R  (7) Bend the end of the ring (12) and remove it. 
R  Subtask 21-26-43-615-068 
R  B. Clean the filter cartridge (Ref. CMM 212600). 
R  Subtask 21-26-43-160-073 
R  C. Clean the component interface and/or the adjacent area (Ref. CMM 212600). 
R  Subtask 21-26-43-210-081 
R  D. Do an inspection of the component interface and/or the adjacent area. 
R  Subtask 21-26-43-420-082 
R  E. Installation of the Filter Cartridge 
R  (1) Move apart the two ends of the ring (12) to install it into the 
R  groove of the filter (13). 
R  (2) Hold the two ends of the ring with the bowden cable. 
R  (3) Put the assembly through the door into the body (10) and engage the 
R  bearing of the filter (13) into the housing. 
R  (4) Release the ring (12), close the door and lock the four 
R  elastic-fastener devices. 
R  5. Close-up________ 
R  Subtask 21-26-43-410-089 
R  A. Close Access 
R  (1) Make sure that the work area is clean and clear of tool(s) and other 
R  items. 
R  (2) Close the access door 824 (Ref. TASK 52-41-00-410-002). 
R  (3) Remove the access platform(s). 
R  Subtask 21-26-43-865-120 
R  B. Remove the safety clip(s) and the tag(s) and close this(these) circuit 
R  breaker(s): 
R  1HQ, 2HQ, 3HQ, 5HQ, 6HQ

R Subtask 21-26-43-861-117
R C. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
R Subtask 21-26-43-862-112
R D. De-energize the ground service network (Ref. TASK 24-42-00-862-001).

 FILTER ASSY - AVIONICS VENTILATION (2081HM,2082HM,2083HM)
_________________________________________________________ REMOVAL/INSTALLATION
____________________
 TASK 21-26-43-000-002
 Removal of the Filter Assembly (2081HM,2082HM,2083HM)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific access platform 1.6 m (5 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-26-43-600-001 Servicing of the Demister Filter 21-26-43-600-002 Servicing of the Filter 21-26-43-600-010 Servicing of the Demister Filter (2081HM) 21-26-43-600-011 Servicing of the Filter Cartridge (2082HM) 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 24-42-00-861-001 Energize the Ground Service Network from the External Power 21-26-43-991-006 Fig. 401
 3. Job Set-up
__________
 Subtask 21-26-43-862-060
 A. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
R 1EFF : 001-049, 051-099, 101-105, 1 21-26-43Page 401 1 1 Config-1 May 01/05 1 1 1CES 1 Subtask 21-26-43-861-060

 B. Energize the ground service network (Ref. TASK 24-42-00-861-001).
 Subtask 21-26-43-865-061

 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------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 21-26-43-010-055
 D. Get Access
 (1)
 Put the access platform in position below the avionics-compartment aft door 824.

 (2)
 Open the access door 824.

 4. Procedure
_________ (Ref. Fig. 401/TASK 21-26-43-991-006) R **ON A/C 001-001, 051-052,
 Subtask 21-26-43-020-065
 A. Remove the demister filter.
 (1)
 Remove the demister filter (Ref. TASK 21-26-43-600-001).

 (2)
 Remove the filter (Ref. TASK 21-26-43-600-002). NOTE : Close the door and lock the four elastic-fastener devices for

____
 the removal of the body.

R 1EFF : 001-049, 051-099, 101-105, 1 21-26-43Page 402 1 1 Config-1 May 01/05 1 1 1CES 1
　
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