Subtask 49-51-13-865-053
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 49-51-13-860-052
C. Aircraft Maintenance Configuration
(1)
De-energize the ground service network (Ref. TASK 24-41-00-862-002)
(2)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(3)
Remove the warning notice(s).
SENSOR - TOTAL PRESSURE - REMOVAL/INSTALLATION
______________________________________________ R **ON A/C 001-003, 051-099, 401-499,
TASK 49-51-14-000-001 Removal of the Airflow Sensor (GTCP 36-300) 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)
No specific access platform 3.5 m (11 ft. 6 in.)
B. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
6 packing 49-51-13 01 -060 11 packing 49-51-13 01 -100 22 gasket 49-51-13 01 -120 24 packing 49-51-13 01 -060 27 packing 49-51-13 01 -060
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 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 49-51-14-991-001 Fig. 401
3. Job Set-up
__________
Subtask 49-51-14-860-050
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Put 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 49-51-14-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
Subtask 49-51-14-010-050
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, 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT control switch 11LJ to the on position.
4. Procedure
_________
(Ref. Fig. 401/TASK 49-51-14-991-001) Subtask 49-51-14-020-050
A. Removal of the Airflow Sensor.
(1)
Remove and discard the safety wire from the bolts (1), (3), (7), (8),
(12) and (16).
(2)
Remove the bolt (1) from the airflow sensor (2).
(3)
Remove the bolt (3) from the differential pressure sensor (4).
(4)
Remove the tube (5) from the airflow sensor (2) and the differential pressure sensor (4).
(5)
Remove and discard the packing (6) (6) from the tube (5).
(6)
Remove the bolt (7) from the airflow sensor (2).
(7)
Remove the bolt (8) from the total pressure transducer (9).
(8)
Remove the tube (10) from the airflow sensor (2) and the total pressure transducer (9).
(9)
Remove and discard the packing (11) from the tube (10).
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