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 21-26-42-861-055
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-42-941-054
B. Safety Precautions
(1)
On the AIR COND panel 30VU:
(a)
Make sure that the APU BLEED, all ENG BLEED and the PACK 1(2) pushbutton switches are released.
(b)
Put a warning notice in position to tell persons not to operate these pushbutton switches.
(2)
On the HP and LP ground connectors, put a warning notice in position to tell persons not to supply the ground air sources.
Subtask 21-26-42-865-055
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
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
123VU AVNCS VENT/EXTC/FAN 2HQ AE02
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------**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 21-26-42-010-055
D. Get Access
(1) Put the access platform in position at the access door 824.
(2) Open the access door 824. R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-42-010-056
E. Removal of the Elbow
(1)
Remove the clamps (2) from the flexible sleeve (3). NOTE : Do not discard the clamps (2). You must keep and use them
____
during the installation procedure.
(2)
Remove the clamps (5) from the flexible sleeve (4). NOTE : Do not discard the clamps (5). You must keep and use them
____
during the installation procedure.
(3)
Remove the clamps (1).
(4)
Remove the elbow (8) from the flexible sleeves (3) and (4).
R **ON A/C 051-052,
R Subtask 21-26-42-010-056-A
R E. Removal of the Elbow
R R R R R (1) Remove the clamps (2) from the flexible sleeve (3). (2) Remove the clamps (5) from the flexible sleeve (4). (3) Remove the clamps (1). (4) Remove the elbow (8) from the flexible sleeves (3) and (4). **ON A/C ALL
R 4. Procedure_________ **ON A/C 001-049, 051-099, 101-105, 151-199, 201-214,
(Ref. Fig. 604/TASK 21-26-42-991-005) **ON A/C ALL
Subtask 21-26-42-210-059
A. Verification of the Drain Holes/Hose (1) Remove the clamp (7). (2) Examine the drain hole/hose (6) area. Make sure that it is not clogged. (3) Install the clamp (7) and tighten it.
R 1EFF : ALL 1 21-26-42Page 629 1 1 May 01/05 1 1 1CES 1
Drain Hole/Hose and Syphon and Filter Assembly
Figure 604/TASK 21-26-42-991-005
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 21-26-42Page 630 1201-214, 1May 01/05 1 1 1CES 1
5. Close-up
________ R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-42-410-055
A. Installation of the Elbow
(1)
Put the elbow (8) in position.
(2)
Install the clamps (1).
(3)
Install the clamps (2) and (5) on the flexible sleeves (3) and (4). Tighthen the clamps (1), (2) and (5).
NOTE : Use the clamps (2) and (5) kept during the removal procedure.
____
**ON A/C 051-052,
Subtask 21-26-42-410-055-A
A. Installation of the Elbow
(1)
Put the elbow (8) in position.
(2)
Install the clamps (1).
(3)
Install the clamps (2) and (5) on the flexible sleeves (3) and (4). Tighthen the clamps (1), (2) and (5).
**ON A/C ALL
Subtask 21-26-42-410-054
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
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