Installation of the Fuel Flow Transmitter [CFMI]

TASK 73-31-10-400-001-A
Installation of the Fuel Flow Transmitter

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	PLIERS - NOSE, SOFT, LONG
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )
No specific	Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
No specific	Torque wrench: range to between 1100 and 900 lbf.in (12.43 and 10.17 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP5070)	vaseline

C. 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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
180	O-RING	AIPC 73-31-10-01-085
90	O-RING	AIPC 73-31-10-01-155

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 70-21-00-918-001-A	Seals (Preformed Packings and O-rings) and Gaskets
TASK 71-00-00-710-006-A	Minimum Idle Check
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 73-29-00-710-040-A-02	Operational Test of the FADEC on the Ground (with Engine non Motoring)
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Fuel Flow Transmitter Mounting

3. Job Set-up
Subtask 73-31-10-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 73-31-10-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(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 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-31-10-040-051-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 73-31-10-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Fuel Flow Transmitter:
(1) Remove blanking plugs from the ends of the fuel supply hose (20) ,the fuel injected supply tube tubing, and the fuel flow transmitter (140).
(2) Examine the fuel supply hose (20) and the fuel flow transmitter (140) for unwanted material.
(3) Lubricate the new AIPC 73-31-10-01-155 O-RING (90) with vaseline (Material No.CP5070) . Install the O-ring (90) on the end of the fuel supply hose (20).
(4) Install the discharge bracket.

CAUTION: MAKE SURE THE FLOW DIRECTION ARROW SHOWS THE CORRECT DIRECTION. IF THE FUEL FLOW TRANSMITTER IS NOT CORRECTLY INSTALLED. IT CAN BE DAMAGED.

CAUTION: DO NOT TORQUE ANY OF THE BOLTS AT THIS TIME OR DAMAGE TO ENGINE HARDWARE COULD OCCUR.

CAUTION: DO NOT INTERMIX THE FUEL FLOW TRANSMITTER FLANGE BOLTS OR SEVERE FUEL LEAKAGE COULD OCCUR.

(a) Install the discharge bracket (120) to the fuel flow transmitter (140). Engage the alignment pin in the hole on the discharge bracket (120). Make sure the flow direction arrow points to the transfer gearbox.
(5) Install the fuel supply hose (20) to the fuel flow transmitter (140) as follows:
(a) Install the bolts (30) in the flange of the fuel supply hose (20).
(b) Install the support bracket (70) to the flange of the fuel supply hose (20) with the bolts (40).
(6) Install the inlet bracket (170) to the assembled fuel flow transmitter (140) and the fuel supply hose (20).
(7) Install the discharge bracket (120) to the HMU with bolts (100) and washers (110).
(8) Install the bolts (150) and washers (160) on the inlet bracket (170).
(9) Install the fuel supply hose (20) at the union (10) of the fuel injected supply tube tubing. Tighten the fuel supply hose (20) with your hand.
(10) Install the fuel supply tube (200) as follows:
(a) Remove the blanking caps from the ends of the fuel supply tube (200) and the discharge port on the HMU.
(b) Lubricate a new AIPC 73-31-10-01-085 O-RING (180) with vaseline (Material No.CP5070) . Install the O-ring (180) on the fuel supply tube (200).
(c) Lubricate the gasket (220) with vaseline (Material No.CP5070) . Install the gasket (220) on the discharge port of the HMU.

NOTE: You can use the old gasket again if it is not damaged, (Ref. AMM TASK 70-21-00-918-001).

(d) Put the end of the fuel supply tube (200) through the inlet bracket (170) and in the end of the fuel flow transmitter (140).
(e) Install the bolts (190) in the flange that attaches the fuel supply tube (200) to the fuel flow transmitter (140).
(f) Install the bolts (210) in the flange of the fuel supply tube (200) and the discharge port of the HMU.
(11) Install the clamp (60) on the electrical harness (130). Attach the clamp (60) to the support bracket (70) with the bolt (50) and nut (80). TORQUE the bolt (50) to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

.
(12) TORQUE the bolts as follows:

CAUTION: YOU MUST DO THE STEPS THAT FOLLOW IN SEQUENCE OR DAMAGE TO THE FUEL SUPPLY TUBE OR FUEL FLOW TRANSMITTER COULD OCCUR.

(a) TORQUE the bolts (210) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(b) TORQUE the bolts (30, 40) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(c) TORQUE the union (10) to between 1100 and 900 lbf.in (12.43 and 10.17 m.daN )

.
(d) TORQUE the bolts (190) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(e) TORQUE the bolts (100) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(f) TORQUE the bolts (150) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(13) Remove the blanking caps from the electrical connector (130) and the fuel flow transmitter (140).
(14) Connect the electrical connector (130) to the fuel flow transmitter (140). Tighten the connector (130) with your hand plus one-eighth of a turn. Use PLIERS - NOSE, SOFT, LONG if necessary.

Subtask 73-31-10-410-051-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-31-10-440-050-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041)

Subtask 73-31-10-861-050-A ** ON A/C NOT FOR ALL

D. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 73-31-10-869-051-A ** ON A/C NOT FOR ALL

E. Do the EIS start procedure (upper ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(1) On the ECAM control panel select ENGINE page.

Subtask 73-31-10-710-050-A ** ON A/C NOT FOR ALL

F. Do this test
(1) Do a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006).
(2) On the ECAM display unit make sure that the FF (Fuel Flow) indication comes into view.

Subtask 73-31-10-710-050-B ** ON A/C NOT FOR ALL

F. Do this test
(1) Do a FADEC ground test (Ref. AMM TASK 73-29-00-710-040).
(2) Do a minimum idle leak check (Ref. AMM TASK 71-00-00-710-006).

Subtask 73-31-10-210-050-A ** ON A/C NOT FOR ALL

G. Make sure that there are no leaks at connections.

5. Close-up
Subtask 73-31-10-869-050-A ** ON A/C NOT FOR ALL

A. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

Subtask 73-31-10-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 73-31-10-410-050-A ** ON A/C NOT FOR ALL

C. 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 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:57:19 UTC