TASK 72-50-53-200-013 No. 5 Bearing Carbon Seal Housing - Examine, Inspection-013

DMC:V2500-A0-72-50-5302-01A-300A-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 72-50-53-200-013 No. 5 Bearing Carbon Seal Housing - Examine, Inspection-013

Effectivity

FIG/ITEM

PART NO.

21-020

2A1365

General

This TASK gives the procedure for the inspection of the No. 5 bearing seal housing. For the other parts of the exhaust case and fittings refer to TASK 72-50-53-200-000 (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 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-50-53-100-000 (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.

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

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 Process

Surface Protection

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-230-079-001 Examine the No. 5 Bearing Seal Housing (21-020) for Cracks

    1. Clean the part. Refer to TASK 72-50-53-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        No. 5 bearing seal housing

        SPM TASK 70-23-01-230-501 (Dip or spray)

        1. Cracked

        1. Reject

        2. Trough porosity

        1. Reject

    2. SUBTASK 72-50-53-230-079-002 Examine the No. 5 Bearing Seal Housing (21-020) for Cracks

    1. Clean the part. Refer to TASK 72-50-53-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        No. 5 bearing seal housing

        SPM TASK 70-23-02-230-501 (Dip or spray)

        1. Cracked

        1. Reject

        2. Trough porosity

        1. Reject

    3. SUBTASK 72-50-53-220-166 Examine the No. 5 Bearing Seal Housing (21-020) Outer Diameter at Location 4870

    1. Refer to: Figure

      2. Examine the housing diameter and perpendicularity.

        1. Diameter.

          1. Must be between 5.753 and 5.754 in. (146.127 and 146.151 mm)

          1. Accept

          2. If less than 5.753 in. (146.127 mm)

          1. Repair, VRS3121 TASK 72-50-53-300-066 (REPAIR-066)

        2. Perpendicularity.

          1. Must be in 0.001 in. (0.025 mm) FIR in relation to surface B.

          1. Accept

          2. Other than (a)

          1. Repair, VRS3121 TASK 72-50-53-300-066 (REPAIR-066)

    4. SUBTASK 72-50-53-220-167 Examine the No. 5 Bearing Seal Housing (21-020) at Location 1

    1. Refer to Figure.

      2. Examine the seal housing diameter and concentricity.

        1. Diameter.

          1. Must be between 5.197 and 5.199 in. (132.00 and 132.05 mm).

          1. Accept

          2. If more than 5.199 in. (132.05 mm).

          1. Repair, VRS3126 TASK 72-50-53-300-067 (REPAIR-067)

        2. Circular runout.

          1. Must be in 0.001 in. (0.03 mm) FIR in relation to diameter A.

          1. Accept

          2. Other than (a)

          1. Repair, VRS3126 TASK 72-50-53-300-067 (REPAIR-067)

    5. SUBTASK 72-50-53-220-168 Examine the No. 5 Bearing Carbon Seal Housing (21-020) at Location 2275

    1. Refer to Figure.

      2. Examine the carbon seal housing diameter and concentricity.

        1. Diameter.

          1. Must be between 5.551 and 5.555 in. (141.00 and 141.10 mm)

          1. Accept

          2. If more than 5.555 in. (141.10 mm)

          1. Repair, VRS3127 TASK 72-50-53-300-068 (REPAIR-068)

        2. Circular runout.

          1. Must be in 0.002 in. (0.05 mm) FIR in relation to diameter A.

          1. Accept

          2. Other than (a)

          1. Repair, VRS3127 TASK 72-50-53-300-068 (REPAIR-068)

      3. Examine the carbon seal housing for grooves, raised material, nicks, scratches or dents.

        1. Grooved circumferential at Area A.

          1. Up to 0.003 in. (0.076 mm) in depth

          1. Accept

          2. More than (a)

          1. Repair, VRS3127 TASK 72-50-53-300-068 (REPAIR-068)

        2. Raised material at Area A

        1. Repair, VRS3127 TASK 72-50-53-300-068 (REPAIR-068)

        3. Nicks, scratches or dents at Area B.

          1. Up to 0.005 in. (0.127 mm) in depth

          1. Accept

          2. More than (a)

          1. Reject

    6. Figure: No. 5 Bearing Carbon Seal Housing Inspection Locations

    No. 5 Bearing Carbon Seal Housing Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE