W DOC AIRBUS | AMM A320F

Installation of the Air Conditioning Pack

TASK 21-52-41-400-001-A
Installation of the Air Conditioning Pack

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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
NOTE: The procedure is the same for the air conditioning pack 10HM (11HM).
FIN: 10HM
FIN: 11HM
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 to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in ) T
No specific
Torque wrench: range to between 0.407 and 0.333 m.daN (36.02 and 29.47 lbf.in ) T
No specific
Torque wrench: range to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ) T
No specific
Torque wrench: range to between 0.56 and 0.51 m.daN (49.56 and 45.13 lbf.in ) T
No specific
Torque wrench: range to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in ) T
No specific
Torque wrench: range to between 1.75 and 1.65 m.daN (12.91 and 12.17 lbf.ft ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03QBB9)
Dry lubricant-General Assembly Molybdenum Disulfide -
(Material No.03QBD1)
Dry lubricant-General Assembly Graphite -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [10HM] (PACK 1-AIR CONDITIONING)
191BB, 191KB
FOR [11HM] (PACK 2-AIR CONDITIONING)
192FB, 192KB
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
38
SEAL
AIPC 21-52-03-11-075
39
SEAL
AIPC 21-52-03-11-075
42
SEAL
AIPC 21-52-03-11-075
35
SEAL 64 INSTL
AIPC 21-52-03-11-420
36
SEAL
AIPC 21-52-03-11-420
37
SEAL
AIPC 21-52-03-11-420
38
SEAL
AIPC 21-52-03-11-420
39
SEAL 64 INSTL
AIPC 21-52-03-11-420
40
SEAL 64 INSTL
AIPC 21-52-03-11-420
41
SEAL 64 INSTL
AIPC 21-52-03-11-420
122
SEAL
AIPC 21-52-03-14-015
124
SEAL
AIPC 21-52-03-14-016
138
SEAL
AIPC 21-52-03-17-045
139
SEAL
AIPC 21-52-03-17-045
142
SEAL
AIPC 21-52-03-17-045
135
SEAL
AIPC 21-52-03-17-340
136
SEAL
AIPC 21-52-03-17-340
137
SEAL
AIPC 21-52-03-17-340
138
SEAL
AIPC 21-52-03-17-340
139
SEAL 64 INSTL
AIPC 21-52-03-17-340
140
SEAL 64 INSTL
AIPC 21-52-03-17-340
141
SEAL 64 INSTL
AIPC 21-52-03-17-340
122
SEAL
AIPC 21-52-03-20-015
222
SEALS
AIPC 21-52-03-20-015
124
SEAL
AIPC 21-52-03-20-016
224
SEAL
AIPC 21-52-03-20-016
137
PACKING-PREFORMED
AIPC 21-52-41-27-100
37
PACKING-PREFORMED
AIPC 21-52-41-27-100
36
SEAL
AIPC 21-52-83-03-320
37
SEAL
AIPC 21-52-83-03-320
38
SEAL
AIPC 21-52-83-03-320
39
SEAL
AIPC 21-52-83-03-350
136
SEAL
AIPC 21-52-83-10-270
137
SEAL
AIPC 21-52-83-10-270
138
SEAL
AIPC 21-52-83-10-270
139
SEAL
AIPC 21-52-83-10-300
124
SEAL
AIPC 21-52-83-14-100
122
SEAL
AIPC 21-52-83-14-110
51
SEALS
AIPC 21-58-03-01-450
141
SEAL
AIPC 21-58-83-01-480
51
SEALS
AIPC 21-58-83-01-660
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-33-21-618-001-A-01
Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02
Pre-conditioning with the APU
TASK 20-26-00-910-002-A
Installation of Expansion Joints
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A
Bonding Surface Preparation
TASK 21-58-00-710-002-A
Operational Test of the Conditioned Service Air System with Bleed Air
TASK 21-58-54-400-001-A
Installation of the Temperature Control Module
TASK 21-63-00-710-004-A
Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A
Installation of the Quick-Release Access Panels on the Belly Fairing Structure
F Access Panel Location
F Attachment Components
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
F Tie Rod and Bonding Connections
F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 21-52-41-860-050-A
A. Aircraft Maintenance Configuration

F Access Panel Location
   (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002) .
   (2) Make sure that the access panel/s is/are removed (Ref. AMM TASK 53-35-13-000-002).
     (a) FOR [10HM] (PACK 1-AIR CONDITIONING)
     (b) FOR [11HM] (PACK 2-AIR CONDITIONING)
   (3) On the panel 30VU make sure that:
     (a) The APU BLEED pushbutton switch is in the off position (the ON legend is off).
     (b) The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
     (c) The warning notice to tell persons not to operate these pushbutton switches is in position.
   (4) Make sure that the warning notice to tell persons not to supply the ground air is in position on the HP ground connector.
Subtask 21-52-41-865-051-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM (PACK 1AIR CONDITIONING)
49VUAIR COND/FLOW/CTL &/IND11HBD07
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAN28
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAP28
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
122VUCSAS / CTRL1HWU17
** ON A/C NOT FOR ALL
FOR FIN: 11HM (PACK 2AIR CONDITIONING)
122VUAIR COND/FLOW/CTL AND IND/22HBV21
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
4. Procedure
Subtask 21-52-41-420-055-A
A. Installation of the Attachment Components
F Attachment Components
   (1) Put the support rod (72a) in position on the support rod (72b) and install the bolt (3), the washer (1) and the nut (2).
   (2) Put the support rods (71), (72a) and (72b), (73), (74), (75), (77), (78), (79), (80), (81), (82) and (83) in their applicable positions in the brackets (101).
   (3) Install the bushings (98), if fitted the washers (97), the bolts (96), the washers (100) and the nuts (99).
Subtask 21-52-41-560-050-C ** ON A/C NOT FOR ALL
B. Preparation of the Replacement Component
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
NOTE: It is no longer required that the bonding strap (87) is fitted for the installation of the air conditioning pack.
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Remove the protective cover from the cooling elements of the air conditioning pack (4).
   (3) Clean the component interfaces and the adjacent area.
   (4) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (5) Make sure that:
     (a) For the left air conditioning pack the seals (122) and (124) are clean and in a good condition,
     (b) For the right air conditioning pack the seals (222) and (224) are clean and in a good condition,
   (6) For the left air conditioning pack put the seals (122) and (124) in position on the air conditioning pack (4).
   (7) For the right air conditioning pack put the seals (222) and (224) in position on the air conditioning pack (4).
   (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. AMM TASK 20-28-00-912-802).
   (10) Installation of the Seals (Ref. AMM TASK 20-26-00-910-002)
     (a) For the left air conditioning pack (10HM):
       1 Put the new AIPC 21-52-03-11-420 SEAL 64 INSTL (41), or the alternative new AIPC 21-52-03-11-420 SEAL 64 INSTL (39) and the new AIPC 21-52-03-11-420 SEAL 64 INSTL (40) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-11-075 SEAL (42) in position in the sleeve (31).
     (b) For the right air conditioning pack (11HM):
       1 Put the new AIPC 21-52-03-17-340 SEAL 64 INSTL (141), or the alternative new AIPC 21-52-03-17-340 SEAL 64 INSTL (139) and the new AIPC 21-52-03-17-340 SEAL 64 INSTL (140) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-17-045 SEAL (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).

F Attached Components ** ON A/C NOT FOR ALL
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 AIPC 21-52-41-27-100 PACKING-PREFORMED (37).
       3 Apply a small quantity of:
NOTE: The material 03QBB9 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 03QBD1 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 AIPC 21-52-41-27-100 PACKING-PREFORMED (137).
   (15) Apply a small quantity of:
NOTE: The material 03QBB9 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 03QBD1 is applied dry.
Subtask 21-52-41-560-050-D ** ON A/C NOT FOR ALL
B. Preparation of the Replacement Component
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Remove the protective cover from the cooling elements of the air conditioning pack (4).
   (3) Clean the component interfaces and the adjacent area.
   (4) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (5) Make sure that:
     (a) For the left air conditioning pack the seals (122) and (124) are clean and in a good condition,
     (b) For the right air conditioning pack the seals (222) and (224) are clean and in a good condition,
   (6) For the left air conditioning pack put the seals (122) and (124) in position on the air conditioning pack (4).
   (7) For the right air conditioning pack put the seals (222) and (224) in position on the air conditioning pack (4).
   (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. AMM TASK 20-28-00-912-802).
   (10) Installation of the Seals (Ref. AMM TASK 20-26-00-910-002)
     (a) For the left air conditioning pack (10HM):
       1 Put the new AIPC 21-52-03-11-420 SEAL (37), or the alternative new AIPC 21-52-03-11-420 SEAL 64 INSTL (35) and the new AIPC 21-52-03-11-420 SEAL (36) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-11-075 SEAL (38) in position in the sleeve (31).
     (b) For the right air conditioning pack (11HM):
       1 Put the new AIPC 21-52-03-17-340 SEAL (137), or the alternative new AIPC 21-52-03-17-340 SEAL (135) and the new AIPC 21-52-03-17-340 SEAL (136) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-17-045 SEAL (138) 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).

F Attached Components ** ON A/C NOT FOR ALL
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.
Subtask 21-52-41-560-050-E ** ON A/C NOT FOR ALL
B. Preparation of the Replacement Component
F Attached Components ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
NOTE: It is no longer required that the bonding strap (87) is fitted for the installation of the air conditioning pack.
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Remove the protective cover from the cooling elements of the air conditioning pack (4).
   (3) Clean the component interfaces and the adjacent area.
   (4) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (5) For the left air conditioning pack (10HM):
   (6) For the right air conditioning pack (11HM):
     (a) Make sure that the seals (122) and (124) are clean and in a good condition.
     (b) If necessary, replace the AIPC 21-52-03-20-015 SEAL (122) or AIPC 21-52-83-14-110 SEAL (122) and/or the AIPC 21-52-03-20-016 SEAL (124) or AIPC 21-52-83-14-100 SEAL (124) .
     (c) Put the seals (122) and (124) in position on the air conditioning pack (4).
     (d) 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).
     (e) Put the bonding strap (88) in position and install the screw (123), the washer (125) and the nut (126) (Ref. AMM TASK 20-28-00-912-802).
   (7) Installation of the Seals (Ref. AMM TASK 20-26-00-910-002)
     (a) For the left air conditioning pack (10HM):
       1 Put the new AIPC 21-52-03-11-420 SEAL (36) or AIPC 21-52-83-03-320 SEAL (36) and the new AIPC 21-52-03-11-420 SEAL (37) or AIPC 21-52-83-03-320 SEAL (37), or the alternative new AIPC 21-52-03-11-420 SEAL (38) or AIPC 21-52-83-03-320 SEAL (38) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-11-075 SEAL (39) or AIPC 21-52-83-03-350 SEAL (39) in position in the sleeve (31).
     (b) For the right air conditioning pack (11HM):
       1 Put the new AIPC 21-52-03-17-340 SEAL (136) or AIPC 21-52-83-10-270 SEAL (136) and the new AIPC 21-52-03-17-340 SEAL (137) or AIPC 21-52-83-10-270 SEAL (137), or the alternative new AIPC 21-52-03-17-340 SEAL (138) or AIPC 21-52-83-10-270 SEAL (138) in position in the sleeve (32).
       2 Put the new AIPC 21-52-03-17-045 SEAL (139) or AIPC 21-52-83-10-300 SEAL (139) in position in the sleeve (31).
   (8) Make sure that the clamp (30) is in position on the duct (35).
   (9) Put the sleeve (31) in position on the duct (35) 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.
   (10) Put the duct (33) in position in the sleeve (32).

F Attached Components ** ON A/C NOT FOR ALL
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.
Subtask 21-52-41-420-051-A
WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.
C. Install the Air Conditioning Pack
F Tie Rod and Bonding Connections
   (1) Carefully put the air conditioning pack (4) in position in the aircraft.
NOTE: The air conditioning pack weighs approx. 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.
   (4) Install the bushes (98), (where fitted the washers (97)), the bolts (96), the washers (100) and the nuts (99).
NOTE: The attachment parts must be installed in the tie rods in the following order:
  • At the tie rod (82), (80), (79), (78), (75), (74), (73), (72), (81), (77), (83) and (71).
   (5) Put the bonding strap (88) in position and install the screw (84), the washer (85) and the nut (86) (Ref. AMM TASK 20-28-00-912-802).
   (6) Put the bonding straps (102) in position and install the screws (101), the washers (103) and the nuts (104) (Ref. AMM TASK 20-28-00-912-802).
Subtask 21-52-41-420-052-A ** ON A/C NOT FOR ALL
D. Installation and Measurement of the Air Duct Sleeves

F Air Duct Connections ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
NOTE: You must turn the sleeves (31) and (32) when you move them. This will help to prevent damage to the swivel joints in the sleeve (31) and the seals in the sleeve (32).
   (1) Put the duct (33) in position and install the clamp (34).
   (2) Make sure that the clamp (34) has no contact with adjacent ducts.
   (3) TORQUE the clamp (34) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ) T.
   (4) Move the sleeve (32) until the "Z" dimensions are approx. equal.
   (5) Move the sleeve (31) in position on the air conditioning pack until you get the 4 mm (0.1575 in.) REF. dimension.
   (6) Put the clamp (30) in position on the duct (45) and move it until you get the 4 mm (0.1575 in.) REF. dimension.
   (7) Tighten the clamp (30).
   (8) Do a check of the "X" and the "Y" dimensions at the sleeves (32) and (31).
     (a) For the "X" dimension,
  • measure the maximum and the minimum "X" dimensions around the circumference of the sleeve (32),
  • the difference between the maximum and the minimum "X" dimensions must not be more than 1.7 mm (0.0669 in.).
     (b) For the "Y" dimension,
  • measure the maximum and the minimum "Y" dimensions around the circumference of the sleeve (31),
  • the difference between the maximum and the minimum "Y" dimensions must not be more than 1.2 mm (0.0472 in.).
NOTE: You can get the tolerance of 1.7 mm (0.0669 in.) and 1.2 mm (0.0472 in.) if you adjust the tie-rod/s (76) and/or (83).
Adjustment of the tie-rod (76) will give you a vertical difference.
Adjustment of the tie-rod (83) will give you a lateral difference.
You must only adjust the tie-rods (76) and (83).
Safety the tie-rod/s after you adjust them.

F Tie Rod and Bonding Connections ** ON A/C NOT FOR ALL
Subtask 21-52-41-420-052-B ** ON A/C NOT FOR ALL
D. Installation and Measurement of the Air Duct Sleeves

F Air Duct Connections ** ON A/C NOT FOR ALL
F Air Duct Connections ** ON A/C NOT FOR ALL
NOTE: You must turn the sleeves (31) and (32) when you move them. This will help to prevent damage to the swivel joints in the sleeve (31) and the seals in the sleeve (32).
   (1) Put the duct (33) in position and install the clamp (34).
   (2) Make sure that the clamp (34) has no contact with adjacent ducts.
   (3) TORQUE the clamp (34) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in ) T.
   (4) Move the sleeve (32) until the "Z" dimensions are approx. equal.
   (5) Move the sleeve (31) in position on the air conditioning pack until you get the 4 mm (0.1575 in.) REF. dimension.
   (6) Put the clamp (30) in position on the duct (35) and move it until you get the 4 mm (0.1575 in.) REF. dimension.
   (7) Tighten the clamp (30).
   (8) Do a check of the "X" and the "Y" dimensions at the sleeves (32) and (31).
     (a) For the "X" dimension,
  • measure the maximum and the minimum "X" dimensions around the circumference of the sleeve (32),
  • the difference between the maximum and the minimum "X" dimensions must not be more than 1.7 mm (0.0669 in.).
     (b) For the "Y" dimension,
  • measure the maximum and the minimum "Y" dimensions around the circumference of the sleeve (31),
  • the difference between the maximum and the minimum "Y" dimensions must not be more than 1.2 mm (0.0472 in.).
NOTE: You can get the tolerance of 1.7 mm (0.0669 in.) and 1.2 mm (0.0472 in.) if you adjust the tie-rod/s (76) and/or (83).
Adjustment of the tie-rod (76) will give you a vertical difference.
Adjustment of the tie-rod (83) will give you a lateral difference.
You must only adjust the tie-rods (76) and (83).
Safety the tie-rod/s after you adjust them.

F Tie Rod and Bonding Connections ** ON A/C NOT FOR ALL
Subtask 21-52-41-420-053-A ** ON A/C NOT FOR ALL
E. Installation of the Electrical and Sense Line Connections

F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Put the sense line (64) in position on the water extractor (63).
   (3) TORQUE the sense line (64) connector to between 1.75 and 1.65 m.daN (12.91 and 12.17 lbf.ft ) T.
   (4) Put the sense line (57) in position on the temperature pneumatic sensor (58).
   (5) TORQUE the sense line (57) connector to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in ) T.
   (6) Remove the blanking caps from the disconnected electrical connectors.
   (7) Connect the electrical connector (53) to the bypass valve (54).
   (8) Connect the electrical connector (52) to the anti ice valve (51).
   (9) Connect the electrical connectors (59) and (62) to the temperature sensors (60) and (61).
   (10) Connect the electrical connector (56) to the temperature sensor (55).
   (11) Connect the electrical connector (66) to the temperature sensor (65).
Subtask 21-52-41-420-053-C ** ON A/C NOT FOR ALL
E. Installation of the Electrical and Sense Line Connections

F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Put the sense line (64) in position on the water extractor (63).
   (3) TORQUE the sense line (64) connector to between 1.75 and 1.65 m.daN (12.91 and 12.17 lbf.ft ) T.
   (4) Put the sense line (57) in position on the temperature pneumatic sensor (58).
   (5) TORQUE the sense line (57) connector to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in ) T.
   (6) Remove the blanking caps from the disconnected electrical connectors.
   (7) Connect the electrical connector (53) to the bypass valve (54).
   (8) Connect the electrical connector (52) to the anti ice valve (51).
   (9) Connect the electrical connectors (59) and (62) to the temperature sensors (60) and (61).
   (10) Connect the electrical connector (56) to the temperature sensor (55).
   (11) Connect the electrical connector (66) to the temperature sensor (65).
   (12) Connect the electrical connector (67) to the solenoid (68).
Subtask 21-52-41-420-053-D ** ON A/C NOT FOR ALL
E. Installation of the Electrical and Sense Line Connections

F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Put the sense line (57) in position on the water extractor (58).
   (3) TORQUE the sense line (57) connector to between 1.75 and 1.65 m.daN (12.91 and 12.17 lbf.ft ) T.
   (4) Remove the blanking caps from the disconnected electrical connectors.
   (5) Connect the electrical connector (53) to the bypass valve (54).
   (6) Connect the electrical connector (52) to the temperature sensor (51).
   (7) Connect the electrical connector (55) to the temperature sensor (56).
   (8) Connect the electrical connector (59) to the temperature sensor (60).
Subtask 21-52-41-420-053-E ** ON A/C NOT FOR ALL
E. Installation of the Electrical and Sense Line Connections

F Electrical and Sense Line Connectors ** ON A/C NOT FOR ALL
   (1) Remove the blanking plugs from the disconnected line ends.
   (2) Put the sense line (57) in position on the water extractor (58).
   (3) TORQUE the sense line (57) connector to between 1.75 and 1.65 m.daN (12.91 and 12.17 lbf.ft ) T.
   (4) Put the sense line (61) in position on the temperature pneumatic sensor (62).
   (5) TORQUE the sense line (61) connector to between 1.2 and 1 m.daN (106.19 and 88.50 lbf.in ) T.
   (6) Remove the CAP-BLANKING from each electrical connector and receptacle.
   (7) Make sure that all the electrical connections are clean and in the correct condition.
   (8) Connect the electrical connector (53) to the bypass valve (54).
   (9) Connect the electrical connector (52) to the temperature sensor (51).
   (10) Connect the electrical connector (55) to the temperature sensor (56).
   (11) Connect the electrical connector (59) to the temperature sensor (60).
   (12) For the left air conditioning pack (10HM):
     (a) Connect the electrical connector (63) to the bypass valve (64).
     (b) Connect the electrical connector (65) to the pressure sensor (66).
     (c) Connect the electrical connector (67) to the temperature sensor (68).
Subtask 21-52-41-420-054-A ** ON A/C NOT FOR ALL
F. Installation of the Duct Connections and Cross Beam

F Air Duct Connections ** ON A/C NOT FOR ALL
   (1) Make sure that the pipe assembly (38) is in the correct position and install the clamp (36).
   (2) Make sure that the clamp (36) is in the correct position.
   (3) TORQUE the clamp (36) to between 0.56 and 0.51 m.daN (49.56 and 45.13 lbf.in ) T.
   (4) Put the sleeve (10) in position on the condensor flange (8) and install the clamp (9).
   (5) Make sure that the clamp (9) is in the correct position.
   (6) TORQUE the clamp (9) to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in ) T .
   (7) Put the bellows (3) in position on the inlet plenum flange (1) and install the clamp (2).
   (8) Put the sleeve (7) in position on the air outlet (5) and install the clamp (6).
   (9) Put the cross beam (11) in position in the brackets (12) and (15) and install the quick release pins (13) and (14).
Subtask 21-52-41-420-054-B ** ON A/C NOT FOR ALL
F. Installation of the Duct Connections and Cross Beam

F Air Duct Connections ** ON A/C NOT FOR ALL
   (1) Put the sleeve (10) in position on the condensor flange (8) and install the clamp (9).
   (2) Make sure that the clamp (9) is in the correct position.
   (3) TORQUE the clamp (9) to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in ) T .
   (4) Put the bellows (3) in position on the inlet plenum flange (1) and install the clamp (2).
   (5) Put the sleeve (7) in position on the air outlet (5) and install the clamp (6).
   (6) Put the cross beam (11) in position in the brackets (12) and (15) and install the quick release pins (13) and (14).
Subtask 21-52-41-420-054-C ** ON A/C NOT FOR ALL
F. Installation of the Duct Connections and Cross Beam
F Air Duct Connections ** ON A/C NOT FOR ALL
   (1) Put the sleeve (10) in position on the condenser flange (8) and install the clamp (9).
   (2) Make sure that the clamp (9) is in the correct position.
   (3) TORQUE the clamp (9) to between 0.308 and 0.252 m.daN (27.26 and 22.30 lbf.in ) T.
   (4) Put the bellow (3) in position on the inlet plenum flange (1) and install the clamp (2).
   (5) Put the bellow (7) in position on the air outlet (5) and install the clamp (6).
   (6) Put the cross beam (11) in position in the brackets (12) and (15) and install the quick release pins (13) and (14).
   (7) For the left air-conditioning pack (10HM):
     (a) Put the sleeves (42) in position on the ducts (44) and (45).
     (b) Put the ducts (44) and (45) and the bonding straps (47) and (48) in position.
     (c) Install the new AIPC 21-58-03-01-450 SEALS (51) or AIPC 21-58-83-01-660 SEALS (51).
     (d) Install the washers (40), the screws (46), the washers (49) and the nuts (50).
     (e) TORQUE the nuts (50) to between 0.407 and 0.333 m.daN (36.02 and 29.47 lbf.in ) T.
     (f) Install the clamps (43).
Subtask 21-52-41-420-054-E ** ON A/C NOT FOR ALL
F. Installation of the Cross Beam and the Duct Connections
F Air Duct Connections ** ON A/C NOT FOR ALL
   (1) Put the sleeve (10) in its correct installation position on the condenser flange (8).
   (2) Install the clamp (9).
   (3) Make sure that the clamp (9) is in its correct installation position.
   (4) Tighten the clamp (9).
   (5) Put the bellow of the air conditioning pack (4) in its correct installation position on the inlet plenum flange (1).
   (6) Install the clamp (2).
   (7) Tighten the clamp (2).
   (8) Put the bellow (7) in its correct installation position on the air outlet (5).
   (9) Install the clamps (6) and (53).
   (10) Tighten the clamps (6) and (53).
   (11) Put the cross beam (11) in its correct installation position in the brackets (12) and (15).
   (12) Install the quick-release pins (13) and (14).
   (13) Do the steps that follow for the left air-conditioning pack (10HM):
     (a) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
     (b) Install the new AIPC 21-58-83-01-480 SEAL (141).
     (c) Put the sleeves (42) in their correct installation positions on the ducts (44) and (45).
     (d) Install the new AIPC 21-58-83-01-660 SEALS (51).
     (e) Put the ducts (44) and (45) in their correct installation positions.
     (f) Put the heat shield (140) in its correct installation position.
     (g) Put the bonding straps (47) and (48) in their correct installation positions.
     (h) Install the washers (40), screws (46), washers (49) and nuts (50).
     (i) Install the clamps (43).
     (j) Tighten the nuts (50).
     (k) Tighten the clamps (43).
     (l) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
Subtask 21-52-41-865-055-A
G. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM (PACK 1AIR CONDITIONING)
49VUAIR COND/FLOW/CTL &/IND11HBD07
** ON A/C NOT FOR ALL
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 11HM (PACK 2AIR CONDITIONING)
122VUAIR COND/FLOW/CTL AND IND/22HBV21
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-41-865-054-A
H. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAN28
** ON A/C NOT FOR ALL
121VUIGGS/CTRL7YAP28
** ON A/C NOT FOR ALL
122VUCSAS / CTRL1HWU17
Subtask 21-52-41-710-051-A ** ON A/C NOT FOR ALL
I. Test
WARNING: DO NOT TOUCH THE COMPONENT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS.
   (1) Do the pre-conditioning through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
   (2) Do a leak check of the air conditioning pack.
NOTE: Minimum leakage is permitted. After the pack operates some minutes, the leakage of air will reduce because the seals have their correct operating temperature.
   (3) Do a leak check of the sense line connections.
NOTE: Leaks are not permitted.
   (4) After approx. 15 minutes stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
   (5) Do the operational test of the cockpit and cabin temperature control (Ref. AMM TASK 21-63-00-710-004).
Subtask 21-52-41-710-051-B ** ON A/C NOT FOR ALL
I. Test
   (1) Do the pre-conditioning through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
   (2) Do a leak check of the air conditioning pack.
NOTE: Minimum leakage is permitted. After the pack operates some minutes, the leakage of air will reduce because the seals have their correct operating temperature.
   (3) Do a leak check of the sense line connections.
NOTE: Leaks are not permitted.
   (4) After approx. 15 minutes stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001).
   (5) Do the operational test of the conditioned service air system with bleed air (Ref. AMM TASK 21-58-00-710-002).
   (6) Do the operational test of the cockpit and cabin temperature control (Ref. AMM TASK 21-63-00-710-004).
5. Close-up
Subtask 21-52-41-410-050-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access panels (Ref. AMM TASK 53-35-13-400-002).
     (a) FOR [10HM] (PACK 1-AIR CONDITIONING)
     (b) FOR [11HM] (PACK 2-AIR CONDITIONING)
   (3) Remove the WARNING NOTICE(S).
Subtask 21-52-41-862-050-A
B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.03.31 23:07:21 UTC
"Aviabrain" 2025