Material No. 19-010 USA AMS 5687
LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA
(Ref. 20-31-00)
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-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
4 packing 28-22-51 02 -030 6 O-ring 28-22-51 01 -050 7 packing 28-22-51 02 -010
R 7 packing 28-22-51 02 -010A 8 packing 28-22-51 02 -020
R 8 packing 28-22-51 02 -020A 10 O-ring 28-22-51 01 -020 11 O-ring 28-22-51 01 -010
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-00-00-910-001 Fuel Safety Procedures
28-22-00-790-002 Leak Test of the APU Fuel Line
32-12-00-010-001 Open the Main Gear Doors for Access
32-12-00-410-001 Close the Main Gear Doors after Access
28-22-51-991-001 Fig. 401
28-22-51-991-002 Fig. 402
28-22-51-991-003 Fig. 403
28-22-51-991-004 Fig. 404
3. Job Set-up
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Subtask 28-22-51-860-050
A. Aircraft Maintenance Configuration
(1)
When you do maintenance work on the fuel system you must obey the fuel safety procedures (Ref. TASK 28-00-00-910-001).
(2)
On the APU section of the overhead panel 25VU, make sure that the APU MASTER SW is in the off position (the ON legend is off).
(3)
On the FUEL overhead panel 40VU, make sure that all L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
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R (4) Make sure that the WARNING NOTICE are is in position: - on the overhead panel 25VU, to tell persons not to operate the APU MASTER SW, - on the FUEL panel 40VU, to tell persons not to operate the fuel system, - on the APU FIRE panel 20VU, to tell persons not to operate the fire extinguishing system.
(5)
Make sure that the LH MLG door is open (Ref. TASK 32-12-00-010-001)
(6)
Make sure that the access platform is in position at the MLG door.
Subtask 28-22-51-865-054
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU APU/FUEL/PUMP/CTL 3QC M38
4. Procedure
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(Ref. Fig. 401/TASK 28-22-51-991-001, 402/TASK 28-22-51-991-002, 403/TASK 28-22-51-991-003, 404/TASK 28-22-51-991-004)
Subtask 28-22-51-420-051
A. Installation of the APU Fuel Pump (4QC)
NOTE : This installation procedure is applicable for the APU fuel pump
____
with P/N C12CB0010
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Install the new O-ring (10) and the new O-ring (11) with a thin layer of FUELS (Material No. 01-001) to the APU fuel pump (1).
(4)
Put the APU fuel pump (1) in position.
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(5)
Carefully push the APU fuel pump (1) into the canister (12) with the release slot in line with the security blockscrew (5).
(6)
Turn the APU fuel pump (1) clockwise until the pump is in the correct position.
(7)
Attach the APU fuel pump (1) with the screws (3) to the canister (12).
