W DOC AIRBUS | AMM A320F

Removal of the Fire Detection (System A), Cabin Services and Nacelle Temperature Harness [IAE]


TASK 71-52-41-000-010-B
Removal of the Fire Detection (System A), Cabin Services and Nacelle Temperature 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.
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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 2M (6 FT) - ADJUSTABLE
No specific
AR
COVER - BLANKING
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 71-13-00-010-010-A
Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A
Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-00-010-010-A
Opening of the Thrust Reverser Halves
3. Job Set-up
Subtask 71-52-41-941-051-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 71-52-41-010-052-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
     (a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
     (b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
   (2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position on the left side of the engine.
Subtask 71-52-41-040-053-A ** ON A/C NOT FOR ALL
C. Deactivate the thrust reverser.
WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012).
Subtask 71-52-41-010-055-A ** ON A/C NOT FOR ALL
D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
   (1) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
   (2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.
4. Procedure
Subtask 71-52-41-020-057-A ** ON A/C NOT FOR ALL
A. Disconnect the harness
   (1) Disconnect these electrical connectors:
     (a) Connectors 452VC-A and 450VC-A at the pylon interface panel.
     (b) Connector 4000HA-A at the high pressure bleed valve.
     (c) Connector 4001HA-A at the bleed pressure regulator valve.
     (d) Connector 4008KS-A at the nacelle temperature sensor.
     (e) Connector 4001WD1-A and 4001WD2-A at the fire detector.
Subtask 71-52-41-620-051-A ** ON A/C NOT FOR ALL
B. Put COVER - BLANKING on all the electrical connectors and the electrical receptacles.
Subtask 71-52-41-020-052-A ** ON A/C NOT FOR ALL
C. Remove the harness.

Pre SBE 72-0189
   (1) Remove the bolt (1), the washer (2) and the nut (4) that attach the harness clip (3) to the engine (Ref. detail A).
   (2) Remove the bolt (6), the washer (5) and the nut (8) that attach the harness clip (7) to the engine (Ref. detail B).
   (3) Remove the bolt (21), the washer (20) and the nut (22) that attach the harness clip (19) to the engine (Ref. detail C).
   (4) Make a note of the position of the spacer (27). Remove the bolt (24), the washer (23), the spacer (27) and the nut (26) that attach the harness clip (25) to the engine (Ref. detail D).
   (5) Make a note of the position of the spacers (30) and (31). Remove the bolt (33), the washer (32), the spacers (30) and (31) and the nut (29) that attach the harness clip (28) to the engine (Ref. detail E).
   (6) Make a note of the position of the spacers (46) and (48). Remove the bolt (49), the washer (44), the spacers (46) and (48) and the nut (47) that attach the harness clip (45) to the engine (Ref. detail F).
   (7) Make a note of the position of the spacer (51). Remove the bolt (53), the washer (54), the spacer (51) and the nut (50) that attach the harness clip (52) to the engine (Ref. detail G).
   (8) Remove the bolts (55) and the washers (56) from the ground points.
   (9) Remove the bolt (68), the washer (67) and the nut (70) that attach the harness clip (69) to the engine (Ref. detail H).
   (10) Make a note of the position of the spacers (73) and (75). Remove the bolt (76), the washer (71), the spacers (73) and (75) and the nut (74) that attach the harness clip (72) to the engine (Ref. detail J).
   (11) Remove the bolts (89) and (92), the washers (90) and (93) and the nuts (87) and (94) that attach the harness clips (88) and (91) to the engine (Ref. detail K and L).
   (12) Remove the bolt (98), the washer (97) and the nut (96) that attach the harness clips (95) and (99) to the engine (Ref. detail M).
   (13) Remove the bolt (111), the washer (110) and the nut (113) that attach the harness clip (112) to the engine (Ref. detail N).
   (14) Remove the bolts (117) and (118), the washers (116) and (121) and the nuts (115) and (120) that attach the harness clips (114) and (119) to the engine (Ref. detail P and Q).
   (15) Make a note of the position of the spacer (135). Remove the bolt (133), the washer (132), the spacer (135) and the nut (136) that attach the harness clip (134) to the engine (Ref. detail R).
   (16) Make a note of the position of the spacer (141). Remove the bolt (138), the washer (137), the spacer (141) and the nut (140) that attach the harness clip (139) to the engine (Ref. detail S).
   (17) Remove the bolt (145), the washer (144) and the nut (143) that attach the harness clip (142) to the engine (Ref. detail T).
   (18) Remove the bolts (159) and (160) and the washers (158) and (161) that attach the harness clips (156) and (157) to the engine bracket (Ref. detail at U)
   (19) Remove the bolts (165) and (169), the washers (164) and (168), the spacer (170) and the nuts (162) and (166) that attach the harness clips (163) and (167) to the engine (Ref. detail V and W).
   (20) Remove the fire detection (system A), cabin services and nacelle temperature harness from the engine.
Subtask 71-52-41-020-059-A ** ON A/C NOT FOR ALL
D. Remove the harness.

SBE 72-0189
Pre SBE 75-0081
   (1) Remove the bolt (1), the washer (2) and the nut (4) that attach the harness clip (3) to the engine (Ref. detail A).
   (2) Make a note of the position of the spacer (13). Remove the bolt (10), the washer (9), the spacer (13) and the nut (12) that attach the harness clip (11) to the engine (Ref. detail B).
   (3) Make a note of the position of the spacer (37). Remove the bolt (35), the washer (36), the spacer (37) and the nut (38) that attach the harness clip (34) to the engine (Ref. detail C).
   (4) Make a note of the position of the spacer (27). Remove the bolt (24), the washer (23), the spacer (27) and the nut (26) that attach the harness clip (25) to the engine (Ref. detail D).
   (5) Make a note of the position of the spacers (41) and (42). Remove the bolt (44), the washer (43), the spacers (41) and (42) and the nut (40) that attach the harness clip (39) to the engine (Ref. detail E).
   (6) Make a note of the position of the spacers (59) and (61). Remove the bolt (62), the washer (57), the spacers (59) and (61) and the nut (60) that attach the harness clip (58) to the engine (Ref. detail F).
   (7) Make a note of the position of the spacer (51). Remove the bolt (53), the washer (54), the spacer (51) and the nut (50) that attach the harness clip (52) to the engine (Ref. detail G).
   (8) Remove the bolts (55) and the washers (56) from the ground points.
   (9) Remove the bolt (77) and the nut (78) that attach the harness clip (79) to the engine (Ref. detail H).
   (10) Make a note of the position of the spacers (73) and (75). Remove the bolt (76), the washer (71), the spacers (73) and (75) and the nut (74) that attach the harness clip (72) to the engine (Ref. detail J).
   (11) Remove the bolts (100) and (102) that attach the harness clips (101) and (103) to the engine (Ref. detail K and L).
   (12) Make a note of the position of the spacers (105) and (107). Remove the bolt (108), the nut (106) and the spacers (105) and (107) that attach the harness clip (104) to the engine (Ref. detail M).
   (13) Remove the bolt (170) that attaches the harness clip (171) to the engine (Ref. detail X).
   (14) Make a note of the position of the spacers (173) and (174). Remove the bolt (172), the spacers (173) and (174) and the nut (176) that attach the harness clip (175) to the engine (Ref. detail Y).
   (15) Make a note of the position of the spacer (125). Remove the bolt (122), the spacer (125) and the nut (124) that attach the harness clip (123) to the engine (Ref. detail N).
   (16) Remove the bolt (126) and the nut (127) that attach the harness clip (128) to the engine (Ref. detail P).
   (17) Remove the bolt (239) and the nut (237) that attach the harness clip (238) to the engine (Ref. detail R).
   (18) Remove the bolt (146) and the nut (148) that attach the harness clip (147) to the engine (Ref. detail S)
   (19) Remove the bolt (179) and the nut (177) that attach the harness clip (178) to the engine (Ref. detail Z).
   (20) Remove the bolt (182) and the nut (180) that attach the harness clip (181) to the engine (Ref. detail AA).
   (21) Remove the bolt (184) and the nut (185) that attach the harness clip (183) to the engine (Ref. detail AB).
   (22) Make a note of the position of the spacer (186). Remove the bolt (187), the spacer (186) and the nut (189) that attach the harness clip (188) to the engine (Ref. detail AC).
   (23) Make a note of the position of the spacer (193). Remove the bolt (192), the spacer (193) and the nut (190) that attach the harness clip (191) to the engine (Ref. detail AD).
   (24) Make a note of the positions of the spacers (194), (197) and (198). Remove the bolt (199), the spacers (194), (197) and (198) and the nut (196) that attach the harness clip (195) to the engine (Ref. detail AE).
   (25) Make a note of the position of the spacers (200) and (201). Remove the bolt (202), the washer (203), the spacers (200) and (201) and the nut (204) that attach the harness clip (205) to the engine (Ref. detail AF).
   (26) Remove the bolt (209), the washer (208) and the nut (206) that attach the harness clip (207) to the engine (Ref. detail AG).
   (27) Remove the fire detection (system A), cabin services and nacelle temperature harness from the engine.
Subtask 71-52-41-020-060-A ** ON A/C NOT FOR ALL
E. Remove the harness.

SBE 72-0189
SBE 75-0081
PRE SBE 79-0088
PRE SBE 71-0273
   (1) Remove the bolt (211), the washer (212) and the nut (214) that attach the harness clips (210) and (213) to the engine (Ref. detail A).
   (2) Make a note of the position of the spacer (13). Remove the bolt (10), the washer (9), the spacer (13) and the nut (12) that attach the harness clip (11) to the engine (Ref. detail B).
   (3) Make a note of the postion of the spacer (37). Remove the bolt (35), the washer (36), the spacer (37) and the nut (38) that attach the harness clip (34) to the engine (Ref. detail C).
   (4) Make a note of the position of the spacer (27). Remove the bolt (24), the washer (23), the spacer (27) and the nut (26) that attach the harness clip (25) to the engine (Ref. detail D).
   (5) Make a note of the position of the spacers (41) and (42). Remove the bolt (44), the washer (43), the spacers (41) and (42) and the nut (40) that attach the harness clip (39) to the engine (Ref. detail E).
   (6) Make a note of the position of the spacers (59) and (61). Remove the bolt (62), the washer (57), the spacers (59) and (61) and the nut (60) that attach the harness clip (58) to the engine (Ref. detail F).
   (7) Make a note of the position of the spacer (51). Remove the bolt (53), the washer (54), the spacer (51) and the nut (50) that attach the harness clip (52) to the engine (Ref. detail G).
   (8) Remove the bolts (55) and the washers (56) from the ground points.
   (9) Remove the bolt (77) and the nut (78) that attach the harness clip (79) to the engine (Ref. detail H).
   (10) Make a note of the position of the spacers (232) and (234). Remove the bolt (231), the washer (236), the spacers (232) and (234) and the nut (233) that attach the harness clip (235) to the engine (Ref. detail J).
   (11) Remove the bolt (215), the washer (216) and the nut (218) that attach the harness clip (217) to the engine (Ref. detail AH).
   (12) Make a note of the position of the spacers (222) and (223). Remove the bolt (219), the washer (224), the nut (221) and the spacers (222) and (223) that attach the harness clip (220) to the engine (Ref. detail AJ).
   (13) Make a note of the position of the spacers (227) and (228). Remove the bolt (225), the washer (230), the nut (226) and the spacers (227) and (228) that attach the harness clip (229) to the engine (Ref. detail L).
   (14) Make a note of the position of the spacers (105) and (107). Remove the bolt (108), the nut (106) and the spacers (105) and (107) that attach the harness clip (104) to the engine (Ref. detail M).
   (15) Remove the bolt (170) that attaches the harness clip (171) to the engine (Ref. detail X).
   (16) Make a note of the position of the spacers (173) and (174). Remove the bolt (172), the spacers (173) and (174) and the nut (176) that attach the harness clip (175) to the engine (Ref. detail Y).
   (17) Make a note of the position of the spacer (125). Remove the bolt (122), the spacer (125) and the nut (124) that attach the harness clip (123) to the engine (Ref. detail N).
   (18) Remove the bolt (126) and the nut (127) that attach the harness clip (128) to the engine (Ref. detail P).
   (19) Remove the bolt (239) and the nut (237) that attach the harness clip (238) to the engine (Ref. detail R).
   (20) Remove the bolt (146) and the nut (148) that attach the harness clip (147) to the engine (Ref. detail S).
   (21) Remove the bolt (179) and the nut (177) that attach the harness clip (178) to the engine (Ref. detail Z).
   (22) Remove the bolt (182) and the nut (180) that attach the harness clip (181) to the engine (Ref. detail AA).
   (23) Remove the bolt (184) and the nut (185) that attach the harness clip (183) to the engine (Ref. detail AB).
   (24) Make a note of the position of the spacer (186). Remove the bolt (187), the spacer (186) and the nut (189) that attach the harness clip (188) to the engine (Ref. detail AC).
   (25) Make a note of the position of the spacer (193). Remove the bolt (192), the spacer (193) and the nut (190) that attach the harness clip (191) to the engine (Ref. detail AD).
   (26) Make a note of the positions of the spacers (194), (197) and (198). Remove the bolt (199), the spacers (194), (197) and (198) and the nut (196) that attach the harness clip (195) to the engine (Ref. detail AE).
   (27) Make a note of the position of the spacers (200) and (201). Remove the bolt (202), the washer (203), the spacers (200) and (201) and the nut (204) that attach the harness clip (205) to the engine (Ref. detail AF).
   (28) Remove the bolt (209), the washer (208) and the nut (206) that attach the harness clip (207) to the engine (Ref. detail AG).
   (29) Remove the fire detection (system A), cabin services and nacelle temperature harness from the engine.
Subtask 71-52-41-020-062-A ** ON A/C NOT FOR ALL
F. Remove the harness.
SBE 72-0189
SBE 75-0081
SBE 79-0088
SBN 71-0273
   (1) Remove the bolt (211), the washer (212) and the nut (214) that attach the harness clips (210) and (213) to the engine (Ref. detail A).
   (2) Make a note of the position of the spacer (13). Remove the bolt (10), the washer (9), the spacer (13), and the nut (12) that attach the harness clip (11) to the engine (Ref. detail B).
   (3) Make a note of the position of the spacer (37). Remove the bolt (35), the washer (36), the spacer (37) and the nut (38) that attach the harness clip (34) to the engine (Ref. detail C).
   (4) Make a note of the position of the spacer (27). Remove the bolt (24), the washer (23), the spacer (27) and the nut (26) that attach the harness clip (25) to the engine (Ref. detail D).
   (5) Make a note of the position of the spacers (41) and (42). Remove the bolt (44), the washer (43), the spacers (41) and (42) and the nut (40) that attach the harness clip (39) to the engine (Ref. detail E).
   (6) Make a note of the position of the spacers (59) and (61). Remove the bolt (62), the washer (57), the spacers (59) and (61) and the nut (60) that attach the harness clip (58) to the engine (Ref. detail F).
   (7) Make a note of the position of the spacer (51). Remove the bolt (53), the washer (54), the spacer (51) and the nut (50) that attach the harness clip (52) to the engine (Ref. detail G).
   (8) Remove the bolts (55) and the washers (56) from the ground points.
   (9) Remove the bolt (77) and the nut (78) that attach the harness clip (79) to the engine (Ref. detail H).
   (10) Make a note of the position of the spacers (232) and (234). Remove the bolt (231), the washer (236), the spacers (232) and (234) and the nut (233) that attach the harness clip (235) to the engine (Ref. detail J).
   (11) Remove the bolt (215), the washer (216) and the nut (218) that attach the harness clip (217) to the engine (Ref. detail AH).
   (12) Make a note of the position of the spacers (222) and (223). Remove the bolt (219), the washer (224), the nut (221) and the spacers (222) and (223) that attach the harness clip (220) to the engine (Ref. detail AJ).
   (13) Make a note of the position of the spacers (227) and (228). Remove the bolt (225), the washer (230), the nut (226) and the spacers (227) and (228) that attach the harness clip (229) to the engine (Ref. detail L).
   (14) Make a note of the position of the spacers (302) and (303). Remove the bolt (301), the nut (300) and the spacers (301) and (302) that attach the harness clip (304) to the tube (308) (Ref. detail AR).
   (15) Make a note of the position of the spacers (173) and (174). Remove the bolt (172), the spacers (173) and (174) and the nut (176) that attach the harness clip (175) to the engine (Ref. detail Y).
   (16) Make a note of the position of the spacer (125). Remove the bolt (122), the spacer (125) and the nut (124) that attach the harness clip (123) to the engine (Ref. detail N).
   (17) Make a note of the position of the spacer (278). Remove the nut (274), the bolt (275), the washer (276) and the spacer (278) that attach the clip (277) to the tube (279) (Ref. detail AS).
   (18) Remove the bolt (126) and the nut (127) that attach the harness clip (128) to the engine (Ref. detail P).
   (19) Make a note of the position of the spacer (296). Remove the nut (293), the bolt (294), the washer (295) and the spacer (296) that attach the clip (297) to the tubes (298) and (299) (Ref. detail AT).
   (20) Remove the nut (286), the bolt (288) that attach the clip (290) to the tubes (291) and (292) (Ref. detail AU).
   (21) Make a note of the position of the spacer (283). Remove the bolt (280), the washer (281) and the spacer (283) that attach the clip (284) to the tubes (282) and (285) (Ref. detail AV).
   (22) Remove the nut (260), the washer (258) and the bolt (257) that attach the clip (259) to the tube (261) (Ref. detail AN).
   (23) Pre SBN 71-0295
Remove the nut (265), the bolt (262) and the clip (263) that attach the tube (266) to the fire/overheat detector bracket (264) (Ref. detail AP).
   (24) SBN 71-0295
Make a note of the position of the spacer (269). Remove the nut (271), the bolt (267) and the spacer (269) that attach the clip (273) and the tube (272) to the tube (270) (Ref. detail AQ).
   (25) Remove the fire detection (system A), cabin services and nacelle temperature harness from the engine.
Subtask 71-52-41-020-058-A ** ON A/C NOT FOR ALL
G. Transferable parts removal
   (1) Remove all the clips from the harness to prepare the replacement harness for installation.
[Rev.10 from 2021] 2026.04.01 12:56:58 UTC