-L static probe 3 and R static probe 3
-Pitot probe 3
-Water drain
-Pipe of the cabin-pressure detection pressure-switch.
(4)
Put an ADAPTER COVER-STATIC PORT on the L static probe 3 then on the R static probe 3.
(5)
Make sure that the flow of gas is correct at :
-
the pipe of the pressure switch
-
the water drain.
(6) Stop the flow of gas. Subtask 34-22-25-860-059
B. Put the aircraft back to its initial configuration.
(1)
Disconnect the dry nitrogen source.
(2)
Remove the adapters.
(3)
Install the water drain plug (2) on the water drain (1).
(4)
Remove the blanking cap from the pressure switch 14WN (3).
(5)
Connect the static line to the pressure switch 14WN (3).
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(6) Connect the quick-disconnect coupling (8) to the ADM 19FP3 and the quick-disconnect coupling (4) to the ADM 19FP8.
NOTE : After the connection:
____
-make sure that a colored ring is shown on the quick-disconnect couplings (4) and (8)
-pull the connectors to be sure that they are correctly attached.
(7) Install the ISIS indicator (Ref. TASK 34-22-25-400-001) on the center instrument panel.
(8) Release the hoses. Subtask 34-22-25-790-051
C. Leak test
(1)
Make sure that all the hoses are connected correctly.
(2)
Do a leak test of the standby air data system
(Ref. TASK 34-22-25-790-001).
5. Close-up
________ Subtask 34-22-25-410-051
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3)
Close the access door 811.
(4) Remove the access platform(s). Subtask 34-22-25-862-050
B. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
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______________________________________________________________ REMOVAL/INSTALLATION
____________________ TASK 34-22-25-000-001 Removal of the ISIS Indicator (22FN)
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 caps No specific blanking plugs No specific circuit breaker(s) safety clip(s)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-22-25-991-001 Fig. 401
3. Job Set-up
__________ Subtask 34-22-25-865-058
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU STBY/INST 5FN F12 105VU NAV/STBY/INST/BAT 23FN J01 122VU LIGHTING/INSTL LT/MAIN INST/PNL AND/PED 4LF Y04
Subtask 34-22-25-010-050
B. Remove the thermoformed cover from the center instrument panel.
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4. Procedure
_________
(Ref. Fig. 401/TASK 34-22-25-991-001) Subtask 34-22-25-020-051
A. Removal of the ISIS Indicator (22FN) CAUTION : WHEN YOU REMOVE THE ISIS INDICATOR, DO NOT USE THE BARO BUTTON
_______ TO PULL THE INDICATOR OUT OF ITS HOUSING. IF YOU USE THE BARO BUTTON, YOU CAN CAUSE DAMAGE TO THE INDICATOR.
(1)
Loosen the screws (3). Do not remove them.
(2)
Disengage the ISIS indicator (1) from its housing.
(3)
Disconnect the electrical connector (5).
(4)
Disconnect the red and green quick-disconnect couplings (4) from the connectors (2).
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