TASK 72-41-10-200-001-B00 HPC Rotor Assembly - Examine The Stage 3 To 12 Disk Assembly, Inspection-001

DMC:V2500-A0-72-41-1000-00B-310A-B|Issue No:001.00|Issue Date:2013-11-01

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

All

Common Information

TASK 72-41-10-200-001-B00 HPC Rotor Assembly - Examine The Stage 3 To 12 Disk Assembly, Inspection-001

General

This TASK defines the Special Procedure to examine the HP disk assembly when no further disassembly is required.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-10-210-054 Examine the Stage 3 HP Compressor Rotor Blades

    1. Refer to Figure, Figure and Figure.

      2. Examine the stage 3 blade assembly, porcupine check at zone B.

      1. NOTE

        Do not force the adjacent rotor blades apart.

        Lightly push apart two adjacent blades and where possible insert feeler gage.

      2. Do the Step again around the remaining adjacent rotor blades inserting feeler gage where possible.

      3. Remove all feeler gages inserted in Step and Step. Record the individual values of each feeler gage.

      4. Add the individual values together to give a total clapper gap measurement.

        5. Total measured gap less than 0.140 in. (3.60 mm)

        1. Accept

        6. If more than in Step

        1. Repair VRS6236, TASK 72-41-15-300-035 (REPAIR-035)

      3. Nicked and torn blades quantity.

        1. Maximum of four blades with nicks or tears and not more than one damage per blade in acceptable limits

        1. Accept

        2. More than Step

        1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

        3. More than Step and Step

        1. Reject

      4. Zone A.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Nicked or torn.

          1. Not more than 0.060 in. (1.52 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in Repair VRS6524

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in Repair VRS6524 and in the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        3. Dented (not related to cracks, nicks or tears)

        1. Accept

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. More than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      5. Zone B.

        1. Nicked, cracked or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to cracks, nicks or tears)

        1. Accept

      6. Clapper face contact.

        1. Less than 50 percent clapper face contact abutment area E.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Clapper overlap C.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        3. Clapper face irregular wear B and C.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      7. Clapper hard coating at B and C.

        1. Chipped.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      8. Zone C.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Nicked or torn.

          1. Not more than 0.030 in. (0.76 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in Repair VRS6524

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in VRS6524 and in the limits given in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        3. Dented (not related to cracks, nicks or tears)

        1. Accept

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. More than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      9. Zone D.

        1. Nicked, cracked, dented or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      10. Blade tips.

        1. Missing piece or cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Discoloration (related to tip rub).

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        3. Bent or curled (not related to cracks or tears) not more than five percent of dimension X or Y

        1. Accept

        4. Tip rub (not related to cracks and tears)

        1. Accept

      11. All areas.

        1. Deposits

          1. Light deposits of abradable or atmospheric contamination

          1. Accept

    2. SUBTASK 72-41-10-220-105 Examine the Stage 4 and Stage 5 HP Compressor Rotor Blades

    1. Refer to Figure and Figure.

      2. Nicked and torn blades quantity.

        1. Stage 4.

          1. Maximum of five blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        2. Stage 5.

          1. Maximum of five blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (72-0-041, REPAIR 005)

          3. More than Step and Step

          1. Reject

      3. Zone A - stage 4 and stage 5 rotor blades.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to cracks, nicks or tears)

        1. Accept

        3. Nicked or torn.

          1. Not more than 0.060 in. (1.52 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in Repair VRS6524

          1. Repair VRS6524 TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in Repair VRS6524 and in the limits in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. More than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      4. Zone B - stage 4 and stage 5 rotor blades.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to cracks, nicks or tears)

        1. Accept

        3. Nicked or torn.

          1. Not more than 0.030 in. (0.76 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in Repair VRS6524

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in Repair VRS6524 and in the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. More than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      5. Zone C - stage 4 and stage 5 rotor blades.

        1. Nicked, cracked, dented or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      6. Blade tips - stage 4 and Stage 5 rotor blades.

        1. Missing piece or cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Discoloration (related to tip rub)

        1. Accept

        3. Bent or curled (not related to cracks or tears) not more than five percent of dimension X or Y

        1. Accept

        4. Tip rub (not related to cracks or tears)

        1. Accept

      7. All areas.

        1. Deposits.

          1. Light deposits of abradable/atmospheric contamination

          1. Accept

    3. SUBTASK 72-41-10-220-108 Examine the Stage 6 HP Compressor Rotor Blades

    1. Refer to Figure and Figure.

      2. Zone A.

        1. Cracked, nicked or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to cracks, nicks or tears)

        1. Accept

        3. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

      3. Zone B.

        1. Cracked, nicked or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to cracks, nicks or tears)

        1. Accept

        3. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

      4. Zone C.

        1. Nicked, cracked, dented or torn.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      5. Blade tips.

        1. Missing piece.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Discoloration (related to tip rub)

        1. Accept

        3. Bent or curled (not related to cracks or tears) not more than five percent of dimension X or Y

        1. Accept

        4. Tip rub (not related to cracks or tears)

        1. Accept

      6. All areas.

        1. Deposits.

          1. Light deposits of abradable or atmospheric contamination

          1. Accept

    4. SUBTASK 72-41-10-220-106 Examine the Stage 7 to Stage 12 HP Compressor Rotor Blades

    1. Refer to Figure and Figure.

      2. Nicked and torn blades quantity.

        1. Stage 7.

          1. Maximum of 19 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        2. Stage 8.

          1. Maximum of 19 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        3. Stage 9.

          1. Maximum of 33 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        4. Stage 10.

          1. Maximum of 35 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        5. Stage 11.

          1. Maximum of 35 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

        6. Stage 12.

          1. Maximum of 28 blades with nicks or tears and not more than one damage per blade in the acceptable limits

          1. Accept

          2. More than Step

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          3. More than Step and Step

          1. Reject

      3. Zone A - stage 7 to stage 12 rotor blades.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to nicks)

        1. Accept

        3. Nicked and torn.

          1. Not more than 0.030 in. (0.76 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in Repair VRS6524

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in Repair VRS6524 and in the limits given in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. More than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      4. Zone B - stage 7 to stage 12 rotor blades.

        1. Cracked.

          1. In the limits given in Repair VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Dented (not related to nicks)

        1. Accept

        3. Nicked and torn.

          1. Not more than 0.015 in. (0.38 mm) in depth

          1. Accept

          2. If more than Step and in the limits given in VRS6524

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

          3. If more than the limits given in Repair VRS6524 and in the limits given in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          4. More than Step, Step and Step

          1. Reject

        4. Eroded.

          1. Light erosion on the leading edge not affecting leading edge profile

          1. Accept

          2. If more than Step

          1. Repair VRS6524, TASK 72-00-41-300-004 (REPAIR-004)

      5. Zone C - stage 7 to stage 12 rotor blades.

        1. Nicked, cracked, dented or torn.

          1. In the limits given in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

      6. Blade tips.

        1. Missing piece or cracked.

          1. In the limits given in VRS6523

          1. Replace the damaged blades. Refer to Repair VRS6523, TASK 72-00-41-300-005 (REPAIR-005)

          2. More than Step

          1. Reject

        2. Discoloration (related to tip rub)

        1. Accept

        3. Bent or curled (not related to cracks or tears) not more than 5 percent of dimension X or Y

        1. Accept

        4. Tip rub (not related to cracks or tears)

        1. Accept

      7. All areas.

        1. Deposits.

          1. Light deposits of abradable or atmospheric contamination

          1. Accept

    5. SUBTASK 72-41-10-210-055 Examine the Disk at the Stage 8, 9, 10 and 11 Ceramic Vane Rub Strips

    1. Refer to Figure.

      2. Examine the ceramic vane rub strips.

        1. Chips at edges.

          1. Local areas not more than 15 percent of the total width, a total of 85 percent of the circumference and 0.0140 in. (0.356 mm) in depth along both edges, which may expose the bond coat

          1. Accept

          2. Other than Step

          1. Reject

        2. Chips at the vane path.

          1. Local areas not more than 60 percent of the total width, a total of 30 percent of the circumference and 0.0050 in. (0.127 mm) in depth

          1. Accept

          2. Other than Step

          1. Reject

    6. Figure: HP Compressor Blades

    Sheet 1

    Legend
    HP Compressor Blades

    Sheet 1

    Close

    Figure: HP Compressor Blades

    Sheet 2

    Legend
    HP Compressor Blades

    Sheet 2

    Close

    Figure: HP Compressor Blades

    Sheet 3

    Legend
    HP Compressor Blades

    Sheet 3

    Close

    Figure: Stages 8, 9, 10 and 11 Ceramic Vane Rub Strips

    Stages 8, 9, 10 and 11 Ceramic Vane Rub Strips

Requirements After Job Completion

Follow-On Conditions

NONE