(3)
 Apply lubricant: CAUTION : USE ONLY THE SPECIFIED LUBRICANT TO LUBRICATE THE O-RINGS

_______ AND THE PACKINGS. OTHER LUBRICANTS CAN CAUSE SMOKE OR A SMELL IN THE CABIN WHEN THEY BECOME HOT.
 (a) Apply a small quantity of LUBRICANTS (Material No. 06-007) to the seal (14), the packings (2) and the packing (10).
 (4)
 Remove the blanking plugs from the disconnected line ends.

 (5)
 Clean the component interface and/or the adjacent area.

 (6)
 Put the seal (14) in position on the by-pass valve (5).

 (7)
 Put the by-pass valve (5) in position in the pipe assembly (8).

 (8)
 Put the packings (2) in position on the air-cycle machine flange (6) and the air-cycle machine (1).

 (9)
 Put the packing (10 ) in position on the anti-ice valve (3).

 (10)
 Put the by-pass valve (5) together with the pipe assembly (8) in position.

 (11)
 Install the clamps (7), (9) and (16) in position but do not tighten them at this time.

 (12)
 Position the by-pass valve (5) and the clamp (7).

 (a) Actuator Body Radial Position
 1 On by-pass valve P/N 758A0000-02 and previous:
_
 -make sure that when you look in a forward direction the by-pass valve actuator body is in the 9 o'clock position (horizontal).
 2 On by-pass valve P/N 1312A0000-01 and subsequent:
_
 -make sure that when you look in a forward direction the by-pass valve actuator body is between the 10 o'clock and 11 o'clock position (40 deg. vertically from the horizontal). This will make sure that the electrical connector (4) can be correctly installed.
 (b) At the Clamp (7):
 -make sure that when you look in a forward direction the nut of the clamp (7) is in the 10 o'clock position (at an angle of 60 degree from the vertical). This will make sure that the clamp (7) will not come in contact with the access panel 191KB (192KB).
 (13)
 TORQUE the clamps (7), (9) and (16) to between 0.51 and 0.56 m.daN

 (45.13 and 49.55 lbf.in).

 (14)
 Put the bonding strap (13) in position and install the screw (15), the washer (11) and the nut (12).

 (15)
 TORQUE the nut (12) to between 0.2 and 0.25 m.daN (17.69 and 22.12 lbf.in) (Ref. TASK 20-28-00-912-004).

 (16)
 Remove the blanking caps and connect the electrical connector (4).

 (17)
 Make sure that the work area is clean and clear of tool(s) and other items.

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 21-61-53-865-053
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
R (1) FOR 10HH
 -1HH, 2HH, 3HH, 4HH.

R  (2) FOR 30HH - 21HH, 22HH, 23HH, 24HH. 
R  **ON A/C 401-499,
 Subtask 21-61-53-865-053-A
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 
R  (1) FOR 10HH - 49HH, 50HH, 51HH, 52HH. 
R R (2) FOR 30HH - 53HH, 54HH, 55HH, 56HH. 
**ON A/C ALL
 Subtask 21-61-53-710-050
 C. Test
 (1) Do the pre-conditioning through the HP ground connector or with the APU (Ref. TASK 12-33-21-618-001) (Ref. TASK 12-33-21-618-001).
 (2) Do a leak check of the bypass valve connections.
 NOTE : Leaks are not permitted.____
 (3) After approx. 15 minutes stop the pre-conditioning (Ref. TASK 12-33-21-618-001) (Ref. TASK 12-33-21-618-001).
 (4) Do the operational test of the pack temperature-control system (Ref. TASK 21-61-00-710-001). 

R 1EFF : ALL 1 21-61-53Page 415 1 1 Aug 01/05 1 1 1CES 1

 5. Close-up
________ Subtask 21-61-53-410-052
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the access panel (Ref. TASK 53-35-13-400-002).

 (a)
 FOR 10HH
 191KB.

 (b)
 FOR 30HH
 192KB.

 Subtask 21-61-53-862-050
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 1EFF : ALL 1 21-61-53Page 416 1 1 Aug 01/05R 1 1 1CES 1

 COCKPIT AND CABIN TEMPERATURE CONTROL - DESCRIPTION AND OPERATION_________________________________________________________________
 1. General_______ 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 The cockpit and cabin temperature control system controls the temperature in the cockpit and cabin. You can set a different temperature for the cockpit and the cabin. The cabin is divided into the FWD zone and the AFT zone. Hot trim air, which is used for temperature control in the cockpit, the FWD cabin and the AFT cabin zones, is individually controlled under normal conditions in pressure and quantity. A back-up is provided and will take over control in a failure condition. 
　
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