TASK 72-45-13-200-001-F00 HPT Stage 1 Rotating Inner Air Seal - Examine, Inspection-001

DMC:V2500-A0-72-45-1301-00F-300A-C|Issue No:003.00|Issue Date:2019-02-01

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 72-45-13-200-001-F00 HPT Stage 1 Rotating Inner Air Seal - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-020

2A3086

01-020

2A3424

General

This TASK gives the procedure for the inspection of the stage 1 HPT air seal. For the other parts of the stage 1 HPT air seal (inner), refer to TASK 72-45-13-200-000 (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 TASK 72-45-13-100-000 (CLEANING-000).

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.

The procedure for those parts which must have a crack test is given in SUBTASK 72-45-13-230-057. Do the test before the part is visually examined.

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.

References

Refer to SPM for data on these items.

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

Record and Control of the Lives of Parts, 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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-13-230-140 Examine the Stage 1 HPT Air Seal (01-020) for Soot and Oil

      1. CAUTION

        MAKE SURE THAT YOU DO THIS INSPECTION BEFORE YOU CLEAN THE PART OR CLEANING PROCEDURE WILL REMOVE THE INDICATION OF SOOT AND OIL.

        Examine the Stage 1 HPT air seal at Locations 8 and 9 for soot and oil.

        1. No soot or oil.

        1. Accept.

        2. Soot or oil.

        1. Do inspection of HPT for possible oil ignition event. Refer to TASK 72-45-00-200-801. Report all findings to IAE Technical Services.

    2. SUBTASK 72-45-13-230-057-001 Examine the Stage 1 HPT Air Seal (01-020) for Cracks

    1. Refer to Figure and Figure.

    2. Clean the part. Refer to TASK 72-45-13-100-000 (CLEANING-000).

      NOTE

      When you inspect the air seal for cracks make sure you check the important areas. These are shown in Figure.

      3. Do the test for cracks on the part that is given below. Use the applicable penetrant inspection procedure. Look carefully at the area around the holes, Location 3 (2 positions) and Location 9 (24 positions), the scallops, Location 5 and the knife-edges.

        PART IDENT

        TASK/SUBTASK

        Stage 1 HPT air seal

        (Dip or Spray)

        1. Cracked.

        1. Reject.

    3. SUBTASK 72-45-13-220-100 Examine the Stage 1 HPT Air Seal (01-020) Surfaces for Corrosion, Dents, Nicks and Scratches

    1. Refer to Figure.

      2. Examine the stage 1 HPT air seal surfaces for corrosion, dents, nicks and scratches, but do not include Location 2.

        1. Corrosion, dents, nicks and scratches.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

    4. SUBTASK 72-45-13-220-101 Examine the Stage 1 HPT Air Seal (01-020) Front Flange for Galling

    1. Refer to Figure.

      2. Examine the stage 1 HPT air seal front flange, Location 6, for galling.

        1. Galling.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

    5. SUBTASK 72-45-13-220-102 Examine the Stage 1 HPT Air Seal (01-020) for Signs of Contact with Other Parts on the Inside and Outside of the Conical and Straight Surfaces

    1. Refer to Figure.

      2. Examine the stage 1 air seal for signs of contact with other parts on the inside and outside of the conical and straight surfaces, Locations 1, 4 and 8.

        1. Contact with other parts.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

        2. Find the cause of the contact with other parts.

    6. SUBTASK 72-45-13-220-103 Examine the Stage 1 HPT Air Seal (01-020) Groove for Wear

    1. Refer to Figure.

      2. Examine the stage 1 HPT air seal groove, Location 2, for wear.

        1. Wear up to 0.002 in. (0.051 mm).

        1. Accept.

        2. Other than Step.

        1. Reject.

    7. SUBTASK 72-45-13-220-104 Examine the Stage 1 HPT Air Seal (01-020) Knife-Edges for Damage, Corrosion, Dents, Nicks, Scratches and Rolled Edges

    1. Refer to Figure.

      2. Examine the stage 1 air seal knife edges for damage, corrosion, dents, nicks, scratches and rolled edges.

        1. Damage, corrosion, dents, nicks, scratches and rolled edges.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

    8. SUBTASK 72-45-13-220-105 Examine the Stage 1 HPT Air Seal (01-020) Rear Diameter for Galling

    1. Refer to Figure.

      2. Examine the stage 1 HPT air seal, Location 1501, rear diameter for galling.

        1. Galling.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

    9. SUBTASK 72-45-13-220-106 Examine the Stage 1 HPT Air Seal (01-020) for the Rear Diameter

    1. Refer to Figure.

      NOTE

      If the measured diameter in a free condition is not satisfactory, a held condition is permitted. All dimensions apply when Surface K is flat by 0.002 in. (0.051 mm) and Diameter J maintains a clearance envelope of 8.636 in. (219.354 mm) diameter in a free or held condition. Hold the air seal only on Surfaces G and K and Diameter J.

      2. Examine the stage 1 HPT air seal, Location 1501, for the rear diameter.

        1. If the rear diameter is between 8.632 in. and 8.635 in. (219.253 mm and 219.329 mm).

        1. Accept.

        2. Write down the dimension of the diameter.

        2. Other than Step.

        1. Repair, VRS3198 TASK 72-45-13-300-002 (REPAIR-002).

    10. SUBTASK 72-45-13-220-107 Examine the Stage 1 HPT Air Seal (01-020) for the Diameter of the Knife-Edges

    1. Refer to Figure.

      2. Examine the stage 1 HPT air seal, Location 2261, for the knife-edge diameter.

        1. If the knife-edge diameter is between 9.027 in. and 9.033 in. (229.286 mm and 229.438 mm).

        1. Accept.

        2. Write down the dimension of the diameter.

        2. If the knife-edge diameter is between 9.021 in. and 9.033 in. (229.133 mm and 229.438 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. 2261. Refer to TASK 72-40-00-430-006-B00 (ASSEMBLY-006, CONFIG-002).

        2. Write down the dimension of the diameter.

        3. If the knife-edge diameter is less than 9.021 in. (229.133 mm) locally for less than 25 percent of the circumference.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

          NOTE

          Refer to Repair 001, VRS3199 TASK 72-45-13-300-001 for the acceptable limits of the missing material.

        4. Other than Step, Step or Step.

        1. Repair, VRS3557 TASK 72-45-13-300-004 (REPAIR-004).

      3. Examine the stage 1 HPT air seal, Location 2262, for the knife edge diameter.

        1. If the knife-edge diameter is between 9.127 in. and 9.133 in. (231.826 mm and 231.978 mm).

        1. Accept.

        2. Write down the dimension of the diameter.

        2. If the knife-edge diameter is between 9.121 in. and 9.133 in. (231.673 mm and 231.978 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. 2262. Refer to TASK 72-40-00-430-006-B00 (ASSEMBLY-006, CONFIG-002).

        2. Write down the dimension of the diameter.

        3. If the knife-edge diameter is less than 9.121 in. (231.673 mm) locally for less than 25 percent of the circumference.

        1. Repair, VRS3199 TASK 72-45-13-300-001 (REPAIR-001).

          NOTE

          Refer to Repair 001, VRS3199 TASK 72-45-13-300-001 for the acceptable limits of the missing material.

        4. Other than Step, Step or Step.

        1. Repair, VRS3557 TASK 72-45-13-300-004 (REPAIR-004).

    11. SUBTASK 72-45-13-220-114 Examine the Stage 1 Air Seal (01-020) for Coating Chipping

      NOTE

      Coating will be on the air seal only if the air seal was repaired before by VRS3557 TASK 72-45-13-300-004.

    1. Refer to Figure.

      2. Examine the Stage 1 Air Seal, Location 10 (both sides), for chipping.

        1. Not more than 7.00 in. (177.8 mm) in cumulative length for each seal including front and rear surfaces as shown in the figure. The chipping can expose the base metal.

        1. Accept.

        2. Greater than Step.

        1. Repair, VRS3557, TASK 72-45-13-300-004 (REPAIR-004).

    12. SUBTASK 72-45-13-220-108 Examine the Stage 1 HPT Air Seal (01-020) for the Cycle Time of the Part

    1. Refer to Figure.

    2. Examine the stage 1 HPT air seal, Location 7, for the cycle time of the part at each disassembly.

      3. Calculate the new engine run cycles.

      1. Get the part cycles from the engine records since the last shop visit (disassembly) and write the cycles down.

      2. Write down the engine run cycles marked on the part at Location 7.

      3. Add the results of Step and Step. The result is the new engine run cycles.

      4. Make a mark for the new cycle time of the part on the air seal.

        1. Make a mark on the air seal at Location 7, which is located up to 0.300 in. (7.620 mm) from the front of the front flange.

        1. Make a permanent mark by the procedures given in SPM TASK 70-09-00-400-501.

        2. Use the vibration peen method, the dot peen, deep method or the electrolytic etch, deep method.

        2. Examine the part at Location 6 for burns, pitting and selective attack.

          1. Burns, pitting or selective attack.

          1. Reject.

    13. Figure: Stage 1 HPT Air Seal Inspection Locations

    Stage 1 HPT Air Seal Inspection Locations

    Figure: Stage 1 HPT Air Seal Important FPI Inspection Locations

    Stage 1 HPT Air Seal Important FPI Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised steps and figure 1. (18VC315)