C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
R 1 gasket 21-26-01 18 -160 1 gasket 21-26-01 18A-160 6 O-ring 21-26-01 17 -020
R 11 gasket 21-26-01 18 -127 11 gasket 21-26-01 18A-127 D. 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 21-26-42-991-002 Fig. 601
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 21-26-42-861-052
A. Energize the ground service network
(Ref. TASK 24-42-00-861-001).
Subtask 21-26-42-865-051
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06
Subtask 21-26-42-010-052
C. Get Access
(1)
Put the access platform in position at the access door 822.
(2)
Open the access door 822.
4. Procedure
_________
(Ref. Fig. 601/TASK 21-26-42-991-002) R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 21-26-42-020-052
A. Remove the Inlet Duct
(1)
Carefully move the insulating blankets away from the work area.
(2)
Remove the clamps (8). Slide the flexible sleeve (13) on the duct (12).
NOTE : Do not discard the clamps (8). You must keep and use them
____ during the installation procedure.
(3)
Remove the clamp (5).
(4)
Remove the clamp (7) which holds the duct (2). NOTE : Attach the isolation valve of the heat exchanger to the
____ adjacent structure to prevent damage to the valve.
(5)
Remove the attachment screws (9), (4) and the washers (10), (3).
(6)
Carefully remove the ducts (2) and (12).
(7)
Remove and discard the O-ring (6).
(8)
Remove the flexible sleeve (13) from the duct (12).
(9) Put blanking plugs on the disconnected line ends.
**ON A/C 051-052,
Subtask 21-26-42-020-052-A
A. Remove the Inlet Duct
(1)
Carefully move the insulating blankets away from the work area.
(2)
Remove the clamps (8). Slide the flexible sleeve (13) on the duct (12).
(8)
Install the gaskets
WARNING : DO NOT GET THE COMPOUND ON YOUR SKIN.
Inlet Duct
Figure 601/TASK 21-26-42-991-002
1EFF : ALL 1 21-26-42 Page 604
1 1 Feb 01/98
1 1
1CES 1
R (3) Remove the clamp (5).
R (4) Remove the clamp (7) which holds the duct (2).
R R NOTE : Attach the isolation valve of the heat exchanger to the____ adjacent structure to prevent damage to the valve.
R (5) Remove the attachment screws (9), (4) and the washers (10), (3).
R (6) Carefully remove the ducts (2) and (12).
R (7) Remove and discard the O-ring (6).
R (8) Remove the flexible sleeve (13) from the duct (12).
R (9) Put blanking plugs on the disconnected line ends.
R **ON A/C ALL
Subtask 21-26-42-210-051
B. Make an Inspection of the Internal Structure
(1) Carefully examine the internal structure of the heat exchanger, specially the area with the drain holes.
(2) Make sure that this area has no corrosion, cracks, blocked drain holes, unwanted objects. Clean, if necessary.
(3) With a soft scraper, remove the gaskets (1), (11) and all bonding compound from the heat exchanger and the ducts. Discard the gaskets (1) and (11).
(4) Clean the contact faces of the heat exchanger and the ducts with cleaning agent CLEANING AGENTS (Material No. 11-008).
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