DOC AIRBUS | AMM A320FInstallation of the Pipe Assembly between the Main Heat Exchanger and the Air Cycle Machine
TASK 21-52-23-400-001-A
Installation of the Pipe Assembly between the Main Heat Exchanger and the Air Cycle Machine
If the pipe assembly is to be installed in conjunction with the installation of the heat exchanger unit (Ref. AMM Task 21-52-24-400-001) then the seal item (5) is not necessary, this seal is given in the above referred AMM Task.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 21-52-23-860-050-A
Subtask 21-52-23-560-050-A ** ON A/C NOT FOR ALL
Subtask 21-52-23-410-056-A
[Rev.10 from 2021]
2026.04.02 06:11:27 UTC
Installation of the Pipe Assembly between the Main Heat Exchanger and the Air Cycle Machine
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.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
NOTE: The procedure for the installation of the pipe assembly is the same for the left and right side.
1. Reason for the JobIf the pipe assembly is to be installed in conjunction with the installation of the heat exchanger unit (Ref. AMM Task 21-52-24-400-001) then the seal item (5) is not necessary, this seal is given in the above referred AMM Task.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| (Material No.03QBB9) | Dry lubricant-General Assembly Molybdenum Disulfide - |
| (Material No.03QBD1) | Dry lubricant-General Assembly Graphite - |
| (Material No.14QDB1) | Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy - |
| (Material No.14QFB1) | Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [10HM] (PACK 1-AIR CONDITIONING) | |
| 191KB | |
| FOR [11HM] (PACK 2-AIR CONDITIONING) | |
| 192KB | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 12 | PACKING | AIPC 21-52-41-29-070 |
| 14 | PACKING | AIPC 21-52-41-29-070 |
| 1 | NUT | AIPC 21-52-41-29-090 |
| 2 | WASHER | AIPC 21-52-41-29-100 |
| 5 | SEAL | AIPC 21-52-41-29-130 |
| 22 | PACKING | AIPC 21-52-41-29-300 |
| 11 | PACKING | AIPC 21-61-03-08-050 |
| 8 | PACKING | AIPC 21-61-03-08-050 |
| 8 | PACKING | AIPC 21-61-83-08-040 |
| 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 21-52-00-200-002-A | Detailed Visual Inspection of the Pipe Assemblies between the Heat Exchanger Unit, the Bypass Valve, the Anti-Ice Valve (if installed) and the Air Cycle Machine |
| 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 |
Pipe Assembly - Component LocationSubtask 21-52-23-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The access panel is removed (Ref. AMM TASK 53-35-13-000-002):
1 FOR [10HM] (PACK 1-AIR CONDITIONING)
2 FOR [11HM] (PACK 2-AIR CONDITIONING)
(c) On the overhead panel, on AIR COND panel 30VU:
1 The APU BLEED pushbutton switch is released (the ON legend is off).
2 The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are released (the OFF legends are on).
3 The warning notice is in position to tell persons not to operate these pushbutton switches.
(d) On the HP ground connector, the warning notice is in position to tell persons not to supply ground air.
Subtask 21-52-23-865-052-A (1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The access panel is removed (Ref. AMM TASK 53-35-13-000-002):
1 FOR [10HM] (PACK 1-AIR CONDITIONING)
2 FOR [11HM] (PACK 2-AIR CONDITIONING)
(c) On the overhead panel, on AIR COND panel 30VU:
1 The APU BLEED pushbutton switch is released (the ON legend is off).
2 The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are released (the OFF legends are on).
3 The warning notice is in position to tell persons not to operate these pushbutton switches.
(d) On the HP ground connector, the warning notice is in position to tell persons not to supply ground air.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 10HM (PACK 1AIR CONDITIONING) | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/PACK TEMP/CTL SYS1/1/115VAC | 1HH | X22 |
| 122VU | AIR COND/PACK TEMP/CTL SYS1/1/28VDC | 3HH | X21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/1/28VDC | 4HH | Y19 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/1/115VAC | 2HH | Y18 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 11HM (PACK 2AIR CONDITIONING) | |||
| 122VU | AIR COND/PACK TEMP/CTL SYS1/2/115VAC | 21HH | W22 |
| 122VU | AIR COND/PACK TEMP/CTL SYS1/2/28VDC | 23HH | W21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/2/28VDC | 24HH | Y21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/2/115VAC | 22HH | Y20 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
Subtask 21-52-23-560-050-A ** ON A/C NOT FOR ALL
A. Preparation of the Replacement Component
(1) Remove and discard the lockwire from the sensors (10) and (18).
(2) Remove the sensors (10) and (18).
(3) Remove and discard the packings (11).
(4) Remove and discard the lockwire from the screws (7).
(5) Remove the screws (7), the washers (8) and the sensor (23).
(6) Remove and discard the packing (22).
(7) Put the PLUG-BLANKING in each disconnected line end.
(8) Do the visual inspection of the pipe assembly (Ref. AMM TASK 21-52-00-200-002).
(9) Remove the PLUG-BLANKING from each disconnected line end.
(10) Clean the component interfaces and the adjacent area.
(11) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the new AIPC 21-61-03-08-050 PACKING (11) and AIPC 21-52-41-29-300 PACKING (22), the sensors (10) and (18) and the screws (7).
(12) Put the packings (11) in position on the sensors (10) and (18).
(13) Put the sensors (10) and (18) in position in the pipe assembly (21).
(14) TORQUE the sensors (10) and (18) to between 1.0 and 0.8 m.daN (88.50 and 70.80 lbf.in )
.
(15) Put the packing (22) in position on the sensor (23).
(16) Put the sensor (23) in position in the pipe assembly (21).
(17) Install the washers (8) and the screws (7).
(18) Tighten the screws (7).
(19) Remove the unwanted consumable material from the sensors (10) and (18) and the screws (7).
(20) Safety the sensors (10) and (18) and the screws (7) with 0.5 mm (0.0197 in.)14QDB1 Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy -
Subtask 21-52-23-560-050-C ** ON A/C NOT FOR ALL (1) Remove and discard the lockwire from the sensors (10) and (18).
(2) Remove the sensors (10) and (18).
(3) Remove and discard the packings (11).
(4) Remove and discard the lockwire from the screws (7).
(5) Remove the screws (7), the washers (8) and the sensor (23).
(6) Remove and discard the packing (22).
(7) Put the PLUG-BLANKING in each disconnected line end.
(8) Do the visual inspection of the pipe assembly (Ref. AMM TASK 21-52-00-200-002).
(9) Remove the PLUG-BLANKING from each disconnected line end.
(10) Clean the component interfaces and the adjacent area.
(11) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the new AIPC 21-61-03-08-050 PACKING (11) and AIPC 21-52-41-29-300 PACKING (22), the sensors (10) and (18) and the screws (7).
(12) Put the packings (11) in position on the sensors (10) and (18).
(13) Put the sensors (10) and (18) in position in the pipe assembly (21).
(14) TORQUE the sensors (10) and (18) to between 1.0 and 0.8 m.daN (88.50 and 70.80 lbf.in )
. (15) Put the packing (22) in position on the sensor (23).
(16) Put the sensor (23) in position in the pipe assembly (21).
(17) Install the washers (8) and the screws (7).
(18) Tighten the screws (7).
(19) Remove the unwanted consumable material from the sensors (10) and (18) and the screws (7).
(20) Safety the sensors (10) and (18) and the screws (7) with 0.5 mm (0.0197 in.)
A. Preparation of the Replacement Component
(1) Remove and discard the lockwire from the sensor (7).
(2) Remove the sensor (7).
(3) Remove and discard the packing (8).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Do the visual inspection of the pipe assembly (Ref. AMM TASK 21-52-00-200-002).
(6) Remove the PLUG-BLANKING from each disconnected line end.
(7) Clean the component interfaces and the adjacent area.
(8) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the new AIPC 21-61-03-08-050 PACKING (8) or AIPC 21-61-83-08-040 PACKING (8) and the sensor (7).
(9) Put the packing (8) in position on the sensor (7).
(10) Put the sensor (7) in position in the pipe assembly (9).
(11) TORQUE the sensor (7) to between 1.0 and 0.8 m.daN (88.50 and 70.80 lbf.in ).
(12) Remove the unwanted consumable material from the sensor (7).
(13) Safety the sensor (7) with 0.5 mm (0.0197 in.)14QDB1 Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy -
Subtask 21-52-23-420-052-D ** ON A/C NOT FOR ALL (1) Remove and discard the lockwire from the sensor (7).
(2) Remove the sensor (7).
(3) Remove and discard the packing (8).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Do the visual inspection of the pipe assembly (Ref. AMM TASK 21-52-00-200-002).
(6) Remove the PLUG-BLANKING from each disconnected line end.
(7) Clean the component interfaces and the adjacent area.
(8) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the new AIPC 21-61-03-08-050 PACKING (8) or AIPC 21-61-83-08-040 PACKING (8) and the sensor (7).
(9) Put the packing (8) in position on the sensor (7).
(10) Put the sensor (7) in position in the pipe assembly (9).
(11) TORQUE the sensor (7) to between 1.0 and 0.8 m.daN (88.50 and 70.80 lbf.in )
. (12) Remove the unwanted consumable material from the sensor (7).
(13) Safety the sensor (7) with 0.5 mm (0.0197 in.)
B. Installation of the Pipe Assembly
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Remove the PLUG-BLANKING from each disconnected line end.
(3) Clean the component interfaces and the adjacent area.
(4) Apply lubricant:
2 Apply the material 03QBD1 dry.
(5) Put the sleeve (16) on the air-cycle machine outlet (13).
(6) Put the packings (14) in position on the pipe assembly (21) and on the air-cycle machine outlet (13).
(7) Put the new AIPC 21-52-41-29-130 SEAL (5) in position in the sleeve (4) (Ref. AMM TASK 20-26-00-910-002).
(8) Put the pipe assembly (21) in position in the sleeve (4). Turn the pipe assembly (21) when you install it to prevent damage to the seal (5).
(9) Move the sleeve (16) in position over the packings (14). Make sure that the sleeve (16) makes an overlap on the flanges of the air-cycle machine outlet (13) and the pipe assembly (21).
(10) Put the half-clamps (12) in position and install the clamp (15).
(11) Do not fully tighten the clamp (15) at this time.
(12) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the retaining cables (3).
(13) Make sure that the pipe assembly (21) is correctly aligned to the sleeve (4) and the air-cycle machine outlet (13).
(14) Put the retaining cables (3) in position.
(15) Before you install the nuts (1), hold the hexagon part of the retaining cables (3) to prevent twisting of the retaining cables (3).
(16) Install the new AIPC 21-52-41-29-100 WASHER (2) and the new AIPC 21-52-41-29-090 NUT (1).
(17) Before you torque the nuts (1), hold the hexagon part of the retaining cables (3) to prevent twisting of the retaining cables (3).
(18) TORQUE the nuts (1) to between 0.85 and 0.8 m.daN (75.22 and 70.80 lbf.in ).
(19) Make sure that the cables (3) are not twisted.
(21) Make sure that the half-clamps (12) and the clamp (15) are in the correct position.
(22) TORQUE the clamp (15) to between 0.35 and 0.30 m.daN (30.97 and 26.55 lbf.in ) and safety it with 0.8 mm (0.0315 in.) 14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(24) TORQUE the sense line connector (6) to between 1.05 and 0.95 m.daN (92.92 and 84.07 lbf.in ).
(25) Remove the blanking caps from the electrical connectors (9) and (17).
(26) Make sure that all the electrical connections are clean and in the correct condition.
(27) Connect the electrical connectors (9) and (17).
(28) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-52-23-420-052-E ** ON A/C NOT FOR ALL (1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Remove the PLUG-BLANKING from each disconnected line end.
(3) Clean the component interfaces and the adjacent area.
(4) 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: - Dry lubricant-General Assembly Molybdenum Disulfide - (Material No.03QBB9)
or - Dry lubricant-General Assembly Graphite - (Material No.03QBD1)
to the new AIPC 21-52-41-29-070 PACKING (14) as follow:
2 Apply the material 03QBD1 dry.
(5) Put the sleeve (16) on the air-cycle machine outlet (13).
(6) Put the packings (14) in position on the pipe assembly (21) and on the air-cycle machine outlet (13).
(7) Put the new AIPC 21-52-41-29-130 SEAL (5) in position in the sleeve (4) (Ref. AMM TASK 20-26-00-910-002).
(8) Put the pipe assembly (21) in position in the sleeve (4). Turn the pipe assembly (21) when you install it to prevent damage to the seal (5).
(9) Move the sleeve (16) in position over the packings (14). Make sure that the sleeve (16) makes an overlap on the flanges of the air-cycle machine outlet (13) and the pipe assembly (21).
(10) Put the half-clamps (12) in position and install the clamp (15).
(11) Do not fully tighten the clamp (15) at this time.
(12) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the contact faces of the retaining cables (3).
(13) Make sure that the pipe assembly (21) is correctly aligned to the sleeve (4) and the air-cycle machine outlet (13).
(14) Put the retaining cables (3) in position.
(15) Before you install the nuts (1), hold the hexagon part of the retaining cables (3) to prevent twisting of the retaining cables (3).
(16) Install the new AIPC 21-52-41-29-100 WASHER (2) and the new AIPC 21-52-41-29-090 NUT (1).
(17) Before you torque the nuts (1), hold the hexagon part of the retaining cables (3) to prevent twisting of the retaining cables (3).
(18) TORQUE the nuts (1) to between 0.85 and 0.8 m.daN (75.22 and 70.80 lbf.in )
. (19) Make sure that the cables (3) are not twisted.
NOTE: This will give a safe and flexible connection.
(20) Remove the unwanted consumable material from the retaining cables (3). (21) Make sure that the half-clamps (12) and the clamp (15) are in the correct position.
(22) TORQUE the clamp (15) to between 0.35 and 0.30 m.daN (30.97 and 26.55 lbf.in )
and safety it with 0.8 mm (0.0315 in.) NOTE: Installation of lockwire is only necessary on clamp(s) with a hole in the screw.
(23) Connect the sense line connector (6). (24) TORQUE the sense line connector (6) to between 1.05 and 0.95 m.daN (92.92 and 84.07 lbf.in )
. (25) Remove the blanking caps from the electrical connectors (9) and (17).
(26) Make sure that all the electrical connections are clean and in the correct condition.
(27) Connect the electrical connectors (9) and (17).
(28) Make sure that the work area is clean and clear of tools and other items.
B. Installation of the Pipe Assembly
(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(a) Apply a small quantity of Dry lubricant-General Assembly Molybdenum Disulfide - (Material No.03QBB9) powder as a paste. To make a paste, mix the molybdenum disulfide powder with pure water or white spirit.
(b) Apply a small quantity of Dry lubricant-General Assembly Molybdenum Disulfide - (Material No.03QBB9) or Dry lubricant-General Assembly Graphite - (Material No.03QBD1) to the new AIPC 21-52-41-29-070 PACKING (12) before you install it.
(6) Put the packings (12) in position on the pipe assembly (9) and the air-cycle machine outlet (11).
(7) Put the new AIPC 21-52-41-29-130 SEAL (5) in position in the sleeve (4) (Ref. AMM TASK 20-26-00-910-002).
(8) Put the pipe assembly (9) in position in the sleeve (4).
(9) To prevent damage to the seal (5), turn the pipe assembly (9) when you move or install it.
(10) Move the sleeve (14) in position on the packings (12).
(11) Make sure that the sleeve (14) makes an overlap on the flanges of the air-cycle machine outlet (11) and the pipe assembly (9).
(12) Put the half-clamps (10) in position and install the clamp (13).
(13) Do not fully tighten the clamp (13) at this time.
(14) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the mating surfaces of the retaining cables (3).
(15) Make sure that the pipe assembly (9) is correctly aligned with the sleeve (4) and the air-cycle machine outlet (11).
(16) Put the retaining cables (3) in position.
(17) Hold the hexagonal part of the retaining cables (3).
(18) Install the new AIPC 21-52-41-29-100 WASHER (2) and the new AIPC 21-52-41-29-090 NUT (1).
(20) TORQUE the nuts (1) to between 0.85 and 0.8 m.daN (75.22 and 70.80 lbf.in ).
(23) Make sure that the half-clamps (10) and the clamp (13) are in their correct installation positions.
(24) TORQUE the clamp (13) to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in ).
14QDB1 Wire-Locking Dia: 0.5 mm (0.020 inch) CRES Nickel Alloy -
(28) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-52-23-865-065-A (1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Remove the PLUG-BLANKING from each disconnected line end.
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.
(4) Apply the lubricant as follows:(a) Apply a small quantity of Dry lubricant-General Assembly Molybdenum Disulfide - (Material No.03QBB9) powder as a paste. To make a paste, mix the molybdenum disulfide powder with pure water or white spirit.
(b) Apply a small quantity of Dry lubricant-General Assembly Molybdenum Disulfide - (Material No.03QBB9) or Dry lubricant-General Assembly Graphite - (Material No.03QBD1) to the new AIPC 21-52-41-29-070 PACKING (12) before you install it.
NOTE: Dry lubricant-General Assembly Graphite - (Material No.03QBD1) is applied dry.
(5) Put the sleeve (14) on the air-cycle machine outlet (11). (6) Put the packings (12) in position on the pipe assembly (9) and the air-cycle machine outlet (11).
(7) Put the new AIPC 21-52-41-29-130 SEAL (5) in position in the sleeve (4) (Ref. AMM TASK 20-26-00-910-002).
(8) Put the pipe assembly (9) in position in the sleeve (4).
(9) To prevent damage to the seal (5), turn the pipe assembly (9) when you move or install it.
(10) Move the sleeve (14) in position on the packings (12).
(11) Make sure that the sleeve (14) makes an overlap on the flanges of the air-cycle machine outlet (11) and the pipe assembly (9).
(12) Put the half-clamps (10) in position and install the clamp (13).
(13) Do not fully tighten the clamp (13) at this time.
(14) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the mating surfaces of the retaining cables (3).
(15) Make sure that the pipe assembly (9) is correctly aligned with the sleeve (4) and the air-cycle machine outlet (11).
(16) Put the retaining cables (3) in position.
(17) Hold the hexagonal part of the retaining cables (3).
(18) Install the new AIPC 21-52-41-29-100 WASHER (2) and the new AIPC 21-52-41-29-090 NUT (1).
NOTE: The retaining cables (3) will twist if you do not hold the hexagonal part of the retaining cables (3).
(19) Hold the hexagonal part of the retaining cables (3).(20) TORQUE the nuts (1) to between 0.85 and 0.8 m.daN (75.22 and 70.80 lbf.in )
. NOTE: The retaining cables (3) will twist if you do not hold the hexagonal part of the retaining cables (3).
(21) Make sure that the cables (3) are not twisted. NOTE: This will give a safe and flexible connection.
(22) Remove the unwanted grease from the retaining cables (3).(23) Make sure that the half-clamps (10) and the clamp (13) are in their correct installation positions.
(24) TORQUE the clamp (13) to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )
. WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(25) Safety clamp (13) with NOTE: Installation of the lockwire is only necessary on the clamp(s) with a hole in the screw.
(26) Remove the CAP-BLANKING from each electrical connector and receptacle.CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
(27) Connect the electrical connector (6).(28) Make sure that the work area is clean and clear of tools and other items.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-52-23-710-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 10HM (PACK 1AIR CONDITIONING) | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/PACK TEMP/CTL SYS1/1/115VAC | 1HH | X22 |
| 122VU | AIR COND/PACK TEMP/CTL SYS1/1/28VDC | 3HH | X21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/1/28VDC | 4HH | Y19 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/1/115VAC | 2HH | Y18 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 11HM (PACK 2AIR CONDITIONING) | |||
| 122VU | AIR COND/PACK TEMP/CTL SYS1/2/115VAC | 21HH | W22 |
| 122VU | AIR COND/PACK TEMP/CTL SYS1/2/28VDC | 23HH | W21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/2/28VDC | 24HH | Y21 |
| 122VU | AIR COND/PACK TEMP CTL SYS2/2/115VAC | 22HH | Y20 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
D. 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 pipe assembly.
Make sure that there are no leaks.
(4) After approximately 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).
5. Close-up(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 pipe assembly.
NOTE: Minimum leakage is permitted. After the pack operates some minutes, the leakage of air will decrease because the seals have their correct operating temperature.
(3) Do a leak check of the sense line connections. Make sure that there are no leaks.
(4) After approximately 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 21-52-23-410-056-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (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 21-52-23-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel (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).