R **ON A/C ALL
TASK 21-26-54-400-001
Installation of the Conditioned Air Inlet Valve (21HQ)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific platform 1.6 m (5 ft. 3 in.)
B. Expendable Parts
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FIG.ITEM |DESIGNATION |IPC-CSN
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O-ring 21-26-01 09 -020
C. Referenced Information
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REFERENCE DESIGNATION
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R 21-26-00-710-001 Operational Check of System via MCDU R 21-26-00-710-001 Operational Check of System via MCDU 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 52-41-00-410-002 Close the Avionics Compartment Doors after Access 21-26-54-991-001 Fig. 401
3. Job Set-up
__________
CAUTION : USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE
_______ THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-54-860-050
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. TASK 24-42-00-861-001).
Subtask 21-26-54-010-051
B. Get Access
(1) Make sure that the platform is in position at the access door 824.
(2) Make sure that the access door 824 is open. Subtask 21-26-54-865-051
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 49VU AIR COND/AVNCS VENT/CTL 5HQ D05 122VU AIR COND/AVNCS/VENT/MONG 3HQ Y17
1EFF : ALL 1 21-26-54Page 406 1 1 May 01/05R 1 1 1CES 1
4. Procedure
_________ (Ref. Fig. 401/TASK 21-26-54-991-001) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-54-420-050
A. Installation of the Conditioned Air Inelt Valve
(1)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(2)
Clean the component interface and/or the adjacent area.
(3)
Remove the blanking plugs from the disconnected line ends.
(4)
Install the flexible sleeve (3) on the pipe (1).
(5)
Install the new O-ring (7) in the pipe (9) groove.
(6)
Install the valve (6) in the flexible sleeve (3). NOTE : The arrow which shows the airflow direction must be point up.
____
(7)
Make sure that the valve (6) is in the correct angular position. The electrical cable must not be too tight or too loose.
(8)
Install the clamp (8) and torque to the value given on the clamp.
(9)
Put the flexible sleeve (3) in position.
(10)
Install the clamps (2) and (4) and tighten them. NOTE : Use the clamps (2) and (4) kept during the removal procedure.
____
(11)
Remove the blanking caps from the electrical connectors.
(12)
Make sure that the electrical connectors are clean and in the correct condition.
(13)
Connect the electrical connector (5).
R **ON A/C 051-052,
R Subtask 21-26-54-420-050-A
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