Removal of the screen [IAE]

TASK 72-32-60-000-010-A
Removal of the screen

1. Reason for the Job
This task is for V2500-A1 PRE SBE 72-0595 engines and V2500-A5 PRE SBE 70-0631 engines.
This task is not required for V2500-A1 POST SBE 72-0595 and V2500-A5 POST SBE 70-0631 engines.
This task gives the procedure for the removal of the screen.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
IAE1J12187	1	COVER-PROTECTION LPC BLEED DUCT

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR, 461AL, 462AR
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 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
Illustration of the Bleed Duct Screen
Illustration of the Bleed Duct Screen
Illustration of the Bleed Duct Screen
Illustration of the Bleed Duct Screen

3. Job Set-up
Subtask 72-32-60-941-052-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 72-32-60-010-054-A ** ON A/C NOT FOR ALL

B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 72-32-60-040-052-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 72-32-60-010-055-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 72-32-60-010-056-A ** ON A/C NOT FOR ALL

A. Remove the screen for A1 PRE SBE 72-0595 engines.

Illustration of the Bleed Duct Screen ** ON A/C NOT FOR ALL

CAUTION: IF THE SCREEN IS TORN OR THE SCREEN IS NOT INSTALLED, YOU MUST INSTALL A PLASTIC COVER OVER THE BLEED DUCT OUTLET WHEN MAINTENANCE WORK IS DONE IN THE ADJACENT AREA. YOU MUST MAKE SURE THAT THE COVER HAS A WARNING FLAG TO TELL PERSONS TO REMOVE THE COVER BEFORE THE ENGINE IS OPERATED.

CAUTION: YOU MUST MAKE SURE THAT YOU REMOVE THE PLASTIC COVER FROM THE BLEED DUCT OUTLET. IF YOU DO NOT DO THIS IT CAN CAUSE ENGINE SURGE AND DAMAGE WHEN THE ENGINE IS OPERATED.

CAUTION: YOU MUST NOT DROP THE PART (SCREEN) INTO THE ENGINE (BLEED DUCT). IF THE PART IS DROPPED, IT CAN CAUSE ENGINE SURGE AND DAMAGE WHEN THE ENGINE IS OPERATED.

(1) Cut the frame of the screen (1).
(2) Pull up and remove the screen (1) from the bleed duct. Take care not to damage the bleed duct. Make sure that no part of the removed screen goes into the duct.

Subtask 72-32-60-010-057-A ** ON A/C NOT FOR ALL

B. Remove the screen for V2500-A5 PRE SBE 70-0631 engines.

Illustration of the Bleed Duct Screen ** ON A/C NOT FOR ALL

CAUTION: YOU MUST MAKE SURE THAT YOU REMOVE THE PLASTIC COVER FROM THE BLEED DUCT OUTLET. IF YOU DO NOT DO THIS IT CAN CAUSE ENGINE SURGE AND DAMAGE WHEN THE ENGINE IS OPERATED.

CAUTION: DO NOT FULLY UNSCREW THE ATTACHING SCREWS. IF THE SCREWS ARE DETACHED FROM THE FRAME OF SCREEN, RETAINERS BECOME FREE UNDER THE FRAME OF SCREEN AND MAY DROP INTO THE BLEED DUCT.

CAUTION: YOU MUST NOT DROP THE PART (SCREEN, SCREWS AND RETAINERS) INTO THE ENGINE (BLEED DUCT). IF THE PART IS DROPPED, IT CAN CAUSE ENGINE SURGE AND DAMAGE WHEN THE ENGINE IS OPERATED.

(1) Loosen the three screws (3) until the thread of the screw is free from the duct. Ensure the retainer remains on the thread of the screw.
(2) Remove the damaged screen (2), from the bleed duct. Take care not to damage the bleed duct.
(3) Check the quantity of screens (2), screws (3) and retainers (4) removed from engine.
There should be three screws.
There should be three retainers, threaded on the screws.
There should be one screen.

5. Close-up
Subtask 72-32-60-942-052-A ** ON A/C NOT FOR ALL

A. Remove the ground support equipment.

CAUTION: YOU MUST MAKE SURE THAT YOU REMOVE THE PLASTIC COVER FROM THE BLEED DUCT OUTLET. IF YOU DO NOT DO THIS IT CAN CAUSE ENGINE SURGE AND DAMAGE WHEN THE ENGINE IS OPERATED.

(1) Remove the IAE1J12187 COVER-PROTECTION LPC BLEED DUCT from the bleed duct outlet, if installed.
(2) Remove the access platform (s).

Subtask 72-32-60-410-054-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 halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(3) FOR [1000EM1] (ENGINE-1)
461AL 462AR.

Subtask 72-32-60-440-052-A ** ON A/C NOT FOR ALL

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

Subtask 72-32-60-410-055-A ** ON A/C NOT FOR ALL

D. 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).

[Rev.10 from 2021] 2026.04.01 02:45:22 UTC