Removal of the Maintenance Interphone Jack

TASK 23-44-41-000-003-A
Removal of the Maintenance Interphone Jack

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 210
ZONE: 410
ZONE: 420
ZONE: 430
ZONE: 440
FIN: 4000RJ1 ** ON A/C NOT FOR ALL
FIN: 4000RJ2 ** 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	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING
430	ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX
440	ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX

C. Referenced Information

REFERENCE	DESIGNATION
Air Intake-Cowl Interphone-Jack
Air Intake-Cowl Interphone-Jack
Air Intake-Cowl Interphone-Jack

3. Job Set-up
Subtask 23-44-41-865-050-A ** ON A/C NOT FOR ALL

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 101RH (DIRCIDS, 1)
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR1 ESS	15WH	C05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DIR 1/BAT	147RH	P13
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/1	17WH	T17
** ON A/C NOT FOR ALL
FOR FIN: 102RH (DIRCIDS, 2)
49VU	COM/CIDS/DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DIR ESS/1	150RH	G01
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR2 ESS	18WH	C06
** ON A/C NOT FOR ALL
49VU	COM DIR ESS/2	157RH	G02
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M06
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M05
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DIR NORM/2	156RH	M07
121VU	COM NAV/CIDS/DIR NORM/1	151RH	M06
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DIR 2/BAT	146RH	P14
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/2	14WH	T18

Subtask 23-44-41-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On the panel 115VU:

Put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).

(2) Make sure that the engine 1(2) has been shutdown for at least 5 minutes.
(3) On the panel 50VU:

Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off.
Install a WARNING NOTICE(S).

Subtask 23-44-41-941-050-A ** ON A/C NOT FOR ALL

C. Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position to give access to the air intake cowl.

4. Procedure
Subtask 23-44-41-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Maintenance Interphone Jack
BEFORE SPIB CFM02189MW1
(1) Remove the screws (55) that attach the cover (60) to the air intake cowl.
(2) Pull the cover (60) and interphone jack assembly from the air intake cowl.
(3) Remove the screws (50) that hold the mounting plate (35), shell (25) and retainer (20) on the cover (60).

AFTER SPIB CFM02189MW1 and AFTER SPIB CFM16161PC1
(4) Remove the screws (105) and (110) that attach the anti-ice vent panel to the air intake-cowl.
(5) Remove the anti-ice vent panel.
END AFTER SPIB CFM16161PC1
(6) Remove the screws (50) that hold the mounting plate (35), shell (25) and retainer (20) on the air intake-cowl.
(7) Get access to the interphone jack assembly through the anti-ice vent opening.
END AFTER SPIB CFM02189MW1

BEFORE and AFTER SPIB CFM02189MW1
(8) Loosen the coupling nut (5) and remove it from the shell (25).
(9) Move the coupling nut (5), the two pressure plates (10) and the gland (15) to the rear, away from the phone jack.
(10) Remove the nut (45) and the lockwasher (40) that hold the phone jack on the mounting plate (35).
(11) Remove the screws (80), washers (75), lockwashers (70) and nuts (65) that connect the electrical wires to the interphone jack (30).
(12) Disconnect the electrical wires from the interphone jack (30).
(13) Remove the interphone jack (30) from the wire harness.
(14) Install COVER - PROTECTION on the interphone jack (30), and isolate the wires.
END SPIB CFM02189MW1

AFTER SPIB CFM16161PC1
(15) Remove the screws (50) that hold the mounting plate (35) and the retainer (55) on the air intake-cowl.
(16) Remove the nut (45) and the lockwasher (40) that hold the interphone jack harness assembly (80) on the mounting plate (35).
(17) Get access to the interphone jack harness assembly (80) through the anti-ice vent panel opening.
(18) Remove the nuts (20), washers (15) and bolts (10) that attach the connector of the interphone jack harness assembly (80) to the air intake-cowl.
(19) Remove the nut (60), washers (65) and (70) and bolt (75) from the flip lock clamp (30).
(20) Open the flip lock clamp (30).
(21) Remove the screws (115) that attach the support plate (120) to the air intake-cowl.
(22) Remove the nut (85) and the washers (90) that attach the ground jack (100) to the support plate (120).
(23) Remove the ground jack (100) from the air intake cowl.
(24) Remove the interphone jack harness assembly (80) from the retainer (55).
(25) Install COVER - PROTECTION on the interphone jack harness assembly (80) and the ground jack (100).
END AFTER SPIB CFM16161PC1

[Rev.10 from 2021] 2026.04.02 06:12:14 UTC