C. Expendable Parts -------------------------------------------------------------------------------
FIG.ITEM --------- |DESIGNATION ---------------------------------------- |IPC-CSN------------------------------
2 O-ring 28-21-05 28A-160
D. Referenced Information
------------------REFERENCE -------------------------------DESIGNATION ------------------------------
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12-11-28-650-003 Pressure Refuel with Automatic Control 20-28-00-912-002 Electrical Bonding of Components With Conductive
Bolts and Screws in the Tanks 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 28-25-00-869-001 Fuel Transfer 57-27-11-000-001 Removal of the Access Panel (540AB, 540BB, 540CB,
540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
57-27-11-400-001 Installation of the Access Panel (540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB)
28-21-54-991-001 Fig. 401
3. Job Set-up
__________
Subtask 28-21-54-941-053
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.
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Subtask 28-21-54-865-052
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
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PANEL DESIGNATION IDENT. LOCATION
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R 121VU FUEL/L WING TK/PUMP2 SPLY 7QA N26 121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 121VU FUEL/R WING TK/PUMP2 SPLY 8QA Q26 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23 123VU L WING TK/PUMP 1/STBY SPLY 11QA AD12 123VU R WING TK/PUMP 1/STBY SPLY 12QA AE12
Subtask 28-21-54-860-052
C. Aircraft Maintenance Configuration
(1)
Make sure that the center tank and the applicable wing fuel tank are defuelled (Ref. TASK 28-25-00-650-001).
(2)
Make sure that the remaining fuel has been drained from the applicable wing 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 surge door is open:
-
FOR 6QM, 8QM
the surge door 540BZ(640BZ)
-
FOR 5QM, 7QM
the surge door 540AZ(640AZ).
(6)
Make sure that the applicable tool is on the surge door:
-
For 540BZ(640BZ) the HOOK-COVER (RIB2-SURGE DOORS) (98D57004014000)
-
For 540AZ(640AZ) the HOOK-COVER (RIB 2 SURGE DOORS) (98D57004013000).
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4. Procedure
_________
(Ref. Fig. 401/TASK 28-21-54-991-001) Subtask 28-21-54-420-050
A. Preparation for Installation
(1)
Clean the component interfaces and the adjacent areas 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 (2) with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).
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