W DOC AIRBUS | AMM A320F

Inspection/Check of the PS3 Line [CFMB]

TASK 72-00-00-200-026-A
Inspection/Check of the PS3 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
WARNING NOTICE(S)
No specific
AR
WIRE - PLASTIC
No specific
Torque wrench: range to between 55 and 50 lbf.in (0.62 and 0.57 m.daN ) T
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.CP1039)
acetone
(Material No.CP1041)
isopropyl alcohol
(Material No.CP2011)
stoddard solvent
(Material No.CP2101)
graphite grease
(Material No.CP2559)
ardrox 552
(Material No.CP2560)
turco ind 79
(Material No.CP2566)
mag-chem teksol
(Material No.CP2584)
degreasol 99 R
(Material No.CP2656)
mag-chem skysol
(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 36-11-49-000-044-A
Removal of the High Pressure Tee Duct
TASK 36-11-49-400-044-A
Installation of the High-Pressure Tee Duct
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 78-30-00-081-041-B
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B
Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B
Closing of the Thrust Reverser Doors
F PS3 Line
3. Job Set-up
Subtask 72-00-00-941-072-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 72-00-00-010-086-A ** ON A/C NOT FOR ALL
B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
   (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-00-00-040-122-A ** ON A/C NOT FOR ALL
C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 72-00-00-010-245-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
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.
Subtask 72-00-00-210-068-A ** ON A/C NOT FOR ALL
A. Visual Inspection of the PS3 Line
   (1) Inspect the PS3 line as follows:
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.The tubes for:


  • cracks
Not serviceable
Replace the tube
  • dents
4 per lineal foot, spaced at least 1 in. (25,4 mm) apart, provided depth of each dent does not exceed 20 percent of tube outer diameter for straight section or 10 percent of tube outer diameter for bend section

  • flat areas
Length shall not be greater than 3 times the tube outer diameter, and contour change shall not exceed 20 percent of tube outer diameter for straight section or 10 percent of tube outer diameter for bend section

  • nicks, scratches
0.005 in. (0,13 mm) max. depth

The hose for:


  • broken hose braid
3 broken wires per plait, and no more than 6 broken wires per assembly, or per lineal 12 in. (305 mm) of hose

  • chafing on hose
Not serviceable
Replace the hose
  • crimps
Not serviceable
Replace the hose
  • cuts, tears, chafing on fire sleeves
Any number, provided maximum depth does not exceed one-half of sleeve thickness

Subtask 72-00-00-280-063-A ** ON A/C NOT FOR ALL
B. Dry out and Cleaning of the PS3 Line
   (1) Cut and remove the lockwire.
   (2) Disconnect the PS3 hose (20) from the ECU.
   (3) Disconnect the PS3 tube from the core engine as follows:
     (a) If necessary, get access to the PS3 restrictor: Remove the High Pressure Tee Duct (Ref. AMM TASK 36-11-49-000-044).
     (b) Remove the nut (160), the bolt (190) and the clamp (180) which attach the PS3 tube (170) to the bracket (150), on flange P, at the 8 o'clock position (Detail F).
     (c) Cut and remove the lockwires.
     (d) Disconnect the PS3 tube (170) from the restrictor (200).
     (e) Remove the restrictor from the engine.
   (4) Cut and remove the lockwires.
   (5) Disconnect the PS3 hose (20) from the ECU and from the PS3 tube (10).
   (6) Check the hose for blockage blocked hose is not serviceable: replace the hose (20).
   (7) Blow clean dry air into the PS3 tube (10) end to remove any dirt or water accumulation in the PS3 line.
Subtask 72-00-00-020-052-A ** ON A/C NOT FOR ALL
C. Removal of the PS3 Line Connections
NOTE: Do the steps which follow only if you suspect leakage.
   (1) Cut and remove the lockwire which safeties the PS3 tube (10) to the tube bundle.
   (2) Disconnect the PS3 tube (10) from the tube bundle.
   (3) Remove the parts which attach the PS3 tube (10) to the engine as follows:
----------------------------------------------------------------------------
! REMOVE ! FROM ! NOTE !
!------------------------!--------------------------!----------------------!
!Nut (70) ! Bracket (40) and P25 ! At the 6:30 o'clock !
!Bolt (30) ! tube on flange G ! position (Detail C) !
!Outer spring clip (60) ! ! !
!Inner spring clip (50) ! ! !
!Plastic bushing (80) ! ! !
!------------------------!--------------------------!----------------------!
!Nut (130) ! Bracket (120) and P25 ! At the 5 o'clock !
!Bolt (90) ! on flange G ! position (Detail C) !
!Outer spring clip (100) ! ! !
!Inner spring clip (110) ! ! !
!Plastic bushing (140) ! ! !
----------------------------------------------------------------------------

   (4) Remove the PS3 tube (10) from the engine.
Subtask 72-00-00-210-069-A ** ON A/C NOT FOR ALL
D. Inspection of the PS3 Line Connection
   (1) Inspect the connecting parts as follows:
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Fitting nuts for:


  • damaged corners
Any amount, provided proper torque can be obtained

  • damaged threads
Any amount, provided effective threads are not reduced by more than one after chasing
Chase the threads
  • safetywire hole deformation and wear
Serviceable, provided metal around hole is not cracked or torn

2.Fittings and restrictor (200) seating surfaces for:


  • circumferential scratches
Any amount not detectable with a 0.04 in. (1 mm) radius ball scribe

  • axial scratches
Not serviceable
Replace the tube or the part
  • nicks, pits
Not serviceable
Replace the tube or the part
   (2) If necessary, clean the parts with: stoddard solvent (Material No.CP2011) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) or acetone (Material No.CP1039) or isopropyl alcohol (Material No.CP1041) .
   (3) If necessary, remove the dirt from the ECU nipple with a WIRE - PLASTIC. Take care to not introduce dirt into the ECU.
   (4) Check the tube bundle weep hole for clogging or dirt accumulation.
   (5) If necessary, clean the tube bundle weep hole with stoddard solvent (Material No.CP2011) or acetone (Material No.CP1039) or isopropyl alcohol (Material No.CP1041) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) and a WIRE - PLASTIC.
Subtask 72-00-00-420-056-A ** ON A/C NOT FOR ALL
E. 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 (200) on the core engine.
   (2) TORQUE the reducer 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 (170) to the reducer on 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 bolt (190) with graphite grease (Material No.CP2101) .
   (8) Install the clamp (180), the bolt (190) and the nut (160) which secure the PS3 tube (170) to the bracket (150) on flange M, at the 8 O'clock position (Detail F).
   (9) TORQUE the nut (160) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN ) T.
   (10) If necessary, install the High Pressure Tee Duct (Ref. AMM TASK 36-11-49-400-044).
   (11) Lubricate the threads of the tube bundle tube.
   (12) Connect the PS3 tube (10) to the tube bundle tube nipple by hand.
   (13) Install the parts which secure the PS3 tube (10) to the engine as follows:
INSTALL
ON
NOTE
Nut (70)
Bolt (30)
Outer spring clip (60)
Inner spring clip (50)
Plastic bushing (80)
Bracket (40) and P25
tube on flange G
At the 6:30 O'clock
position (Detail C)
Nut (130)
Bolt (90)
Outer spring clip (100)
Inner spring clip (110)
Plastic bushing (140)
Bracket (120) and P25
tube on flange G
At the 5 O'clock
position (Detail C)
   (14) TORQUE the PS3 tube (10) connecting nut to the tube bundle to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) T.
   (15) Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
   (16) TORQUE the nuts (70), (130) to between 55 and 50 lbf.in (0.62 and 0.57 m.daN ) T.
   (17) Lubricate the ECU and PS3 tube (10) nipples with engine fuel.
   (18) Connect the PS3 hose (20) to the ECU and to the PS3 tube (10).
   (19) TORQUE the PS3 hose connecting nuts to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) T.
   (20) 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 72-00-00-410-224-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 72-00-00-440-124-A ** ON A/C NOT FOR ALL
B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 72-00-00-410-086-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 WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 02:40:48 UTC
"Aviabrain" 2025