W DOC AIRBUS | AMM A320F

Replacement of the Bonded Seal on the Axial Junction-Shroud Fitting [CFML]

TASK 72-24-06-960-801-A
Replacement of the Bonded Seal on the Axial Junction-Shroud Fitting

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.
WARNING: USE PROTECTIVE GLOVES TO PREVENT INJURY FROM SHARP EDGES AND ROUGH SURFACES.
WARNING: DO NOT LET TITANIUM DUST COLLECT. DISCARD ALL TITANIUM WASTE IN AN APPROVED CONTAINER. TITANIUM DUST IS EXTREMELY FLAMMABLE.
WARNING: DO NOT USE WATER TO EXTINGUISH A TITANIUM FIRE. EXTINGUISH WITH AN APPROVED CHEMICAL FOR METAL FIRES.
WARNING: DO NOT USE HALOGEN PRODUCTS. TITANIUM ALLOY PARTS REACT TO CHLORINATED HYDROCARBONS. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS CAN OCCUR.
CAUTION: WHEN YOU PROCESS TITANIUM PARTS, DO NOT USE TOOL FIXTURE DETAILS MADE OF OR COATED WITH CADMIUM, BISMUTH, TIN, ZINC, GOLD OR SILVER. IF YOU DO, THESE MATERIALS CAN HAVE AN UNWANTED EFFECT ON THE TITANIUM PARTS.
CAUTION: DO NOT USE TOOLS OR CONSUMABLE PRODUCTS THAT WERE USED TO MIX MATERIALS OTHER THAN TITANIUM. IF YOU DO NOT OBEY THIS PRECAUTION, YOU CAN CAUSE CONTAMINATION OF THE TITANIUM.
CAUTION: WHEN YOU USE POWER TOOLS, MAKE SURE THAT YOU DO NOT CAUSE HEAT THAT WILL RESULT IN THERMAL STRESS. THERMAL STRESS CAN CAUSE ENGINE FAILURE.
ZONE: 210
ZONE: 400
1. Reason for the Job
This repair procedure gives instructions to replace the bonded seal on the axial shroud junction fitting.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
AIR SOURCE FILTERED, DRY
No specific
AR
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP1039)
acetone
(Material No.CP1041)
isopropyl alcohol
(Material No.CP2242)
RTV 732
(Material No.CP2266)
RTV 102
(Material No.CP2699)
Panasolve Plus
(Material No.CP2734)
RTV103
(Material No.CP2772)
abrasive cloth
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400
POWER PLANT, NACELLES AND PYLONS
 D. Referenced Information
REFERENCE
DESIGNATION
SPM 702111
SPM 706612
F Bonded Seal on the Axial Junction-Shroud Fitting
3. Job Set-up
Subtask 72-24-06-941-053-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) Put a WARNING NOTICE(S) 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) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
4. Procedure
Subtask 72-24-06-220-050-A
A. Dimensional Information

Table 801 - Dimensional Information

Description
Minimum In-Process Dimension
Maximum In-Process Dimension
Minimum Finish Dimension
Maximum Finish Dimension
Reference Dimension
DIM A



0.0331 in. (0.84 mm)
DIM B



0.0724 in. (1.84 mm)
Subtask 72-24-06-960-050-A
B. Remove the seal as follows:
CAUTION: REMOVE THE SEAL CAREFULLY TO PREVENT DAMAGE TO THE PART.
CAUTION: WHEN YOU DO THIS PROCEDURE, BE CAREFUL NOT TO REMOVE THE ANODIZED LAYER OF THE ALUMINUM PARTS.
   (1) Remove completely the seal.
   (2) Remove the remaining bonded material from the part. Immerse the part in the stripping agent Panasolve Plus (Material No.CP2699) .
Subtask 72-24-06-120-050-A
C. Prepare the area to be bonded.
   (1) Make the surfaces (metallic part and seal) to be bonded rough with an abrasive cloth (Material No.CP2772) .
NOTE: You can use acetone (Material No.CP1039) to make rough the surface of the seal.
   (2) Clean the metallic part area and the seal to be bonded with a clean cloth soaked in isopropyl alcohol (Material No.CP1041) only SPM 702111.
   (3) Dry the surfaces.
WARNING: WHEN YOU USE COMPRESSED AIR:
  • USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
  • DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS
  • DO NOT LET THE PRESSURE BE MORE THAN 30 PSIG (200 KPA).
LOOSE PARTICLES AND/OR HIGH PRESSURE AIR CAN CAUSE INJURY.
     (a) Blow the surfaces (metallic part and seal) to be bonded with an oil-free AIR SOURCE FILTERED, DRY.
Subtask 72-24-06-210-051-A
D. Do a visual inspection of the area where you will bond the new seal.
   (1) The deviations below are not permitted:
     (a) Fretting, erosion, wear
     (b) Nicks, scratches, cracks
     (c) Dents.
Subtask 72-24-06-960-051-A
E. Rebond the seal SPM 706612 and the instructions that follow:
NOTE: As an alternative to RTV 732 (Material No.CP2242) , you can use RTV 102 (Material No.CP2266) or RTV103 (Material No.CP2734) .
NOTE: You must respect the following conditions:
  • Temperature above 58 deg.F (14.44 deg.C)
  • Humidity between 40 percent and 70 percent.
   (1) The adhesive coating thickness must be 0.008 in. (0.20 mm) maximum. If necessary, equalize overflow of adhesive.
   (2) Do a dimensional inspection (See the sheet 2 of the figure and refer to Para. 4.A.).
5. Close-up
Subtask 72-24-06-942-050-A
A. Put the aircraft back to its initial configuration.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 02:53:02 UTC
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