DOC AIRBUS | AMM A320FInstallation of the Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-Transducer
TASK 36-11-49-400-836-A
Installation of the Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-Transducer
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 36-11-49-861-132-A
Subtask 36-11-49-420-157-A
Subtask 36-11-49-410-216-A
[Rev.10 from 2021]
2026.04.01 12:38:14 UTC
Installation of the Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-Transducer
WARNING:
MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING:
YOU MUST NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
BE VERY CAREFUL WHEN YOU DO WORK ON OR NEAR THE AIR-CONDITIONING DUCTS. THE DUCTS ARE MADE OF THIN MATERIAL AND YOU CAN EASILY BREAK THEM.
1. Reason for the JobNOTE: Two persons are necessary for this procedure.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06CMD9) | Silicone Adhesive Sealant-General Purpose One part legacy |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 410 | ENG 1 PYLON BOX AND FORWARD FAIRING |
| 420 | ENG 2 PYLON BOX AND FORWARD FAIRING |
| 191DB | |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 415AL, 415BL, 415BR, 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 425AL, 425BL, 425BR, 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-23-22-910-001-A | Marking of the Unions after Application of Standard or Specific Tightening Torque |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| 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 24-41-00-862-002-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 36-12-00-860-805-A | Pressurization of the Bleed System with the APU |
| TASK 36-12-00-860-806-A | Pressurization of the Bleed System through the HP Ground Connector |
| TASK 36-22-00-790-803-A | Leak Check on all the Bleed Air Ducts and the Pack Components |
| TASK 49-00-00-860-009-A | APU Shutdown by External Power (131-9(A)) |
| TASK 49-00-00-860-009-A-01 | APU Shutdown by Batteries (131-9(A)) |
| TASK 54-51-21-000-804-A | Removal of the Pylon Lateral Access-Doors |
| TASK 54-51-21-400-803-A | Installation of the Pylon Lateral Access-Doors |
| TASK 54-51-61-000-802-A | Removal of the Thermal Blankets between RIB1 and RIB5 |
| TASK 54-51-61-400-802-A | Installation of the Thermal Blankets between RIB1 and RIB5 |
| TASK 54-51-63-000-801-A | Removal of the Supports of the Engine Fire-Extinguisher Bottles |
| TASK 54-51-63-400-801-A | Installation of the Supports of the Engine Fire-Extinguisher Bottles |
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-809-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-809-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-36-00-010-806-A | Opening of the Thrust Reverser Cowl Doors |
| TASK 78-36-00-410-806-A | Closing of the Thrust Reverser Cowl Doors |
Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-TransducerSubtask 36-11-49-861-132-A
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
Subtask 36-11-49-941-151-A (Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
B. Safety Precautions
(1) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(2) On AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend on).
(b) Make sure that the APU BLEED pushbutton switch is released (ON legend off).
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
(3) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(5) On access door 191DB, on the HP ground connector:
(a) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.
Subtask 36-11-49-865-235-A (1) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(2) On AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend on).
(b) Make sure that the APU BLEED pushbutton switch is released (ON legend off).
(c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
(3) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:
- The ENG/MODE selector switch, and
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(5) On access door 191DB, on the HP ground connector:
(a) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 36-11-49-010-284-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
D. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
Subtask 36-11-49-040-174-A (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
E. Deactivation of the Thrust Reverser System for Ground Maintenance
Subtask 36-11-49-010-285-A WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Make sure that you did the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-809). F. Get Access
(1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(3) Make sure that these access panels are removed (Ref. AMM TASK 54-51-21-000-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
415AL 415BL 415BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
425AL 425BL 425BR
Subtask 36-11-49-020-165-A (1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(3) Make sure that these access panels are removed (Ref. AMM TASK 54-51-21-000-804):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
415AL 415BL 415BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
425AL 425BL 425BR
G. Removal of the Components
(1) Make sure that the engine fire-extinguishing bottle-supports are removed (Ref. AMM TASK 54-51-63-000-801).
(2) Make sure that the thermal blanket is removed (Ref. AMM TASK 54-51-61-000-802).
4. Procedure(1) Make sure that the engine fire-extinguishing bottle-supports are removed (Ref. AMM TASK 54-51-63-000-801).
(2) Make sure that the thermal blanket is removed (Ref. AMM TASK 54-51-61-000-802).
Subtask 36-11-49-420-157-A
A. Installation of the Sense Line of the Bleed Transferred Pressure-Transducer
(1) If you use the APU to energize the electrical circuits, stop the APU:
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.
(4) Clean the component interfaces and the adjacent area.
(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Remove the PLUG - BLANKING from the port of the bleed transferred pressure-transducer (4) and the indicating tube (16).
(7) Clean the mating surface of the fitting (20) (Ref. AMM TASK 20-28-00-912-802).
(8) Put the sense line (1) in the correct position between the bleed transferred pressure-transducer (4) and the pylon interface (11).
(9) Connect the sense line (1) with the union nut (3) to the bleed transferred pressure-transducer (4). Do not torque the union nut (3) at this time.
(10) If the sense line (2) is installed, install the two clamps (9) as follows:
(a) Make sure that the second parts of the clamps (9) are in the correct position on the supports (10).
(b) Install the first parts of the clamps (9) on the second parts of the clamps (9) with the sense line (1).
(c) Install the washers (8) and bolts (7). Do not tighten the bolts (7) at this time.
(11) Install the fitting (20) in the pylon interface (11) as follows:
(a) Install the washers (12) and bolts (14).
(b) Tighten the bolts (14).
(c) Do the electrical bonding of the fitting (20) (Ref. AMM TASK 20-28-00-912-802).
(d) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the bolt ends (14) and to the anchor nuts of the flanged-bulkhead union of the tube (1).
(e) Apply a bead of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) around the flanged-bulkhead union of the tube (1) at the pylon lower spar.
(12) Torque the union nut (3):
.
(13) Identify the torqued union nut (3) and the bleed transferred pressure-transducer (4) with a red line (Ref. AMM TASK 20-23-22-910-001).
(14) Tighten the bolts (7).
(15) Connect the coupling nut (18) of the indicating tube (16) to the sense line (1) as follows:
(b) Connect the coupling nut (18) of the indicating tube (16) to the sense line (1).
(c) Torque the coupling nut (18):
.
(d) Identify the torqued coupling nut (18) of the indicating tube (16) with a red line (Ref. AMM TASK 20-23-22-910-001).
Subtask 36-11-49-420-158-A (1) If you use the APU to energize the electrical circuits, stop the APU:
- For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
- For APS 3200 APU (Ref. AMM D/O 49-00-00-86)
- For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.
WARNING:
MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING:
DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
(3) Do an inspection of the component interfaces and the adjacent area.(4) Clean the component interfaces and the adjacent area.
(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Remove the PLUG - BLANKING from the port of the bleed transferred pressure-transducer (4) and the indicating tube (16).
(7) Clean the mating surface of the fitting (20) (Ref. AMM TASK 20-28-00-912-802).
(8) Put the sense line (1) in the correct position between the bleed transferred pressure-transducer (4) and the pylon interface (11).
(9) Connect the sense line (1) with the union nut (3) to the bleed transferred pressure-transducer (4). Do not torque the union nut (3) at this time.
(10) If the sense line (2) is installed, install the two clamps (9) as follows:
(a) Make sure that the second parts of the clamps (9) are in the correct position on the supports (10).
(b) Install the first parts of the clamps (9) on the second parts of the clamps (9) with the sense line (1).
(c) Install the washers (8) and bolts (7). Do not tighten the bolts (7) at this time.
(11) Install the fitting (20) in the pylon interface (11) as follows:
(a) Install the washers (12) and bolts (14).
(b) Tighten the bolts (14).
(c) Do the electrical bonding of the fitting (20) (Ref. AMM TASK 20-28-00-912-802).
(d) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the bolt ends (14) and to the anchor nuts of the flanged-bulkhead union of the tube (1).
(e) Apply a bead of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) around the flanged-bulkhead union of the tube (1) at the pylon lower spar.
(12) Torque the union nut (3):
WARNING:
TIGHTEN THE UNION(S) TO THE CORRECT TORQUE VALUE. IF YOU DO NOT TIGHTEN THEM SUFFICIENTLY, HOT AIR LEAKAGE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
CAUTION:
USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT THE PNEUMATIC LINES ON UNIONS.
(a) Use a second WRENCH - STANDARD to hold the bleed transferred pressure-transducer (4) and TORQUE the union nut (3) to between 0.85 and 0.73 m.daN (75.22 and 64.60 lbf.in ) . (13) Identify the torqued union nut (3) and the bleed transferred pressure-transducer (4) with a red line (Ref. AMM TASK 20-23-22-910-001).
(14) Tighten the bolts (7).
(15) Connect the coupling nut (18) of the indicating tube (16) to the sense line (1) as follows:
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the threads of the coupling nut (18) of the indicating tube (16). (b) Connect the coupling nut (18) of the indicating tube (16) to the sense line (1).
(c) Torque the coupling nut (18):
WARNING:
TIGHTEN THE UNION(S) TO THE CORRECT TORQUE VALUE. IF YOU DO NOT TIGHTEN THEM SUFFICIENTLY, HOT AIR LEAKAGE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
1 TORQUE the coupling nut (18) of the indicating tube (16) to the sense line (1) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft ) . (d) Identify the torqued coupling nut (18) of the indicating tube (16) with a red line (Ref. AMM TASK 20-23-22-910-001).
B. Installation of the Sense Line of the Bleed Regulated Pressure-Transducer
(1) Do an inspection of the component interfaces and the adjacent area.
(2) Clean the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Remove the PLUG - BLANKING from the port of the bleed regulated pressure-transducer (5) and the indicating tube (17).
(5) Clean the mating surface of the fitting (21) (Ref. AMM TASK 20-28-00-912-802).
(6) Put the sense line (2) in the correct position between the bleed transferred pressure-transducer (5) and the pylon interface (11).
(7) Connect the sense line (2) with the union nut (6) to the bleed transferred pressure-transducer (5). Do not torque the union nut (6) at this time.
(8) Install the two clamps (9).
(b) Install the first parts of the two clamps (9) on the second parts of the two clamps (9) with the sense line (1).
(c) Install the four washers (8) and bolts (7). Do not tighten the four bolts (7) at this time.
(9) Install the fitting (21) in the pylon interface (11).
(a) Install the two washers (13) and bolts (15).
(b) Tighten the two bolts (15).
(c) Do an electrical bonding of the fitting (21) (Ref. AMM TASK 20-28-00-912-802).
(d) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the bolt ends (15) and to the anchor nuts of the flanged-bulkhead union of the tube (2).
(e) Apply a bead of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) around the flanged-bulkhead union of the tube (2) at the pylon lower spar.
(10) Torque the union nut (6).
.
(b) Identify the torqued union nut (6) and the bleed regulated pressure-transducer (5) with a red line (Ref. AMM TASK 20-23-22-910-001).
(11) Tighten the four bolts (7).
(12) Connect the coupling nut (19) of the indicating tube (17) to the sense line (2).
(b) Connect the coupling nut (19) of the indicating tube (17) to the sense line (2).
(c) Torque the coupling nut (19).
.
2 Identify the torqued coupling nut (19) of the indicating tube (17) with a red line (Ref. AMM TASK 20-23-22-910-001).
Subtask 36-11-49-420-160-A (1) Do an inspection of the component interfaces and the adjacent area.
(2) Clean the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Remove the PLUG - BLANKING from the port of the bleed regulated pressure-transducer (5) and the indicating tube (17).
(5) Clean the mating surface of the fitting (21) (Ref. AMM TASK 20-28-00-912-802).
(6) Put the sense line (2) in the correct position between the bleed transferred pressure-transducer (5) and the pylon interface (11).
(7) Connect the sense line (2) with the union nut (6) to the bleed transferred pressure-transducer (5). Do not torque the union nut (6) at this time.
(8) Install the two clamps (9).
NOTE: If the sense line (1) is not installed, do not do these steps.
(a) Make sure that the second parts of the two clamps (9) are in the correct position on the two supports (10). (b) Install the first parts of the two clamps (9) on the second parts of the two clamps (9) with the sense line (1).
(c) Install the four washers (8) and bolts (7). Do not tighten the four bolts (7) at this time.
(9) Install the fitting (21) in the pylon interface (11).
(a) Install the two washers (13) and bolts (15).
(b) Tighten the two bolts (15).
(c) Do an electrical bonding of the fitting (21) (Ref. AMM TASK 20-28-00-912-802).
(d) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the bolt ends (15) and to the anchor nuts of the flanged-bulkhead union of the tube (2).
(e) Apply a bead of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) around the flanged-bulkhead union of the tube (2) at the pylon lower spar.
(10) Torque the union nut (6).
WARNING:
TIGHTEN THE UNION(S) TO THE CORRECT TORQUE VALUE. IF YOU DO NOT TIGHTEN THEM SUFFICIENTLY, HOT AIR LEAKAGE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
CAUTION:
USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT THE PNEUMATIC LINES ON UNIONS.
(a) Use a second WRENCH - STANDARD to hold the bleed regulated pressure-transducer (5) and TORQUE the union nut (6) to between 0.85 and 0.73 m.daN (75.22 and 64.60 lbf.in ) . (b) Identify the torqued union nut (6) and the bleed regulated pressure-transducer (5) with a red line (Ref. AMM TASK 20-23-22-910-001).
(11) Tighten the four bolts (7).
(12) Connect the coupling nut (19) of the indicating tube (17) to the sense line (2).
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the threads of the coupling nut (19) of the indicating tube (17). (b) Connect the coupling nut (19) of the indicating tube (17) to the sense line (2).
(c) Torque the coupling nut (19).
WARNING:
TIGHTEN THE UNION(S) TO THE CORRECT TORQUE VALUE. IF YOU DO NOT TIGHTEN THEM SUFFICIENTLY, HOT AIR LEAKAGE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
1 TORQUE the coupling nut (19) of the indicating tube (17) to the sense line (2) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft ) . 2 Identify the torqued coupling nut (19) of the indicating tube (17) with a red line (Ref. AMM TASK 20-23-22-910-001).
C. Installation of the Components
(1) Install the thermal blanket (Ref. AMM TASK 54-51-61-400-802).
(2) Install the supports-engine fire-extinguishing bottles (Ref. AMM TASK 54-51-63-400-801).
Subtask 36-11-49-865-236-A (1) Install the thermal blanket (Ref. AMM TASK 54-51-61-400-802).
(2) Install the supports-engine fire-extinguishing bottles (Ref. AMM TASK 54-51-63-400-801).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 36-11-49-480-094-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1) | |||
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2) | |||
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
E. Prepare for the Leak Test on the Connections of the Sense Lines (1) and/or (2).
(1) Use the soap solution procedure or the aluminum foil procedure (Ref. AMM TASK 36-22-00-790-803).
Subtask 36-11-49-790-065-A (1) Use the soap solution procedure or the aluminum foil procedure (Ref. AMM TASK 36-22-00-790-803).
F. Leak Test
(1) Pressurize the bleed system through the HP ground connector (Ref. AMM TASK 36-12-00-860-806) or with the APU (Ref. AMM TASK 36-12-00-860-805).
(a) Make sure that there are no leaks at the sense line connections (Ref. AMM TASK 36-22-00-790-803).
(2) Remove the materials that you used to do the leak test on the sense lines (1) and/or (2) connections.
5. Close-up(1) Pressurize the bleed system through the HP ground connector (Ref. AMM TASK 36-12-00-860-806) or with the APU (Ref. AMM TASK 36-12-00-860-805).
(a) Make sure that there are no leaks at the sense line connections (Ref. AMM TASK 36-22-00-790-803).
(2) Remove the materials that you used to do the leak test on the sense lines (1) and/or (2) connections.
Subtask 36-11-49-410-216-A
A. Close Access
(1) Put the aircraft back to its initial configuration.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install these access panels (Ref. AMM TASK 54-51-21-400-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
415AL 415BL 415BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
425AL 425BL 425BR
(4) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
Subtask 36-11-49-440-126-A (1) Put the aircraft back to its initial configuration.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install these access panels (Ref. AMM TASK 54-51-21-400-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
415AL 415BL 415BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
425AL 425BL 425BR
(4) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 36-11-49-410-217-A C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
Subtask 36-11-49-862-122-A (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
D. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).