Installation of the Inlet Cowl T2-Probe Harness [PW11]

TASK 71-61-51-400-801-A
Installation of the Inlet Cowl T2-Probe Harness

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

FIN: 4110KS ** 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	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	PLIERS - JAWED, SOFT
No specific	Torque wrench: range to between 8 and 7 lbf.in (0.09 and 0.08 m.daN )
No specific	Torque wrench: range to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN )

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
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 71-61-11-000-801-A	Removal of the Aft Bulkhead T2 Panel
TASK 71-61-11-400-801-A	Installation of the Aft Bulkhead T2 Panel
TASK 71-61-12-400-801-A	Installation of the T2 Probe
TASK 73-21-00-710-806-A	Test No.7 - EEC Operation Test (Self Test)
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
Inlet Cowl T2-Probe Harness

3. Job Set-up
Subtask 71-61-51-941-051-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 71-61-51-010-051-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
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(3) Make sure that the aft bulkhead T2 panel is removed (Ref. AMM TASK 71-61-11-000-801).

4. Procedure
Subtask 71-61-51-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Inlet Cowl T2-Probe Harness
(1) Removal of the protection covers

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

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2) Install the inlet cowl T2-probe harness (3).
(a) Put the clamp (6) on the inlet cowl T2-probe harness (3).
(b) Attach the inlet cowl T2-probe harness (3) and the clamp (6) to the T2 harness bracket. Use the bolt (4) and washer (5).

NOTE: Do not torque the bolt (4) at this time.

(c) Attach the inlet cowl T2-probe harness (3) (D1001P) to the T2 disconnect panel. Use the four bolts (1) and the four washers (2).
(d) TORQUE the bolts (1) to between 8 and 7 lbf.in (0.09 and 0.08 m.daN )

.
(e) Connect the inlet cowl T2-probe harness (3) (D1000P) to the T2-probe (Ref. AMM TASK 71-61-12-400-801).
1 Turn the connector finger-tight. Then turn the connector 1/8 to 1/4 of a turn more with PLIERS - JAWED, SOFT.
(f) Connect the T2 jumper harness to the inlet cowl T2-probe harness (3) (Ref. AMM TASK 71-61-11-400-801).
(g) Adjust the inlet cowl T2-probe harness (3) to keep the preload to a minimum.
(h) TORQUE the bolts (4) to between 35 and 31.5 lbf.in (0.40 and 0.36 m.daN )

5. Close-up
Subtask 71-61-51-410-051-A ** ON A/C NOT FOR ALL

A. Installation of Aft Bulkhead T2 panel
(1) Install the aft bulkhead T2 panel (Ref. AMM TASK 71-61-11-400-801).

Subtask 71-61-51-410-050-A ** ON A/C NOT FOR ALL

B. 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 access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) 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 71-61-51-710-050-A ** ON A/C NOT FOR ALL

C. Test
(1) Do an EEC operation test (Self Test) (Ref. AMM TASK 73-21-00-710-806).

[Rev.10 from 2021] 2026.04.01 02:33:49 UTC