Removal of the Fuel Distribution Valve [IAE]

TASK 73-13-43-000-010-B
Removal of the Fuel Distribution Valve

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 NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

CAUTION: DO NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

FIN: 2002EM ** 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	ACCESS PLATFORM 1M(3 FT)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. 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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
Fuel Distribution Valve (Fuel supply tube and clip Point 5700)
Fuel Distribution Valve

3. Job Set-up
Subtask 73-13-43-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-13-43-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010)
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 73-13-43-040-052-A ** ON A/C NOT FOR ALL

C. Deactivate the thrust reverser.

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 73-13-43-010-054-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

4. Procedure
Subtask 73-13-43-020-053-A ** ON A/C NOT FOR ALL

A. Removal of the fuel distribution valve
(1) Remove the fuel supply tube

Fuel Distribution Valve (Fuel supply tube and clip Point 5700) ** ON A/C NOT FOR ALL

(a) Remove the nut (13), the washer (15) and the bolt (16) from the clip point 5700. Do not remove the loop clamps (14) and (17).
(b) Remove the three bolts (18) that attach the fuel supply tube (19) to the fuel distribution valve.
(c) Remove the lockwire from the fuel supply tube nut (23) at the bifurcation panel (20).
(d) Disconnect the tube nut (23).
(e) Remove the tube (19) from the engine.
(f) Remove and discard the ring (24).
(g) Remove and discard the packing (22) from the connector (21) at the bifurcation panel.
(2) Disconnect the fuel nozzle supply manifold nuts

Fuel Distribution Valve ** ON A/C NOT FOR ALL

(a) Remove the lockwire from the manifold nuts on the fuel manifolds (8) at the rear of the fuel distribution valve.
(b) Disconnect the fuel manifold nuts from the adapters (5) on the distribution valve.
(3) Remove the fuel distribution valve

Fuel Distribution Valve ** ON A/C NOT FOR ALL

(a) Remove the two bolts (10) that attach the fuel distribution valve (3) to the rear mount brackets (11).
(b) Remove the four bolts (2) that attach the front support (1) to the stage 7 HPC air bleed valve flange.
(c) Remove the valve from the engine.
(4) Remove the transfer tubes, the packings and the gaskets

Fuel Distribution Valve ** ON A/C NOT FOR ALL

(a) Remove the transfer tubes (6) from the valve adapters (or manifolds).
(b) Remove the packings (9) from the transfer tubes (6) and discard the packings.
(c) Remove and discard the metal gaskets (7) from each of the adapters on the
(5) If the fuel distribution valve is to be replaced do these steps:

Fuel Distribution Valve ** ON A/C NOT FOR ALL

(a) Remove the adapters (5) from the ten openings on the rear of the valve.
(b) Remove the packings (4) and discard them.
(c) Remove the two bolts (12) that attach the front support (1) to the fuel distribution valve (3) and remove the support.
(6) Put the COVER - PROTECTION on all of the openings.

[Rev.10 from 2021] 2026.04.01 03:00:34 UTC