Pack Flow-Control Valve
 Figure 401B/TASK 21-51-51-991-001-D23 (SHEET 2)

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 Pack Flow-Control Valve
 Figure 401B/TASK 21-51-51-991-001-D33 (SHEET 3)

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 Subtask 21-51-51-020-062
 B. Removal of the Attachment Fitting
 (Ref. Fig. 402/TASK 21-51-51-991-003)

 (1)
 Remove the nuts (3), the washers (4), the bolts (5), the bushings (6) and the fitting (1).

 (2)
 Do the inspection of the components for in-service wear (Ref. TASK 21-51-51-200-001).

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 Attachment Components - Pack Flow-Control Valve Figure 402/TASK 21-51-51-991-003
 1EFF : 1 1R 1CES  ALL  1 11 1 21-51-51 Page 418 Nov 01/02

 TASK 21-51-51-400-001
 Installation of the Pack Flow-Control Valve
 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.

 NOTE : The procedure is the same for the pack flow-control valves 8HB and 11HB.
____
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (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. 04-014A USA MIL-PRF-907 HIGH TEMPERATURECOMPOUND (Ref. 20-31-00) Material No. 05-002 USA MIL-P-8116 PUTTY, ZINC CHROMATE GENERAL PURPOSE (Ref. 20-31-00) Material No. 06-007 USA SS-G-659 GRAPHITE POWDER DRY LUBRICANT (Ref. 20-31-00)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 21-51-51Page 419 1201-299, 301-302, 1May 01/05 1 1 1CES 1 C. Expendable Parts

 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
R  31 seals
R  31 seals 31 seals 31 seals 131 seals 131 seals 131 seals 131 seals
D. Referenced Information21-52-03 11A-420 21-52-03 11A-420A21-52-03 11B-42021-52-03 11B-420A21-52-03 17A-39021-52-03 17A-390A21-52-03 17B-39021-52-03 17B-390A
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 12-33-21-618-001 20-26-00-910-002 20-28-00-912-004 21-51-00-710-002 21-51-41-400-001 21-51-51-400-002  Pre-conditioning through the HP Ground ConnectionPre-conditioning with the APUInstallation of Expansion JointsElectrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-Operational Test of the Flow Control and Indicating SystemInstallation of the Ozone Filter 100HM (101HM)Installation of the Air Duct upstream of the Flow Control Valve
 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 001-003, 051-054, 21-51-51-991-001-C Fig. 401
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 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R  **ON A/C 004-049, 055-099, 101-105, 151-158, 201-209,
R R R  21-51-51-991-001 Fig. 401A **ON A/C 004-049, 055-099, 101-105, 151-199, 201-299, 301-302, Post SB 21-1134 For A/C 004-049,055-099,101-105,151-158,201-209, 21-51-51-991-001-D Fig. 401B **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
　
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