W DOC AIRBUS | AMM A320F

Dry out and Cleaning of the PS3 Line [CFMI]

TASK 72-00-00-280-001-A
Dry out and Cleaning of the PS3 Line

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 1M(3 FT)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ) T
No specific
Torque wrench: range to between 150 and 135 lbf.in (1.70 and 1.53 m.daN ) T
No specific
Torque wrench: range to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) T
 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, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR
 D. Referenced Information
REFERENCE
DESIGNATION
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 78-30-00-081-041-A
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A
Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A
Closing of the Thrust Reverser Doors
F Inspection/Check of the PS3 Line
3. Job Set-up
Subtask 72-00-00-941-061-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) On the center pedestal, on the ENG panel 115VU:
     (a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
   (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
   (3) On the overhead maintenance panel 50VU:
     (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 72-00-00-010-067-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
   (2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
   (4) Put the ACCESS PLATFORM 1M(3 FT) in position.
Subtask 72-00-00-040-057-A ** ON A/C NOT FOR ALL
C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 72-00-00-010-068-A ** ON A/C NOT FOR ALL
D. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
   (1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
   (2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
4. Procedure
Subtask 72-00-00-280-056-A ** ON A/C NOT FOR ALL
A. Dry out and Cleaning of the PS3 Line
   (1) Cut and remove the lockwires.
   (2) Disconnect the PS3 hose (30) from the ECU and from the PS3 tube (20).
   (3) Disconnect the PS3 tube (110) from the core engine as follows:
     (a) Remove the 2 nuts (130), the 2 bolts (100) and the 2-holes clamp (140) which attach the PS3 tube (110) to the bracket (120), on flange P, at the 8 o'clock position (Detail E).
     (b) Cut and remove the lockwires.
     (c) Disconnect the PS3 tube (110) from the reducer (150).
     (d) Remove the reducer (150) from the combustion case.
   (4) Check the hose (30) for blockage. If any blockage is found, replace the hose (30).
   (5) Blow clean dry air into the PS3 tube (20) end to remove any dirt or water accumulation in the PS3 line.
Subtask 72-00-00-420-053-A ** ON A/C NOT FOR ALL
B. Installation of the PS3 Line
CAUTION: DURING INSTALLATION, MAKE SURE THAT THE PS3 LINE DOES NOT TOUCH THE LOWER STARTER DUCT OR OTHER PARTS IN THIS AREA. IF IT DOES, CHAFING OF THE PS3 HOSE CAN OCCUR.
   (1) Install the reducer (150) on the combustion case recess.
   (2) TORQUE the reducer (150) to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) T.
   (3) Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
   (4) Connect the PS3 tube (110) to the reducer (150) on the core engine.
   (5) TORQUE the connecting nut to between 150 and 135 lbf.in (1.70 and 1.53 m.daN ) T.
   (6) Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
   (7) Lubricate the threads of the bolts (100) with graphite grease (Material No.CP2101) .
   (8) Install the clamp (140), the bolts (100) and the nuts (130) to attach the PS3 tube (110) to the bracket (120), on flange P, at the 8 o'clock position (Detail E).
   (9) TORQUE the nut (130) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ) T.
   (10) Lubricate the ECU and PS3 tube (20) nipples with engine fuel.
   (11) Connect the PS3 hose (30) to the ECU and to the PS3 tube (20).
   (12) TORQUE the PS3 hose connecting nuts to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) T.
   (13) Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
5. Close-up
Subtask 72-00-00-410-067-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 thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
     (b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 72-00-00-440-057-A ** ON A/C NOT FOR ALL
B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 72-00-00-410-068-A ** ON A/C NOT FOR ALL
C. 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 access platform(s).
   (3) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.02 06:33:37 UTC
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