B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action
52-41-00-010-001 Open the APU Doors for Access
49-41-38-991-001 Fig. 401
3. Job Set-up
__________ Subtask 49-41-38-941-050
A. Safety Precautions WARNING : DISCONNECT THE LOW TENSION ELECTRICAL SUPPLY 5 MINUTES BEFORE
_______ YOU START WORK ON THE IGNITION SYSTEM. ALSO, GROUND THE IGNITER LEAD WITH AN INSULATED DEVICE AS YOU DISCONNECT IT FROM THE IGNITER PLUG. HIGH CURRENT AND VOLTAGE, WHICH ARE USED IN THE IGNITION SYSTEM, CAN KILL YOU.
(1)
Before you disconnect the two igniter cables, disconnect the low tension connector P10 and wait for 5 minutes.
(2)
Ground the the igniter leads with an insulated device before you disconnect them from the igniter unit.
Subtask 49-41-38-860-053
B. Aircraft Maintenance Configuration
(1)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off, then wait 7.5 minutes before you do the procedure.
(2)
Put a warning notice in the cockpit to tell persons not to push the APU MASTER SW pushbutton switch to on.
(3)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001)
Subtask 49-41-38-865-050
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 49-41-38-010-050
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 and 316AR (Ref. TASK 52-41-00-010-001).
(3)
Make sure that the light SW 11LJ is set to the ON position.
4. Procedure
_________
(Ref. Fig. 401/TASK 49-41-38-991-001) Subtask 49-41-38-020-050
A. Removal of the Ignition Unit (8030KM)
(1)
Remove and discard the lockwire from the ignition unit (8030KM) (4).
(2)
Disconnect the electrical connector (6) from the ignition unit (8030KM) (4).
(3)
Disconnect the ignition electrical lead (7) from the ignition unit (8030KM) (4).
(4)
Put the blanking caps on the disconnected electrical connectors.
(5)
Remove the four bolts (3) and the washers (2) from the forward bolts.
(6)
Remove the ignition unit (8030KM) (4) and the insulator (5) from the secondary shield bracket (1) on the turbine casing.
Ignition Unit
Figure 401/TASK 49-41-38-991-001
CES TASK 49-41-38-400-001
Installation of the Ignition Unit (8030KM) (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. 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)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific lockwire-corrosion resistant steel 0,6mm (0.0236 in) dia No specific lockwire-corrosion resistant steel 0,8mm (0.032 in) dia
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through the Ground Connector
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