(2)
Make sure that the ground service network is energized (Ref. TASK 24-42-00-861-001).
Subtask 21-26-43-865-062
B. 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 123VU AVNCS VENT/BLOWER/FAN 1HQ AD10 123VU AVNCS VENT/EXTC/FAN 2HQ AE02
Subtask 21-26-43-010-077
C. Get Access
(1)
Make sure that the access platform is in position below the avionics-compartment aft door 824.
(2)
Make sure that the access door is open 824.
Subtask 21-26-43-160-055
D. Clean the component interface and/or the adjacent area.
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E. Do an inspection of the component interface and/or the adjacent area.
4. Procedure
_________
(Ref. Fig. 401/TASK 21-26-43-991-006) **ON A/C 001-001,
Subtask 21-26-43-420-055
A. Install the filter assembly.
(1)
Remove the blanking plugs from the disconnected line ends.
(2)
Install the filter body (4) with a new seal (11) on the blowing duct (6).
(3)
Install the screws (2) and the nuts (5). Do not fully tighten at this time.
(4)
Install the screws (10) and the nuts (7) with the equipped flange
(12) and tighten.
(5)
Tighten the screws (2).
(6)
Install the drain hose (8).
(7)
Install the clamp (9) and tighten.
(8)
Install the flexible sleeve (14).
(9)
Install and tighten the clamps (1). NOTE : Use the clamps (1) kept during the removal procedure.
____
(10)
Make sure that the attachments (3) are correctly tightened.
(11)
Release each of the four fasteners, open the door and install the filter (Ref. TASK 21-26-43-600-002).
(12)
Install the demister filter (Ref. TASK 21-26-43-600-001).
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Subtask 21-26-43-420-055-A
A. Install the filter assembly.
(1)
Remove the blanking plugs from the disconnected line ends.
(2)
Install the filter body (4) with a new seal (11) on the blowing duct (6).
(3)
Install the screws (2) and the nuts (5). Do not fully tighten at this time.
(4)
Install the screws (10) and the nuts (7) with the equipped flange
(12) and tighten.
(5)
Tighten the screws (2).
(6)
Install the drain hose (8).
(7)
Install the clamp (9) and tighten.
(8)
Install the flexible sleeve (14).
(9)
Install and tighten the clamps (1).
(10)
Make sure that the attachments (3) are correctly tightened.
(11)
Release each of the four fasteners, open the door and install the filter cartridge (Ref. TASK 21-26-43-600-011).
(12)
Install the demister filter (Ref. TASK 21-26-43-600-010).
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5. Close-up
________
Subtask 21-26-43-410-055
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 824 (Ref. TASK 52-41-00-410-002).
(3) Remove the access platform(s).
Subtask 21-26-43-865-063
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HQ, 2HQ, 3HQ, 5HQ, 6HQ
Subtask 21-26-43-861-061
C. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-26-43-862-061
D. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
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R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499, Post SB 21-1087 For A/C 001-049,101-105, FILTER ASSY - AVIONICS VENTILATION - REMOVAL/INSTALLATION
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