PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) R Material No. 11-026 GB DEF-STAN 68-148/1 R SOLVENT GENERAL PURPOSE (Ref. 20-31-00)
Material No. 19-003 USA AMS 3819
LINT-FREE COTTON CLOTH (Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
O-ring 28-25-51 01 -010
1EFF : ALL 1 28-25-51Page 414 1 1 Nov 01/02 1 1 1CES 1 1EFF : ALL 1 28-25-51Page 415 1 1 Nov 01/02 1 1 1CES 1 1EFF : ALL 1 28-25-51Page 416 1 1 Nov 01/02 1 1 1CES 1
D. Referenced Information
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REFERENCE DESIGNATION
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R R 12-11-28-650-003 Pressure Refuel with Automatic Control 20-28-00-912-004 Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-28-10-00-910-001 Safety Procedures When You Do Work in a Fuel Tank 28-25-00-650-001 Pressure Defuel 28-25-00-869-001 Fuel Transfer 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access 28-25-51-991-002 Fig. 402
3. Job Set-up__________
Subtask 28-25-51-941-061
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) Make sure that the safety barriers are in position.
(3) Make sure that the warning notice is in position to tell persons not to operate the main gear doors.
Subtask 28-25-51-860-052
R B. Aircraft Maintenance Configuration
R (1) Make sure that the main gear doors are open (Ref. TASK 32-12-00-010-001).
R (2) Make sure that the GROUND LOCK SLEEVE (460005835) is on the applicable main gear door actuator.
R (3) Make sure that the access platform is in position below the refuel valve (2).
Subtask 28-25-51-865-057
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/RFL/DFL/SPLY 2QU L24 121VU FUEL/RFL/DFL/XFR/DEFUEL/VALVE 1QU L23
4. Procedure_________
(Ref. Fig. 402/TASK 28-25-51-991-002)
Subtask 28-25-51-420-055
R R A. Preparation for Installation
R R (1) Clean the component interface and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interface and/or the adjacent area.
(4) Lubricate the new O-ring (9) and the internal surface of the valve canister with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
(5) Install the O-ring (9) on the refuel valve (2).
Subtask 28-25-51-420-051
B. Installation of the Refuel Valve 10QU
(1) Install the refuel valve (2) in the valve canister.
(2) Install and tighten the nuts (3).
(3) Use the screw (7), the nut (4) and the washers (5) and (8) to attach the bonding strap (1) to the refuel valve (2) (Ref. TASK 20-28-00-912-004).
(4) Remove the blanking cap from the electrical connector (6).
(5) Install the electrical connector (6).
Subtask 28-25-51-865-055
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1QU, 2QU.
Subtask 28-25-51-710-053
D. Test
(1) To test the refuel valve:
-refuel the center tank (Ref. TASK 12-11-28-650-003) or
R - transfer fuel into the center tank from the wing tanks (Ref. TASK 28-25-00-869-001).
(2) Make sure there are no leaks from the refuel valve.
5. Close-up
________
Subtask 28-25-51-650-050
A. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. TASK 12-11-28-650-003), (Ref. TASK 28-25-00-650-001) or (Ref. TASK 28-25-00-869-001).
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