Removal of the Nacelle Anti-Ice Fan Case Thermocouple

TASK 30-21-24-000-801-A
Removal of the Nacelle Anti-Ice Fan Case Thermocouple

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

WARNING: WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.

FIN: 4160KS ** 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 1M(3 FT)
No specific	AR	CAP - BLANKING
No specific	AR	COVER - PROTECTION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
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
Fan Case Thermocouple

3. Job Set-up
Subtask 30-21-24-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do 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 30-21-24-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the right fan cowl door (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 30-21-24-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Nacelle Anti-Ice Fan Case Thermocouple
(1) Remove the fan case thermocouple (1) 4001DD.
(a) Remove the three bolts (4), three washers (3) and three clamps (2) that attach the fan case thermocouple (1) to the electrical brackets on the fan case.
(b) Remove the two bolts (5) and two washers (6) that attach the thermocouple end of the fan case thermocouple (1) to the electrical bracket on the fan case.
(c) Disconnect the 4113VC-A electrical connector on the fan case thermocouple (1) from the connector on the fan case harness. Remove the fan case thermocouple (1).
(d) Put CAP - BLANKING on the 4113VC-A electrical connector and the connector on the fan case harness.
(2) Installation of the protection covers

CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that you install COVER - PROTECTION as necessary to prevent damage to the engine and adjacent components.

[Rev.10 from 2021] 2026.04.01 00:29:17 UTC