(2)
Make sure that the safety barriers are in position.
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B. Aircraft Maintenance Configuration
(1)
Make sure that the applicable fuel tank is defueled (Ref. TASK 28-25-00-650-001) .
(2)
Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. TASK 28-25-00-650-003).
(3)
Make sure that the access platform is below the applicable access panel 540AB (640AB).
(4)
Make sure that the applicable access panel 540AB (640AB) is removed (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-000-001).
(5)
Make sure that the applicable spring-loaded cover 540BZ (640BZ) is held open by the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000).
4. Procedure
_________
(Ref. Fig. 401/TASK 28-25-44-991-001)
Subtask 28-25-44-420-051
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 interfaces and the adjacent areas with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-004).
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
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(4) Lubricate the new O-ring with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012):
FOR 31QM
lubricate O-ring (2)
FOR 32QM
lubricate O-ring (2).
Subtask 28-25-44-420-050
B. Installation of the Fuel Drain Valve
(1)
Remove the blanking plugs and install the O-ring (2) on the fuel drain valve (1).
(2)
Install the fuel drain valve (1).
5. Close-up
________
Subtask 28-25-44-410-052
A. Close Access
(1)
Make sure that the area is clean and clear of all tools and miscellaneous items of equipment.
(2)
Remove the HOOK-COVER (RIB2-SURGE DOORS) and close the applicable rear spring-loaded cover in Rib 2:
-
FOR 31QM
close 540BZ
-
FOR 32QM
close 640BZ.
(3)
Install the applicable access panel (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-27-11-400-001):
-
FOR 31QM
install 540AB
-
FOR 32QM
install 640AB.
Subtask 28-25-44-650-051
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).
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C. Removal of Equipment
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