Installation of the Fuel Flow Transmitter [PW11]

TASK 73-31-21-400-801-A
Installation of the Fuel Flow Transmitter

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400
FIN: 4010KS ** ON A/C NOT FOR ALL

1. Reason for the Job
Use this procedure to install the transmitter.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	PLIERS - JAWED, SOFT
No specific	Torque wrench: range to between 18 and 15 lbf.in (0.20 and 0.17 m.daN )
No specific	Torque wrench: range to between 44 and 38 lbf.in (0.50 and 0.43 m.daN )
No specific	Torque wrench: range to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )
No specific	Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )
No specific	Torque wrench: range to between 750 and 675 lbf.in (8.48 and 7.63 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P06-053)	Sealing Ring Lubricant
(Material No.P06-054)	Antigalling Compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	PACKING-PREFORMED	EIPC 73-31-21-01-090

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-832-A	Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
TASK 80-11-49-400-802-A	Installation of the Lower Starter Air Duct
Fuel Flow Transmitter

3. Job Set-up
Subtask 73-31-21-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832).

Subtask 73-31-21-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR

Subtask 73-31-21-040-051-A ** ON A/C NOT FOR ALL

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 78-30-00-040-805).

Subtask 73-31-21-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the right thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 73-31-21-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Fuel Flow Transmitter

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(1) Make sure that you remove the COVER - PROTECTION as necessary to prevent damage to the engine.
(2) Install the fuel flow transmitter (1) on the engine as follows: see the sheet 1 of the figure.
(a) Apply P03-001lubricant, aircraft turbine engine or Sealing Ring Lubricant (Material No.P06-053) to the two new EIPC 73-31-21-01-090 PACKING-PREFORMED (2).
(b) Install a packing (2) on each adapter bracket (4) and (6).
(c) Apply Antigalling Compound (Material No.P06-054) to the threads of the eight bolts (3) and the four bolts (5).

NOTE: For new or refurbished bolts or nuts with baked-on lubricant, do not do the wet application.

(d) Attach the adapter brackets (4) and (6) to the fuel flow transmitter (1) with the eight bolts (3).
(e) TORQUE the eight bolts (3) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )

in small increments and until the same torque indication holds.
(f) Install the fuel flow transmitter (1) and the adapter brackets (4) and (6) to the brackets with the four bolts (5).
(g) TORQUE the four bolts (5) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

.
(3) Attach the tube (FM01) coupling nut to the adapter bracket (4) finger-tight.
(4) Install the fuel tube (FM02) (18) on the engine (1) as follows: see the sheet 2 of the figure.
(a) Attach the tube (FM02) (18) coupling nuts to the adapter bracket (6) finger-tight and to the fuel oil manifold finger-tight.
(b) Torque the tube (FM01) and the two (FM02) (18) coupling nuts as follows:
1 TORQUE the three B-nuts to between 750 and 675 lbf.in (8.48 and 7.63 m.daN )

.
(c) Apply Antigalling Compound (Material No.P06-054) to the threads of the bolt (20).

NOTE: For new or refurbished bolts or nuts with baked-on lubricant, do not do the wet application.

(d) Attach the clamp (19) to the tube (FM02) (18) with the bolt (20), if necessary.
(e) TORQUE the bolt (20) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN )

.
(f) Attach the clamp (16) and the heat shields (17) to the tube (FM02) (18).
(g) TORQUE the clamp (16) to between 18 and 15 lbf.in (0.20 and 0.17 m.daN )

.
(5) Connect the wiring harness (WC08) connector (P27) to the transmitter receptacle (J27) as follows:
(a) Examine, align and engage the connector.
(b) Push lightly inward on the connector while you tighten the coupling ring.
(c) Use the PLIERS - JAWED, SOFT and tighten the connector against the receptacle.
(d) Make sure that you can feel the ratchet feature.
(e) While you tighten, push the connector in and from side to side.
(f) Tighten the connector until the pliers slip on the connector ring.
(6) Install the lower starter air duct (Ref. AMM TASK 80-11-49-400-802).

5. Close-up
Subtask 73-31-21-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the right thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR

Subtask 73-31-21-440-050-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 73-31-21-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802).

Subtask 73-31-21-710-050-A ** ON A/C NOT FOR ALL

D. Test
(1) Do the test 3A - Power Plant - Operation Test (Idle Power Test - Cowls closed) (Ref. AMM TASK 71-00-00-720-811).

[Rev.10 from 2021] 2026.04.01 03:03:36 UTC