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(2) Put the fitting (21) in position in the brackets (20) and install the bushings (6), the bolts (5), the washers (4) and the nuts (3).
Subtask 21-51-51-420-060
B. Installation of the Pack Flow-Control Unit
NOTE : Turn flanges or seals when you move them. This will help to
____ prevent damage to the associated seals and sliding surfaces of the components.
(1)
Remove the protective covers from the pack flow-control unit (17) and the heat exchanger unit connecting-end (15).
(2)
Clean the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(4)
Make sure that:
(a)
the seal retaining grooves in the sleeve (14) are clean and dry.
(b)
the sliding surfaces of the flange (13) and the heat exchanger unit connecting-end (15) are clean and dry.
(5)
Installation of the Seals (Ref. TASK 20-26-00-910-002)
(a)
For the pack flow-control unit 23HB put the new seals (31) in position in the sleeve (14).
(b)
For the pack flow-control unit 24HB put the new seals (131) in position in the sleeve (14).
(6)
Put the flange (13) in position in the sleeve (14).
(7)
Put the sleeve (14) together with the flange (13) in position on the heat exchanger unit connecting-end (15).
(8)
Move the sleeve (14) together with the flange (13) as far to the heat exchanger unit as possible.
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(9) Carefully put the pack flow-control unit (17) in position on the mounting (12).
NOTE : You must make sure that:
____
-the arrow on the body of the pack flow-control unit (17) points in the direction of the heat exchanger unit (15).
(10)
Install the spacers (20), the bolts (19), the washers (21) and the nuts (22).
(11)
Carefully move the flange (13) and the sleeve (14) in position on the pack flow-control unit (17).
(12)
Put the clamp (16) in position on the flange (13) and the pack flow-control system (17).
(13)
TORQUE the clamp (16) to between 0.40 and 0.50 m.daN (35.39 and 44.24 lbf.in).
(14)
Put the bonding strap (25) in position and install the screw (18), the washer (24) and the nut (23) (Ref. TASK 20-28-00-912-004).
(15)
Remove the blanking caps from the electrical connectors.
(16)
Make sure that the electrical connectors are clean and in the correct condition.
(17)
Connect the electrical connectors (2), (3) and (4). Subtask 21-51-51-410-059
C. Installation of the Air Duct upstream of the Flow Control Unit
(1)
Install the air duct (Ref. TASK 21-51-51-400-002). Subtask 21-51-51-220-058
D. Post Installation Measurement and Adjustment
(1) Locations.
(a) At the sleeve (14):
1_ Move the sleeve (14) until the Z dimensions are approximately
equal.
NOTE : Turn the sleeve when you move it.____
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This will help to prevent damage to the seals in the sleeve.
2_ Do a check of the Y dimension: - measure the maximum and minimum Y dimensions around the circumference of the sleeve (14), - the difference between the maximum and minimum Y dimensions must not be more than 1.7 mm (0.0669 in.).
(b) At the mounting (21):
1_ do a check of the dimension V between the mounting (21) and the bracket (20). - this dimension must not be less than 1.2 mm (0.0472 in.).
NOTE : You can get these tolerances if you adjust:____ - on the heat exchanger unit the tie-rod (1) and,
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