Installation of the Identification Connector [CFMI]

TASK 73-21-90-400-001-A
Installation of the Identification Connector

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

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1041)	isopropyl alcohol
(Material No.CP2338)	brisal-OX

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
40	LEAD SEAL	AIPC 73-21-90-01-050

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 31-36-00-740-005-A	Update of the Engine Hours and Cycles in the DMU after Engine or DMU Replacement
TASK 31-36-00-740-014-A	Update of the Engine Hours and Cycles in the Flight Data Interface and Management Unit (FDIMU)
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 73-21-60-400-001-A	Installation of the Electronic Control Unit (ECU)
TASK 73-21-60-720-040-A	Functional Test of the Electronic Control Unit (ECU)
LRU Identification ** ON A/C NOT FOR ALL
LRU Identification ** ON A/C NOT FOR ALL
LRU Identification ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 73-21-90-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 73-21-90-010-051-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 73-21-90-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Identification Connector
(1) Install the appropriate Electronic Control Unit (ECU) identification connector (refer to SB CFM56-5 72-080, 72-246 and 72-318) as follows:
(a) Clean the mating surfaces of identification connector terminal lug, washer (30) and of flange D, at hole No.43, with isopropyl alcohol (Material No.CP1041) .
(b) Apply a light coat of brisal-OX (Material No.CP2338) to the cleaned mating surfaces.

NOTE: Brisal-OX is a conductive grease.

(c) Attach the identification connector as follows:
1 Put the terminal lug against the rear surface of flange D, at hole No.43.
2 Install the bolt (10), washer (30) and nut (20). Tighten nut (20) by hand.
3 TORQUE the nut (20) to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

.
(d) Install a lead seal:

CAUTION: THE INSTALLATION AND STAMPING OF THE LEAD SEAL MUST BE DONE WITH THE QUALITY ASSURANCE MARK OF THE AIRLINE

1 Install a new AIPC 73-21-90-01-050 LEAD SEAL (40) between the bolt (10) on flange D, and the bolt on flange E.
(e) Install the ECU (Ref. AMM TASK 73-21-60-400-001).

Subtask 73-21-90-942-050-A ** ON A/C NOT FOR ALL

B. Remove the WARNING NOTICE(S).

Subtask 73-21-90-861-050-A ** ON A/C NOT FOR ALL

C. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 73-21-90-740-051-A ** ON A/C NOT FOR ALL

D. Update the engine hours and cycles (Ref. AMM TASK 31-36-00-740-005) or (Ref. AMM TASK 31-36-00-740-014).

NOTE: Some tasks will possibly not be applicable depending on whether a DMU or an FDIMU is installed on the aircraft.

Subtask 73-21-90-869-050-A ** ON A/C NOT FOR ALL

E. On the left or right MCDU, get the SYSTEM REPORT/TEST page (Ref. AMM TASK 31-32-00-860-012).

Subtask 73-21-90-710-050-A ** ON A/C NOT FOR ALL

F. Do this test
(1) On the left or right MCDU, do this check:
(a) Get access to the screen of the SYSTEM REPORT/TEST ENG (Ref. AMM TASK 31-32-00-860-012).
(b) Push the line key adjacent to the FADEC1(2) A(B): The ENGINE MAIN MENU page comes into view.
(c) Do a functional test of the ECU (Ref. AMM TASK 73-21-60-720-040).
(d) Push the line key adjacent to the LRU IDENT indication: the LRU IDENTIFICATION ENGINE 1(2) CHANNEL A(B) page comes into view

LRU Identification ** ON A/C NOT FOR ALL

NOTE: The LRU identification check is only required on one channel of the ECU A or B.

1 Read the data that comes on the MCDU screen and check for consistency with the actual engine configuration:
a "LRU PART NO" (ECU Part Number):

The P/N is available on the ECU identification plate.

b "ENGINE FAMILY" (Engine thrust rating and type):

These inputs are available on the engine name plate.

NOTE: The engine thrust rating must be the same as on opposite engine and consistent with the Aircraft Model.

c "BUMP STATUS" option:

"0" = Not installed/Not used,
"1" = Denver Bump,
"2" = General Bump,
"3" = Air France Bump (overboost).

d "PMUX INSTALLED" option:

PMUX engine (4 hoses connected to the ECU) must read "Y",
Non PMUX engine (2 hoses connected to the ECU) must read "N".

Subtask 73-21-90-710-050-B ** ON A/C NOT FOR ALL

F. Do this test:
(1) On the left or right MCDU, do this check:
(a) Get access to the screen of the SYSTEM REPORT/TEST ENG (Ref. AMM TASK 31-32-00-860-012).
(b) Push the line key adjacent to the FADEC1(2) A(B): The ENGINE MAIN MENU page comes into view.
(c) Do a functional test of the ECU (Ref. AMM TASK 73-21-60-720-040).
(d) Push the line key adjacent to the LRU IDENT indication: the LRU IDENTIFICATION ENGINE 1(2) CHANNEL A(B) page comes into view

LRU Identification ** ON A/C NOT FOR ALL

NOTE: The LRU identification check is only required on one channel of the ECU A or B.

1 Read the data that comes on the MCDU screen and check for consistency with the actual engine configuration:
a "LRU PART NO" (ECU Part Number):

The P/N is available on the ECU identification plate.

b "ENGINE RATING" (Engine thrust rating and type):

These inputs are available on the engine name plate.

NOTE: The engine thrust rating must be the same as on opposite engine and consistent with the Aircraft Model.

c "BUMP RATING" option:

"0" = Not installed/Not used,
"1" = Denver Bump,
"2" = General Bump,
"3" = Air France Bump (overboost).

d "PMUX INSTALLED" option:

PMUX engine (4 hoses connected to the ECU) must read "Y"
Non PMUX engine (2 hoses connected to the ECU) must read "N".

e "Engine" (Engine Serial Number)

Make sure the "Engine" S/N displayed on the screen is the same as the one written on the engine name plate.

NOTE: For CFM56-5A1 or CFM56-5A1/F or CFM56-5A3: if a Pre Service Bulletin 72-518 engine identification connector is installed (P/N 320-586-XXX-0), the ESN (Engine Serial Number) is automatically entered into the ECU memory through a specific programming of the identification connector.

Subtask 73-21-90-862-050-A ** ON A/C NOT FOR ALL

G. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

5. Close-up
Subtask 73-21-90-410-050-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 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR

[Rev.10 from 2021] 2026.04.01 02:57:03 UTC