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CES 3. Job Set-up
__________ Subtask 49-41-38-860-056
A. Aircraft Maintenance Configuration
(1)
Energize the ground service network
(Ref. TASK 24-42-00-861-001).
(2)
Make sure that the access platform is in position below the APU compartment.
(3)
Make sure that the APU access doors 315AL and 316AR are open (Ref. TASK 52-41-00-010-001).
(4)
Make sure that there is a notice in the cockpit to tell persons not to switch the APU MASTER SW p/bsw to ON.
(5)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-41-38-865-062
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
4. Procedure
_________
(Ref. Fig. 401/TASK 49-41-38-991-004) Subtask 49-41-38-420-054
A. Installation of the Ignition Unit
(1)
Put the ignition unit (3) in position on the APU and install the bolts (5) and the washers (4).
(2)
TORQUE the bolts (5) to 0.57 m.daN (50.44 lbf.in).
(3)
Remove the blanking caps from the electrical connectors.
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CES
(4)
Connect the ignition lead and the low tension electrical lead (1).
(5)
TORQUE the ignition lead (2) to 0.79 m.daN (69.91 lbf.in).
(6)
Make sure that the work area is clean and clear of tool(s) and other items.
Subtask 49-41-38-865-063
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD
Subtask 49-41-38-710-052
C. Do the self-test of the ECB (Ref. TASK 49-00-00-710-009).
5. Close-up
________ Subtask 49-41-38-410-053
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the light SW 11LJ to the OFF position.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the access platform(s). Subtask 49-41-38-860-057
B.
Aircraft Maintenance Configuration
(1)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(2)
De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
(3)
Remove the warning notice(s).
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CES
IGNITION UNIT - REMOVAL/INSTALLATION
____________________________________ TASK 49-41-38-000-002 Removal of the Ignition Unit (8030KM) (APS 3200) 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 blanking caps
No specific circuit breaker(s) safety clip(s)
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 49-41-38-991-003 Fig. 401
3. Job Set-up
__________ Subtask 49-41-38-941-052
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.
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