W DOC AIRBUS | AMM A320F

Installation of the Fuel Flow Transmitter [CFML]

TASK 73-31-10-400-802-A
Installation of the Fuel Flow Transmitter

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: 4010KS
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
CONTAINER 20L (5 USGAL)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 38 and 32 lbf.in (0.43 and 0.36 m.daN ) T
No specific
Torque wrench: range to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(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, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 462AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
12
GASKET, FUEL AND OIL FLANGE SEAL
EIPC 73-31-05-01-030
11
GASKET, FUEL AND OIL FLANGE SEAL
EIPC 73-31-05-01-050
 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 72-24-80-400-801-A
Installation of the Variable Bleed Valve (VBV) Ducts
TASK 73-29-00-740-803-A
Idle 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 Fuel Flow Transmitter
3. Job Set-up
Subtask 73-31-10-941-053-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 73-31-10-010-058-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 73-31-10-040-055-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 73-31-10-010-059-A
D. Get Access
   (1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
4. Procedure
Subtask 73-31-10-420-052-A
A. Installation of the Fuel Flow Transmitter
   (1) Remove all the COVER - PROTECTION and the CAP - PROTECTION from the openings, tubes, hoses and connectors.
   (2) If there is preservation oil in the fuel flow transmitter (3), let it drain into a CONTAINER 20L (5 USGAL).
   (3) Examine the P22 fuel supply tube (14), P23 fuel supply tube (9) and fuel flow transmitter (3) for unwanted material.
   (4) Put the fuel flow transmitter (3), and the two new 73310501-050GASKET, FUEL AND OIL FLANGE SEAL11 and 73310501-030GASKET, FUEL AND OIL FLANGE SEAL12 in position between the P22 fuel supply tube (14) and the P23 fuel supply tube (9).
   (5)
PRE SB 72-0221
PRE SB 72-0273

Apply a layer of engine oil (Material No.CP2442) to the fourteen bolts (10), (16), (18), (24) and (25).

END OF PRE SB 72-0221
END OF PRE SB 72-0273

   (6)
POST SB 72-0221
POST SB 72-0273

Apply a layer of engine oil (Material No.CP2442) to the eight bolts (21) and (28).

END OF POST SB 72-0221
END OF POST SB 72-0273

   (7)
PRE SB 72-0273

Attach the flowmeter support bracket (26) or (27) to the flange of the P22 fuel supply tube (14) with two bolts (24). Tighten the bolts (24) with your hand.
   (8) Attach the flange of the P22 fuel supply tube (14) to the fuel flow transmitter (3) with four bolts (25).
     (a) TORQUE the four bolts (25) attached to the P22 fuel supply tube (14) and the fuel flow transmitter (3) in a crisscross pattern to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.
     (b) Visually make sure that all the bolt heads are installed on the fuel flow transmitter (3) flange.
     (c) Make sure that the torque value in a crisscross pattern of the bolts (25) installed on the P22 fuel supply tube (14) is correct.
   (9) TORQUE the two bolts (24) attached to the P22 fuel supply tube (14) and flowmeter support bracket (26) or (27) to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.

END OF PRE SB 72-0273

   (10)
POST SB 72-0273

Attach the flowmeter support bracket (29) or (30) to the flange of the P22 fuel supply tube (14) and fuel flow transmitter (3) with four bolts (28). Tighten the bolts (28) with your hand.
     (a) TORQUE the bolts (28) attached to the P22 fuel supply tube (14) in a crisscross pattern to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.
     (b) Visually make sure all bolt heads and brackets are seated on the fuel flow transmitter (3) flange.
     (c) Make sure that the torque value in a crisscross pattern of the bolts (28) installed on the P22 fuel supply tube (14) is correct.

END OF POST SB 72-0273

   (11)
PRE SB 72-0221

Attach the P23 fuel supply tube (9) to the flowmeter support bracket (17) with the two bolts (16). Tighten the two bolts (16) with your hand.
   (12) Attach the P23 fuel supply tube (9) and electrical harnesses support bracket (20) to the flowmeter support bracket (19) with the two bolts (18). Tighten the two bolts (18) with your hand.
   (13) Attach the P23 fuel supply tube (9) to the fuel flow transmitter (3) with four bolts (10).
     (a) TORQUE the four bolts (10) attached to the P23 fuel supply tube (9) and the fuel flow transmitter (3) in a crisscross pattern to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.
     (b) Visually make sure that all the bolt heads are installed on the fuel flow transmitter (3) flange.
     (c) Make sure that the torque value in a crisscross pattern of the bolts (10) installed on the P23 fuel supply tube (9) is correct.
   (14) TORQUE the remaining four bolts (16) and (18) attached to the P23 fuel supply tube (9) and the flowmeter support brackets (17) and (19), and electrical harnesses support bracket (20) to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.

END OF PRE SB 72-0221

   (15)
POST SB 72-0221

Attach the P23 fuel supply tube (9) to the flowmeter support bracket (23) with the two bolts (21). Tighten the two bolts (21) with your hand.
   (16) Attach the P23 fuel supply tube (9) and the fuel valve support bracket (22) with the two bolts (21). Tighten the two bolts (21) with your hand.
     (a) TORQUE the bolts (21) attached to the P23 fuel supply tube (9) in a crisscross pattern to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.
     (b) Visually make sure all bolt heads and brackets are seated on the fuel flow transmitter (3) flange.
     (c) Make sure that the torque value in a crisscross pattern of the bolts (21) installed on the P23 fuel supply tube (9) is correct.

END OF POST SB 72-0221

   (17) Connect the electrical connector (4) to the fuel flow transmitter (3) (Ref. AMM TASK 70-70-00-910-804).
   (18) Apply engine oil (Material No.CP2442) to the threads and friction surfaces of the bolt (5).
   (19) Install the bolt (5) that attaches the loop clamp (6) and the HJ5A electrical harness (7) to the support bracket (8).
   (20) TORQUE the bolt (5) to between 38 and 32 lbf.in (0.43 and 0.36 m.daN ) T.
   (21) Install the Variable Bleed Valve (VBV) duct 4 (Ref. AMM TASK 72-24-80-400-801).
   (22) Install the segment shroud 3 (Ref. AMM TASK 72-24-01-400-801).
   (23) Install the VBV duct 2 and 3 (Ref. AMM TASK 72-24-80-400-801).
   (24) Install the segment shroud 2 (Ref. AMM TASK 72-24-01-400-801).
5. Close-up
Subtask 73-31-10-410-054-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
Subtask 73-31-10-440-052-A
B. Do the reactivation of the thrust reverser after maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 73-31-10-710-052-A
C. Test
   (1) Do the idle test (menu mode) (Ref. AMM TASK 73-29-00-740-803).
Subtask 73-31-10-410-055-A
D. 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).
[Rev.10 from 2021] 2026.04.01 13:06:53 UTC
"Aviabrain" 2025