TASK 72-44-10-200-001-B00 HPT Stage 1 Support Assembly - Examine, Inspection-001

DMC:V2500-A0-72-44-1001-00B-310A-C|Issue No:002.00|Issue Date:2014-08-01

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 72-44-10-200-001-B00 HPT Stage 1 Support Assembly - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-010

2A1358

01-060

2A0170

Detail of 2A1358

General

This TASK gives the procedure for the inspection of the stage 1 HPT support assembly.

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 the SPM TASK 70-20-00-200-501.

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

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

The procedure for those parts which must have a crack test is given in SUBTASK 72-44-10-230-054 and SUBTASK 72-44-10-230-055. Do the test before the part is visually examined.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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 the SPM.

References

Refer to the SPM for data on these items.

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

Inspection of Parts, SPM TASK 70-20-00-200-501

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

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-44-10-220-074 Examine the Stage 1 HPT Support Assembly (01-010) for Loose Nut Plate Rivets and Damaged Nut Plates with the Stage 1 HPT Seal Installed

    1. Refer to Figure.

      2. Examine the support assembly for loose nut plate rivets at location 2 and damaged nut plates at location 3.

        1. Loose rivets and damage nut plates

        1. Repair, VRS3272 TASK 72-44-10-300-002 (REPAIR-002)

    2. SUBTASK 72-44-10-220-075 Examine the Stage 1 HPT Support Assembly (01-010) for the Axial Dimension with the Stage 1 HPT Seal Installed

    1. Refer to Figure.

      2. Examine the support assembly at location 1 for the axial dimension.

        1. Axial dimension.

          1. 2.653 in. (67.386 mm) minimum

          1. Accept

          2. Other than (a)

          1. Replace by TASK 72-44-10-040-001 (DISASSEMBLY) and TASK 72-44-10-400-001 (ASSEMBLY)

    3. SUBTASK 72-44-10-220-076 Remove the Stage 1 HPT Support Seal (01-060) from the Stage 1 HPT Support Assembly (01-010)

      NOTE

      The stage 1 HPT seal must be removed to do the remaining inspections.

    1. Remove the stage 1 HPT seal from the stage 1 HPT support assembly by the procedures given in TASK 72-44-10-040-001 (DISASSEMBLY).

    4. SUBTASK 72-44-10-230-054-001 Examine the Stage 1 HPT Support Assembly (01-010) for Cracks

    1. Refer to Figure.

    2. Clean the part. Refer to TASK 72-44-10-100-000 (CLEANING-000).

      3. Do the test for cracks on the part that is given below. Look carefully at the bolt hole flange area at location 1, the vane groove at location 5, all the fillet radii at locations 1, 5, 6 and 7 and the rear inner diameter lip at location 4. Use the applicable penetrant inspection procedure.

        PART IDENT TASK/SUBTASK

        Stage 1 HPT support assembly

        (Dip or Electrostatic

        Spray)

        1. Cracks which go outward from the bolt hole surface at location 1 that are less than 0.060 in. (1.52 mm) long

        1. Repair, VRS3650 TASK 72-44-10-300-022 (REPAIR-022)

        2. Cracks which go outward from the bolt hole surface at location 1 that are longer than 0.060 in. (1.52 mm)

        1. Repair, VRS3649 TASK 72-44-10-300-023 (REPAIR-023)

        3. Other than (1) and (2)

        1. Reject

    5. SUBTASK 72-44-10-230-054-002 Examine the Stage 1 HPT Support Assembly (01-010) for Cracks

    1. Refer to Figure.

    2. Clean the part. Refer to TASK 72-44-10-100-000 (CLEANING-000).

      3. Do the test for cracks on the part that is given below. Look carefully at the bolt hole flange area at location 1, the vane groove at location 5, all the fillet radii at locations 1, 5, 6 and 7 and the rear inner diameter lip at location 4. Use the applicable penetrant inspection procedure.

        PART IDENT TASK/SUBTASK

        Stage 1 HPT support assembly

        (Dip or Electrostatic

        Spray)

        1. Cracks which go outward from the bolt hole surface at location 1 that are less than 0.060 in. (1.52 mm) long

        1. Repair, VRS3650 TASK 72-44-10-300-022 (REPAIR-022)

        2. Cracks which go outward from the bolt hole surface at location 1 that are longer than 0.060 in. (1.52 mm)

        1. Repair, VRS3649 TASK 72-44-10-300-023 (REPAIR-023)

        3. Other than (1) and (2)

        1. Reject

    6. SUBTASK 72-44-10-220-077 Examine the Stage 1 HPT Support Assembly (01-010) for Contact Wear, Corrosion, Dents, Nicks and Scratches

    1. Refer to Figure.

      2. Examine the support assembly for contact wear, corrosion, dents, nicks and scratches.

        1. Corrosion and nicks

        1. Repair, VRS3273 TASK 72-44-10-300-003 (REPAIR-003)

          2. Scratches, contact wear, nicks, surface damage (burrs).

            1. Not more than 0.005 in. (0.13 mm) in depth with no sharp edges

            1. Accept

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

            1. Repair, VRS3273 TASK 72-44-10-300-003 (REPAIR-003)

            3. Contact wear/fretting more than 0.015 in. (0.38 mm) deep at location 8. Damage must not be longer than 0.550 in. (13.97 mm) and must not extend into location 7 fillet radius

            1. Repair, VRS3559 TASK 72-44-10-300-019 (REPAIR-019)

            4. Contact wear/fretting more than 0.015 in. (0.38 mm) deep at location 9. Damage must not be longer than 0.200 in. (5.08 mm), must not extend into location 7 fillet radius and must not extend into location 10 bolt holes

            1. Repair, VRS3559 TASK 72-44-10-300-019 (REPAIR-019)

            5. Other than (a), (b), (c) or (d)

            1. Reject

          3. Dents.

            1. Round bottom dents not more than 0.250 in. (6.35 mm) in diameter and 0.010 in. (0.25 mm) in depth

            1. Accept

            2. Dents on the outer diameter flange at location 1

            1. Repair, VRS3273 TASK 72-44-10-300-003 (REPAIR-003)

            3. Other than (a) and (b)

            1. Repair, VRS3273 TASK 72-44-10-300-003 (REPAIR-003), Repair, VRS3619 TASK 72-44-10-300-024 (REPAIR-024)

    7. SUBTASK 72-44-10-220-078 Examine the Stage 1 HPT Support Assembly (01-010) for Wear on the Rear Seal Groove

    1. Refer to Figure.

      2. Examine the support assembly at location 4 for wear on the rear seal groove.

        1. Wear

        1. Reject

    8. SUBTASK 72-44-10-220-079 Examine the Stage 1 HPT Support Assembly (01-010) for Plugged Metering Holes

    1. Refer to Figure.

      2. Examine the support assembly at location 3 for plugged metering holes.

        1. Plugged holes

        1. Repair, VRS3460 TASK 72-44-10-300-006 (REPAIR-006)

    9. SUBTASK 72-44-10-220-080 Examine the Stage 1 HPT Support Assembly (01-010) for Plasma Spray Coat that is Chipped or not There on the Outer Rear Diameter

    1. Refer to Figure.

      2. Examine the support assembly at location 2 for plasma spray coat that is chipped or not there.

        1. Plasma coat that is chipped or not there

          1. Not more than five per cent of the total area and not more than 0.500 in. (12.7 mm) in a continuous length

          1. Accept

          2. Other than (a)

          1. Repair, VRS3129 TASK 72-44-10-300-007 (REPAIR-007)

    10. SUBTASK 72-44-10-220-081 Examine the Stage 1 HPT Support Assembly (01-010) Rear Flange Inner Diameter for Parallelism

    1. Refer to Figure.

      NOTE

      If the measured dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface F is flat by 0.005 in. (0.13 mm) and Diameter G maintains a clearance envelope of 28.242 in. (717.35 mm) in a free or held condition. Hold the support assembly only on Surfaces F and H and on Diameter G.

      2. Examine the support assembly at location 3 for parallelism.

        1. Parallel.

          1. Must be parallel within 0.005 in. (0.13 mm) to the front outer diameter flange rear surface

          1. Accept

          2. Other than (a)

          1. Reject

    11. SUBTASK 72-44-10-220-082 Examine the Stage 1 HPT Support Assembly (01-010) for the Outer Diameter on the Front and Rear Flanges

    1. Refer to Figure.

      NOTE

      1. The diameters at location 2252 and 2253 are offset as shown in Figure.

      2. If the measured dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface F is flat by 0.005 in. (0.13 mm) and Diameter G maintains a clearance envelope of 28.242 in. (717.35 mm) in a free or held condition. Hold the support assembly only on Surfaces F and H and on Diameter G.

      2. Examine the support assembly at locations 2252 and 2253 for the outer diameter on the front and rear flanges.

        1. If the diameter is between 28.235 in. and 28.241 in. (717.17 and 717.32 mm)

        1. Accept

        2. Write down the dimension of the diameter.

        2. If the diameter is between 28.230 in. and 28.241 in. (717.04 and 717.32 mm)

        1. Accept the part for select fit only

          NOTE

          This part can be used only if the mating part has a diameter that will result in a fit of Reference No.2252 and 2253. Refer to TASK 72-00-44-420-001-001 (INSTALLATION-001) and TASK 72-00-45-420-001-A01 (INSTALLATION-001, CONFIG-001).

        2. Write down the dimension of the diameter.

        3. Minimum diameter 28.190 in. (716.03 mm) at location 2253

        1. Repair, VRS3129 TASK 72-44-10-300-007 (REPAIR-007)

        4. Minimum diameter 28.190 in. (716.03 mm) at location 2252

        1. Repair, VRS3270 TASK 72-44-10-300-008 (REPAIR-008)

    12. SUBTASK 72-44-10-220-083 Examine the Stage 1 HPT Support Assembly (01-010) for the Outer Diameter Flange and the Center Flange Thickness

    1. Refer to Figure.

      2. Examine the support assembly at location 1 for the outer diameter flange thickness.

        1. Thickness.

          1. If the dimension is between 0.105 in. and 0.112 in. (2.67 and 2.84 mm)

          1. Accept

          2. Other than (a)

          1. Reject

      3. Examine the support assembly at location 4 for the center flange thickness.

        1. Thickness.

          1. If the dimension is between 0.110 in. and 0.120 in. (2.79 and 3.05 mm)

          1. Accept

          2. If the dimension is between 0.098 in. (2.489 mm) and less than 0.110 in. (2.794 mm)

          1. Refer to Repair-028 (VRS3818) TASK 72-44-10-300-028.

          3. Other than Step or Step.

          1. Reject

    13. SUBTASK 72-44-10-220-084 Examine the Stage 1 HPT Support Assembly (01-010) for the Rear Seal Diameter

    1. Refer to Figure.

      NOTE

      If the measured dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface F is flat by 0.005 in. (0.13 mm) and Diameter G maintains a clearance envelope of 28.242 in. (717.35 mm) in a free or held condition. Hold the support assembly only on Surfaces F and H and on Diameter G.

      2. Examine the support assembly at location 2001 at the gage point for the rear seal diameter.

        1. If the dimension at the gage point is between 26.965 in. and 26.969 in. (684.91 and 685.01 mm)

        1. Accept

        2. Write down the dimension of the diameter.

        2. Other than (a)

        1. Reject

    14. SUBTASK 72-44-10-220-085 Examine the Stage 1 HPT Support Assembly (01-010) for the Vane Groove Width Dimension

    1. Refer to Figure.

      NOTE

      If the measured dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface F is flat by 0.005 in. (0.13 mm) and Diameter G maintains a clearance envelope of 28.242 in. (717.35 mm) in a free or held condition. Hold the support assembly only on Surfaces F and H and on Diameter G.

      2. Examine the support assembly at location 2002 for the vane groove width dimension.

        1. If the dimension is between 0.202 in. and 0.213 in. (5.13 and 5.41 mm)

        1. Accept

        2. Write down the dimension.

        2. Other than (a)

        1. Reject

    15. SUBTASK 72-44-10-220-086 Examine the Stage 1 HPT Support Assembly (01-010) for the Axial Dimension from the Rear Face of the Front Flange to the Rear Face of the Rear Vane Groove

    1. Refer to Figure.

      NOTE

      If the measured dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface F is flat by 0.005 in. (0.13 mm) and Diameter G maintains a clearance envelope of 28.242 in. (717.35 mm) in a free or held condition. Hold the support assembly only on Surfaces F and H and on Diameter G.

      2. Examine the support assembly at location 2 for the axial dimension.

        1. Axial dimension.

          1. If the dimension is between 2.335 in. and 2.345 in. (59.31 and 59.56 mm)

          1. Accept

          2. Other than (a)

          1. Reject

    16. SUBTASK 72-44-10-230-055-001 Examine the Stage 1 HPT Seal (01-060) for Cracks

    1. Clean the part. Refer to TASK 72-44-10-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant inspection procedure.

        PART IDENT TASK/TASK

        Stage 1 HPT seal

        (Dip or Spray)

        1. Cracked

        1. Reject

    17. SUBTASK 72-44-10-230-055-002 Examine the Stage 1 HPT Seal (01-060) for Cracks

    1. Clean the part. Refer to TASK 72-44-10-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant inspection procedure.

        PART IDENT TASK/SUBTASK

        Stage 1 HPT seal

        (Dip or Spray)

        1. Cracked

        1. Reject

    18. SUBTASK 72-44-10-220-087 Examine the Stage 1 HPT Seal (01-060) for Chipped or Flaked Plasma Spray Coating on the Rear Contact Face

    1. Refer to Figure.

      2. Examine the stage 1 HPT seal at location 6 for chipped or flaked plasma spray coating on the rear contact face.

        1. Chipped and flaked.

          1. Not more than 10 percent of plasma spray coating on contact face

          1. Accept

          2. More than 10 percent of plasma spray coating on contact face

          1. Repair, VRS3271 TASK 72-44-10-300-001 (REPAIR-001)

    19. SUBTASK 72-44-10-220-088 Examine the Stage 1 HPT Seal (01-060) for Wear on the Inner Diameter

    1. Refer to Figure.

      2. Examine the stage 1 HPT seal at location 5 for wear on the inner diameter.

        1. Wear.

          1. If the diameter is between 26.935 in. and 26.945 in (684.15 and 684.40 mm)

          1. Accept

          2. Other than (a)

          1. Reject

    20. SUBTASK 72-44-10-220-089 Examine the Stage 1 HPT Seal (01-060) for Flat and Distortion of the Original Axial Shape in a Free Condition on the Outer Diameter Rear Contact Face

    1. Refer to Figure.

      2. Examine the seal at location 1 for the 0.323 in. and 0.335 in. (8.20 and 8.51 mm) axial height shape at 25 equally spaced positions in a free condition for flat and distortion.

        1. Flat and distortion.

          1. If all the 25 measurements are 0.012 in. (0.31 mm) or less of each other

          1. Accept

          2. Other than (a)

          1. Reject

      3. Examine the seal at location 2 for a seal mark that is continuous around the full circumference on the outer diameter rear contact face.

        1. Seal mark.

          1. If the contact face has a mark that is continuous around the full circumference

          1. Accept

          2. Other than (a)

          1. Reject

    21. SUBTASK 72-44-10-220-090 Examine the Stage 1 HPT Seal (01-060) for the Axial Height Dimension and Wear on the Outer Diameter Rear Contact Face

    1. Refer to Figure.

      NOTE

      The seal may be measured in a free or held condition. If the seal is measured in a held condition, hold the seal at Surface E. The measurement in a held condition can be done with the seal installed on the stage 1 support assembly.

      2. Examine the seal at location 1 for the axial height dimension on the outer diameter rear contact face.

        1. Axial height.

          1. If the dimension is between 0.322 in. and 0.335 in. (8.18 and 8.51 mm)

          1. Accept

          2. If the dimension is less than 0.322 in. (8.18 mm)

          1. Repair, VRS3271 TASK 72-44-10-300-001 (REPAIR-001)

            NOTE

            When you use a 10X magnification glass, the coating must look more porous and rougher than the base material which will look smooth and constant.

      3. Examine the seal at location 2 for wear through the coating at the seal mark that is continuous around the full circumference on the outer diameter rear contact face. Use a 10X magnification glass.

        1. Wear.

          1. If the base material is not shown

          1. Accept

          2. Other than (a)

          1. Repair, VRS3271 TASK 72-44-10-300-001 (REPAIR-001)

    22. SUBTASK 72-44-10-220-091 Examine the Stage 1 HPT Seal (01-060) for Wear on the Inner Conical Diameter

    1. Refer to Figure.

      NOTE

      The seal conical diameter at location 2001 is 26.960 in. to 26.964 in. (684.78 to 684.89 mm). Refer to these dimensions:

      1. Location 3 is the 24 to 26 degree radius.

      2. Location 4 is the 0.078 in. (1.98 mm) dimension.

      2. Examine the stage 1 HPT seal at location 2001 for wear on the inner conical diameter.

        1. Wear.

          1. If the conical diameter is between 26.960 in. to 26.964 in. (684.78 to 684.89 mm)

          1. Accept

          2. Other than (a)

          1. Reject

    23. SUBTASK 72-44-10-220-092 Install the Stage 1 HPT Seal (01-060) on the Stage 1 HPT Support Assembly (01-010)

    1. Install the stage 1 HPT seal on the stage 1 HPT support assembly by the procedures given in TASK 72-44-10-440-001 (ASSEMBLY).

    24. Figure: Stage 1 HPT Support Assembly Inspection Locations

    Stage 1 HPT Support Assembly Inspection Locations

    Figure: Stage 1 HPT Support Assembly Inspection Locations

    Stage 1 HPT Support Assembly Inspection Locations

    Figure: Stage 1 HPT Support Assembly Inspection Locations

    Stage 1 HPT Support Assembly Inspection Locations

    Figure: Stage 1 HPT Seal Inspection Locations

    Stage 1 HPT Seal Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Modified the procedure to add Repair-028 reference. (12VC344)