W DOC AIRBUS | AMM A320F

Installation of the Pylon Overheat Sensing-Element

TASK 36-22-15-400-001-A
Installation of the Pylon Overheat Sensing-Element

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 413
ZONE: 424
FIN: 1HF1 ** ON A/C NOT FOR ALL
FIN: 1HF2 ** ON A/C NOT FOR ALL
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific
AR
CAP - BLANKING
No specific
AR
GUN - SPRAY
No specific
AR
NITROGEN 1.7 TO 2 BAR (25 TO 30 PSI)
No specific
AR
WARNING NOTICE(S)
FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
No specific
Torque wrench: range to between 0.69 and 0.58 m.daN (61.06 and 51.33 lbf.in ) T
FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
No specific
Torque wrench: range to between 0.69 and 0.58 m.daN (61.06 and 51.33 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BGB1)
Non Aqueous Cleaner-Sensing element - Xylene based -
FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
(Material No.14QDC1)
Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -
FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
(Material No.14QDC1)
Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
413
UPPER FWD PYLON
424
UPPER FWD PYLON
FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
413CL
413CR, 413DT, 471AL, 471AR
413DL, 414CR, 414FR
FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
423CL
423CR, 423DT, 481AL, 481AR
423DL, 423FL, 424CR
 D. Referenced Information
REFERENCE
DESIGNATION
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 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 36-22-00-710-001-A
Operational Test of the Overheat Detection System
F Pylon Overheat Sensing-Element ** ON A/C NOT FOR ALL
F Pylon Overheat Sensing-Element ** ON A/C NOT FOR ALL
F Pylon Overheat Sensing-Element ** ON A/C NOT FOR ALL
FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
TASK 54-52-11-000-002-A
Removal of the Access Panels
TASK 54-52-11-000-002-B
Removal of the Access Panels
TASK 54-52-11-400-002-A
Installation of the Access Panels
TASK 54-52-11-400-002-B
Installation of the Access Panels
TASK 54-53-11-000-002-A
Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B
Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-A
Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-B
Installation of the Pylon-to-Wing Access Panels
FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
TASK 54-52-11-000-002-A
Removal of the Access Panels
TASK 54-52-11-000-002-B
Removal of the Access Panels
TASK 54-52-11-400-002-A
Installation of the Access Panels
TASK 54-52-11-400-002-B
Installation of the Access Panels
TASK 54-53-11-000-002-A
Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B
Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-A
Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-B
Installation of the Pylon-to-Wing Access Panels
3. Job Set-up
Subtask 36-22-15-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
   (2) On ENG panel 115VU:
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to start the engine.
   (3) On AIR COND panel 30VU:
  • Make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend on)
  • Make sure that the APU BLEED pushbutton switch is released (ON legend off)
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
   (4) On the HP ground connector:
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.
   (5) On MAINTENANCE panel 50VU:
  • Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) is off.
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC system 1(2).
   (6) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position at the pylon access.
Subtask 36-22-15-860-050-B ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-42-00-861-001).
   (2) On ENG panel 115VU:
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to start the engine.
   (3) On AIR COND panel 30VU:
  • Make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend on)
  • Make sure that the APU BLEED pushbutton switch is released (ON legend off)
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
   (4) On the HP ground connector:
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.
   (5) On MAINTENANCE panel 50VU:
  • Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) is off.
  • Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize the FADEC system 1(2).
   (6) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position at the pylon access.
Subtask 36-22-15-865-051-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1HF1 (SNSG ELEMOVHT, ENG 1 PYLON)
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
FOR FIN: 1HF2 (SNSG ELEMOVHT, ENG 2 PYLON)
122VUAIR BLEED/ENG 2/CTL3HA2Z23
122VUAIR BLEED/ENG 2/MONG2HA2Z22
Subtask 36-22-15-010-065-A ** ON A/C NOT FOR ALL
C. Make sure that the applicable access panels are removed:
   (1) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
   (2) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
Subtask 36-22-15-010-065-C ** ON A/C NOT FOR ALL
C. Make sure that the applicable access panels are removed:
   (1) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
   (2) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
Subtask 36-22-15-010-065-E ** ON A/C NOT FOR ALL
C. Make sure that the applicable access panels are removed:
   (1) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
   (2) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
Subtask 36-22-15-110-051-A ** ON A/C NOT FOR ALL
D. Cleaning
   (1) Remove the blanking caps from the disconnected electrical connectors.
   (2) Apply the Non Aqueous Cleaner-Sensing element - Xylene based - (Material No.08BGB1) with a GUN - SPRAY:
  • On the end fittings of the sensing elements of the cable assemblies and of all other connectors
  • Into the receptacles of the connectors, where necessary to clean them.
NOTE: Do not use probes, swabs or any other instruments to examine the ends of the connectors when you clean them.
   (3) Rinse all parts of the sensing elements.
   (4) Dry the components.
WARNING: DO NOT EXCEED 30PSIG (2,1KG/CM2) OF PRESSURE AT THE NOZZLE WHEN USING COMPRESSED AIR OR NITROGEN IN THIS CLEANING PROCESS. ALSO WEAR STURDY GOGGLES OR A FACE SHIELD. PARTICLES OR LIQUID DROPLETS PROPELLED BY HIGH PRESURE CAN CAUSE PERMANENT EYE INJURY.
     (a) Dry all the components with a NITROGEN 1.7 TO 2 BAR (25 TO 30 PSI) at a pressure of not more than 30 psi (2.1 bar).
   (5) Install the CAP - BLANKING on the disconnected electrical connectors.
4. Procedure
Subtask 36-22-15-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Pylon Overheat Sensing-Element
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.
   (1) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
NOTE: It is necessary to change the routing of the preformed sensing element before its installation for FIN 1HF1.
     (a) Remove the CAP-BLANKING from each electrical connector and receptacle.
     (b) Install the four grommets (16) on the sensing element (12).
     (c) Install the sensing element (12) with the grommets (16) on the support (11).
       1 Make sure that the four clamps (14) are open.
     (d) Put the four grommets (16) in the correct position in the clamps (14).
     (e) Lock the clamps (14).
CAUTION: DO NOT USE ELECTRICAL OR PNEUMATIC TOOLS TO LOOSEN OR TIGHTEN THE QUARTER-TURN FASTENER ON THE FIRE DETECTOR CLAMP. ONLY USE A MANUAL SCREWDRIVER. ELECTRICAL OR PNEUMATIC TOOLS WILL CAUSE THE FASTENER TO TURN TOO MUCH AND POSSIBLY TO BREAK.
       1 Close the clamps (14) and lock them with the quarter-turn fasteners (15).
     (f) Install the nuts (3) and (7) on the sensing element (12) and tighten the nuts.
       1 Safety the nuts (3) and (7) with the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -.
     (g) Install the support (11) with the sensing element (12) in its housing on the bulkhead (13).
     (h) Install the washers (1), (6) and (10) and screws (2), (5) and (9).
       1 Tighten the three screws (2), (5) and (9).
     (i) Install the electrical connectors (4) and (8) on the sensing element (12).
       1 TORQUE the electrical connectors (4) and (8) to between 0.69 and 0.58 m.daN (61.06 and 51.33 lbf.in ) T.
       2 Safety the electrical connectors (4) and (8) with the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -.
   (2) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
     (a) Remove the CAP-BLANKING from each electrical connector and receptacle.
     (b) Install the four grommets (16) on the sensing element (17).
     (c) Install the sensing element (17) with the grommets (16) on the support (11).
       1 Make sure that the four clamps (14) are open.
     (d) Put the four grommets (16) in the correct position in the clamps (14).
     (e) Lock the clamps (14).
CAUTION: DO NOT USE ELECTRICAL OR PNEUMATIC TOOLS TO LOOSEN OR TIGHTEN THE QUARTER-TURN FASTENER ON THE FIRE DETECTOR CLAMP. ONLY USE A MANUAL SCREWDRIVER. ELECTRICAL OR PNEUMATIC TOOLS WILL CAUSE THE FASTENER TO TURN TOO MUCH AND POSSIBLY TO BREAK.
       1 Close the clamps (14) and lock them with the quarter-turn fasteners (15).
     (f) Install the nuts (3) and (7) on the sensing element (17) and tighten the nuts.
       1 Safety the nuts (3) and (7) with the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -.
     (g) Install the support (11) with the sensing element (17) in its housing on the bulkhead (13).
     (h) Install the washers (1), (6) and (10) and screws (2), (5) and (9).
       1 Tighten the three screws (2), (5) and (9).
     (i) Install the electrical connectors (4) and (8) on the sensing element (17).
       1 TORQUE the electrical connectors (4) and (8) to between 0.69 and 0.58 m.daN (61.06 and 51.33 lbf.in ) T.
       2 Safety the electrical connectors (4) and (8) with the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -.
Subtask 36-22-15-865-052-A ** ON A/C NOT FOR ALL
B. 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: 1HF1 (SNSG ELEMOVHT, ENG 1 PYLON)
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
FOR FIN: 1HF2 (SNSG ELEMOVHT, ENG 2 PYLON)
122VUAIR BLEED/ENG 2/CTL3HA2Z23
122VUAIR BLEED/ENG 2/MONG2HA2Z22
Subtask 36-22-15-710-050-A ** ON A/C NOT FOR ALL
C. Do the operational test of the overheat detection system (Ref. AMM TASK 36-22-00-710-001).
5. Close-up
Subtask 36-22-15-410-059-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the applicable access panels that follow:
     (a) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
     (b) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the access platform(s).
Subtask 36-22-15-410-059-C ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the applicable access panels that follow:
     (a) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
     (b) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the access platform(s).
Subtask 36-22-15-410-059-E ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the applicable access panels that follow:
     (a) FOR [1HF1] (SNSG ELEM-OVHT, ENG 1 PYLON)
     (b) FOR [1HF2] (SNSG ELEM-OVHT, ENG 2 PYLON)
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the access platform(s).
Subtask 36-22-15-862-050-A ** ON A/C NOT FOR ALL
B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:16:47 UTC
"Aviabrain" 2025