Inspection /Check of the Primary Fuel Nozzle and Manifold (8020KM) (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
49-31-41-000-001 Removal of the Primary Fuel Nozzle and Manifold (8020KM) (GTCP 36-300) 49-31-41-400-001 Installation of the Primary Fuel Nozzle and Manifold (8020KM) (GTCP 36-300)
3. Job Set-up
__________ Subtask 49-31-41-020-055
A. Remove the manifold and fuel nozzles (Ref. TASK 49-31-41-000-001)
4. Procedure
_________ Subtask 49-31-41-210-051
A. Inspection of the Fuel Nozzles and Manifold.
(1)
Make sure that the manifold insulation is not damaged.
(2)
Make sure that the nozzle fuel inlet connections (5) are not damaged, or blocked with carbon deposits.
(3)
Examine the nozzle mounting flange (5) and make sure that there is no damage.
(4)
Examine the atomizer assembly for damage or carbon deposits. None is permitted.
(5)
Blow filtered air through each nozzle connection. Make sure that there are no blockages.
NOTE : If a blockage is found replace the nozzle assembly.
____
________
5. Close-up
Subtask 49-31-41-420-054
A. Install the fuel nozzles and manifold (Ref. TASK 49-31-41-400-001).
TASK 49-31-41-400-001
Installation of the Primary Fuel Nozzle and Manifold (8020KM) (GTCP 36-300)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific Torque Wrench : range 0.00 to 1.20 m.daN
(0.00
to 9.00 lbf.ft) No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 lbf.ft)
B.
Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific lockwire-corrosion resistant steel 0.8mm (0.032in) dia Material No. 04-014 USA MIL-PRF-907 HIGH TEMPERATURECOMPOUND (Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
8 seal 49-31-04 01C-060
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-860-003 APU Start by External Power (GTCP 36-300) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-31-41-991-001-A Fig. 201
3. Job Set-up
__________
Subtask 49-31-41-860-054
A. Aircraft Maintenance Configuration
(1)
Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-31-41-865-053
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
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