Installation of the Electronic Engine Control (EEC) [PW11]

TASK 73-21-01-400-801-A
Installation of the Electronic Engine Control (EEC)

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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400
FIN: 4000KS1 ** ON A/C NOT FOR ALL
FIN: 4000KS2 ** 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	1	PLIERS - JAWED, SOFT
No specific	Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )
No specific	Torque wrench: range to between 195 and 175 lbf.in (2.20 and 1.98 m.daN )
No specific	Torque wrench: range to between 225 and 200 lbf.in (2.54 and 2.26 m.daN )

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 22-97-00-710-001-A	Operational Test of the LAND CAT III Capability
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 73-21-00-710-807-A	Test No.6 - EEC Operation Test (Idle Test)
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
Electronic Engine Control (EEC)

3. Job Set-up
Subtask 73-21-01-941-051-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 73-21-01-010-051-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 1M(3 FT) is in position.

4. Procedure
Subtask 73-21-01-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the EEC

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

(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 COVER - PROTECTION as necessary to prevent damage to the engine.
(2) Do a check that the Data Storage Unit (DSU) data part number selected is compatible with the EEC. Refer to SB PW1000G-C-72-00-0001-00A-930A-D.
(3) Install the EEC (1) and connect the wiring harnesses as follows:
(a) Install the EEC (1) as follows. See figure

Electronic Engine Control (EEC) ** ON A/C NOT FOR ALL

(b) Align and install the EEC (1) to the EEC support brackets with the four bolts (3).
(c) TORQUE the four bolts (3) to between 195 and 175 lbf.in (2.20 and 1.98 m.daN )

.
(d) Attach the ground strap to the EEC (1) with the bolt (2).
(e) TORQUE the bolt (2) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

.
(f) Connect the tube (AS01) to the EEC (1). See figure

Electronic Engine Control (EEC) ** ON A/C NOT FOR ALL

(g) TORQUE the tube (AS01) B-nut to between 225 and 200 lbf.in (2.54 and 2.26 m.daN )

NOTE: Do not loosen the tube.

(h) TORQUE the tube (AS01) B-nut again to between 225 and 200 lbf.in (2.54 and 2.26 m.daN )

CAUTION: IF ONLY THE EEC WAS REPLACED, MAKE SURE THAT THE DATA STORAGE UNIT (DSU) INSTALLED ON THE ENGINE IS REINSTALLED IN THE REPLACEMENT EEC. IF YOU DO NOT OBEY THIS, ENGINE OPERATION MAY BE AFFECTED.

(7) Examine the assembly for foreign objects, damage and correct assembly.

5. Close-up
Subtask 73-21-01-410-050-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 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
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) 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 73-21-01-720-050-A ** ON A/C NOT FOR ALL

B. Tests
(1) Do the test N°6 - EEC - Idle test (Ref. AMM TASK 73-21-00-710-807).
(2) If the aircraft is operated in CAT III conditions, do the operational test of the LAND CAT III capability (Ref. AMM TASK 22-97-00-710-001).

[Rev.10 from 2021] 2026.04.01 03:02:43 UTC