D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 24-42-00-861-001 Energize the Ground Service Network 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 49-00-00-710-004 Operational Test of the APU (4005KM) (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 49-51-13-860-051
A. Aircraft Maintenance Configuration
(1)
Make sure that the warning notice is in position on panel 25VU to tell persons not to start the APU.
(2)
Energize the ground service network
(Ref. TASK 24-42-00-861-001).
(3)
On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-51-13-865-051
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 49-51-13-010-051
C. Get Access
(1)
Make sure that the access platform is in position below the APU compartment.
(2)
Make sure that the APU access doors 315AL and 316AR are open (Ref. TASK 52-41-00-010-001).
(3)
Make sure that the light SW 11LJ is set to the ON position.
4. Procedure
_________ Subtask 49-51-13-420-050
A. Installation of the Pneumatic Sensor Assy (14)
(1)
Install the pneumatic sensor assy (14) on the bleed duct.
(a)
Install the bracket assy (9) with the bolt (10).
(b)
Install a new gasket (16) between the bleed duct and pneumatic sensor assy (14).
(c)
Install the pneumatic sensor assy (14) with the bolts (6). NOTE : Make sure the gasket (16) between the bleed duct and
____ pneumatic sensor assy (14) stays in the correct position.
(d)
Torque the bolts (6) to to 0.6 m.daN (53.09 lbf.in).
(e)
Install the bolt (4).
(2)
Connect the tube (13) to the static sensor assy (11).
(a)
Remove the blanking plugs from the hose end.
(b)
Install a new o-ring (12) to the hose (13).
(c)
Install the tube (13) to the static sensor assy (11) with the retainer (1), the washer (2) and the bolt (3).
(d)
Safety the bolt (3) with corrosion-resistant steel lockwire 0.8 mm (0.32 in) dia..
(3)
Connect the electrical connectors (15) and (17).
(a)
Remove the blanking caps from the electrical connectors (15) and (17).
(b)
Connect the electrical connectors (15) and (17) to the total pressure transducer and to the differential pressure transducer.
Subtask 49-51-13-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
Subtask 49-51-13-710-050
C. Do a operational test of the APU
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Start and Operate the APU (Ref. TASK 49-00-00-710-004)
5. Close-up
________ Subtask 49-51-13-410-050
A. Close Access
(1)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2)
Set the LIGHT control SW 11LJ to the OFF position.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001) .
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