Subtask 49-32-11-865-050
C. 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
Subtask 49-32-11-010-050
D. Get 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).
(3)
Make sure that the light SW 11LJ is set to the ON position.
(4)
Put the container below the Fuel Control Unit (FCU).
4. Procedure
_________
(Ref. Fig. 401/TASK 49-32-11-991-001) Subtask 49-32-11-020-050
A. Removal of the FCU (8022KM)
(1)
Remove the electrical connector (21) from the fuel-control unit solenoid.
(2)
Remove the electrical connector (22) from the fuel-control unit torque-motor.
(3)
Put blanking caps on the disconnected electrical connectors.
(4)
Remove the L.P. vent and drain valve blanking cap (18).
(5)
Install the ADAPTER - VENT AND DRAIN VALVE, APU (17) to the fuel vent and drain valve (20).
(6)
Drain the unwanted fuel into the container.
(7)
Remove the vent and drain valve adapter and tube (17).
(8)
Remove and discard the lockwire from the fuel inlet line (19).
(9)
Disconnect the fuel inlet line (19) from the APU fuel LP switch 5030QM.
(10)
Disconnect the FCU solenoid fuel line (8) from the FCU solenoid and drain into the container.
(11)
Disconnect the IGVA return fuel line (9) from the FCU (1) and drain into the container.
(12)
Disconnect the IGVA supply fuel line (5) from the FCU (1) and drain into the container.
(13)
Disconnect the drain line (14) from the FCU (8022KM) (1) and drain into the container.
(14)
Put blanking plugs on the disconnected line ends.
(15)
Remove the V-clamp (4) from the (8022KM) FCU.
(16)
Remove the FCU (8022KM) (1) from the lube pump assembly (2).
(17)
Remove and discard the packing (3).
(18)
Remove and discard the lockwire from the adapters (16), (7), (10), and the pipe connector (5).
(19)
Remove the APU fuel LP switch 5030QM from the FCU (8022KM) (1) and discard the packing (15) (Ref. TASK 28-22-14-000-001).
(20)
Remove the FCU solenoid (7) and IGVA return (10).
(21)
Remove the air check valve (12).
(22)
Discard the packing (6), (11) and (13).
(23)
Put blanking plugs on the disconnected line ends.
Fuel Control Unit
Figure 401/TASK 49-32-11-991-001
CES
TASK 49-32-11-400-001
Installation of the Fuel Control Unit (FCU) (8022KM) (GTCP 36-300)
WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
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 Torque Wrench : range 0.00 to 1.20 m.daN
(0.00
to 9.00 lbf.ft) No specific Torque Wrench : range 1.00 to 10.00 m.daN
(8.00 to 75.00 lbf.ft)
B.
Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific lockwire-corrosion resistant steel 0.6 mm (0.0236 in) dia No specific lockwire-corrosion resistant steel 0.8 mm (0.032 in) dia Material No. 01-002 USA MIL-PRF-5624 GRADE JP4 FUEL, TURBO (Ref. 20-31-00)
Material No. 03-002 GB DEF-STAN 91-101 LUBRICATING OIL TURBINE ENGINE SYNT BASE (Ref. 20-31-00)
Material No. 04-010 USA MIL-G-25013 GREASE SYNTHETIC, BALL+ROLLER BEARING (Ref. 20-31-00) Material No. 06-001A USA MIL-L-23398 SOLID FILM LUBRICANT AIR DRYING (Ref. 20-31-00)
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