TASK 72-31-12-200-001-A00 Fan Blade Rear Retaining Ring - Examine The Fan Blade Rear Retaining Ring

DMC:V2500-A0-72-31-1202-00A-310A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-31-12-200-001-A00 Fan Blade Rear Retaining Ring - Examine The Fan Blade Rear Retaining Ring

Effectivity

FIG/ITEM

PART NO.

01-100

5A0211

General

This TASK gives the procedure for the inspection of the rear blade retaining ring. For the other LP compressor disk and location ring parts, refer to TASK 72-31-11-200-000.

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 TASK 72-31-11-100-000.

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.

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 70-20-01-200-501

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

NameManufacturerPart Number / IdentificationQuantityRemark
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-31-12-230-053 Examine the Rear Blade Retaining Ring (01-100) for Cracks

    1. Clean the part. Refer to TASK 72-31-11-100-000.

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

        PART IDENT

        TASK/SUBTASK

        Rear blade retaining ring

        TASK 72-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-31-12-220-053 Examine the Rear Blade Retaining Ring (01-100) Bolt Holes

    1. Refer to Figure.

      2. Examine the bolt holes at location 1.

        1. Burred

        1. Repair, VRS1150 TASK 72-31-12-300-002

    3. SUBTASK 72-31-12-220-054 Examine the Rear Blade Retaining Ring (01-100) Locating Holes

    1. Refer to Figure.

      2. Examine the locating holes at location 2.

        1. Burred

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Worn

          1. If the diameter of hole is not more than 0.8674 in. (22.033 mm)

          1. Accept

          2. More than in Step

          1. Reject

        3. Missing of dry film lubricant

        1. Repair, VRS1151 TASK 72-31-12-300-003

      3. Examine the locating holes at location 3.

        1. Burred

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Worn

          1. If the diameter of hole is not more than 0.401 in. (10.21 mm)

          1. Accept

          2. More than in Step

          1. Reject

    4. SUBTASK 72-31-12-220-055 Examine the Rear Blade Retaining Ring (01-100) Pin Holes

    1. Refer to Figure.

      2. Examine the pin holes at location 4.

        1. Galled

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Worn

          1. If the diameter of hole is not more than 0.240 in. (6.10 mm)

          1. Accept

          2. More than in Step

          1. Reject

    5. SUBTASK 72-31-12-220-056 Examine the Rear Blade Retaining Ring (01-100) Thread holes

    1. Refer to Figure.

      2. Examine the thread holes at location 5.

        1. Galled

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Crossed

        1. Reject

    6. SUBTASK 72-31-12-220-057 Examine the Rear Blade Retaining Ring (01-100) Front Face

    1. Refer to Figure.

      2. Examine the front face at location 6.

        1. Galled

        1. Repair, VRS1150 TASK 72-31-12-300-002

    7. SUBTASK 72-31-12-220-058 Examine the Rear Blade Retaining Ring (01-100) Edge

    1. Refer to Figure.

      2. Examine the edge at location 7.

        1. Nicked

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Scratched

        1. Repair, VRS1150 TASK 72-31-12-300-002

    8. SUBTASK 72-31-12-220-059 Examine the Rear Blade Retaining Ring (01-100) Remaining Surface

    1. Refer to Figure.

      2. Examine the remaining surfaces which does not include the identified location.

        1. Nicked

        1. Repair, VRS1150 TASK 72-31-12-300-002

        2. Scratched

        1. Repair, VRS1150 TASK 72-31-12-300-002

    9. Figure: Locations on the Rear Blade Retaining Ring

    Locations on the Rear Blade Retaining Ring

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment