D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 49-00-00-860-003 APU Start by External Power (GTCP 36-300) 49-00-00-860-004 APU Shutdown by External Power (GTCP 36-300) 49-90-00-600-001 Check Oil Level and Replenish (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 49-94-13-991-001 Fig. 401
3. Job Set-up
__________
Subtask 49-94-13-860-051
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).
(7)
Make sure that the container is in position below the
temperature/pressure assembly (6).
Subtask 49-94-13-865-051
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
Subtask 49-94-13-010-052
C. 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)
Set the LIGHT SW 11LJ to the ON position.
4. Procedure
_________ (Ref. Fig. 401/TASK 49-94-13-991-001) Subtask 49-94-13-420-050
A. Installation of the High Oil-Temperature Switch (8090KM)
(1)
Apply a thin layer of lubricant OILS (Material No. 03-002) to the new o-ring (5).
(2)
Install the new o-ring (5) on the high oil-temperature switch (8090KM) (4).
(3)
Remove the blanking plug from the temperature/pressure assembly (6).
(4)
Install the high oil-temperature switch (8090KM) (4) to the temperature/pressure assembly (6).
(5)
Install the washer (3) and the bolt (2).
(6)
Remove the container.
(7)
TORQUE the bolt (2) to 0.56 m.daN (49.55 lbf.in).
(8)
Remove the blanking caps from the electrical connections.
(9)
Connect the electrical connection (1) to the high oil-temperature switch (8090KM) (4).
Subtask 49-94-13-210-051
B. Do a visual check of the oil quantity. Add oil if the oil level is on or below the ADD mark on the sight glass. (Ref. TASK 49-90-00-600-001)
Subtask 49-94-13-865-053
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD
Subtask 49-94-13-710-050
D. Start and Operate the APU to check the System Report/Test on the MCDU
(1)
Start and operate the APU (Ref. TASK 49-00-00-860-003).
(2)
Allow the APU to run for 5 minutes to check the System Report/Test on the MCDU.
NOTE : The SYSTEM SELF-TEST page must not show high oil-temperature
____
switch.
(3)
Shutdown the APU (Ref. TASK 49-00-00-860-004).
(4)
Do a leak check of the high oil-temperature switch.
NOTE : No leaks are permitted.
____
5. Close-up
________ Subtask 49-94-13-410-050
A. Close Access
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