DOC AIRBUS | AMM A320FInstallation of the Hydraulic Pump Electrical Harness from the Pylon to the Pump [CFML]
TASK 71-51-43-400-804-A
Installation of the Hydraulic Pump Electrical Harness from the Pylon to the Pump
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 71-51-43-941-077-A
Subtask 71-51-43-420-080-A
Subtask 71-51-43-410-074-A
[Rev.10 from 2021]
2026.04.02 06:33:27 UTC
Installation of the Hydraulic Pump Electrical Harness from the Pylon to the Pump
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CPNCL00062) | LUBRICATING OIL TURBINE ENGINE SYNT BASE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-70-00-910-804-A | Electrical Standard Practices |
| 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) |
Hydraulic Pump Electrical Harness from the Pylon to the PumpSubtask 71-51-43-941-077-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:
(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 71-51-43-010-094-A (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
- The ENG/MASTER 1(2) control switch.
(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).
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
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position under the left fan cowl door.
4. Procedure(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
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position under the left fan cowl door.
Subtask 71-51-43-420-080-A
A. Installation of the Hydraulic Pump Electrical Harness
(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Put the P-clamps (8), (25), (30), (39) and (37) in position on the harness (2). Use the record made during the removal procedure to help get the correct location and position.
(3) Lubricate the threads of the bolts that follow with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) :
(5) Connect the electrical connectors on the harness (2) as follows (Ref. AMM TASK 70-70-00-910-804):
(b) Connect the electrical connector (34) to the electrical connector (36) at the bracket (35).
(c) Connect the electrical connector (31) and electrical connector (32) to the receptacles on the Integrated Drive Generator (IDG) (33).
(d) Connect the electrical connector (11) to the receptacle on the hydraulic pump pressure switch (10).
(e) Connect the electrical connector (18) to either the nacelle interphone jack harness connector (17), or the dummy receptacle (51) on the support bracket (50) and nacelle interphone jack harness support bracket (52).
(6) Loosely install the three bolts (29), (38) and (40) to attach the three P-clamps (30), (37) and (39) to the support bracket (28).
(7) Loosely install the bolt (24) to attach the P-clamp (25) to the support bracket (21).
(8) Pass the upper end of the harness (2) through the opening between the pylon and the engine at the 12 o'clock position.
(9) Move the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE under the right fan cowl door.
(10) Connect the electrical connector (6) on the harness (2) to the receptacle on the pylon junction box (1) (Ref. AMM TASK 70-70-00-910-804).
(11) Loosely install the bolt (9) to attach the P-clamp (8) to the bracket (7).
(12) Push the harness (2) into the spring clips of the support brackets (3), (4) and (5). As you do this, adjust the tension in the harness along the routing at the top of the engine. Make sure the harness does not touch adjacent parts.
(13) TORQUE the bolt (9) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in ).
(14) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position under the left fan cowl door.
(15) Put the harness (2) in the spring clips of the support brackets (12), (22), (23), (28), (39), (40), (41), (42), (43), (44), (45), (46), (47), (48) and (49). As you do this, adjust the tension in the harness along the routing.
(a) Make sure that the harness does not touch adjacent parts.
(16) TORQUE the bolts (24), (29), (40) and (38) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in ).
Subtask 71-51-43-710-069-A 5. Close-up(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Put the P-clamps (8), (25), (30), (39) and (37) in position on the harness (2). Use the record made during the removal procedure to help get the correct location and position.
(3) Lubricate the threads of the bolts that follow with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) :
- Three bolts (29), (38) and (40)
- One bolt (24)
- One bolt (9).
(5) Connect the electrical connectors on the harness (2) as follows (Ref. AMM TASK 70-70-00-910-804):
NOTE: If necessary use PLIERS - CONNECTOR, JAW, SOFT to connect electrical connectors.
(a) Connect the electrical connector (27) to the receptacle on the hydraulic pump (20). (b) Connect the electrical connector (34) to the electrical connector (36) at the bracket (35).
(c) Connect the electrical connector (31) and electrical connector (32) to the receptacles on the Integrated Drive Generator (IDG) (33).
(d) Connect the electrical connector (11) to the receptacle on the hydraulic pump pressure switch (10).
(e) Connect the electrical connector (18) to either the nacelle interphone jack harness connector (17), or the dummy receptacle (51) on the support bracket (50) and nacelle interphone jack harness support bracket (52).
NOTE: The nacelle interphone jack is an optional kit.
(f) Connect the electrical connector (19) to the receptacle on the oil Low Pressure (LP) switch (16). (6) Loosely install the three bolts (29), (38) and (40) to attach the three P-clamps (30), (37) and (39) to the support bracket (28).
(7) Loosely install the bolt (24) to attach the P-clamp (25) to the support bracket (21).
(8) Pass the upper end of the harness (2) through the opening between the pylon and the engine at the 12 o'clock position.
(9) Move the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE under the right fan cowl door.
(10) Connect the electrical connector (6) on the harness (2) to the receptacle on the pylon junction box (1) (Ref. AMM TASK 70-70-00-910-804).
(11) Loosely install the bolt (9) to attach the P-clamp (8) to the bracket (7).
(12) Push the harness (2) into the spring clips of the support brackets (3), (4) and (5). As you do this, adjust the tension in the harness along the routing at the top of the engine. Make sure the harness does not touch adjacent parts.
(13) TORQUE the bolt (9) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )
. (14) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position under the left fan cowl door.
(15) Put the harness (2) in the spring clips of the support brackets (12), (22), (23), (28), (39), (40), (41), (42), (43), (44), (45), (46), (47), (48) and (49). As you do this, adjust the tension in the harness along the routing.
(a) Make sure that the harness does not touch adjacent parts.
(16) TORQUE the bolts (24), (29), (40) and (38) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )
. Subtask 71-51-43-410-074-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) 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
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) 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
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).