Removal of the Fuel Cooled Oil Cooler Fuel Temperature Thermocouple [IAE]

TASK 73-35-15-000-010-B
Removal of the Fuel Cooled Oil Cooler Fuel Temperature Thermocouple

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

WARNING: DO NOT TOUCH THE FUEL OR OIL SYSTEM COMPONENTS FOR A SHORT TIME AFTER THE ENGINE IS SHUT DOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.

CAUTION: DO NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

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	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
Fuel Temperature Thermocouple
Fuel Temperature Thermocouple - SBE 73-0071

3. Job Set-up
Subtask 73-35-15-941-051-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 73-35-15-010-052-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.

4. Procedure
Subtask 73-35-15-680-051-A ** ON A/C NOT FOR ALL

A. Drain the Fuel Cooled Oil Cooler (FCOC).
(1) Remove the wire (7) from the drain plug (5).
(2) Remove the fuel drain plug with sealing ring (6) and drain the fuel in to the clean CONTAINER 10 L(2 1/2 USGAL)
(3) Discard the sealing ring.

Subtask 73-35-15-020-051-A ** ON A/C NOT FOR ALL

B. Disconnection of electrical connector from the FCOC.

PRE SBE 71-0183
PRE SBE 73-0071

(1) Disconnect the electrical connector (2) from the FCOC fuel temperature thermocouple.

Fuel Temperature Thermocouple ** ON A/C NOT FOR ALL

Subtask 73-35-15-020-052-A ** ON A/C NOT FOR ALL

C. Disconnection of electrical connector 4017KS-A.

SBE 71-0183: Powerplant - Electrical harnesses - Introduction of production standard EEC harness to suit FCOC fuel temperature thermocouple with stud type thermocouple.
SBE 73-0071: Fuel and Control - Replacement of fuel temperature thermocouple with stud and nut terminations.

(1) Disconnect the electrical connector (2) 4017KS-A.

Fuel Temperature Thermocouple - SBE 73-0071 ** ON A/C NOT FOR ALL

(a) If the themocouple is not to be removed, remove and install the two thermocouple securing bolts (3) one at a time.
(b) Remove the two bolts (3) that secure the thermocouple. Disconnect the harness ground connectors and refit the two bolts (3).
(c) Remove the two nuts (8) and the two nuts (9) and disconnect the terminals of electrical connector (2).

Subtask 73-35-15-020-053-A ** ON A/C NOT FOR ALL

D. Remove the thermocouple from the FCOC.

Fuel Temperature Thermocouple ** ON A/C NOT FOR ALL

(1) Remove the two bolts (3) that attach the thermocouple to the FCOC.
(2) Remove the thermocouple (1) with the ring (4).
(3) Discard the ring.
(4) Install covers to all exposed openings.

[Rev.10 from 2021] 2026.04.01 03:01:44 UTC