TASK 49-51-18-400-001
 Installation of the Compressor Inlet-Pressure Sensor (GTCP 36-300)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 3.5 m (11 ft. 6 in.)
 B. 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 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) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-51-18-991-001 Fig. 401

 3. Job Set-up
__________ Subtask 49-51-18-860-051
 A. Aircraft Maintenance Configuration
 (1)
 Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 (2)
 On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.

 (3)
 Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.

 (4)
 Make sure that hydraulic systems are depressurized
 (Ref. TASK 29-00-00-864-001).

 Subtask 49-51-18-865-051
 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 49-51-18-010-052
 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)
 Make sure that the light SW 11LJ is set to the ON position.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 49-51-18-991-001) Subtask 49-51-18-420-050
 A. Installation of the Inlet Pressure Sensor.
 (1)
 Remove the blank plugs from the sensor (2).

 (2)
 Install the pressure sensor (2) to the APU with the bolts (4) and the washers (5).

 (3)
 Remove the blanking plug from the disconnected line (3).

 (4)
 Install the pressure line (3) to the pressure sensor (2).

 (5)
 Remove the blanking caps from the electrical connectors.

 (6)
 Make sure that the electrical connectors are clean and in the correct condition.

 (7)
 Connect the electrical connector (1) to the pressure sensor (2). Subtask 49-51-18-865-052

 B.
 Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.

 Subtask 49-51-18-710-050
 C. Test
 (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 49-00-00-860-003).

 (3)
 Examine the sensor and tube for leaks. No leaks are permitted.

 (4)
 Stop the APU (Ref. TASK 49-00-00-860-004).

 5. Close-up
________ Subtask 49-51-18-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and 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).

 (4)
 Remove the access platform(s). Subtask 49-51-18-865-053

 B.
 Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD

 Subtask 49-51-18-860-052
 C. Aircraft Maintenance Configuration
　
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