D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-710-001 Self-Test of the ECB (59KD) (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
3. Job Set-up
__________
Subtask 49-72-15-860-058
A. Aircraft Maintenance Configuration
(1)
On the panel 25VU make sure that the APU MASTER SW pushbutton switch is off.
(2)
Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(3)
Make sure that ground fire extinguishing equipment is available.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
(5)
Make sure that the access platform is in position below the APU compartment.
(6)
Make sure that the APU access doors are open (Ref. TASK 52-41-00-010-001).
Subtask 49-72-15-865-056
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
_________ Subtask 49-72-15-420-050
A. Installation of the Thermocouple Probe (8057KM1) or (8057KM2)
(1)
Do this procedure for both the thermocouple probes.
(2)
Put the new Gasket (7) in position on the thermocouple probe (8057KM1) or (8057KM2) (6).
(3)
Install the thermocouple probe (8057KM1) or (8057KM2) (6) in the turbine casing.
(4)
Apply a thin layer of COMMON GREASE (Material No. 04-014) to the threads of the bolt (4).
(5)
Install the bolts (5).
(6)
TORQUE the bolts (5) to 50 lbf.in (0.56 m.daN).
(7)
Attach the electrical connectors (4) with the washers (3) and the nuts (1) and (2).
(8)
Make sure that the electrical connectors are clean and in the correct condition.
(9)
Secure the cable clips (3) with the bolts (1) and nuts (2).
(10)
TORQUE the nuts (2) to 20 lbf.in (0.22 m.daN).
(11)
TORQUE the nut (1) to 30 lbf.in (0.33 m.daN). Subtask 49-72-15-865-051
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
Subtask 49-72-15-710-052
C. Do the self test of the ECB (Ref. TASK 49-00-00-710-001).
5. Close-up
________ Subtask 49-72-15-410-052
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s).
THERMOCOUPLE ((131-9(A))) - MAINTENANCE PRACTICES
_________________________________________________ TASK 49-72-15-000-002 Removal of the Thermocouples (8057KM) (131-9(A)) 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 plugs
No specific circuit breaker(s) safety clip(s)
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