Installation of the PS3 Line [CFML]

TASK 73-21-75-400-801-A
Installation of the PS3 Line

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.

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

ZONE: 436
ZONE: 446

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	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN )
No specific	Torque wrench: range to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil
(Material No.CP8006)	safety cable 0.032 in. (0.8 mm) dia.

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
436	FAN AND ACCESSORY GEARBOX
446	FAN AND ACCESSORY GEARBOX
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
PS3 Line

3. Job Set-up
Subtask 73-21-75-941-051-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 73-21-75-010-051-A

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

4. Procedure
Subtask 73-21-75-420-050-A

A. Installation of the PS3 Line

PS3 Line

(1) Remove the COVER - PROTECTION and the CAP - PROTECTION from all the openings, tubes, hoses and connectors.
(2) Lubrication of the coupling nuts threads

WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.

(a) Lubricate the threads of the two coupling nuts (2) of the PS3 line (1) with engine oil (Material No.CP2442) .
(3) Install the five clamps (5), (8), (10), (12) and (14) on the PS3 line (1).
(4) Install the PS3 line (1) in the correct position.
(5) Install the bolt (4) and the nut (3) on the clamp (5) and tighten them with your hand.
(6) Install the bolt (7) and the nut (6) on the clamp (8) and tighten them with your hand.
(7) Install the bolt (9) on the clamp (10) and tighten it with your hand.
(8) Install the bolt (11) on the clamp (12) and tighten it with your hand.
(9) Install the bolt (13) on the clamp (14) and tighten it with your hand.
(10) Connect the coupling nut (2) of the PS3 line (1) to the pressure sub-system box-nipple (16) and tighten it with your hand.
(11) Connect the coupling nut (2) of the PS3 line (1) to the air duct (15) and tighten it with your hand.
(12) Torquing of the coupling nuts

CAUTION: USE TWO WRENCHES TO LOOSEN OR TIGHTEN THE COUPLING NUT. USE ONE WRENCH TO HOLD THE FITTING AND THE OTHER TO LOOSEN OR TIGHTEN THE COUPLING NUT. IF YOU DO NOT USE TWO WRENCHES, DAMAGE TO THE EQUIPMENT CAN OCCUR.

(a) TORQUE the two coupling nuts (2) to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(13) Safety the coupling nuts (2).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Attach the first coupling nut (2) to the pressure sub-system box (16) with CP8006safety cable 0.032 in. (0.8 mm) dia..
(b) Attach the second coupling nut (2) to the air duct (15) with CP8006safety cable 0.032 in. (0.8 mm) dia..
(14) TORQUE the three bolts (9), (11) and (13) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN )

.
(15) TORQUE the two nuts (3) and (6) to between 46.2 and 41.8 lbf.in (0.52 and 0.47 m.daN )

5. Close-up
Subtask 73-21-75-410-050-A

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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:05:47 UTC