-
the air bypass duct,
-
the air bypass plenum.
(d)
The APU accessory cooling system:
-
the cooling fan,
-
the fan outlet duct assembly,
-
the fan inlet duct assembly,
-
the oil cooler exhaust duct.
(e)
The engine controls system:
-
the electronic control box,
-
the electronic control box mounting bracket.
(f)
The APU indicating system:
-
the speed sensor,
-
the thermocouple,
-
the engine identification module.
(g)
The APU exhaust system:
-
the exhaust muffler,
-
the sealing ring.
(h)
The APU oil system:
-
the fill tube
-
the sight gauge,
-
the oil pump,
-
the oil filters,
-
the magnetic oil drain plug,
-
the de-oiling solenoid valve,
-
the oil level sensor,
-
the oil temperature sensor
-
the low oil pressure switch,
-
the oil cooler.
Subtask 49-20-00-710-061
B. Inspection/Test CAUTION : MAKE SURE THAT THE FUEL-FEED SYSTEM DOES NOT HAVE ANY LEAKS.
_______
LEAKS IN THE FUEL-FEED SYSTEM CAN CAUSE A FIRE.
CAUTION : MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT
_______ AVAILABLE. THE APU FIRE EXTINGUISHING SYSTEM IS NOT SUFFICIENT TO EXTINGUISH A FIRE IF THE ACCESS DOORS 315AL AND 316AR ARE OPEN/ REMOVED. KEEP OPERATION OF THE APU TO A MINIMUM WHEN THE ACCESS DOORS ARE OPEN/REMOVED.
(1) Do the operational test of the APU (Ref. TASK 49-00-00-710-008).
(a) Operate the APU for min. five minutes and examine the APU for fuel, oil and air leaks.
NOTE : Leaks are not permitted.
____
5. Close-up
________ Subtask 49-20-00-410-060
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the LIGHT control switch 11LJ to the off position.
(3)
Close the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
(5)
Remove the access platform(s).
(6)
Remove the warning notice(s).
Subtask 49-20-00-860-050
B. Aircraft Maintenance Configuration.
(1) De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
TASK 49-20-00-290-001
APU Power Plant Borescope Inspection (APS 3200)
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 ratchet handle, extension and socket No specific Borescope Battery No specific Borescope Light Source No specific Cable Adapter No specific Eye-Piece Adapter No specific Flexible Borescope (5mm dia.) No specific Flexible Borescope (8mm dia.). No specific Liquid Light Guide Cable No specific access platform 2.5 m (8 ft. 2 in.) TB3043G002 2 TOOL FOR ENDOSCOPIC INSPECTION
B. 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 49-11-11-000-003 Removal of the Power Plant (APU) (APS 3200) 49-41-41-000-003 Removal of the Igniter Plug(s) (APS 3200) 49-41-41-400-002 Installation of the Igniter Plug(s) (APS 3200) 49-52-53-000-001 Removal of the PMG and Cooling Fan Assembly (8055KM)
(APS 3200) 49-52-53-400-001 Installation of the PMG and Cooling Fan Assembly (8055KM) (APS 3200)
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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