
4. Procedure
_________
(Ref. Fig. 401/TASK 28-25-44-991-001) Subtask 28-25-44-020-050
A. Removal of the Fuel Drain Valve
(1)
Remove the fuel drain valve (1).
(2)
Remove and discard the O-ring (2).
(3)
Put blanking plugs on the disconnected line ends.
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Installation of the Fuel Drain Valve
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
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
No specific access platform 3.0 m (9 ft. 10 in.)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R Material No. 01-001 USA ASTM-D-1655-93 (JET A-1) FUEL, TURBO (Ref. 20-31-00) Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00)
Material No. 11-004 USA MIL-T-81533
1.1.1TRICHLOROETHANE (METHYL CHLOROFORM)
(Ref. 20-31-00)
Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
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-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
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