DOC AIRBUS | AMM A320FInstallation of the Core EGT Harness [IAE]
TASK 77-21-43-400-804-B
Installation of the Core EGT Harness
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 77-21-43-941-056-A ** ON A/C NOT FOR ALL
Subtask 77-21-43-010-065-A ** ON A/C NOT FOR ALL
Subtask 77-21-43-410-056-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:10:37 UTC
Installation of the Core EGT Harness
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.
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V10-077) | lubricant (engine oil) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 71-00-00-710-012-B | Test No.3 : Idle Leak Check |
| TASK 71-13-00-010-010-A | Opening of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-410-010-A | Closing of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 73-22-00-710-040-A | Operational Test of the FADEC SYSTEM on the Ground |
| TASK 77-21-43-000-804-B | Removal of the Core EGT Harness |
| TASK 77-21-43-400-010-B | Installation of the Exhaust Gas Temperature (EGT) Harness and Junction Box (PRE SB 77-0015 and POST SB 77-0015) |
| TASK 78-30-00-040-012-A | Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance |
| TASK 78-30-00-440-012-A | Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance |
| TASK 78-32-00-010-010-A | Opening of the Thrust Reverser Halves |
| TASK 78-32-00-410-010-A | Closing of the Thrust Reverser Halves |
| TASK 70-71-01-00-13 | GENERAL - POWER PLANT - DESCRIPTION AND OPERATION |
Core EGT HarnessSubtask 77-21-43-941-056-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 77-21-43-010-064-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-32-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 77-21-43-040-058-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-32-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated. (Ref. AMM TASK 78-30-00-040-012)
4. ProcedureSubtask 77-21-43-010-065-A ** ON A/C NOT FOR ALL
A. Installation of the Core EGT Harness
V10-077 lubricant (engine oil)
(2) Install the four screws (95) and the four nuts (96) that attach the electrical receptacle 4007VC to the bracket (94) on flange FJ at position V.
SBE 79-0088
(3) Install the four screws (95) and the four nuts (96) that attach the electrical receptacle 4007VC to the bracket (94) at position V.
END OF SBE 79-0088
(4) TORQUE the four nuts (96) to between 8 and 6 lbf.in (0.09 and 0.07 m.daN )
.
(5) Connect the electrical connector 4007VC-A to the electrical receptacle 4007VC.
(6) Install the spacer (92) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (89), the washer (90), the spacer (92) and the nut (93) that attach the clip (91) to the lug on the tube 1 at position U.
(7) Install the spacer (86) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (83), the washer (84), the spacer (86) and the nut (88) that attach the clips (85) and (87) to the lug on the tube 7 at position T.
(8) Install the bolt (79), the washer (80) and the nut (82) that attach the clip (81) to the lug on the tube 1 at position S.
(9) Install the bolt (75), the washer (76) and the nut (78) that attach the clip (77) to the lug on the tube 7 at position R.
(10) Make sure the clip nut (74) is installed to mounting bracket (73).
(11) Install the spacer (69) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (66), the washer (67) and the spacer (69) that attach the clip (68), (70) and (71) to the mounting brackets (72) and (73) at position Q.
(12) Install the bolt (62), the washer (63) and the nut (65) that attach the clip (64) to the lug on the tube 1 at position P.
SBE 72-0189
PRE SBE 79-0088
(13) Install the spacer (58) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (56), the spacer (58) and the nut (60) that attach the clips (57) and (59) to the lug on the tube 5 at position N.
END OF SBE 72-0189
END OF PRE SBE 79-0088
SBE 79-0088
(14) Install the spacer (58) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (56), the spacer (58), the washer (61) and the nut (60) that attach the clip (59) to the lug on the tube 5 at position N.
END OF SBE 79-0088
PRE SBE 72-0189
(15) Install the bolt (51), the washer (52) and the nut (54) that attach the clip (53) to the lug on the tube 5 at position L.
END OF PRE SBE 72-0189
SBE 72-0189
PRE SBE 79-0088
(16) Make sure the clip nut (55) is installed to the lug on the tube 5.
(17) Install the bolt (51) that attach the clip (53) to the lug on the tube 5 at position M.
END OF SBE 72-0189
END OF PRE SBE 79-0088
SBE 79-0088
(18) Make sure the clip nut (55) is installed to the lug on the tube 5.
(19) Install the bolt (51) and the washer (97) that attach the clip (53) to the lug on the tube 5 at position M.
END OF SBE 79-0088
PRE SBE 72-0189
(20) Make sure the clip nut (49) is installed to bracket (48).
(21) Install the bolt (45) and the washer (46) that attach the clip (47) to the bracket (48) at position K.
END OF PRE SBE 72-0189
SBE 72-0189
(22) Make sure the clip nut (49) is installed to bracket (48).
(23) Install the spacer (50) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (45) and the spacer (50) that attach the clip (47) to the bracket (48) at position K.
END OF SBE 72-0189
(24) Make sure the clip nut (44) is installed to bracket (43).
(25) Install the bolt (40) and the washer (41) that attach the clip (42) to the bracket (43) at position J.
(26) Install the bolt (36), the washer (37), and the nut (39) that attach the clip (38) to the lug on the tube 4 at position H.
PRE SBE 79-0098
SBE 79-0098
(27) Make sure the clip nut (35) is installed to bracket (34).
(28) Install the spacer (32) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (29), the washer (30) and the spacer (32) that attach the clips (31) and (33) to the bracket (34) at position G.
END OF PRE SBE 79-0098
END OF SBE 79-0098
PRE SBE 75-0049
(29) Install the bolt (22), the washers (23) and (26), and the nut (27) that attach the clips (24) and (25) to the lug on the tube 4 at position F.
END OF PRE SBE 75-0049
SBE 75-0049
PRE SBE 79-0098
SBE 79-0098
(30) Install the spacer (28) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (22), the spacer (28) and the nut (27) that attach the clips (24) and (25) to the lug on the tube 4 at position F.
END OF SBE 75-0049
END OF PRE SBE 79-0098
END OF SBE 79-0098
(31) Install the spacer (20) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (17), the washer (18), the spacer (20) and the nut (21) that attach the clip (19) to the lug on the tube 3 at position E.
(32) Install the spacers (13) and (15) at the positions noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (10), the washer (11), the two spacers (13) and (15) and the nut (16) that attach the clips (12) and (14) to the lug on the tube 3 at position D.
(33) Install the spacer (8) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (5), the washer (6) the spacer (8) and the nut (9) that attach the clip (7) to the lug on the tube 2 at position C.
(34) Install the bolt (1), the washer (2) and the nut (4) that attach the clip (3) to the lug on the tube 1 at position B.
(35) TORQUE the nuts (4), (9), (16), (21), (27), (39), (54), (60), (65), (78), (82), (88), (93) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(36) TORQUE the bolts (29), (40), (45), (51) and (66) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
(37) Connect the core EGT harness to the thermocouple junction box (Ref. AMM TASK 77-21-43-400-010).
Subtask 77-21-43-790-052-A ** ON A/C NOT FOR ALL NOTE: For more information about the minimum clearance allowed, refer to (Ref. AMM D/O 70-71-01-00).
(1) Apply (2) Install the four screws (95) and the four nuts (96) that attach the electrical receptacle 4007VC to the bracket (94) on flange FJ at position V.
SBE 79-0088
(3) Install the four screws (95) and the four nuts (96) that attach the electrical receptacle 4007VC to the bracket (94) at position V.
END OF SBE 79-0088
(4) TORQUE the four nuts (96) to between 8 and 6 lbf.in (0.09 and 0.07 m.daN )
. (5) Connect the electrical connector 4007VC-A to the electrical receptacle 4007VC.
(6) Install the spacer (92) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (89), the washer (90), the spacer (92) and the nut (93) that attach the clip (91) to the lug on the tube 1 at position U.
(7) Install the spacer (86) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (83), the washer (84), the spacer (86) and the nut (88) that attach the clips (85) and (87) to the lug on the tube 7 at position T.
(8) Install the bolt (79), the washer (80) and the nut (82) that attach the clip (81) to the lug on the tube 1 at position S.
(9) Install the bolt (75), the washer (76) and the nut (78) that attach the clip (77) to the lug on the tube 7 at position R.
(10) Make sure the clip nut (74) is installed to mounting bracket (73).
(11) Install the spacer (69) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (66), the washer (67) and the spacer (69) that attach the clip (68), (70) and (71) to the mounting brackets (72) and (73) at position Q.
(12) Install the bolt (62), the washer (63) and the nut (65) that attach the clip (64) to the lug on the tube 1 at position P.
SBE 72-0189
PRE SBE 79-0088
(13) Install the spacer (58) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (56), the spacer (58) and the nut (60) that attach the clips (57) and (59) to the lug on the tube 5 at position N.
END OF SBE 72-0189
END OF PRE SBE 79-0088
SBE 79-0088
(14) Install the spacer (58) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (56), the spacer (58), the washer (61) and the nut (60) that attach the clip (59) to the lug on the tube 5 at position N.
END OF SBE 79-0088
PRE SBE 72-0189
(15) Install the bolt (51), the washer (52) and the nut (54) that attach the clip (53) to the lug on the tube 5 at position L.
END OF PRE SBE 72-0189
SBE 72-0189
PRE SBE 79-0088
(16) Make sure the clip nut (55) is installed to the lug on the tube 5.
(17) Install the bolt (51) that attach the clip (53) to the lug on the tube 5 at position M.
END OF SBE 72-0189
END OF PRE SBE 79-0088
SBE 79-0088
(18) Make sure the clip nut (55) is installed to the lug on the tube 5.
(19) Install the bolt (51) and the washer (97) that attach the clip (53) to the lug on the tube 5 at position M.
END OF SBE 79-0088
PRE SBE 72-0189
(20) Make sure the clip nut (49) is installed to bracket (48).
(21) Install the bolt (45) and the washer (46) that attach the clip (47) to the bracket (48) at position K.
END OF PRE SBE 72-0189
SBE 72-0189
(22) Make sure the clip nut (49) is installed to bracket (48).
(23) Install the spacer (50) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (45) and the spacer (50) that attach the clip (47) to the bracket (48) at position K.
END OF SBE 72-0189
(24) Make sure the clip nut (44) is installed to bracket (43).
(25) Install the bolt (40) and the washer (41) that attach the clip (42) to the bracket (43) at position J.
(26) Install the bolt (36), the washer (37), and the nut (39) that attach the clip (38) to the lug on the tube 4 at position H.
PRE SBE 79-0098
SBE 79-0098
(27) Make sure the clip nut (35) is installed to bracket (34).
(28) Install the spacer (32) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (29), the washer (30) and the spacer (32) that attach the clips (31) and (33) to the bracket (34) at position G.
END OF PRE SBE 79-0098
END OF SBE 79-0098
PRE SBE 75-0049
(29) Install the bolt (22), the washers (23) and (26), and the nut (27) that attach the clips (24) and (25) to the lug on the tube 4 at position F.
END OF PRE SBE 75-0049
SBE 75-0049
PRE SBE 79-0098
SBE 79-0098
(30) Install the spacer (28) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (22), the spacer (28) and the nut (27) that attach the clips (24) and (25) to the lug on the tube 4 at position F.
END OF SBE 75-0049
END OF PRE SBE 79-0098
END OF SBE 79-0098
(31) Install the spacer (20) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (17), the washer (18), the spacer (20) and the nut (21) that attach the clip (19) to the lug on the tube 3 at position E.
(32) Install the spacers (13) and (15) at the positions noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (10), the washer (11), the two spacers (13) and (15) and the nut (16) that attach the clips (12) and (14) to the lug on the tube 3 at position D.
(33) Install the spacer (8) at the position noted during removal (Ref. AMM TASK 77-21-43-000-804). Install the bolt (5), the washer (6) the spacer (8) and the nut (9) that attach the clip (7) to the lug on the tube 2 at position C.
(34) Install the bolt (1), the washer (2) and the nut (4) that attach the clip (3) to the lug on the tube 1 at position B.
(35) TORQUE the nuts (4), (9), (16), (21), (27), (39), (54), (60), (65), (78), (82), (88), (93) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (36) TORQUE the bolts (29), (40), (45), (51) and (66) to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (37) Connect the core EGT harness to the thermocouple junction box (Ref. AMM TASK 77-21-43-400-010).
B. Test Requirements
(1) Do an operational test of the FADEC (Ref. AMM TASK 73-22-00-710-040) and check on CFDS if no fault is present concerning core EGT harness.
(2) Do an idle leak check (Ref. AMM TASK 71-00-00-710-012).
(3) On the upper ECAM DU, check that the EGT indication is available.
5. Close-up(1) Do an operational test of the FADEC (Ref. AMM TASK 73-22-00-710-040) and check on CFDS if no fault is present concerning core EGT harness.
(2) Do an idle leak check (Ref. AMM TASK 71-00-00-710-012).
(3) On the upper ECAM DU, check that the EGT indication is available.
Subtask 77-21-43-410-056-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) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.
Subtask 77-21-43-440-053-A ** ON A/C NOT FOR ALL Subtask 77-21-43-410-060-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.