General Visual Inspection of Fuel Nozzle Attachment Area [IAE]

TASK 72-40-00-200-010-A
General Visual Inspection of Fuel Nozzle Attachment Area

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.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This task gives the procedure for a general visual inspection of the combustion section fuel nozzle attachment area.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	LIGHT SOURCE - INSPECTION
No specific	AR	MIRROR - INSPECTION, FLEXIBLE
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 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-13-41-000-010-A	Removal of the Fuel Nozzle
TASK 73-13-41-400-010-A	Installation of the Fuel Nozzle
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 71-00-20-000-040-A	Removal of the Power Plant (for corrective action)
TASK 71-00-20-000-040-A-01	Removal of the Power Plant with the Engine Positioner TWW 75E (MIAG) (for corrective action)
TASK 71-00-20-400-040-A	Installation of the Power Plant (for corrective action)
TASK 71-00-20-400-040-A-01	Installation of the Power Plant with the Engine Positioner TWW 75E (MIAG) (for corrective action)
TASK 73-13-41-000-010-A	Removal of the Fuel Nozzle (for corrective action)
TASK 73-13-41-400-010-A	Installation of the Fuel Nozzle (for corrective action)

3. Job Set-up
Subtask 72-40-00-941-050-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 72-40-00-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-40-00-040-050-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 72-40-00-010-051-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 72-40-00-210-050-A ** ON A/C NOT FOR ALL

A. Examine the Fuel Nozzle Attachment Area on the Diffuser Case. Use the LIGHT SOURCE - INSPECTION and the MIRROR - INSPECTION, FLEXIBLE, if necessary.
(1) Examine the fuel nozzle attachment bolts for security of attachment. All bolts must be there. No loose bolts or broken lockwire are permitted.
(a) Replace the bolts which are not there.
1 Torque and safety the bolts (Ref. AMM TASK 73-13-41-000-010) and (Ref. AMM TASK 73-13-41-400-010).
(2) Examine the diffuser case for cracks or holes in the area of the fuel nozzle attachment.
(a) If cracks or holes are found replace the power plant (Ref. AMM TASK 71-00-20-000-040) and (Ref. AMM TASK 71-00-20-400-040).
(3) Examine the diffuser case in the area of the fuel nozzle attachment for air leaks.
(a) If leaks are found replace the gasket at the fuel nozzle attachment location (Ref. AMM TASK 73-13-41-000-010) and (Ref. AMM TASK 73-13-41-400-010).
(4) Examine the diffuser case in the area of the fuel nozzles for evidence of fuel leaks.
(a) If carbon deposits, soot, cracks or other evidence of fuel leaks are found, remove and replace the effected fuel nozzle (Ref. AMM TASK 73-13-41-000-010) and (Ref. AMM TASK 73-13-41-400-010).

5. Close-up
Subtask 72-40-00-410-050-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) Close the thrust reverser halves. (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 72-40-00-440-050-A ** ON A/C NOT FOR ALL

B. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 72-40-00-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:46:15 UTC