-ON YOUR SKIN FOR A LONG TIME.
AIRCRAFT FUEL IS POISONOUS.
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking cap
No specific circuit breaker(s) safety clip(s)
No specific lint free cloth
No specific container 1.0 l (0.2641 USgal)
No specific access platform 2.5 m (8 ft. 2 in.)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 01-002 USA MIL-PRF-5624 GRADE JP4 FUEL, TURBO (Ref. 20-31-00) Material No. 01-003 USA MIL-T-5624 GRADE JP5 FUEL, TURBO (Ref. 20-31-00)
C. Expendable Parts -------------------------------------------------------------------------------
FIG.ITEM --------- |DESIGNATION ---------------------------------------- |IPC-CSN------------------------------
3 packing 49-32-11 50 -020
4 packing 49-32-11 50 -040
4 packing 49-32-11 50 -040A
4 packing 49-32-11 50 -040B
5 filter element 49-32-11 50 -030
5 filter element 49-32-11 50 -030A
D. Referenced Information
------------------REFERENCE -------------------------------DESIGNATION ------------------------------
-------------------------------------------------------------------------------
24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 28-00-00-910-001 Fuel Safety Procedures 28-22-00-710-001 Operational Test of the APU Fuel-Pump System on
Ground to Purge the Fuel Line 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-860-005 APU Start by External Power (APS 3200) 49-00-00-860-006 APU Shutdown by External Power (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-32-11-991-004 Fig. 301
3. Job Set-up
__________
Subtask 49-32-11-941-056
A. Safety Precautions.
(1)
Obey the Fuel Safety Procedures (Ref. TASK 28-00-00-910-001).
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Put a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that ground fire extinguishing equipment is available.
(5)
Make sure that the hydraulic systems are depressurized (Ref. TASK 29-00-00-864-001).
Subtask 49-32-11-865-063
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 49VU AIR BLEED/X FEED/VALVE/BAT 2HV D13 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU APU/FUEL/LP VALVE/CTL 1QF M40 121VU APU/FUEL/LP VALVE/SPLY 2QF M39 121VU APU/FUEL/PUMP/CTL 3QC M38
Subtask 49-32-11-010-056
C. Gain Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-010-001).
4. Procedure
_________ (Ref. Fig. 301/TASK 49-32-11-991-004) Subtask 49-32-11-020-053
A. Filter Housing/Element - Removal
(1)
Put the container in position below the fuel filter housing (6).
(2)
Grasp the filter housing (6), turn it anti-clockwise and remove it.
(3)
Let the fuel from the fuel filter housing (6) drain into the container.
(4)
Remove the filter element (5) from the fuel filter housing (6). Discard the element (5) and the packing (4).
(5)
Tip the residual fuel from the housing into the container.
(6)
Remove and discard packing (3).
(7)
Put a blanking cap on the FCU fuel filter orifice. Subtask 49-32-11-420-053
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