W DOC AIRBUS | AMM A320F

Installation of the Core Engine Fire Detection Elements

TASK 26-12-17-400-804-A
Installation of the Core Engine Fire Detection Elements

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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 450
ZONE: 460
FIN: 4001WD1
FIN: 4001WD2
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 30 and 25 lbf.in (0.34 and 0.28 m.daN ) T
No specific
Torque wrench: range to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) T
No specific
Torque wrench: range to between 55 and 50 lbf.in (0.62 and 0.57 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2442)
engine oil
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
450
ENG 1 THRUST REVERSER & EXHAUST SECTION
460
ENG 2 THRUST REVERSER & EXHAUST SECTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A
De-energize the Ground Service Network Supplied from the External Power
TASK 26-12-00-710-001-A
Operational Check of Loop/Squib
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
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
F Core Engine Fire Detection Elements
3. Job Set-up
Subtask 26-12-17-861-064-A
A. Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
Subtask 26-12-17-941-064-A
B. Safety Precautions
   (1) 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.
   (2) On the ENG section of maintenance panel 50VU:
     (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).
Subtask 26-12-17-865-076-A
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
Subtask 26-12-17-010-088-A
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 26-12-17-040-069-A
E. Deactivation of the Thrust Reverser System for Ground Maintenance
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 ground maintenance (Ref. AMM TASK 78-30-00-040-809).
Subtask 26-12-17-010-089-A
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 1M (3 FT)-ADJUSTABLE is in position.
4. Procedure
Subtask 26-12-17-420-065-A
A. Installation of the Core Engine Fire Detection Elements
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.
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) Removal of protection covers
CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
     (a) Remove all the COVER - PROTECTION and CAP - PROTECTION from the openings, tubes, hoses and connectors.
   (2) Lubricate the threads of the four bolts (27), the four bolts (33), the two bolts (62) and the two bolts (31) with engine oil (Material No.CP2442) .
   (3) Install the four bolts (27) to attach the responder (3) on the left side of the engine.
   (4) TORQUE the four bolts (27) to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) T.
   (5) Align the fireloop wire (4) along the route identified by the 25 clips.
   (6) Install the four bolts (33) to attach the responder (63) on the right side of the engine.
   (7) TORQUE the four bolts (33) to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) T.
   (8) One clip at a time, align the fireloop wires (4) in the grooves in the clip. Close the clip and turn the bolt one-half turn to lock the clip closed as follows:
     (a) Turn the bolt (35) to lock the clip (34) closed.
     (b) Turn the bolt (37) to lock the clip (36) closed.
     (c) Turn the bolt (39) to lock the clip (38) closed.
     (d) Turn the bolt (41) to lock the clip (40) closed.
     (e) Turn the bolt (43) to lock the clip (42) closed.
     (f) Turn the bolt (45) to lock the clip (44) closed.
     (g) Turn the bolt (60) to lock the clip (61) closed.
     (h) Turn the bolt (58) to lock the clip (59) closed.
     (i) Turn the bolt (56) to lock the clip (57) closed.
     (j) Turn the bolt (55) to lock the clip (54) closed.
     (k) Turn the bolt (53) to lock the clip (52) closed.
     (l) Turn the bolt (51) to lock the clip (50) closed.
     (m) Turn the bolt (49) to lock the clip (48) closed.
     (n) Turn the bolt (47) to lock the clip (46) closed.
     (o) Turn the bolt (9) to lock the clip (10) closed.
     (p) Turn the bolt (8) to lock the clip (7) closed.
     (q) Turn the bolt (11) to lock the clip (12) closed.
     (r) Turn the bolt (6) to lock the clip (5) closed.
     (s) Turn the bolt (13) to lock the clip (14) closed.
     (t) Turn the bolt (15) to lock the clip (16) closed.
     (u) Turn the bolt (17) to lock the clip (18) closed.
     (v) Turn the bolt (19) to lock the clip (20) closed.
     (w) Turn the bolt (21) to lock the clip (22) closed.
     (x) Turn the bolt (23) to lock the clip (24) closed.
     (y) Turn the bolt (25) to lock the clip (26) closed.
   (9) Install the two bolts (62) to attach the harness (30) leads to the responder (63).
   (10) TORQUE the two bolts (62) to between 55 and 50 lbf.in (0.62 and 0.57 m.daN ) T.
   (11) Install the bolt (31) to attach the bracket (32) to the harness (30).
   (12) TORQUE the bolt (31) to between 30 and 25 lbf.in (0.34 and 0.28 m.daN ) T.
   (13) Install the two bolts (2) to attach the harness (1) leads to the responder (3).
   (14) TORQUE the two bolts (2) to between 55 and 50 lbf.in (0.62 and 0.57 m.daN ) T.
   (15) Install the bolt (29) to attach the bracket (28) to the harness (1).
   (16) TORQUE the bolt (29) to between 30 and 25 lbf.in (0.34 and 0.28 m.daN ) T.
Subtask 26-12-17-865-077-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
Subtask 26-12-17-860-076-A
C. Do the EIS start procedure (Upper ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
Subtask 26-12-17-710-059-A
D. Do this test:
   (1) On the upper ECAM DU, make sure that the FIRE ENG1(2) LOOP A (B) FAULT message is out of view.
   (2) Do an operational test of the engine fire detection system (Ref. AMM TASK 26-12-00-710-001).
5. Close-up
Subtask 26-12-17-860-077-A
A. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
Subtask 26-12-17-410-067-A
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) 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 26-12-17-440-056-A
C. Do the reactivation of the thrust reverser after ground maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 26-12-17-410-068-A
D. 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 WARNING NOTICE(S).
Remove the access platform(s).
Subtask 26-12-17-862-060-A
E. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.04.01 06:38:00 UTC
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