TASK 72-50-41-200-003-B00 LPT Shaft - Examine, Inspection-003

DMC:V2500-A0-72-50-4101-00B-300A-C|Issue No:003.00|Issue Date:2020-05-01

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 72-50-41-200-003-B00 LPT Shaft - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-200

5A0864

01-200

5A1732

01-200

5A1762

General

This TASK gives the procedure for the inspection of the LP turbine shaft. For the other LP turbine shaft parts, refer to TASK 72-50-41-200-000 (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 the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-11-14-300-503.

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 Step and Step. Do the test before the part is visually examined. Limits for cracks are given in the SUBTASK for each part.

Do not discard any parts 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

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

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

NOTE

To identify the consumable materials, refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primar number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Magnetic particle inspection equipmentLOCALMagnetic particle inspection equipment
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment
Vickers hardness testerLOCALVickers hardness tester
Binocular 15XLOCALBinocular 15X
IAE 2J12611 Sling0AM53IAE 2J126111

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDERX222XCoMat 06-011
CoMat 06-018 FLUORESCENT PENETRANT (POST-EMULSIFIED HIGH SENSITIVITY)X222XCoMat 06-018

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-41-240-068 Examine the LP Turbine Shaft (01-200) for Cracks

      1. Do the test for cracks.

        NOTE

        1. If necessary, remove paint from the LP turbine shaft before magnetic particle inspection. Refer to TASK 72-50-41-100-000, (CLEANING-000).

        2. For the method to clean the part, refer to the SPM TASK 70-11-14-300-503.

        3. Clean as referred to in TASK 72-50-41-100-000, (CLEANING-000).

      1. Magnetic particle examine for cracks, refer to Step.

        2. Cracked

        1. Reject

    2. SUBTASK 72-50-41-220-095 Examine the LP Turbine Shaft (01-200) for Heat Discoloration

    1. Refer to Figure.

      2. Examine area Z for heat discoloration.

        NOTE

        Check hardness at minimum two positions on each heat discoloration area. If the heat discoloration is all around on circumferential surface of the shaft, check hardness equally spaced at eight positions on heat discoloration area.

        1. Do the hardness check using Vickers hardness tester or equivalent if there are heat discolorations.

          1. If hardness is 406 - 454 HV

          1. Remove heat discoloration and depression marks made by the hardness check, refer to VRS1491, TASK 72-50-41-300-003, (REPAIR-003)

          2. Other than in (a)

          1. Reject

      3. Examine the area except area Z.

        1. Heat discoloration

        1. Reject

    3. SUBTASK 72-50-41-220-096 Examine the LP Turbine Shaft (01-200) Threads

    1. Refer to Figure.

      2. Examine the threads at locations 1 and 2.

        1. Damaged

        1. Repair, VRS1492 TASK 72-50-41-300-001, (REPAIR-001)

    4. SUBTASK 72-50-41-220-097 Examine the LP Turbine Shaft (01-200) Spline

    1. Refer to Figure.

      2. Examine the spline at location 3.

        1. Galled.

          1. Not more than 0.004 in. (0.10 mm) in depth

          1. Repair, VRS1493 TASK 72-50-41-300-002, (REPAIR-002)

          2. More than (a)

          1. Reject

    5. SUBTASK 72-50-41-220-093 Examine the LP Turbine Shaft (01-200) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at location 5620.

        1. Scratched or scored.

          1. Not more than 0.004 in. (0.10 mm)

          1. Repair, VRS1491, TASK 72-50-41-300-003, (REPAIR-003)

          2. Between 0.004 and 0.006 in. (0.10 and 0.15 mm) in depth

            1. If number of damage is within 10 places

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If number of damage is more than 10 places

            1. Repair, VRS1498 TASK 72-50-41-300-004, (REPAIR-004)

          3. Between 0.006 and 0.027 in. (0.15 and 0.70 mm) in depth

            1. If distance of damage is more than 2 in. (50.6 mm)

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If distance of damage is less than 2 in. (50.6 mm)

            1. Repair, VRS1498 TASK 72-50-41-300-004, (REPAIR-004)

          4. Between 0.027 and 0.035 in. (0.70 and 0.90 mm) in depth

            1. If distance of damage is more than 2 in. (50.8 mm)

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If distance of damage is less than 2 in. (50.8 mm)

            1. Reject

          5. More than 0.035 in. (0.90 mm) in depth

          1. Reject

        2. Worn.

          1. If the snap diameter is between 3.5454 and 3.5461 in. (90.051 and 90.073 mm)

          1. Accept

          2. Less than 3.5454 in. (90.051 mm)

          1. Repair, VRS1498 TASK 72-50-41-300-004, (REPAIR-004)

    6. SUBTASK 72-50-41-220-098 Examine the LP Turbine Shaft (01-200) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at area AA location 5621.

        1. Scratched or scored.

          1. Not more than 0.004 in. (0.10 mm)

          1. Repair, VRS1491, TASK 72-50-41-300-003, (REPAIR-003)

          2. Between 0.004 and 0.006 in. (0.10 and 0.15 mm) in depth

            1. If number of damage is within 10 places

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If number of damage is more than 10 places

            1. Repair, VRS1499, TASK 72-50-41-300-005, (REPAIR-005)

          3. Between 0.006 and 0.027 in. (0.15 and 0.70 mm) in depth

            1. If distance of damage is more than 2 in. (50.8 mm)

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If distance of damage is less than 2 in. (50.8 mm)

            1. Repair, VRS1499 TASK 72-50-41-300-005, (REPAIR-005)

          4. Between 0.027 and 0.035 in. (0.70 and 0.90 mm) in depth

            1. If distance of damage is more than 2 in. (50.8 mm)

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If distance of damage is less than 2 in. (50.8 mm)

            1. Reject

          5. More than 0.035 in. (0.90 mm) in depth

          1. Reject

        2. Worn.

          1. If the snap diameter is between 3.9385 and 3.9393 in. (100.037 and 100.059 mm)

          1. Accept

          2. Less than 3.9385 in. (100.037 mm)

          1. Repair, VRS1499 TASK 72-50-41-300-005, (REPAIR-005)

      3. Examine the snap diameter at area AB of location 5621.

        1. Scratched or scored.

          1. Not more than 0.004 in. (0.10 mm)

          1. Repair, VRS1491, TASK 72-50-41-300-003, (REPAIR-003)

          2. Between 0.004 and 0.006 in. (0.10 and 0.15 mm) in depth

            1. If number of damage is within 10 places

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If number of damage is more than 10 places

            1. Repair, VRS1499, TASK 72-50-41-300-005, (REPAIR-005)

          3. Between 0.006 and 0.035 in. (0.15 and 0.90 mm) in depth

            1. If distance of damage is more than 2 in. (50.8 mm)

            1. Repair, VRS1493, TASK 72-50-41-300-002, (REPAIR-002)

            2. If distance of damage is less than 2 in. (50.8 mm)

            1. Reject

          4. More than 0.035 in. (0.90 mm) in depth

          1. Reject

        2. Worn.

          1. If the snap diameter is between 3.9385 and 3.9393 in. (100.037 and 100.059 mm)

          1. Accept

          2. Less than 3.9385 in. (100.037 mm)

          1. Repair, VRS1499 TASK 72-50-41-300-005, (REPAIR-005)

    7. SUBTASK 72-50-41-220-099 Examine the LP Turbine Shaft (01-200) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at location 6.

        1. Nicked and Scratched.

          1. Not more than 0.004 in. (0.10 mm) in depth

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. More than (a)

          1. Reject

        2. Worn.

          1. If the snap diameter is between 8.9764 and 8.9776 in. (228.000 and 228.032 mm)

          1. Accept

          2. If the snap diameter is more than 8.9776 in. (228.032 mm)

          1. Repair, VRS1496 TASK 72-50-41-300-006, (REPAIR-006)

    8. SUBTASK 72-50-41-220-094 Examine the LP Turbine Shaft (01-200) Bearing Journal

    1. Refer to Figure.

      2. Examine the bearing journal at location 7.

        1. Scored.

          1. Not more than 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1497 TASK 72-50-41-300-007, (REPAIR-007)

          2. More than (a)

          1. Reject

        2. Galled.

          1. Not more than 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1497 TASK 72-50-41-300-007, (REPAIR-007)

          2. More than (a)

          1. Reject

        3. Worn.

          1. If the snap diameter is between 3.6224 and 3.6228 in. (92.008 and 92.020 mm)

          1. Accept

          2. Less than 3.6224 in. (92.008 mm)

          1. Repair, VRS1497 TASK 72-50-41-300-007, (REPAIR-007)

    9. SUBTASK 72-50-41-220-100 Examine the LP Turbine Shaft (01-200) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at location 8.

        1. Nicked and scratched.

          1. Not more than 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. More than (a)

          1. Reject

        2. Worn.

          1. If the snap diameter is between 3.7392 and 3.7397 in. (94.975 and 94.990 mm)

          1. Accept

          2. Less than 3.7392 in. (94.975 mm)

          1. Repair, VRS1502 TASK 72-50-41-300-008, (REPAIR-008)

    10. SUBTASK 72-50-41-220-101 Examine the LP Turbine Shaft (01-200) Face

    1. Refer to Figure.

      2. Examine the face at location 9.

        1. Galled.

          1. Light galling

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. Heavy galling

          1. Reject

    11. SUBTASK 72-50-41-220-102 Examine the LP Turbine Shaft (01-200) Bolt Holes

    1. Refer to Figure.

      2. Examine the bolt holes at location 10.

        1. Scored.

          1. Light axial scores

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. Heavy axial scores

          1. Reject

    12. SUBTASK 72-50-41-220-103 Examine the LP Turbine Shaft (01-200) Oil Holes

    1. Refer to Figure.

      2. Examine the oil supply holes at location 11.

        1. Plugged

        1. Clear with high pressure air blast

    13. SUBTASK 72-50-41-220-104 Examine the LP turbine Shaft (01-200) Tangs

    1. Refer to Figure.

      2. Examine the tangs (forward and aft end) at location 12.

        1. Bent.

          1. If there are no cracks after local fluorescent penetrant inspection and there is no interference with installation of locking ring, refer to the SPM TASK 70-23-05-230-501. Use CoMat 06-018 FLUORESCENT PENETRANT (POST-EMULSIFIED HIGH SENSITIVITY).

          1. Accept

          2. More than (a)

          1. Reject

        2. Grooved, nicked, dented and scratched.

          1. Not more than 0.019 in. (0.50 mm) in depth

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. More than (a)

          1. Reject

        3. Missing material.

          1. Not more than 0.098 in. (2.5 mm) in axial direction and not more than 0.098 in. (2.5 mm) in circumferential direction at corner from one side

          1. Repair, VRS1491 TASK 72-50-41-300-003 (REPAIR-003)

          2. More than in (a)

          1. Reject

    14. SUBTASK 72-50-41-220-105 Examine the LP Turbine Shaft (01-200) OD Surface

    1. Refer to Figure.

      2. Examine the OD surface at location 13.

        1. Nicked and scratched.

          1. Not more than 0.004 in. (0.10 mm) in depth

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. More than (a)

          1. Reject

    15. SUBTASK 72-50-41-220-106 Examine the LP Turbine Shaft (01-200) ID Surface

    1. Refer to Figure.

      2. Examine the ID surface at location 14.

        1. Oil deposits

        1. Remove oil deposits

    16. SUBTASK 72-50-41-220-107 Examine the LP Turbine Shaft (01-200) Paint

    1. Refer to Figure.

      2. Examine the paint at location 15.

        1. Total of missing paint area and area touched up by VRS1494 is less than 100 sq in. (64516 sq mm)

        1. Repair, VRS1494 TASK 72-50-41-300-012, (REPAIR-012)

        2. More than (1)

        1. Repair, VRS1495 TASK 72-50-41-300-011, (REPAIR-011)

    17. SUBTASK 72-50-41-220-108 Examine the LP Turbine Shaft (01-200) ID Surface

    1. Refer to Figure.

      2. Examine the ID surface at location 16.

        1. Galled.

          1. Not more than 0.003 in. (0.07 mm)

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. More than (a)

          1. Reject

    18. SUBTASK 72-50-41-220-109 Examine the LP Turbine Shaft (01-200) Face

    1. Refer to Figure.

      2. Examine the face at location 17.

        1. Galled.

          1. For quantities not more than 0.003 in. (0.07 mm)

          1. Repair, VRS1491 TASK 72-50-41-300-003, (REPAIR-003)

          2. Not more than 0.0098 in. (0.25 mm) in depth if the damage area is not more than 5 per cent of the total circumferential length

          1. Repair, VRS1491 TASK 72-50-41-300-003 (REPAIR-003) or Repair, VRS1501 TASK 72-50-41-300-019, (REPAIR-019)

          3. For quantities not more than 0.0098 in. (0.25 mm) in depth

          1. Repair, VRS1501 TASK 72-50-41-300-019 (REPAIR-019)

          4. More than in (c)

          1. Reject

    19. SUBTASK 72-50-41-240-069 Do a Crack Test on the LP Turbine Shaft (01-200)

    1. NOTE

      During magnetic inspection, it is recommended to use CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDER.

      Do a crack test on the part that follows:

      PART IDENT

      PROCEDURE

      CURRENT/INSPECT

      TASK/SUBTASK

      LP turbine

      shaft

      (1) TB using continuous wet simultaneous inking with the CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDER

      2000 amp Shaft Outside diameter visually examine for longitudinal and radial defects. Check doubtful indications using low power magnification. If necessary, examine under white light at X15 binocular

      5000 amp Flange area. Examine as for shaft outside diameter

      (2) Solenoid coil using continous wet or simultaneous inking

      6500 A/T Do again the magnetisation and inspection along shaft length. Visually examine for circumferential defects. Check doubtful indications using low power magnification. If necessary, examine under white light at X15 binocular

    20. SUBTASK 72-50-41-220-110 Examine the LP Turbine Shaft (01-200) for the Engine Cycles of the Part)

    1. Refer to Figure.

    2. Examine the LP turbine shaft at location 18, for the total cycles that were marked before (at each disassembly).

      3. Calculate the new total number of the engine cycles for the LP turbine shaft ( you can get the new engine cycles from the operating records).

      1. Add the new engine cycles since the last inspection to the engine cycles that are marked on the LP turbine shaft.

    4. Do not install the LP turbine shaft if the total number of engine cycles is more than the maximum cycles given in TASK 05-10-01-200-001-A00 (GROUP A PARTS LIVES, CONFIG-001) and TASK 05-10-01-200-001-B00 (GROUP A PARTS LIVES, CONFIG-002).

      5. Mark the new total number of engine cycles on the LP turbine shaft at location 18.

      1. Vibro-engrave the new total number at location 18, refer to SPM TASK 70-09-00-400-501.

    21. Figure: Locations on the LP Turbine Shaft

    Locations on the LP Turbine Shaft

    Figure: Locations on the LP Turbine Shaft

    Locations on the LP Turbine Shaft

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Update task and limits (01VJ805G)

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:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:X222X
Supply Number:CoMat 06-011
Type:sp01
Supply Short Name:CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDER
Supply Name:CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDER
Specification Groups:
Doc NumberType
Where CoMat 06-011 is specified with no suffix, use one of the CoMat 06-011 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 06-018
Type:sp01
Supply Short Name:CoMat 06-018FLUORESCENT PENETRANT (POST-EMULSIFIED HIGH SENSITIVITY)
Supply Name:CoMat 06-018 FLUORESCENT PENETRANT (POST-EMULSIFIED HIGH SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐018 letter suffix material with other CoMat 06‐018 letter suffix materials. Where CoMat 06‐018 is specified with no suffix, use one of the CoMat 06‐018 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Binocular 15X
Tool Name:Binocular 15X
Link not Found
Manufacturer Code:0AM53
Tool Number:IAE 2J12611
Tool Name:IAE 2J12611 Sling
Manufacturer Code:LOCAL
Tool Number:Magnetic particle inspection equipment
Tool Name:Magnetic particle inspection equipment
Manufacturer Code:LOCAL
Tool Number:Vickers hardness tester
Tool Name:Vickers hardness tester