TASK 72-41-11-200-001-B00 HPC Stage 3 - 8 Drum Disk - Examine, Inspection-001

DMC:V2500-A0-72-41-1101-00B-300A-C|Issue No:005.00|Issue Date:2019-05-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

V2500-A5

Common Information

TASK 72-41-11-200-001-B00 HPC Stage 3 - 8 Drum Disk - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

SERVICE BULLETIN

01-200

6A4900

01-200

6A5467

01-200

6A6473

01-200

6A7383

01-200

6A7384

01-200

6A7385

01-200

6A7401

01-200

6A7705

01-200

6A8316

01-200

6B1379

01-200

6B1380

01-200

6B1384

01-200

6B1385

01-200

6B1386

01-200

6B1387

01-200

6B1391

01-200

6B1392

01-200

6B1393

01-200

6B1404

01-200

6B1405

General

This TASK gives the procedure to examine the stages 3 to 8 HP compressor discs. For other parts of the Stages 3 to 8 HP compressor discs refer to TASK 72-41-11-200-000 (INSPECTION/CHECK-000).

Fig./item numbers in parenthesis in the procedure agree with those used in the IPC. Only the primary Fig./item numbers are used. For the service bulletin alpha variants refer to IPC.

The policy that is necessary for inspection is given in SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined.

All parts must be visually examined for damage, corrosion and wear. All defects that are not identified in this procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in Step. Do the test before the part is visually examined.

Do not discard any part until you are sure that there are no repairs available. Refer to the instructions in the repair before a discarded part is used again or over size parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a later date.

All parts must be examined to make sure that all the repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are in SPM.

All of the temporary marks made in this procedure must be removed before the component is assembled.

HP compressor stages 3 to 8 drum cleaning procedure:

For all standards of drum, an aqueous cleaning method can be used as necessary, but a nitric acid solution chemical cleaning process is mandatory to clean and remove the remaining potential silver from drums that have operated with any standard of silver coated nut in the stage 8 cavity.

Polythene or cotton gloves must be worn to prevent surface contamination from handling after cleaning process.

References

Refer to SPM for data on these items:

Definition of Damage, SPM TASK 70-02-02-350-501,

Record and Control of the Component Lives, SPM TASK 70-05-00-220-501,

Inspection of parts, SPM TASK 70-20-01-200-501.

Some data on these items is contained in this TASK. For more data on these items refer to SPM:

Method of Testing for Crack Indications,

Chemical Processes,

Surface Protection.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

If the removal of stage 6 and 7 vane path liners by nitric acid method is necessary, then the liner removal and drum cleaning processes must be combined to prevent unnecessary use of nitric acid cleaning process.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
GlovesLOCAL

Polythene or cotton

IAE 2R19883 Rotary table inspection device0AM53IAE 2R19883
IAE 2R19884 Adapter0AM53IAE 2R19884

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 02-005 ADHESIVE TAPE (MASKING)LOCALCoMat 02-005
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADELOCALCoMat 05-001
CoMat 06-030 NON AQUEOUS DEVELOPERLOCALCoMat 06-030

Spares

NONE

Safety Requirements

CAUTION

THE WORD FOCUS, SPECIFIED IN SUBTASK TITLES, INDICATES CRITICAL LOCATIONS ON COMPONENTS TO WHICH SPECIAL ATTENTION MUST BE GIVEN.

Procedure

    1. SUBTASK 72-41-11-110-138 Clean the HP Compressor Discs

      1. CAUTION

        POLYTHENE OR COTTON GLOVES MUST BE WORN TO PREVENT SURFACE CONTAMINATION OF THE COMPONENT FROM HANDLING AFTER CLEANING PROCESS.

        Prepare the part for cleaning.

        1. Drill to remove shank nuts.

        1. Repair, VRS6220 TASK 72-41-11-300-011 (REPAIR-011), SUBTASK 72-41-11-323-051.

        2. CAUTION

          IF THE PART IS PROCESSED WITHOUT MASK, THE COATING MUST BE REPLACED.

          NOTE

          Step gives the procedure to replace the removed shank nuts.

          Mask all metal sprayed or other plated coatings.

        1. Refer to SPM TASK 70-11-35-110-501.

      2. NOTE

        If the part has operated with any standard of silver coated nut (Pre SB 72-0596 and Post SB 72-0596) installed in the stage 8 cavity do TASK 72-41-11-110-001.

        NOTE

        If the part has never operated with any standard of silver coated nut (Pre SB 72-0596 and Post SB 72-0596) installed in the stage 8 cavity do TASK 72-41-11-100-001-A00 or TASK 72-41-11-100-001-B00.

        Clean the part. Refer to TASK 72-41-11-100-001 (CLEANING) or TASK 72-41-11-110-001 (SPECIAL PROCEDURE).

      1. Make sure that all fluid traps and internal cavities are dry. Drain with a syphon tube as necessary.

      3. Examine drum inner cavities.

        1. Visually examine using white light source and mirror.

          1. If the part is clean.

          1. Continue with Step.

          2. If there is oxidation scale or mineral deposits.

          1. Do the Step chemical cleaning process again, one time only.

          3. If oxidation scale or mineral deposits cannot be removed in Step.

          1. Reject the part and contact IAE Technical Services.

    2. SUBTASK 72-41-11-230-117 Do a General Inspection on Stages 3 to 8 HP Compressor Discs for Cracks

    1. CAUTION

      YOU MUST MAKE SURE ALL THE TAPE IS REMOVED AFTER THE INSPECTION.

      NOTE

      Use fluorescent penetrant inspection SPM TASK 70-23-04-230-501 or NMSB 72-0637. Using NMSB 72-0637 will earn longer ultrasonic inspection grace periods. Refer to NMSB 72-0637 for detail of grace periods.

      NOTE

      Use ultra high sensitivity fluorescent penetrant, for the inspection of all the components and for focus inspection of specified areas in this SUBTASK.

      2. Do a visual inspection of stage 8 HP compressor disc inner cavity profile, Location 10. Use white light source to illuminate and examine with mirror or borescope.

        1. Pitted.

        1. Reject.

      3. NOTE

        Optimum emulsification time is to be found by trial. It is recommended to use water filled stop bath to end the emulsification process. Refer to SPM TASK 70-23-04-230-501, SUBTASK 70-23-04-230-003. Do a water wash and use suction hose to remove pooled liquid from cavities.
        After wash and drying operation, apply CoMat 02-005 ADHESIVE TAPE (MASKING) to the remaining ceramic liners. The mask will prevent glare during inspection, from fluorescent penetrant which soaks into the ceramic.
        Use high intensity Ultra Violet (UV) light source with correct UV light guide to illuminate the inner cavities and examine with mirror or borescope. If it is difficult to apply sufficient dry powder developer in the inner cavities, then apply CoMat 06-030 NON AQUEOUS DEVELOPER to get the necessary inner surface coverage. Use IAE 2R19883 Rotary table inspection device and IAE 2R19884 Adapter to rotate the drum and to get the necessary wet surfaces in the inner cavity (NMSB 72-0637).

        Do a general crack test. Refer to SPM TASK 70-23-04-230-501.

        NOTE

        Use IAE 2R19883 Rotary table inspection device and IAE 2R19884 Adapter or equivalent inspection equipment for fluorescent penetrant inspection of internal surfaces (NMSB 72-0637). Refer to Figure.

        1. Do a overall crack inspection of HP compressor stages 3 to 8 drum.

          1. Cracked.

          1. Reject.

      2. Deleted.

    4. Deleted.

  3. SUBTASK 72-41-11-230-120 Focus Inspection of the Stages 3 to 8 HP Compressor Discs for Cracks

    Inspect according to TASK 72-41-11-230-002, Subtask 72-41-11-230-104.

    4. SUBTASK 72-41-11-220-075 Examine the Stages 3 to 8 HP Compressor Discs for Damage

      1. NOTE

        The damage in the general areas are not specified by the specific inspection Locations.

        Nicked/Dented/Scratched/Scored.

        1. General nicks, dents, scratches or scores not more than 0.002 in. (0.05 mm).

        1. Accept.

        2. More than Step.

        1. Reject.

      2. Weld spatter.

        1. Inner cavity weld spatter.

        1. Accept.

    5. SUBTASK 72-41-11-220-076 Examine the Curvic Teeth at Location 1

    1. Refer to Figure.

      2. Galled.

        1. Within the limits of VRS6006.

        1. Repair, VRS6006 TASK 72-41-11-300-001 (REPAIR-001).

        2. More than in Step.

        1. Reject.

    6. SUBTASK 72-41-11-220-077 Examine the Curvic Coupling Sealing Sleeve at Location 2

    1. Refer to Figure and Figure.

      2. Nicked/Dented/Scratched/Scored

      1. Repair, VRS6132 TASK 72-41-11-300-008 (REPAIR-008).

      3. Examine the lining.

        1. Worn.

          1. If the bore of the sealing sleeve, (dimension A), is between 6.299 in. and 6.304 in. (160.00 mm and 160.12 mm).

          1. Accept.

          2. More than 6.304 in. (160.12 mm).

          1. Reject.

        2. Damaged.

          1. Lining that is not there.

          1. Reject.

    7. SUBTASK 72-41-11-220-079 Examine the Curvic Coupling Location Holes at Location 4

    1. Refer to Figure.

      2. Burred..

      1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

    8. SUBTASK 72-41-11-220-080 Examine the Stages 3 to 8 HP Compressor Discs Diaphragms

    1. Examine the stage 3 diaphragm bore at Location 5A and the diaphragm surface at Location 6A. Refer to Figure.

    2. Examine the stage 4 diaphragm bore at Location 5B and the diaphragm surface at Location 6B. Refer to Figure.

    3. Examine the stage 5 diaphragm bore at Location 5C and the diaphragm surface at Location 6C. Refer to Figure.

    4. Examine the stage 6 diaphragm bore at Location 5D and the diaphragm surface at Location 6D. Refer to Figure.

    5. Examine the stage 7 diaphragm bore at Location 5E and the diaphragm surface at Location 6E. Refer to Figure.

    6. Examine the stage 8 diaphragm bore at Location 5F and the diaphragm surface at Location 6F. Refer to Figure.

      7. Examine the diaphragm bore.

        1. Nicked, dented, scratched or scored.

        1. Repair, VRS6149 TASK 72-41-11-300-012 (REPAIR-012).

      8. Examine the diaphragm surface.

        1. Nicked, dented, scratched or scored.

        1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

    9. SUBTASK 72-41-11-220-081 Examine the Stage 3, 4 and 5 HP Compressor Disc Dovetail Slots

    1. Examine the stage 3 slots at Location 7A. Refer to Figure.

    2. Examine the stage 4 slots at Location 7B. Refer to Figure.

    3. Examine the stage 5 slots at Location 7C. Refer to Figure.

      4. Examine the slots at Zone A.

        Zone A

        -

        Dovetail slot bedding area plus 0.050 in. (1.27 mm) below the bottom limit and the complete length of the slot on both sides. Refer to Figure, Figure, Figure and Figure.

        NOTE

        All discs that are used in service will have bedding areas that are easy to see.

        1. Galled.

          1. Bedding signs or mark to no discernible depth.

          1. Accept.

          2. Not more than 0.001 in. (0.03 mm) in depth of not more than 10 percent of the surface area.

          1. Accept.

          3. Not more than 0.002 in. (0.05 mm) in depth of not more than 25 percent of the surface area.

          1. Refer to Repair, VRS6300 TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300, TASK 72-41-11-300-026 (REPAIR-026).

          4. More than Step.

          1. Reject.

      5. Examine the slots at Zone B.

        Zone B

        -

        The area of the dovetail slot below zone A and the complete length of the slot and the area on the front and rear faces of the neck of the slot. The front and rear neck area is shown as the area which extends a given dimension constantly from the dovetail slots and an area below the dovetail slots which extends, constantly, circumferentially around all of the disc. Refer to Figure, Figure, Figure and Figure.

        1. Scored/Nicked.

          1. Not more than 0.005 in. (0.127 mm) in depth.

          1. Refer to Repair, VRS6300, TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300, TASK 72-41-11-300-026 (REPAIR-026).

          2. More than Step

          1. Reject

        2. Fretted.

          1. Not more than 0.010 in. (0.254 mm) in depth.

          1. Refer to Repair, VRS6300, TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300, TASK 72-41-11-300-026 (REPAIR-026).

          2. More than Step

          1. Reject

      6. Examine the slots at zone C.

        Zone C

        -

        All of the remaining areas of the dovetail slots that are not included in zones A or B. Refer to Figure, Figure, Figure and Figure.

        1. Scored/Nicked.

          1. Not more than 0.020 in. (0.508 mm) in depth.

          1. Refer to Repair, VRS6300, TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300, TASK 72-41-11-300-026 (REPAIR-026).

          2. More than Step

          1. Reject

        2. Fretted.

          1. Not more than 0.020 in. (0.508 mm) in depth.

          1. Refer to Repair, VRS6300, TASK 72-41-11-300-016 (REPAIR-016) or Repair, VRS9300, TASK 72-41-11-300-026 (REPAIR-026).

          2. More than Step

          1. Reject

    10. SUBTASK 72-41-11-220-082 Examine the Stages 3, 4 and 5 HP Compressor Disc Grooves

    1. Examine the stage 3 grooves at Location 1011. Refer to Figure.

    2. Examine the stage 4 grooves at Location 1013. Refer to Figure.

    3. Examine the stage 5 grooves at Location 1015. Refer to Figure.

      4. Galled/Scored/Fretted.

        1. In the limits of VRS6630

        1. Repair, VRS6630 TASK 72-41-11-300-023 (REPAIR-023).

        2. More than Step.

        1. Reject.

      5. Dimensionally examine the grooves for wear.

        1. If the width of each groove is between 0.0945 in. and 0.0968 in. (2.40 mm and 2.46 mm).

        1. Accept.

        2. If the width of the groove is more than 0.0968 in. (2.46 mm).

        1. Reject.

    11. SUBTASK 72-41-11-220-083 Examine the Stages 3, 4 and 5 HP Compressor Discs Seal Fins

    1. NOTE

      If the seal fins are accepted, write down the value of the diameters of the seal fins at each Location. These values are used during assembly (72-41-00).

      Examine the stage 3 seal fins at Location 1001. Refer to Figure.

    2. Examine the stage 4 seal fins at Locations 1002 and 1003. Refer to Figure.

    3. Examine the stage 5 seal fins at Location 1004. Refer to Figure.

      4. Scored/Burred.

        1. In the limits of VRS6048

        1. Repair, VRS6048 TASK 72-41-11-300-004 (REPAIR-004).

        2. More than Step but in the limits of VRS6122.

        1. Repair, VRS6122 TASK 72-41-11-300-013 (REPAIR-013).

        3. More than Step.

        1. Reject.

      5. Worn.

        1. Location 1001.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002).

          2. If the value is between 10.308 in. and 10.331 in. (261.81 mm and 262.40 mm).

          1. Accept.

          3. If the value is less than 10.308 in. (261.81 mm).

          1. Reject.

        2. Location 1002.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002).

          2. If the value is between 11.851 in. and 11.874 in. (301.02 mm and 301.60 mm).

          1. Accept.

          3. If the value is less than 11.851 in. (301.02 mm).

          1. Reject.

        3. Location 1003.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002).

          2. If the value is between 12.229 in. and 12.252 in. (310.62 mm and 311.20 mm).

          1. Accept

          3. If the value is less than 12.229 in. (310.62 mm).

          1. Reject.

        4. Location 1004.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002).

          2. If the value of all three seal fins is between 13.855 in. and 13.878 in. (351.92 mm and 352.50 mm).

          1. Accept.

          3. If the value of two of the three seal fins is between 13.855 in. and 13.878 in. (351.92 mm and 352.50 mm) and one of the three seal fin is between 13.821 in. and 13.878 in. (351.05 mm and 352.50 mm).

          1. Accept.

          4. If any one seal fin has been accepted by Step or Step but has an irregular profile.

          1. Repair, VRS6048 TASK 72-41-11-300-004 (REPAIR-004). Remove high spots and burrs only.

          5. If the value of more than one seal fins is less than 13.855 in. (351.92 mm).

          1. Reject.

          6. If the value of any one of the seal fins is less than 13.821 in. (351.05 mm).

          1. Reject.

    12. SUBTASK 72-41-11-220-084 Examine the Stages 6 and 7 HP Compressor Discs Linings

    1. Examine the stage 6 linings at Location 1056. Refer to Figure.

    2. Examine the stage 7 linings at Location 1057. Refer to Figure.

      3. Worn.

        1. Location 1056.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002) and TASK 72-41-10-040-001-C00 (DISASSEMBLY-004).

          2. If the value is more than 8.600 in. (218.44 mm).

          1. Accept.

          3. If the value is less than 8.600 in. (218.44 mm).

          1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

        2. Location 1057.

        1. Refer to the values written in TASK 72-41-10-040-001-B00 (DISASSEMBLY, CONFIG-002) and TASK 72-41-10-040-001-C00 (DISASSEMBLY-004).

          2. If the value is more than 8.9340 in. (226.924 mm).

          1. Accept.

          3. If the value is less than 8.9340 in. (226.924 mm).

          1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

      4. Damaged.

        1. Missing.

        1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

        2. Grooved

        1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

        3. Rubtrack.

          1. Light smearing of coating that is not more than 0.002 in. (0.05 mm) in depth.

          1. Accept.

          2. Other than Step

          1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

        4. Chipped.

          1. Not more than 10 percent of the total width, a total of 25 percent of the circumference, 0.0040 in. (0.102 mm) in depth along both edges

          1. Accept.

          2. Other than Step

          1. Repair, VRS6007 TASK 72-41-11-300-002 (REPAIR-002).

    13. SUBTASK 72-41-11-220-085-A00 Examine the Stages 6, 7 and 8 HP Compressor Discs Circumferential Grooves (SBE 72-0300, SBE 72-0376, SBE 72-0470 and SBE 72-0606)

    1. NOTE

      SBE 72-0606 is applicable for re-worked standards from SBE 72-0300, SBE 72-0376, SBE 72-0470 and new production part.

      NOTE

      For SBE 72-0606 standard with part numbers 6B1384, 6B1385, 6B1386 or 6B1404 is this SUBTASK applicable.

      Examine the stage 6 disc at Locations 1016, 1017, 1018, 1019, 1020 and 1021. Refer to Figure and Figure.

    2. Examine the stage 7 disc at Locations 1022, 1025, 1266 and 1267. Refer to Figure and Figure.

    3. Examine the stage 8 disc at Locations 1268 and 1269. Refer to Figure and Figure.

      4. Galled/Scored/Scratched

      1. Repair VRS6047, TASK 72-41-11-300-003 (REPAIR-003).

      5. Worn.

        1. Stage 6 seal grooves at Locations 1017 and 1020.

          1. Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 mm and 1.98 mm).

          1. Accept.

          2. In the limits of VRS6626.

          1. Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step.

          1. Reject.

        2. Stage 7 seal grooves at Locations 1266 and 1267.

          1. Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 and 1.98 mm).

          1. Accept.

          2. In the limits of VRS6626

          1. Repair VRS6626, TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step

          1. Reject.

        3. Stage 8 seal groove at Locations 1268 and 1269.

          1. Width of the groove over the whole circumference is between 0.073 in. and 0.078 in. (1.86 and 1.98 mm).

          1. Accept

          2. In the limits of VRS6626

          1. Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step

          1. Reject.

      6. Chipped.

        1. Stage 6 seal grooves at Locations 1017 and 1020. Refer to Figure.

          1. Chips or material loss

          1. Reject.

        2. Stage 7 seal grooves at Locations 1266 and 1267. Refer to Figure.

          1. Chips or material loss

          1. Reject.

        3. Stage 8 seal grooves at Locations 1268 and 1269. Refer to Figure.

          1. Chips or material loss

          1. Reject.

    14. SUBTASK 72-41-11-220-085-B00 Examine the Stages 6, 7 and 8 HP Compressor Discs Circumferential Grooves (Pre SBE 72-0178, SBE 72-0178, SBE 72-0254, SBE 72-0304 and SBE 72-0606)

    1. NOTE

      SBE 72-0606 is applicable for re-worked standards from SBE 72-0304.

      NOTE

      For SBE 72-0606 standard with part numbers 6B1379, 6B1380 or 6B1387 is this SUBTASK applicable.

      Examine the stage 6 disc at Locations 1016, 1017, 1018, 1019, 1020 and 1021. Refer to Figure and Figure.

    2. Examine the stage 7 disc at Locations 1022, 1025, 1266 and 1267. Refer to Figure and Figure.

    3. Examine the stage 8 disc at Locations 1268 and 1269. Refer to Figure and Figure.

      4. Galled or Scored or Scratched

      1. Repair VRS6047, TASK 72-41-11-300-003 (REPAIR-003).

      5. Worn

        1. Stage 6 seal grooves at Locations 1017 and 1020.

          1. Width of the groove over the whole circumference is between 0.074 in. and 0.078 in. (1.87 mm and 1.97 mm).

          1. Accept.

          2. In the limits of VRS6626.

          1. Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step

          1. Reject

        2. Stage 7 seal grooves at Locations 1266 and 1267.

          1. Width of the groove over the whole circumference is between 0.042 in. and 0.046 in. (1.06 mm and 1.16 mm).

          1. Accept.

          2. In the limits of VRS6626

          1. Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step.

          1. Reject.

        3. Stage 8 seal groove at Location 1268 and 1269.

          1. Width of the groove over the whole circumference is between 0.042 in. and 0.046 in. (1.06 mm and 1.16 mm).

          1. Accept.

          2. In the limits of VRS6626

          1. Repair, VRS6626 TASK 72-41-11-300-022 (REPAIR-022).

          3. More than Step and Step.

          1. Reject.

      6. Chipped

        1. Stage 6 seal grooves at Locations 1017 and 1020. Refer to Figure and Figure.

          1. Chips or material loss.

          1. Reject.

        2. Stage 7 seal grooves at Locations 1266 and 1267. Refer to Figure and Figure.

          1. Chips or material loss

          1. Reject.

        3. Stage 8 seal grooves at Locations 1268 and 1269. Refer to Figure and Figure.

          1. Chips or material loss

          1. Reject.

    15. SUBTASK 72-41-11-220-085-C00 Examine the Stages 6, 7 and 8 HP Compressor Discs Circumferential Grooves (SBE 72-0605)

    1. NOTE

      SBE 72-0605 is applicable for specific re-worked standards from SBE 72-0606.

      NOTE

      For SBE 72-0605 standard with part numbers 6B1391, 6B1392, 6B1393 or 6B1405 is this SUBTASK applicable.

      Examine the stage 6 disc at Locations 1016, 1017, 1018, 1019, 1020 and 1021. Refer to Figure and Figure.

    2. Examine the stage 7 disc at Locations 1022, 1025, 1266 and 1267. Refer to Figure and Figure.

    3. Examine the stage 8 disc at Locations 1268 and 1269. Refer to Figure and Figure.

      4. Galled or Scored or Scratched

      1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

      5. Chipped

        1. Stage 6 seal grooves at Locations 1017 and 1020. Refer to Figure and Figure.

          1. Chips or material loss

          1. Reject.

        2. Stage 7 seal grooves at Locations 1266 and 1267. Refer to Figure and Figure.

          1. Chips or material loss

          1. Reject.

        3. Stage 8 seal grooves at Locations 1268 and 1269. Refer to Figure and Figure.

          1. Chips or material loss

          1. Reject.

    16. SUBTASK 72-41-11-220-086 Examine the Rear of the Stage 8 HP Compressor Disc

    1. Refer to Figure.

      2. Examine the Location diameter at Location 1005.

        1. Galled/Scored

        1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

        2. Worn.

          3. If the diameter is between 16.1417 in. and 16.1442 in. (410.000 mm and 410.063 mm).

          1. Accept.

          2. Write down the dimension of the diameter.

          4. If the diameter is more than 16.1442 in. (410.063 mm)

          1. Repair, VRS6154 TASK 72-41-11-300-014 (REPAIR-014).

      3. Examine the Location surface at Location 8.

        1. Galled/Scored

        1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

      4. Examine the bolt holes at Location 9.

        1. Burred edges

        1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

        2. Scored

        1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

    17. SUBTASK 72-41-11-220-087 Examine the Stage 6, 7 and 8 HP Compressor Disc Circumferential Dovetail Slots

    1. Examine the stage 6 slots at Location 11A. Refer to Figure.

    2. Examine the stage 7 slots at Location 11B. Refer to Figure.

    3. Examine the stage 8 slots at Location 11C. Refer to Figure.

      4. Examine the slots at zone A. Refer to Figure.

        Zone A

        -

        Dovetail slot bedding area plus 0.050 in. (1.27 mm) below the bottom limit and the complete length of the slot on both sides

        NOTE

        All discs that are used in service will have bedding areas that are easy to see.

        1. Galled.

          1. Bedding witness or mark to no discernible depth

          1. Accept.

          2. Not more than 0.001 in. (0.03 mm) in depth.

          1. Accept.

          3. Not more than 0.002 in. (0.05 mm) in depth.

          1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).

          4. More than Step

          1. Reject.

      5. Examine the slots at zone B. Refer to Figure.

        Zone B

        -

        The area in the center of the dovetail slot

        1. Galled/Fretted.

          1. Not more than 0.002 in. (0.05 mm) in depth.

          1. Accept

          2. More than Step

          1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).

        2. Scored/Nicked.

          1. Not more than 0.002 in. (0.05 mm) in depth

          1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).

          2. More than Step

          1. Reject

      6. Examine the slots at Zone C. Refer to Figure.

        Zone C

        -

        The blade loading and blade locking slot(s) and an area around it, on all surfaces of the dovetail, 0.040 in. (1.00 mm) away from the edges of the slot(s)

        1. Galled/Fretted.

          1. Not more than 0.002 in. (0.05 mm) in depth.

          1. Refer to Repair, VRS6133, TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133, TASK 72-41-11-300-027 (REPAIR-027).

          2. More than Step.

          1. Reject.

        2. Scored/Nicked.

          1. Not more than 0.001 in. (0.025 mm) in depth.

          1. Refer to Repair, VRS6133 TASK 72-41-11-300-009 (REPAIR-009) or Repair, VRS9133 TASK 72-41-11-300-027 (REPAIR-027).

          2. More than Step

          1. Reject

      7. Examine the slots at Zone D. Refer to Figure.

        Zone D

        -

        The area between Zone A and B

        1. Scored/Nicked/Galled/Fretted.

          1. Not more than 0.001 in. (0.025 mm).

          1. Accept

          2. More than Step

          1. Reject

      8. Examine the slots at Zone E. Refer to Figure.

        Zone E

        -

        The remaining areas of the disc around the dovetail slots that are not in Zones A and C.

        1. Scored/Nicked/Galled/Fretted.

          1. Not more than 0.0050 in. (0.127 mm).

          1. Repair, VRS6047 TASK 72-41-11-300-003 (REPAIR-003).

          2. More than Step

          1. Reject

    18. SUBTASK 72-41-11-350-108 Replace the Curvic Coupling Shank Nuts at Location 3

    1. Refer to Figure.

      2. Replace the shank nuts which were removed at Step

      1. Repair, VRS6220 TASK 72-41-11-300-011 (REPAIR-011).

    19. SUBTASK 72-41-11-380-053 Apply the Dry Film Lubricant

      1. Apply the dry film lubricant

      1. Repair, VRS6487 TASK 72-41-11-300-017 (REPAIR-017).

    20. Figure: Stage 3 HP Compressor Disc - Inspection Locations

    Stage 3 HP Compressor Disc - Inspection Locations

    Figure: Stage 4 HP Compressor Disc - Inspection Locations

    Stage 4 HP Compressor Disc - Inspection Locations

    Figure: Stage 5 HP Compressor Disc - Inspection Locations

    Stage 5 HP Compressor Disc - Inspection Locations

    Figure: Stage 6 HP Compressor Disc - Inspection Locations

    Stage 6 HP Compressor Disc - Inspection Locations

    Figure: Stage 7 HP Compressor Disc - Inspection Locations

    Stage 7 HP Compressor Disc - Inspection Locations

    Figure: Stage 8 HP Compressor Disc - Inspection Locations

    Stage 8 HP Compressor Disc - Inspection Locations

    Figure: Focused Inspection - HP Compressor Stage 6 Seal Grooves

    Focused Inspection - HP Compressor Stage 6 Seal Grooves

    Figure: Focused Inspection - HP Compressor Stage 7 Seal Grooves

    Focused Inspection - HP Compressor Stage 7 Seal Grooves

    Figure: Focused Inspection - HP Compressor Stage 8 Seal Grooves and Inner Cavity

    Focused Inspection - HP Compressor Stage 8 Seal Grooves and Inner Cavity

    Figure: Focused Inspection - HP Compressor Stages 3 to 8 Discs

    Focused Inspection - HP Compressor Stages 3 to 8 Discs

    Figure: HP Compressor Stages 3, 4 and 5 Axial Dovetail Slots Inspection Zones

    HP Compressor Stages 3, 4 and 5 Axial Dovetail Slots Inspection Zones

    Figure: HP Compressor Stage 3 Axial Dovetails Slot Inspection Zones

    HP Compressor Stage 3 Axial Dovetails Slot Inspection Zones

    Figure: HP Compressor Stage 4 Axial Dovetail Slot Inspection Zones

    HP Compressor Stage 4 Axial Dovetail Slot Inspection Zones

    Figure: HP Compressor Stage 5 Axial Dovetail Slot Inspection Zones

    HP Compressor Stage 5 Axial Dovetail Slot Inspection Zones

    Figure: HP Compressor Stages 6, 7 and 8 Circumferential Dovetail Slot Inspection Zones

    HP Compressor Stages 6, 7 and 8 Circumferential Dovetail Slot Inspection Zones

    Figure: Examine the Sealing Groove

    Examine the Sealing Groove

    Figure: HP Compressor Stages 3 to 8 Drum Inspection Equipment for Fluorescent Penetrant Inspection of Internal Surfaces

    HP Compressor Stages 3 to 8 Drum Inspection Equipment for Fluorescent Penetrant Inspection of Internal Surfaces

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to add weld spatter inspection. (18VG374)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
Manufacturer Code:LOCAL
Supply Number:CoMat 02-005
Type:sp01
Supply Short Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 2/94 (RR REF)AT 7 BLACK, WATERPROOF
Suppliers:
ManufacturerRemarks
LOCAL
U0415
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 05-001
Type:sp01
Supply Short Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Supply Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Specification Groups:
Doc NumberType
Use one of the CoMat 05-001 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:01PQ6
Supply Number:CoMat 06-030
Type:sp01
Supply Short Name:CoMat 06-030 NON AQUEOUS DEVELOPER
Supply Name:CoMat 06-030 NON AQUEOUS DEVELOPER
Specification Groups:
Doc NumberType
ARDROX 9D1B
Suppliers:
ManufacturerRemarks
01PQ6
D1940
K6858
Manufacturer Code:0AM53
Tool Number:IAE 2R19883
Tool Name:IAE 2R19883 Rotary table inspection device
Manufacturer Code:0AM53
Tool Number:IAE 2R19884
Tool Name:IAE 2R19884 Adapter
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