(2)
On the HP ground connector put a warning notice in position to tell persons not to supply the ground air.
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
(Ref. Fig. 401/TASK 21-52-23-991-001) R **ON A/C 401-499,
(Ref. Fig. 401A/TASK 21-52-23-991-001-A) R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Subtask 21-52-23-020-050
A. Removal of the Pipe Assembly
(1)
Remove the electrical connectors (9) and (17).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Disconnect the sense line (6).
(4)
Put blanking plugs on the disconnected line ends.
Pipe Assembly - Component Location
Figure 401/TASK 21-52-23-991-001
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-52-23Page 405 1201-299, 301-399, 1Aug 01/05 1 1 1CES 1
Pipe Assembly - Component Location
Figure 401A/TASK 21-52-23-991-001-A
R 1EFF : 401-499, 1 21-52-23 Page 406
1 1 Aug 01/05
1 1
1CES 1
(5) Remove and discard the nuts (1), the washers (2) and disconnect the retaining cables (3).
NOTE : Hold the hexagon part of the retaining cables (3) to prevent
____ twisting of the cables when you remove the nuts (1).
(6)
Remove and discard the lockwire and remove the clamp (15) and the half-clamps (12).
(7)
Hold the pipe assembly (21) and move the sleeve (16) clear of the packings (14).
(8)
Carefully remove the pipe assembly (21) from the sleeve (4).
(9)
Remove and discard the seal (5).
(10) Remove the sleeve (16) and remove and discard the packings (14).
(11) Put blanking plugs on the disconnected line ends. R **ON A/C 401-499,
Subtask 21-52-23-020-050-A
A. Removal of the Pipe Assembly
(1)
Remove the electrical connector (6).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Remove and discard the nuts (1), the washers (2) and disconnect the retaining cables (3).
NOTE : Hold the hexagon part of the retaining cables (3) to prevent
____ twisting of the cables when you remove the nuts (1).
(4)
Remove and discard the lockwire and remove the clamp (13) and the half-clamps (10).
(5)
Hold the pipe assembly (9) and move the sleeve (14) clear of the packings (12).
(6)
Carefully remove the pipe assembly (9) from the sleeve (4).
(7)
Remove and discard the seal (5).
(8)
Remove the the sleeve (14) and remove and discard the packings (12).
(9)
Put blanking plugs on the disconnected line ends.
R 1EFF : 401-499, 1 21-52-23Page 408 1 1 Aug 01/05 1 1 1CES 1 **ON A/C ALL
TASK 21-52-23-400-001
Installation of the Pipe Assembly between the Main Heat Exchanger and the Air Cycle Machine
WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1. Reason for the Job
__________________
If the pipe assembly is to be installed in conjunction with the installation of the heat exchanger unit (Ref. AMM Task 21-52-24-400-001) then the seal item (5) is not required, this seal is called for in the above referenced AMM Task.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs No specific Torque Wrench : range 0.00 to 1.20 m.daN
(0.00 to 9.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 04-007 USA MIL-M-7866 MOLYBDENUM DISULFIDE POWDER (Ref. 20-31-00) Material No. 04-012 USA VV-P-236 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) Material No. 06-007 USA SS-G-659 GRAPHITE POWDER DRY LUBRICANT (Ref. 20-31-00)
Material No. 19-009 USA AMS 5687 LOCKWIRE STAINLESS STEEL ANNEALED 0.5MM DIA (Ref. 20-31-00)
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