TASK 21-52-23-400-002
Installation of the Pipe Assembly between the Anti-Ice Valve (if installed), the Bypass Valve 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
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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. 06-007 USA SS-G-659 GRAPHITE POWDER DRY LUBRICANT (Ref. 20-31-00)
1EFF : ALL 1 21-52-23Page 431 1 1 Aug 01/05R 1 1 1CES 1
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
2 packing
2 packing
3 packing
3 packing
4 seal
4 seal
4 seal
R
D. Referenced Information
21-52-03 27B-02021-52-03 27B-020A21-52-03 27B-05521-52-03 27B-055A21-52-03 27B-03521-52-03 27B-035A21-52-03 27B-035B
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 12-33-21-618-001 20-26-00-910-002 21-52-00-200-002 Pre-conditioning through the HP Ground ConnectionPre-conditioning with the APUInstallation of Expansion JointsDetailed Visual Inspection of Pipe-Assemblies between the Heat Exchanger Unit, the Bypass Valve, the Anti-Ice Valve (if installed) and the Air Cycle Machine
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power
24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power
53-35-13-000-002 Removal of the Quick-Release Access Panels from the
53-35-13-400-002 Belly Fairing StructureInstallation of the Quick-Release Access Panels on
the Belly Fairing Structure
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
21-52-23-991-002 Fig. 402 R **ON A/C 401-499, R 21-52-23-991-002-B Fig. 402A **ON A/C ALL
3. Job Set-up
__________ Subtask 21-52-23-860-052
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a)
The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(b)
The access panel is removed (Ref. TASK 53-35-13-000-002), FOR 10HM12 191KB, FOR 11HM12 192KB.
(c)
On the panel 30VU:
1_ The APU BLEED pushbutton switch is in the off position (the ON
legend is off).
2_ The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in
the off position (the OFF legends are on).
3_ The warning notice to tell persons not to operate these
pushbutton switches is in position.
(d) On the HP ground connector the warning notice to tell persons not to supply ground air is in position.
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Subtask 21-52-23-865-055
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 10HM12
R **ON A/C 401-499,
R 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399, 52HH D08
R 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 1HH 3HH X22X21
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
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