DRAIN MAST - REMOVAL/INSTALLATION
_________________________________ TASK 28-13-43-000-001 Removal of the Drain Mast WARNING : OBEY THE FUEL SAFETY PROCEDURES.
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1.
Reason for the Job
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Self Explanatory
2.
Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-00-00-910-001 Fuel Safety Procedures 53-35-13-000-001 Removal of the Belly Fairing Access Panels 28-13-43-991-001 Fig. 401
3. Job Set-up
__________ Subtask 28-13-43-941-050
A. Safety Precautions
(1) Obey the fuel safety procedures (Ref. TASK 28-00-00-910-001). Subtask 28-13-43-010-050
B. Get Access
(1) Remove the access panel 148FB on the right side from the belly fairing (Ref. TASK 53-35-13-000-001).
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4. Procedure
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(Ref. Fig. 401/TASK 28-13-43-991-001) Subtask 28-13-43-020-050
A. Removal of the Drain Mast
(1) Loosen the nut (8) connecting the APU vent-pipe (1) to the straight union (7).
NOTE : Make sure that the APU vent-pipe (1) attachment is loose.
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(2)
Remove the screws (4) from the drain mast (5). NOTE : The drain mast stays in position because the sealant holds it
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in its position.
(3)
Remove the drain mast (5) from the fuselage.
(4)
Remove and discard the O-ring (3) from the center tank vent-pipe (2).
(5)
Put blanking plugs on the disconnected line ends.
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Drain Mast
Figure 401/TASK 28-13-43-991-001
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TASK 28-13-43-400-001
Installation of the Drain Mast
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
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1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific nonmetallic scraper
No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 lbf.ft)
B. Consumable Materials
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Material No. 04-006 USA MIL-G-6032 TYPE I GREASE, GASOLINE AND OIL RESISTANT (Ref. 20-31-00) Material No. 09-003 C Z-16.115 SEALANT,POLYSULFIDE (USE 09-018) (Ref. 20-31-00)
Material No. 09-016 USA MIL-PRF-81733D TYPE II CLASS B
CORROSION INHIBITING FILLET CONSISTENCY
(Ref. 20-31-00)
R Material No. 11-003 USA ASTM D 740 METHYL-ETHYL-KETONE (Ref. 20-31-00) Material No. 16-003 F ASNB70720 COATING (OBSOLETE USE 16-021) (Ref. 20-31-00)
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C. Expendable Parts
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FIG.ITEM |DESIGNATION |IPC-CSN
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3 O-ring 28-13-03 04 -200 3 O-ring 28-13-03 04A-200 6 O-ring 28-22-03 01 -080 6 O-ring 28-22-03 01A-080
R 6 O-ring 28-22-03 01F-080
D. Referenced Information
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REFERENCE DESIGNATION
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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)-
28-00-00-910-001 Fuel Safety Procedures
53-35-13-000-001 Removal of the Belly Fairing Access Panels
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