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 slat controls.
Subtask 28-25-51-860-051
B. Aircraft Maintenance Configuration
(1)
Make sure that the access platform is below the applicable access panel 522JB (622JB).
(2)
Make sure that the applicable access panel 522JB(622JB) is removed.
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C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 5CV B06 121VU FUEL/RFL/DFL/SPLY 2QU L24 121VU FUEL/RFL/DFL/XFR/DEFUEL/VALVE 1QU L23 121VU FLIGHT CONTROLS/SLT/CTL/SYS2 7CV R21
4. Procedure
_________
Subtask 28-25-51-420-054
A. Preparation for Installation
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
(1)
Clean the component interface and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-004).
(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 (5) 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 (5) on the refuel valve (3).
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B. Installation of the Refuel Valve 7QU, (8QU)
(1)
Install the refuel valve (3) in the valve canister.
(2)
Install and tighten the nuts (2).
(3)
Use the screw (6) and nut (7) to attach the bonding strap (4) to the valve (3) (Ref. TASK 20-28-00-912-004).
(4)
Remove the blanking cap from the electrical connector (1).
(5) Install the electrical connector (1). Subtask 28-25-51-865-054
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1QU, 2QU.
Subtask 28-25-51-710-051
D. Test
(1)
To test the refuel valve:
-refuel the applicable tank (Ref. TASK 12-11-28-650-003) or
-transfer fuel into the applicable tank (Ref. TASK 28-25-00-869-001).
(2)
Make sure there are no leaks from the refuel valve.
5. Close-up
________ Subtask 28-25-51-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the applicable access panel:
-
FOR 7QU
install 522JB
-
FOR 8QU
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install 622JB. Subtask 28-25-51-650-051
B. 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).
Subtask 28-25-51-865-058
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 5CV, 2QU, 1QU, 7CV.
Subtask 28-25-51-942-051
D. Removal of Equipment
(1)
Remove the safety barriers.
(2)
Remove the warning notice(s).
(3)
Remove the access platform(s).
(4)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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Removal of the Refuel Valve 10QU
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
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