TASK 72-31-13-200-001-A00 LPC Fan Blade Front Retaining Ring - Examine The LPC Fan Blade Front Retaining Ring

DMC:V2500-A0-72-31-1300-00A-310A-C|Issue No:002.00|Issue Date:2014-11-01

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 72-31-13-200-001-A00 LPC Fan Blade Front Retaining Ring - Examine The LPC Fan Blade Front Retaining Ring

Effectivity

FIG/ITEM

PART NO.

01-160

5A6079

General

This TASK gives the procedure for the inspection of the LPC front blade retaining ring.

A ** following the repair referenced in this procedure 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.

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 TASK 72-31-13-100-000 (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 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 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 must 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/SUBTASK 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 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 72-31-13-230-051 Examine the Front Blade Retaining Ring (01-160) for Cracks

    1. Clean the part. Refer to TASK 72-31-13-100-000 (CLEANING-000).

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

        1. Front blade retaining ring.

          1. Cracked

          1. Refer to the SPM TASK 70-23-03-230-501

        2. Spacer.

          1. Cracked

          1. Repair, VRS1168 TASK 72-31-13-300-005 (REPAIR-005)

    2. SUBTASK 72-31-13-220-052 Examine the LPC Front Blade Retaining Ring (01-160) Blade Abutment Face

    1. Refer to Figure.

      2. Examine the blade abutment face at location 1.

        1. Nicked, dented, scratched, gouged, galled, worn or contact marks.

          1. Not more than 0.002 in. (0.05 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step, if the limits in Step, Step and Step are satisfactory:

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. Runout is not more than 0.0019 in. (0.050 mm) in relation to surface B and diameter C.

          3. Radial width of the damaged area is within the limits of VRS1005.

          4. Circumferential length of each individual damaged area is not more than 0.78 in. (20 mm).

          3. More than in Step or Step, if the number of damaged areas is not more than three places.

          1. Repair, VRS1136 (TASK 72-31-13-300-XXX)**.

          4. If the limits in Step or Step are not satisfactory.

          1. Reject.

    3. SUBTASK 72-31-13-220-079 Examine the LPC Front Blade Retaining Ring Timing Mark

    1. Refer to Figure.

      2. Examine the timing mark at location 15.

        1. Missing of yellow paint

        1. Repair, VRS1173 TASK 72-31-13-300-006 (REPAIR-006)

    4. SUBTASK 72-31-13-220-053 Examine the LPC Front Blade Retaining Ring (01-160) Filler Abutment Face

    1. Refer to Figure.

      2. Examine the filler abutment face at location 2.

        1. Galled.

          1. Up to 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    5. SUBTASK 72-31-13-220-054 Examine the LPC Front Blade Retaining Ring (01-160) Disk Abutment Face

    1. Refer to Figure.

      2. Examine the disk abutment face at location 3.

        1. Galled.

          1. Up to 0.003 in. (0.07 mm) in depth provided less than 25 percent of the contact area is affected

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    6. SUBTASK 72-31-13-220-055 Examine the LPC Front Blade Retaining Ring (01-160) Inlet Cone Abutment Face

    1. Refer to Figure.

      2. Examine the inlet cone abutment face at location 4.

        1. Galled.

          1. Up to 0.003 in. (0.07 mm) in depth provided less than 25 percent of the contact area is affected

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    7. SUBTASK 72-31-13-220-056 Examine the LPC Front Blade Retaining Ring (01-160) Front Face

    1. Refer to Figure.

      2. Examine the front face at location 5.

        1. Galled.

          1. Up to 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    8. SUBTASK 72-31-13-220-057 Examine the LPC Front Blade Retaining Ring (01-160) Bolt Holes

    1. Refer to Figure.

      2. Examine the bolt holes at locations 6, 7 and 13.

        1. Burrs.

          1. Edges burred

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

    9. SUBTASK 72-31-13-220-058 Examine the LPC Front Blade Retaining Ring (01-160) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at location 0103.

        1. Scored.

          1. Up to 0.003 in. (0.07 mm) in depth provided removal does not cause loss of interference

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Worn.

          1. If the snap diameter is between 13.8977 and 13.8998 in. (353.000 and 353.057 mm)

          1. Accept

        2. Write down the dimension of the diameter

          3. More than 13.8998 in. (353.057 mm)

          1. Reject

    10. SUBTASK 72-31-13-220-059 Examine the LPC Front Blade Retaining Ring (01-160) Snap Diameter

    1. Refer to Figure.

      2. Examine the snap diameter at location 5150.

        1. Scored.

          1. Up to 0.003 in. (0.07 mm) in depth provided removal does not cause loss of interference

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Worn.

          1. If the snap diameter is between 14.2959 and 14.2992 in. (363.114 and 363.201 mm)

          1. Accept

        2. Write down the dimension of the diameter

          3. Less than 14.2959 in. (363.114 mm)

          1. Reject

    11. SUBTASK 72-31-13-220-060 Examine the LPC Front Blade Retaining Ring (01-160) Outside Diameter

    1. Refer to Figure.

      2. Examine the outside diameter at location 10.

        1. Nicked.

          1. Up to 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Scratched.

          1. Up to 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        3. Dented.

          1. Up to 0.003 in. (0.07 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    12. SUBTASK 72-31-13-220-061 Examine the LPC Front Blade Retaining Ring (01-160) Pin Holes

    1. Refer to Figure.

      2. Examine the pin holes at location 11.

        1. Scored.

          1. Up to 0.002 in. (0.05 mm) in depth provided removal does not cause loss of interference

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Worn.

          1. If the pin hole is between 0.7087 and 0.7097 in. (18.000 and 18.027 mm)

          1. Accept

          2. If the pin hole is more than 0.7097 in. (18.027 mm)

          1. Reject

    13. SUBTASK 72-31-13-220-062 Examine the LPC Front Blade Retaining Ring (01-160) Pin Holes

    1. Refer to Figure.

      2. Examine the pin holes at location 12.

        1. Burrs.

          1. Edges burred

          1. Repair, VRS1005 TASK 72-31-13-100-000 (REPAIR-001)

    14. SUBTASK 72-31-13-220-063 Examine the LPC Front Blade Retaining Ring (01-160) Shank Nuts

    1. Refer to Figure.

      2. Examine the shank nuts at location 14.

        1. Loose or damaged

        1. Repair, VRS1161 TASK 72-31-13-300-003 (REPAIR-003)

    15. SUBTASK 72-31-13-220-085 Examine the LPC Front Blade Retaining Ring Timing Marking

    1. Refer to Figure.

      2. Examine the timing marking at location 15.

        1. Missing of yellow paint

        1. Repair, VRS1173 TASK 72-31-13-300-006 (REPAIR-006)

    16. SUBTASK 72-31-13-220-086 Examine the LPC Front Blade Retaining Ring Aft Flange Front Surface

    1. Refer to Figure.

      2. Examine the aft flange front surface at location 16.

        1. Nicked.

          1. Not more than 0.0027 in. (0.069 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Dented.

          1. Not more than 0.0039 in. (0.100 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        3. Scratched.

          1. Not more than 0.0039 in. (0.100 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    17. SUBTASK 72-31-13-220-088 Examine the LPC Front Blade Retaining Ring Spacer Wall

    1. Refer to Figure.

      2. Examine the spacer wall at location 17.

        1. Nicked, dented, scratched or gouged at front face.

          1. Not more than 0.036 in. (0.92 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Nicked, dented, scratched or gouged at the remaining surfaces.

          1. Not more than 0.011 in. (0.30 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    18. SUBTASK 72-31-13-220-089 Examine the LPC Front Blade Retaining Ring Shank Nut Anti Rotation Land

    1. Refer to Figure.

      2. Examine the shank nut anti rotation land at location 18.

        1. Nicked, dented, scratched or gouged.

          1. Not more than 0.011 in. (0.30 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

    19. SUBTASK 72-31-13-220-095 Examine the LPC Front Blade Retaining Ring (01-160) Locating Pin Holes

    1. Refer to Figure.

      2. Examine the locating pin holes at location 19.

        1. Gouged or rubbed at chamfer.

          1. Not more than 0.008 in. (0.20 mm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        2. Gouged or rubbed at hole bore.

          1. Not more than 0.008 in. (0.20 mmm) in depth

          1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

          2. More than in Step

          1. Reject

        3. Burred

        1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

    20. SUBTASK 72-31-13-220-096 Examine the LPC Front Blade Retaining Ring (01-160) Threaded Holes

    1. Refer to Figure.

      2. Examine the threaded holes at location 20.

        1. Burred

        1. Repair, VRS1005 TASK 72-31-13-300-001 (REPAIR-001)

    21. SUBTASK 72-31-13-220-097 Examine the LPC Front Retaining Ring (01-160) Aft Flange Front Surface Root

    1. Refer to Figure.

      2. Examine the root at Location 21.

        1. Nicked, scratched or scored.

        1. Refer to VRS1005, TASK 72-31-13-300-001 (REPAIR-001).

    22. SUBTASK 72-31-13-220-098 Examine the LPC Front Retaining Ring (01-160) Blade Abutment Face Front Surface Root

    1. Refer to Figure.

      2. Examine the root at Location 22.

        1. Gouged or scratched.

        1. Refer to VRS1005, TASK 72-31-13-300-001 (REPAIR-001).

    23. SUBTASK 72-31-13-220-099 Examine the LPC Front Retaining Ring (01-160) Rear Outside Diameter

    1. Refer to Figure.

      2. Examine the rear outside diameter at Location 23.

        1. Gouged or scratched.

        1. Refer to VRS1005, TASK 72-31-13-300-001 (REPAIR-001).

    24. SUBTASK 72-31-13-220-100 Examine the LPC Front Retaining Ring (01-160) Front Outside Diameter

    1. Refer to Figure.

      2. Examine the front outside diameter at Location 24.

        1. Nicked, scratched, scored or gouged.

        1. Refer to VRS1005, TASK 72-31-13-300-001 (REPAIR-001).

    25. Figure: Locations on the Front Blade Retaining Ring

    Locations on the Front Blade Retaining Ring

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised LPC front blade inspection. (87VJ307J)