W DOC AIRBUS | AMM A320F

Installation of the Exhaust Gas Temperature (EGT) Sensor 3 [CFML]

TASK 77-21-10-400-804-A
Installation of the Exhaust Gas Temperature (EGT) Sensor 3

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: 400
FIN: 4012KS31
FIN: 4012KS32
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
WARNING NOTICE(S)
No specific
Torque wrench: range to between 17.9 and 16.2 lbf.in (0.20 and 0.18 m.daN ) T
No specific
Torque wrench: range to between 32.6 and 29.5 lbf.in (0.37 and 0.33 m.daN ) T
No specific
Torque wrench: range to between 75.0 and 67.5 lbf.in (0.85 and 0.76 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2101)
graphite grease
(Material No.CP8001)
lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)
lockwire 0.032 in. (0.8 mm) dia
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
45
GASKET
EIPC 77-21-10-03-025
45
GASKET
EIPC 77-21-10-03-030
 E. Referenced Information
REFERENCE
DESIGNATION
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 73-29-00-710-802-A
FADEC Test (Menu Mode)
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 Exhaust Gas Temperature (EGT) Sensor 3
3. Job Set-up
Subtask 77-21-10-941-072-A
A. 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 77-21-10-010-105-A
B. 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 77-21-10-040-084-A
C. Deactivation of the Thrust Reverser System for 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 maintenance (Ref. AMM TASK 78-30-00-040-809).
Subtask 77-21-10-010-106-A
D. 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
4. Procedure
Subtask 77-21-10-420-066-A
A. Installation of the Exhaust Gas Temperature (EGT) Sensor 3
   (1) Remove all the COVER - PROTECTION and CAP - PROTECTION from the openings, tubes, hoses and connectors.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
   (4) Make sure that the EGT sensor 3 (41) is serviceable.

PRE SB 72-0086

   (5) Install a new EIPC 77-21-10-03-030 GASKET (45) on the turbine center frame (4).

END OF PRE SB 72-0086


POST SB 72-0086

   (6) Install a new EIPC 77-21-10-03-025 GASKET (45) on the turbine center frame (4) with the spline on the frame side.

END OF POST SB 72-0086

   (7) Put the EGT sensor 3 (41) in position on the turbine center frame (4).
   (8) Apply graphite grease (Material No.CP2101) to the threads and friction surfaces of the two bolts (44).
   (9) Install the two bolts (44) that attach the EGT sensor 3 (41) to the turbine center frame (4).
   (10) TORQUE the two bolts (44) to between 75.0 and 67.5 lbf.in (0.85 and 0.76 m.daN ) T.
   (11) Installation of the lockwire
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.
     (a) Safety the two bolts (44) with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
   (12) Connect the large terminal tag of the EGT harness 2 lead (42) and the small terminal of the EGT harness 2 lead (43) to the EGT sensor 3 (41) as follows:
CAUTION: MAKE SURE THE EGT HARNESS LEADS ARE IN THE CORRECT POSITION BEFORE YOU TIGHTEN THE CAPTIVE NUTS. IF THE LEADS ARE NOT IN THE CORRECT POSITION, YOU CAN CAUSE DAMAGE TO THE EGT HARNESS LEADS AND THE EGT SENSOR.
CAUTION: DO NOT APPLY TOO MUCH TORQUE TO THE CAPTIVE NUTS. IF YOU APPLY TOO MUCH TORQUE TO THE CAPTIVE NUTS, YOU CAN CAUSE DAMAGE TO THE TERMINALS ON THE EGT SENSORS.
     (a) Connect the large terminal tag of the EGT harness 2 lead (42) to the EGT sensor 3 (41) large terminal.
     (b) Connect the small terminal tag of the EGT harness 2 lead (43) to the EGT sensor 3 (41) small terminal.
     (c) TORQUE the large terminal tag of the EGT harness 2 lead (42) to between 32.6 and 29.5 lbf.in (0.37 and 0.33 m.daN ) T.
     (d) TORQUE the small terminal tag of the EGT harness 2 lead (43) to between 17.9 and 16.2 lbf.in (0.20 and 0.18 m.daN ) T.
5. Close-up
Subtask 77-21-10-410-087-A
A. 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 77-21-10-440-068-A
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 77-21-10-410-088-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 WARNING NOTICE(S).
Subtask 77-21-10-710-071-A
D. Test requirements
   (1) Do a FADEC test (Menu mode) (Ref. AMM TASK 73-29-00-710-802).
[Rev.10 from 2021] 2026.04.02 06:37:53 UTC
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