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(8)
Put the inlet plenum (127) in position on the air conditioning pack
(4) and install the screws (121), the washers (128) and the nuts (129).
(9)
Put the bonding strap (88) in position and install the screw (123), the washer (125) and the nut (126) (Ref. TASK 20-28-00-912-004).
(10) Installation of the Seals (Ref. TASK 20-26-00-910-002)
(a) For the left air conditioning pack (10HM): 1 Put the new seals (41), or the alternative new seals (39) and
_ the new seals (40) in position in the sleeve (32).
2 Put the new seals (42) in position in the sleeve (31).
_
(b) For the right air conditioning pack (11HM): 1 Put the new seals (141), or the alternative new seals (139)
_ and the new seals (140) in position in the sleeve (32).
2 Put the new seals (142) in position in the sleeve (31).
_
(11)
Make sure that the clamp (30) is in position on the duct (43).
(12)
Put the sleeve (31) in position on the duct (43) and move it as far on the duct as it will go.
NOTE : Turn the sleeve (31) when you install it. This will help to
____
prevent damage to the seals.
(13) Put the duct (33) in position in the sleeve (32). R **ON A/C 106-149, 211-299, 301-399,
(Ref. Fig. 405/TASK 21-52-41-991-005) R **ON A/C 401-499,
R (Ref. Fig. 405A/TASK 21-52-41-991-005-A)
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NOTE : Turn the sleeve (32) and the duct (33) when you move them or
____ when you install them. This will help to prevent damage to the internal seals.
(a) Put the sleeve (32) and the duct (33) in position on the heat exchanger flange (120).
NOTE : Make sure that you move the sleeve (32) and the duct (33)
____ as close to the heat exchanger as possible.
(14) Examine the pipe assembly (38),
(a) For the left air conditioning pack: 1 Make sure that the O-ring (37) is clean, in a good condition
_ and that it is correctly installed.
2 If necessary replace the O-ring (37).
_
3 Apply a small quantity of:
_
-COMMON GREASE (Material No. 04-007) or
-LUBRICANTS (Material No. 06-007) to the O-ring (37) before you install it.
NOTE : The material 04-007 is a molybdenum disulfide powder.
____ Before you can apply it you must first make it into a paste. To do this you must mix the powder with pure water or white spirit.
NOTE : The material 06-007 is applied dry.
____
(b) For the right air conditioning pack: 1 Make sure that the O-ring (137) is clean, in a good condition
_ and that it is correctly installed.
2 If necessary replace the O-ring (137).
_
R 1EFF : 106-149, 211-299, 301-399, 401-499, 1 21-52-41Page 438 1 1 Aug 01/05 1 1 1CES 1 (15) Apply a small quantity of:
-COMMON GREASE (Material No. 04-007)
or
-LUBRICANTS (Material No. 06-007)
to the O-ring (137) before you install it.
NOTE : The material 04-007 is a molybdenum disulfide powder.
____ Before you can apply it you must first make it into a paste. To do this you must mix the powder with pure water or white spirit.
NOTE : The material 06-007 is applied dry.
____
**ON A/C ALL
Subtask 21-52-41-420-051
C. Install the Air Conditioning Pack
WARNING : SUPPORT THE UNIT/ASSEMBLY OR IT WILL FALL AND BECOME DAMAGED OR
_______
INJURE PERSONNEL. THE UNIT/ASSEMBLY IS HEAVY.
(Ref. Fig. 404/TASK 21-52-41-991-004)
(1) Carefully put the air conditioning pack (4) in position in the aircraft.
NOTE : The air conditioning pack weighs aprx. 79 kg (174.1651 lb).
____ You must take care not to bend or twist the air conditioning pack as this can cause damage to the component.
(2)
Put the clevis (93) in position and install the bush (94), (where fitted the washer (95)), the bolt (89), the washer (92) and the nut (91).
(3)
Put the tie rods (71), (72), (73), (74), (75), (77), (78), (79), (80), (81), (82) and (83) in position.
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