TASK 72-44-30-200-001-B00 Inner Combustion Chamber Assembly - Examine, Inspection-001

DMC:V2500-A0-72-44-3000-00B-310A-C|Issue No:003.00|Issue Date:2020-02-01

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 72-44-30-200-001-B00 Inner Combustion Chamber Assembly - Examine, Inspection-001

Effectivity

FIG/ITEM PART NO.

01-401

2A0549-01

01-401

2A1398

01-401

2A1617

01-401

2A2034

01-401

2A2034-001

01-401

2A2722-01

01-401

2A2838-01

01-401

2A3344-01

01-401

2A3344-001

01-401

2A3344-002

01-401

2A3344-003

01-401

2A3344-004

01-401

2A3344-005

01-401

2A3344-006

01-401

2A3344-007

01-401

2A3351-01

01-401

2A3351-003

01-401

2A3351-004

01-401

2A4283-01

01-401

2A4311-01

01-401

2A4313-01

01-401

2A4315-01

01-401

2A4315-001

General

This TASK gives the procedure for the inspection of the combustion chamber inner liner. For the other part of the combustion chamber inner liner, refer to TASK 72-44-30-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to SPM TASK 70-10-00-100-501.

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

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in repair before a discarded part is used again or oversize 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 numbers are in SPM.

Use a bright light and a 3X magnifying glass to find surface cracks.

PNs 2A3344-002, 2A3344-004, 2A3344-007, 2A4283-01, 2A4315-01 and 2A4315-001 contain Rows 3 and 4 with single crystal liners.

References

Refer to SPM for data on these items.

Definitions of Damage, SPM TASK 70-02-02-350-501.

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-44-30-220-063 Examine the Combustion Chamber Inner Liner (01-401) for Cracks, Holes, Burns and Distortion in the Liner Segments

    1. Refer to Figure.

      2. Examine the inner liner for cracks, holes, burns and distortion in the liner segments, rows 1 thru 5.

        1. Cracks.

          1. Any amount of cracks. The cracks are not longer than 0.100 in. (2.50 mm) on the trailing edge at location 1 or not longer than 0.250 in. (6.35 mm) from a combustion hole at location 13. Cracks must not intersect

          1. Accept

          2. Other than (a)

          1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

        2. Holes

        1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

      3. Burns on the trailing edge (missing material)

        4. Burns go forward axially until the leading edge of a downstream segment is exposed

        1. Accept

        5. Other than (a)

        1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

        6. Burns on the corners (missing material).

          1. Burns go circumferentially or axially in an area that is 0.100 in. (2.54 mm) circumferentially by 0.100 in. (2.54 mm) axially

          1. Accept

          2. Other than (a)

          1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

        7. Surface burns

        1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

        8. Distortion.

          1. The clearance under the cooling pins at location 3 is a maximum of 0.080 in. (2.032 mm). Circumferentially adjacent segments at location 4 are not aligned by as much as 0.080 in. (2.032 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

    2. SUBTASK 72-44-30-220-064 Examine the Combustion Chamber Inner Liner (01-401) for Wear that is Not Smooth on the Rear Flange-to-Vane Platform Seal Face

    1. Refer to Figure.

      2. Examine the inner liner shell at location 5 for wear that is not smooth on the rear flange-to-vane platform seal face.

        1. Wear that is not smooth.

          1. If the wear at the vane contact points is a maximum of 0.010 in. (0.25 mm) in depth

          1. Accept

          2. If the wear at the vane contact points is a maximum of 0.020 in. (0.51 mm) in depth

          1. Repair, VRS3265 TASK 72-44-30-300-002 (REPAIR-002)

          3. If the wear at the vane contact points is a maximum of 0.030 in. (0.76 mm) in depth

          1. Repair, VRS3813 TASK 72-44-30-300-021 (REPAIR-021)

          4. Other than (a), (b) or (c)

          1. Reject

    3. SUBTASK 72-44-30-220-065 Examine the Combustion Chamber Inner Liner (01-401) Nut Channel for Nuts that are Not There, Cracks and Pieces that are Broken Away

    1. Refer to Figure.

      2. Examine the inner liner nut channel at location 6 for nuts that are not there, cracks and pieces that are broken away.

        1. Nuts that are not there, cracks or pieces that are broken away

        1. Repair, VRS3264 V2500-A0-72-44-3001-00A-920A-C (REPAIR-003)

    4. SUBTASK 72-44-30-220-066 Examine the Combustion Chamber Inner Liner (01-401) for Wear and Chipped or Spalled Hardface and for Hole Cracks on the Rear Mount Flange

    1. Refer to Figure.

      2. Examine the inner liner at location 7 for wear and chipped or spalled hardface on the rear mount flange.

        1. Wear.

          1. If the base metal does not show

          1. Accept

          2. Other than (a)

          1. Repair, VRS3170 TASK 72-44-30-300-004 (REPAIR-004)

        2. Chipped or spalled hardface.

          1. If the area of chipped or spalled hardface is not more than 10 percent of the total coated area. The area of chipped or spalled hardface must not be more than 10 percent of the axial width of the coated area

          1. Accept

          2. Other than (a)

          1. Repair, VRS3170 TASK 72-44-30-300-004 (REPAIR-004)

      3. Examine the inner liner for hole cracks on the rear mount flange.

        1. Cracks.

          1. If the hole cracks go from the flange hole to the outside diameter of the flange

          1. Repair, VRS3741 TASK 72-44-30-300-019 (REPAIR-019)

          2. Other than (a)

          1. Reject

    5. SUBTASK 72-44-30-220-067 Examine the Combustion Chamber Inner Liner (01-401) for Nuts that are Not There

    1. Refer to Figure.

      2. Examine the inner liner at location 8 for nuts that are not there.

        1. Nuts that are not there

        1. Repair, VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

    6. SUBTASK 72-44-30-220-068 Examine the Combustion Chamber Inner Liner (01-401) for Loose, Oval-Shaped Washers

    1. Refer to Figure.

      2. Examine the inner liner at location 9 for loose, oval-shaped washers.

        1. Loose washers

        1. Replace washers by VRS3173 TASK 72-44-30-300-001 (REPAIR-001)

    7. SUBTASK 72-44-30-220-069 Examine the Combustion Chamber Inner Liner (01-401) for Cracks, Dents, Burn Holes and Blocked Holes on the Shell

    1. Refer to Figure.

      2. Examine the inner liner at Location 11 for cracks, dents, burn holes and blocked holes on the shell.

        1. Cracks.

        1. Repair, VRS3174 TASK 72-44-30-300-005 (REPAIR-005).

        2. Dents.

          1. Less than 0.010 in. (0.25 mm) in depth and 1.0 sqin (645.16 sqmm) in area.

          1. Accept.

          2. Other than Step.

          1. Repair, VRS3174 TASK 72-44-30-300-005 (REPAIR-005).

        3. Burn holes.

        1. Repair, VRS3174 TASK 72-44-30-300-005 (REPAIR-005).

        4. Blocked holes.

        1. Reject.

      3. Examine the inner liner at Location 14 for cracks on the shell.

        1. Axial cracks not more than 0.100 in. (2.54 mm) long that are at least 0.250 in. (6.35 mm) apart.

        1. Accept.

        2. Axial cracks on the trailing edge of Row 5 that are not more than 0.125 in. (3.175 mm) long that are at least 0.100 in. (2.540 mm) apart, or look like they will go through each other and permit material to break off.

        1. Repair, VRS3745 TASK 72-44-30-300-020 (REPAIR-020).

        3. Other than Step and Step.

        1. Reject.

      4. Examine the inner liner at Location 15 for cracks on the rear flange.

        1. Cracks which extend from the boltholes.

        1. Repair, VRS3745 TASK 72-44-30-300-020 (REPAIR-020).

        2. Other than Step.

        1. Reject.

      5. Examine the inner liner at Location 16 for cracks on the outer shell.

        1. Axial cracks not more than 0.100 in. (2.54 mm) long that are at least 0.250 in. (6.35 mm) apart.

        1. Accept.

        2. Axial cracks on the trailing edge of Row 5 that are not more than 0.125 in. (3.175 mm) long that are at least 0.100 in. (2.540 mm) apart, or look like they will go through each other and permit material to break off.

        1. Repair, VRS3745 TASK 72-44-30-300-020 (REPAIR-020).

        3. Other than Step and Step.

        1. Reject.

    8. SUBTASK 72-44-30-220-070 Examine the Combustion Chamber Inner Liner (01-401) for Wear and Chipped or Spalled Hardface on the Front Outside Diameter Seal

    1. Refer to Figure.

      2. Examine the inner liner at location 12, for wear and chipped or spalled hardface on the front outside diameter seal.

        1. Wear.

          1. If the base metal does not show

          1. Accept

          2. Other than (a)

          1. Repair, VRS3169 TASK 72-44-30-300-007 (REPAIR-007) or Repair, VRS3055 TASK 72-44-30-300-014 (REPAIR-014)

        2. Chipped or spalled hardface.

          1. If the area of chipped or spalled hardface is not more than 10 percent of the total coated area. The area of chipped or spalled hardface must not be more than 10 percent of the axial width of the coated area

          1. Accept

          2. Other than (a)

          1. Repair, VRS3169 TASK 72-44-30-300-007 (REPAIR-007) or Repair, VRS3055 TASK 72-44-30-300-014 (REPAIR-014)

    9. SUBTASK 72-44-30-220-071 Examine the Combustion Chamber Inner Liner (01-401) for Spalled Ceramic Coating on the Liner Segments

    1. Refer to Figure, Figure and Figure.

      NOTE

      Spalled coating must not be connected to any other damage. Spalled coating has a dark area where there are no burns or cracks.

      2. Examine the inner liner (PN 2A1398) at locations 1 and 2 for spalled ceramic coating on the liner segments (rows 2 and 3).

        1. Spalled coating.

          1. If spalled coating is no more than 0.100 in. (2.54 mm) from the edge (all around), and the spalled area is no more than 0.100 sqin (65.00 sqmm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3175 TASK 72-44-30-300-011 (REPAIR-011)

            NOTE

            Spalled coating must not be connected to any other damage. Spalled coating has a dark area where there are no burns or cracks.

      3. Examine the inner liner (2A1617) at locations 1 and 2 for spalled ceramic coating on the liner segments (rows 1 and 4).

        1. Spalled coating.

          1. If spalled coating is no more than 0.100 in. (2.54 mm) from the edge (all around), and the spalled area is no more than 0.100 sq in. (65.00 sq mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3175 TASK 72-44-30-300-011 (REPAIR-011)

            NOTE

            Spalled coating must not be connected to any other damage. Spalled coating has a dark area where there are no burns or cracks.

      4. Examine the inner liner (2A0549-01, 2A2034, 2A2034-001, 2A2722-01, 2A2838-01, 2A3344-01, 2A3344-001, 2A3344-002, 2A3344-003, 2A3344-004, 2A3344-005, 2A3344-006, 2A3344-007, 2A3351-01, 2A3351-003, 2A3351-004, 2A4283-01, 2A4311-01, 2A4313-01, 2A4315-01 and 2A4315-001), at locations 1 thru 4, for spalled ceramic coating on the liner segments (rows 1 thru 4).

        1. Spalled coating.

          1. If spalled coating is no more than 0.100 in. (2.54 mm) from the edge (all around), and the spalled area is no more than 0.100 sqin (65.0 sqmm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3175 TASK 72-44-30-300-011 (REPAIR-011) or Repair VRS3664 TASK 72-44-30-300-018 (REPAIR-018)

            NOTE

            Spalled coating must not be connected to any other damage. Spalled coating has a dark area where there are no burns or cracks.

      5. Examine the inner liner (2A0549-01, 2A2034, 2A2034-001, 2A2722-01, 2A2838-01, 2A3344-01, 2A3344-001, 2A3344-002, 2A3344-003, 2A3344-004, 2A3344-005, 2A3344-006, 2A3344-007, 2A3351-01, 2A3351-003, 2A3351-004, 2A4283-01, 2A4311-01, 2A4313-01, 2A4315-01 and 2A4315-001) at location 5 and inner liner (2A1617) at location 3 for spalled ceramic coating on the liner segments (row 5).

        1. Spalled coating.

          1. Any spalled coating. Base metal must not exhibit any visible distress

          1. Accept

          2. Other than (a)

          1. Repair, VRS3175 TASK 72-44-30-300-011 (REPAIR-011)

    10. SUBTASK 72-44-30-220-072 Examine the Combustion Chamber Inner Liner (01-401) for the Length

    1. Refer to Figure.

      2. Examine the inner liner at location 1 for the length.

        1. Length.

          1. If the length is between 9.030 and 9.135 in. (229.362 and 232.029 mm)

          1. Accept

          2. Other than (a)

          1. Reject

    11. SUBTASK 72-44-30-220-073 Examine the Combustion Chamber Inner Liner (01-401) for the Axial Dimension of the Rear Support and Thickness of the Rear Mount Flange

    1. Refer to Figure.

      2. Examine the inner liner for the axial dimension of the rear support at location 2004.

        1. If the axial dimension is between 0.830 and 0.845 in. (21.08 and 21.46 mm)

        1. Accept

        2. Write down the dimension.

        2. Other than (1)

        1. Repair, VRS3265 TASK 72-44-30-300-002 (REPAIR-002) or Repair, VRS3813 TASK 72-44-30-300-021 (REPAIR-021)

      3. Examine the inner liner for the thickness of the rear mount flange at location 2300.

        1. If the thickness is equal or more than 0.156 in. (3.96 mm)

        1. Accept

        2. If the thickness is less than 0.156 in. (3.96 mm) and equal or more than 0.140 in. (3.56 mm)

        1. Repair, VRS3170 TASK 72-44-30-300-004 (REPAIR-004)

    12. SUBTASK 72-44-30-220-074 Examine the Combustion Chamber Inner Liner (01-401) for the Rear Inside Diameter

    1. Refer to Figure.

      2. Examine the inner liner for the rear inside diameter at location 2000.

        1. If the diameter is between 19.392 in. (492.557 mm) and 19.400 in. (492.76 mm)

        1. Accept

        2. Write down the dimension of the diameter.

        2. More than 19.400 in. (492.760 mm)

        1. Repair, VRS3266 TASK 72-44-30-300-008 (REPAIR-008)

        3. Less than 19.392 in. (492.557 mm)

        1. Repair, VRS3628 TASK 72-44-30-300-017 (REPAIR-017)

    13. SUBTASK 72-44-30-220-075 Examine the Combustion Chamber Inner Liner (01-401) Front Outside Diameter Seal for the Diameter and Out-of-Roundness

    1. Refer to Figure.

      2. Examine the inner liner for the diameter of the front outside diameter seal at location 2265.

        1. If the diameter is between 16.619 and 16.631 in. (422.12 and 422.43 mm)

        1. Accept

        2. Write down the dimension of the diameter.

        2. If the diameter is between 16.616 and 16.618 in. (422.05 and 422.10 mm)

        1. Accept part for select fit only

          NOTE

          This part can be used only if the mating part has a diameter that will result in fit of reference No. 2265.
          Refer to TASK 72-00-44-420-001-001 (INSTALLATION-001) or TASK 72-40-00-430-005 (ASSEMBLY-005).

        2. Write down the dimension of the diameter.

        3. Other than (1) or (2)

        1. Repair, VRS3306 TASK 72-44-30-300-009 (REPAIR-009) or Repair, VRS3057 TASK 72-44-30-300-015 (REPAIR-015)

      3. Examine the inner liner at location 2265 for the out-of-roundness of the front outside diameter seal.

        1. Out-of-roundness.

          1. If the out-of-roundness is not more than 0.120 in. (3.05 mm)

          1. Accept

          2. Other than (a)

          1. Repair, VRS3306 TASK 72-44-30-300-009 (REPAIR-009) or Repair, VRS3057 TASK 72-44-30-300-015 (REPAIR-015)

    14. Figure: Combustion Chamber Inner Liner Inspection Locations

    Combustion Chamber Inner Liner Inspection Locations

    Figure: Combustion Chamber Inner Liner (PN 2A1398) Inspection Locations

    Combustion Chamber Inner Liner (PN 2A1398) Inspection Locations

    Figure: Combustion Chamber Inner Liner Inspection Locations

    Combustion Chamber Inner Liner Inspection Locations

    Figure: Combustion Chamber Inner Liner (PN 2A1617) Inspection Locations

    Combustion Chamber Inner Liner (PN 2A1617) Inspection Locations

    Figure: Combustion Chamber Inner Liner Inspection Locations

    Combustion Chamber Inner Liner Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised steps. (17VC582)