W DOC AIRBUS | AMM A320F

Installation of the HJ8B Engine Wiring Harness [CFML]

TASK 73-21-60-400-814-A
Installation of the HJ8B Engine Wiring 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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 210
ZONE: 400
FIN: 4159KS
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 2M (6 FT) - ADJUSTABLE
No specific
1
GUN - SPRAY
No specific
1
PAINTBRUSH
No specific
1
PLIERS - JAWED, SOFT
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 36.75 and 33.25 lbf.in (0.42 and 0.38 m.daN ) T
No specific
Torque wrench: range to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2244)
primer 1200 OS
(Material No.CP2267)
RTV 106
(Material No.CP2442)
engine oil
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
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
31
FIREPROOF BLOCK
EIPC 72-00-00-15-070
 E. Referenced Information
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 72-24-01-400-801-A
Installation of Segment Shrouds 1 thru 5
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 HJ8B Engine Wiring Harness
3. Job Set-up
Subtask 73-21-60-941-080-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
  • 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 73-21-60-010-083-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
   (2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 73-21-60-040-056-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 73-21-60-010-090-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 73-21-60-420-069-A
A. Installation of the HJ8B Engine Wiring Harness (4159KS)
   (1) Remove all the COVER - PROTECTION and the CAP - PROTECTION from all the openings, tubes, hoses and connectors.
   (2) Make sure that the mating faces are clean and clear of unwanted materials.
CAUTION: MAKE SURE THAT THE HARNESS ORIENTATION AND POSITION IN THE CLAMPS GIVE THE MAXIMUM CLEARANCES WITH THE OTHER ENGINE PARTS. IF A CLEARANCE IS NOT SUFFICIENT, HARNESS CHAFING AND WEAR CAN OCCUR.
   (3) Install the HJ8B engine wiring harness (2) in the correct position in the clips (1) along its routing.
   (4) Install the new EIPC 72-00-00-15-070 FIREPROOF BLOCK (31).
   (5) Installation of the bracket assemblies:
     (a) Installation of the bracket assembly (25):
       1 Install the four bolts (26) and the four nuts (32) to attach the bracket assembly (25) on the fireproof block (31) and the bracket (29) and tighten them with your hand.
       2 TORQUE the four nuts (32) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
     (b) Installation of the bracket assembly (28):
       1 Install the five bolts (27) and the five nuts (30) to attach the bracket assembly (28) on the fireproof block (31) and the bracket (29) and tighten them with your hand.
       2 TORQUE the five nuts (30) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
   (6) Apply the RTV 106 (Material No.CP2267) on the fireproof block (31) around the HJ8B harnesses as follows:
     (a) Apply a layer of primer 1200 OS (Material No.CP2244) on both metal surfaces with a PAINTBRUSH or GUN - SPRAY.
     (b) Dry for 30 minutes.
     (c) Apply RTV 106 (Material No.CP2267) on both surfaces with an applicable applicator to get a uniform dimension bead of approximately 0.20 in. (5 mm) radius.
     (d) Let the RTV 106 (Material No.CP2267) polymerize at ambient temperature and humidity for approximately 24 hours or 30 minutes at 302 deg.F (150 deg.C).
   (7) Installation of the bolt on the clamp to attach the HJ8B engine wiring harness (2):
PRE SB 72-0444
     (a) Apply engine oil (Material No.CP2442) to the threads and friction surfaces of the bolts (21) and (23).
END OF PRE SB 72-0444
POST SB 72-0444
     (b) Apply the engine oil (Material No.CP2442) to the threads and friction surfaces of the bolt (21).
END OF POST SB 72-0444
PRE SB 72-0444
     (c) Install the bolt (23) to the clamp (24) and tighten it with your hand.
     (d) TORQUE the bolt (23) to between 36.75 and 33.25 lbf.in (0.42 and 0.38 m.daN ) T.
NOTE: The cushioned clamp (24) and the bolt (23) are deleted through SB 72-0444 and replaced by spring clip on the support bracket.
END OF PRE SB 72-0444
PRE SB 72-0251
     (e) Install the bolt (21) to the clamp (20) and tighten it with your hand.
     (f) TORQUE the bolt (21) to between 36.75 and 33.25 lbf.in (0.42 and 0.38 m.daN ) T.
     (g) Install the bolt (11) to the clamp (12) and tighten it with your hand.
     (h) TORQUE the bolt (11) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
END OF PRE SB 72-0251
POST SB 72-0251 and PRE SB 72-0444
     (i) Install the bolt (21) to the clamp (20) and tighten with your hand.
     (j) TORQUE the bolt (21) to between 36.75 and 33.25 lbf.in (0.42 and 0.38 m.daN ) T.
END OF POST SB 72-0251 and END OF PRE SB 72-0444
POST SB 72-0444
     (k) Install the bolt (21) to the clamp (20) and tighten with your hand.
     (l) TORQUE the bolt (21) to between 36.75 and 33.25 lbf.in (0.42 and 0.38 m.daN ) T.
END OF POST SB 72-0444
     (m) Install the bolt (10) to the clamp (6) and tighten it with your hand.
     (n) TORQUE the bolt (10) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
   (8) Installation of the bolt (9) and the nut (7) on the clamp (8) to attach the HJ8B engine wiring harness (2):
PRE SB 72-0122
     (a) Install the bolt (9) and the nut (7) to the clamp (8) and tighten them with your hand.
     (b) TORQUE the nut (7) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
END OF PRE SB 72-0122
POST SB 72-0122
     (c) Install the bolt (9) and the nut (7) to the clamp (8) and tighten with your hand.
     (d) TORQUE the nut (7) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN ) T.
END OF POST SB 72-0122
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: YOU MUST NOT USE PLIERS WITH METAL JAWS TO TIGHTEN OR LOOSEN THE CONNECTOR. THE METAL JAWS WILL CAUSE DAMAGE TO THE CONNECTOR.
   (9) Connection of the HJ8B engine wiring harness (4159KS) (2) connectors to these receptacles (Ref. AMM TASK 70-70-00-910-804).
NOTE: Only if necessary, use PLIERS - JAWED, SOFT to connect the electrical connectors.
     (a) Connect the HJ8B engine wiring harness (2) connector P87B to the T3 sensor channel B (4084KS) (22) (at the 2 o'clock position).
     (b) Connect the HJ8B engine wiring harness (2) connector P810B to the No. 1 bearing accelerometer receptacle J810B (4188KS) (19) (at the 2:30 o'clock position).
     (c) Connect the HJ8B engine wiring harness (2) connector P88B to the T48 harness (right) receptacle J88B (4168KS2) (18) (at the 2:30 o'clock position).
     (d) Connect the HJ8B engine wiring harness (2) connector P812 to the HJ8A engine wiring harness receptacle J812 (4158KS) (17) (at the 3 o'clock position).
     (e) Connect the HJ8B engine wiring harness (2) connector P81B to the Fuel Return Valve (FRV) channel B receptacle (4018KS) (16) (at the 12 o'clock position).
     (f) Connect the HJ8B engine wiring harness (2) connector P80B to the fan overheat temperature sensor 1 channel A receptacle (4250KS1) (15) (at the 12 o'clock position).
     (g) Connect the HJ8B engine wiring harness (2) connector P811B to the fan overheat temperature sensor 2 channel B receptacle (4250KS2) (13) (at the 6 o'clock position).
     (h) Connect the HJ8B engine wiring harness (2) connector P82 to the nacelle anti-ice pressure sensor 2 (4002DN) (14) (at the 6 o'clock position).
     (i) Connect the HJ8B engine wiring harness (2) connector P8B to the Electronic Engine Control (EEC) channel B J8 receptacle (5) (4601KS2) (at the 3 o'clock position).
     (j) Tighten the electrical harness connectors until you cannot see the color marks on the receptacles.
     (k) Make sure that the electrical harness connectors do not move after you fully engage them.
   (10) Install the segment shroud 2 (3) (Ref. AMM TASK 72-24-01-400-801).
   (11) Install the segment shroud 1 (4) (Ref. AMM TASK 72-24-01-400-801).
   (12) Remove the access platform(s).
5. Close-up
Subtask 73-21-60-710-079-A
A. Test
   (1) Do the FADEC test (Menu Mode) (Ref. AMM TASK 73-29-00-710-802).
Subtask 73-21-60-410-071-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 73-21-60-440-053-A
C. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 73-21-60-410-067-A
D. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
Remove the access platform(s).
   (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 WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 03:05:32 UTC
"Aviabrain" 2025