Fan Frame T2.5CM Repair - VRS1596 [IAE]

TASK 72-32-03-300-011-B
Fan Frame T2.5CM Repair - VRS1596

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	CRIMPING TOOL
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V08-013)	cold curing silicone

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
0	TERMINAL ASSEMBLY	AIPC 72-32-03-80-020

E. 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
Install Serviceable T/C to Fan Frame Assembly

3. Job Set-up
Subtask 72-32-03-941-056-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 72-32-03-010-060-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 72-32-03-040-055-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 72-32-03-010-061-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR.
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.
(2) Put the ACCESS PLATFORM 1M(3 FT) into position.

4. Procedure
Subtask 72-32-03-020-052-A ** ON A/C NOT FOR ALL

A. Remove the terminal assembly from fan frame.

Install Serviceable T/C to Fan Frame Assembly ** ON A/C NOT FOR ALL

Subtask 72-32-03-350-056-A ** ON A/C NOT FOR ALL

B. Dig out silicone compound from the block connector.

Install Serviceable T/C to Fan Frame Assembly ** ON A/C NOT FOR ALL

Subtask 72-32-03-020-053-A ** ON A/C NOT FOR ALL

C. Remove the thermocouple wires from the terminal block.

Subtask 72-32-03-750-052-A ** ON A/C NOT FOR ALL

D. Do a check for the resistance of each thermocouple (between chromel wires and alumel wires).
(1) The resistance must be between 1.15 and 1.45 ohm.

Subtask 72-32-03-420-051-A ** ON A/C NOT FOR ALL

E. Install serviceable AIPC 72-32-03-80-020 TERMINAL ASSEMBLY (0) to fan frame assembly.

Install Serviceable T/C to Fan Frame Assembly ** ON A/C NOT FOR ALL

(1) Cut the dead thermocouple wires to isolate.
(2) Connect the serviceable thermocouple wires to the terminal block using CRIMPING TOOL.
(3) Fill the block connector with cold curing silicone (Material No.V08-013) .
(4) Put the wire into the silicone compound in the block connector, making the shape of a coil, until the wire is fully contained in the connector.
(5) Install the terminal assembly and the bracket to the block connector using two bolts. Tighten the bolts.
(6) TORQUE the bolts to between 45 and 36 lbf.in (0.51 and 0.41 m.daN )

Subtask 72-32-03-750-053-A ** ON A/C NOT FOR ALL

F. Do the loop resistance check between the almel stud and chromel stud.
(1) The resistance must be between 0.4 and 1.8 ohm.

5. Close-up
Subtask 72-32-03-410-060-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 72-32-03-440-055-A ** ON A/C NOT FOR ALL

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

Subtask 72-32-03-410-061-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).

[Rev.10 from 2021] 2026.04.01 02:45:18 UTC