TASK 72-43-13-200-001 No. 4 Bearing - Examine, Inspection-001

DMC:V2500-A0-72-43-1300-00A-310A-C|Issue No:002.00|Issue Date:2014-08-01

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 72-43-13-200-001 No. 4 Bearing - Examine, Inspection-001

Effectivity

FIG/ITEM PART NO.

01-010

2A0001

01-010

2A0003

01-010

2A0006

General

This TASK gives the procedure for the inspection of the No. 4 bearing.

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 the SPM TASK 70-10-00-100-501.

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

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501

Marking of Parts, SPM TASK 70-09-00-400-501

Procedure for Moderate Cleaning, SPM TASK 70-11-03-300-503

Procedure to Vapor Degrease, SPM TASK 70-11-01-300-503

Inspection of Parts, SPM TASK 70-20-01-200-501

Inspection of Ball and Roller Bearing, SPM TASK 70-29-01-290-501

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

NOTE

Repair VRS3526 (TASK 72-43-13-300-003) applies only to bearings 2A0001 and 2A0003. Bearing 2A0006 must be rejected whenever the bearing fails an examination, rather than be repaired by VRS3526.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Rockwell hardness testerLOCALRockwell hardness tester

No specific

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-177 PETROLEUM (SOLVENT)23373CoMat 01-177
CoMat 10-061 STODDARD SOLVENTLOCALCoMat 10-061
CoMat 12-015 CORROSION PREVENTIVE, FINGERPRINT REMOVER0AM53CoMat 12-015
CoMat 12-016 CORROSION PREVENTIVE THIN FILM2H517CoMat 12-016

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-43-13-220-051 Examine the No. 4 Bearing (01-010) for the Visual Defects

      1. Examine the bearing for the visual defects by the procedure given in the SPM TASK 70-29-01-290-501.

        1. Visual defects.

          1. Limits given in the SPM TASK 70-29-01-290-501

          1. Accept

          2. Other than (a)

          1. Repair, VRS3526 TASK 72-43-13-300-003 (Repair-003)

    2. SUBTASK 72-43-13-220-052 Examine the No. 4 Bearing (01-010) for the Average Inner Diameter

    1. Refer to: Figure

      2. Examine the bearing for the average inner diameter at location 2227.

        1. If the diameter is between 5.1175 and 5.1181in. (129.9845 and 129.9997 mm)

        1. Accept

        2. Write down the dimension of the diameter.

        2. If the diameter is between 5.1175 and 5.1188in. (129.0845 and 130.0175 mm)

        1. Accept part for select fit only

        2. NOTE

          This part can be used only if the mating part has a diameter that will result in a fit of reference No. 2227. Refer to TASK 72-40-00-430-003 (ASSEMBLY-003).

          Write down the dimension of the diameter.

          3. Other than (1) or (2)

          1. Reject

    3. SUBTASK 72-43-13-220-053 Examine the No. 4 Bearing (01-010) for the Average Outer Diameter

    1. Refer to: Figure

      2. Examine the bearing average outer diameter at location 2264.

        1. If the average diameter is between 7.555 and 7.556in. (191.897 and 191.922 mm)

        1. Accept

        2. Write down the dimension of the average diameter

          NOTE

          The outer race has an eliptical outside diameter.
          Average diameter is found by an average of the maximum outside diameter and the minimum outside diameter.
          The maximum outside diameter is within plus or minus 2 degrees of the "X" marked on the outer race side faces.
          The difference between the maximum outside diameter and the minimum outside diameter of the outer race is to be 0.015 to 0.017in (0.381 to 0.432 mm) when the inner diameter of the outer race is held round within 0.0005in (0.013 mm).

        2. If the average diameter is between 7.555 and 7.557in. (191.897 and 191.947 mm)

        1. Accept part for select fit only

        2. NOTE

          This part can be used only if the mating part has a diameter that will result in a fit of reference No. 2264. Refer to TASK 72-40-00-430-003 (ASSEMBLY-003).

          Write down the dimension of the average diameter.

        3. Other than (1) or (2)

        1. Reject

    4. SUBTASK 72-43-13-220-054 Examine the No. 4 Bearing (01-010) for the Internal Radial Clearance

      1. Examine the bearing for the internal radial clearance by the procedure given in the SPM TASK 70-29-01-290-501. Use a 44lb (19.98 kg) radial load.

        1. If the clearance is between 0.0062 and 0.0072in. (0.158 and 0.182 mm)

        1. Accept

        2. Other than (1)

        1. Reject

    5. SUBTASK 72-43-13-220-055 Examine the No. 4 Bearing (01-010) for the Hardness of the Inner and Outer Races

      NOTE

      Only do the hardness check if the bearing shows signs of high temperature discoloration.

    1. Refer to: Figure

      2. Examine the bearing for hardness at locations 1, 3 and 4. Use a Rockwell hardness tester, or equivalent. Do the test on a non-functional surface.

        1. If the hardness is between 60 and 62 HRC average, or equivalent or 59 and 63 HRC absolute, or equivalent

        1. Accept

        2. Other than (1)

        1. Reject

    6. Figure: No. 4 bearing inspection locations

    No. 4 bearing inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added new tool and modified the procedure. (PSAF13VC362)

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:23373
Enterprise Name:CHEMETALL OAKITE
BU Name:CHEMETALL OAKITE
Street:16961 KNOTT AVENUE
City:LA MIRADA
State:CA
Zip Code:90638
Country:USA
Phone Number:1-714-739-2821, 1-800-331-1197
Fax Number:1-714-670-6480
Internet:www.oakite.com
Manufacturer Code:2H517
Enterprise Name:DELETED. SEE CAGE CODE 2R128
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:23373
Supply Number:CoMat 01-177
Type:sp01
Supply Short Name:CoMat 01-177 PETROLEUM (SOLVENT)
Supply Name:CoMat 01-177 PETROLEUM (SOLVENT)
Specification Groups:
Doc NumberType
PMC 9010ARDROX 5412
JCR-107ARDROX 5412
Suppliers:
ManufacturerRemarks
23373
Manufacturer Code:LOCAL
Supply Number:CoMat 10-061
Type:sp01
Supply Short Name:CoMat 10-061 STODDARD SOLVENT
Supply Name:CoMat 10-061 STODDARD SOLVENT
Specification Groups:
Doc NumberType
PMC 9001MIL-PRF-680, TYPE II
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:X111X
Supply Number:CoMat 12-015
Type:sp01
Supply Short Name:CoMat 12-015 CORROSION PREVENTIVE, FINGERPRINT REMOVER
Supply Name:CoMat 12-015 CORROSION PREVENTIVE, FINGERPRINT REMOVER
Specification Groups:
Doc NumberType
DELETED. USE COMAT 10-017.
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:X111X
Supply Number:CoMat 12-016
Type:sp01
Supply Short Name:CoMat 12-016 CORROSION PREVENTIVE THIN FILM
Supply Name:CoMat 12-016 CORROSION PREVENTIVE THIN FILM
Specification Groups:
Doc NumberType
DELETED. USE COMAT 10‐017.
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:LOCAL
Tool Number:Rockwell hardness tester
Tool Name:Rockwell hardness tester