Installation of the PS12 Line [CFMB]

TASK 72-23-00-400-040-A
Installation of the PS12 Line

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )
No specific	Torque wrench: range to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 73-21-60-000-001-B	Removal of the Electronic Control Unit (ECU)
TASK 73-21-60-400-001-B	Installation of the Electronic Control Unit (ECU)
Removal/Installation of the PS12 Line

3. Job Set-up
Subtask 72-23-00-860-065-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) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.

Subtask 72-23-00-010-104-A ** ON A/C NOT FOR ALL

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

Subtask 72-23-00-020-073-A ** ON A/C NOT FOR ALL

C. Make sure that the Electronic Control Unit (ECU) is removed (Ref. AMM TASK 73-21-60-000-001).

4. Procedure
Subtask 72-23-00-420-066-A ** ON A/C NOT FOR ALL

A. Installation of the PS12 Line

CAUTION: USE 2 WRENCHES TO REMOVE/INSTALL THE TUBE UNION NUT: ONE TO HOLD THE FITTING, THE OTHER TO LOOSE/TORQUE THE NUT. OTHERWISE, DAMAGE TO THE HARDWARE CAN OCCUR.

(1) Install the PS12 line (20) in position on the engine.
(2) Lubricate the threads of the fan frame bosses with engine fuel.
(3) Connect the PS12 line to the 3 fan frame bosses.
(4) Tighten the connecting nuts by hand.
(5) Lubricate the threads of the bolts with graphite grease (Material No.CP2101) .
(6) Install the parts which attach the PS12 line as follows:

INSTALL	ON	NOTE
Bolt (10) Nut (30)	Bracket (40) on flange G	At the 5 o'clock position (Detail C)
Clamp (60) Bolt (50) Nut (70)	Bracket (80) on flange E	At the 4:45 o'clock position (Detail D)
Clamp (100) Bolt (90) Nut (110)	Bracket (120) on flange C	At the 4:30 o'clock position (Detail D)
Bolt (130) Nut (150)	Bracket (140) on flange C	At the 4 o'clock position (Detail F)
Clamps (160) Bolts (190) Nuts (180)	Brackets (170) on flange C	From the 3:30 o'clock to the 1:45 o'clock positions (Detail G) (5 locations)
Clamps (210) Bolts (200) Nuts (230)	Bracket (220) on flange C	From the 1 o'clock to the 8:15 o'clock positions (Detail H) (12 locations)
Bolt (240) Nut (260)	Bracket (250) on flange C	At the 11:45 o'clock position (Detail J)
Bolt (270) Nut (290)	Bracket (280) on flange C	At the 8 o'clock position (Detail K)

(7) Distribute the slack all along the line.
(8) TORQUE the nuts (30), (70), (110), (150), (180), (230), (260), (290) to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )

.
(9) Torque the fan frame bosses. See sheet 7 of the figure

Removal/Installation of the PS12 Line ** ON A/C NOT FOR ALL

CAUTION: BEFORE YOU TIGHTEN THE NUTS OF PS12 TUBES ON THE FAN FRAME BOSSES, MAKE SURE THE TUBES ARE NOT STRESSED AND THE ELBOW ORIENTATION IS CORRECT.

(a) TORQUE the fan frame bosses to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(10) Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

NOTE: The PS3 and the PS12 connecting nuts are safetied together.

5. Close-up
Subtask 72-23-00-420-079-A ** ON A/C NOT FOR ALL

A. Install the ECU (Ref. AMM TASK 73-21-60-400-001).

Subtask 72-23-00-410-096-A ** ON A/C NOT FOR ALL

B. Close Access
(1) 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
(2) Remove the WARNING NOTICE(S).
Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:41:42 UTC