_______ 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 21-26-41-861-050
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-41-865-050
B. 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
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
123VU AVNCS VENT/EXTC/FAN 2HQ AE02 **ON A/C ALL
123VU AVNCS VENT/BLOWER/FAN 1HQ AD10 **ON A/C 301-399,
123VU AVNCS VENT/EXTC/FAN 2HQ AC04 **ON A/C ALL
Subtask 21-26-41-010-050
C. Get Access
(1)
Put the access platform in position at the access door 824.
(2)
Open the access door 824.
4. Procedure
_________
(Ref. Fig. 401/TASK 21-26-41-991-001) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-41-020-052
A. Removal of the Check Valve
(1)
Remove the clamp (11).
(2)
Remove the clamps (8). NOTE : Do not discard the clamps (8). You must keep and use them
____ during the installation procedure.
(3)
Remove the clamp (14) and disconnect the drain hose (15) from the duct (10).
(4)
Hold the duct (10) and remove the clamp (9).
(5)
Remove the duct (10) and discard the O-ring (12).
(6)
Remove the flexible sleeve (7).
(7)
Remove the clamps (2). NOTE : Do not discard the clamps (2). You must keep and use them
____ during the installation procedure.
(8) Remove the screws (6) and the washers (5).
**ON A/C 051-052,
Subtask 21-26-41-020-052-A
A. Removal of the Check Valve
(1)
Remove the clamp (11).
(2)
Remove the clamps (8).
(3)
Remove the clamp (14) and disconnect the drain hose (15) from the duct (10).
Check Valve Figure 401/TASK 21-26-41-991-001
1EFF : 1 1R 1CES ALL 1 11 1 21-26-41 Page 404 May 01/04
R (4) Hold the duct (10) and remove the clamp (9).
R (5) Remove the duct (10) and discard the O-ring (12).
R (6) Remove the flexible sleeve (7).
R (7) Remove the clamps (2).
R (8) Remove the screws (6) and the washers (5).
R 1EFF : 051-052, 1 21-26-41Page 405 1 1 May 01/05 1 1 1CES 1R **ON A/C ALL
TASK 21-26-41-400-001
Installation of the Check Valve (2140HM)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific platform 1.6 m (5 ft. 3 in.)
B. Expendable Parts
-------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
-------------------------------------------------------------------------------
12 O-ring 21-26-01 08A-030 12 O-ring 21-26-01 08B-030
C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
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
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