TASK 72-32-26-200-001 No. 3 Bearing Nut - Examine, Inspection-001

DMC:V2500-A0-72-32-2601-00A-300A-C|Issue No:001.00|Issue Date:2014-05-01

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

All

Common Information

TASK 72-32-26-200-001 No. 3 Bearing Nut - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-300

5A1000

General

This TASK gives the procedure for the inspection of the No. 3 bearing nut. For the other internal gearbox driving gear parts, refer to TASK 72-32-26-200-000.

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 72-32-26-100-000.

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

NOTE

  1. To identify the consumable materials refer to the PCI.

  2. Other consumable materials are given in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-005 SOLVENT CLEANER72190CoMat 01-005
CoMat 06-011 MAGNETIC PARTICLES, FLUORESCENT, DRY POWDERLOCALCoMat 06-011

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-26-240-051 Examine the No. 3 Bearing Nut (01-300) for Cracks

      NOTE

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

    1. Clean the part. Refer to TASK 72-32-26-100-000.

      NOTE

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

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

        PART IDENT

        PROCEDURE

        CURRENT/INSPECT

        TASK/OP

        No. 3 bearing

        nut

        TB using

        continuous wet

        or simultaneous

        inking with the

        500 amp.

        Nut outside diameter. Visually examine for longitudinal and radial defects. Do the check for doubtful indications using low power magnification.

        If necessary, examine under white light at X15 binocular.

        Flange area.

        Examine as for shaft outside diameter

        1-turn solenoid continuous wet or simultaneous inking

        6000 A/T.

        Do again the

        magnetization

        and inspection

        along nut

        length.

        Visually examine for circumferential defects. Do the check for doubtful indications using low power magnification. If necessary, examine under white light at X15 binocular

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-26-220-052 Examine the No. 3 Bearing Nut (01-300) Slot

    1. Refer to: Figure

      2. Examine the slot at location 1.

        1. Burred.

          1. Any burrs

          1. Repair, VRS1238 TASK 72-32-26-300-001

        2. Nicked.

          1. Any nicks

          1. Repair, VRS1238 TASK 72-32-26-300-001

        3. Scored.

          1. Any scores

          1. Repair, VRS1238 TASK 72-32-26-300-001

    3. SUBTASK 72-32-26-220-053 Examine the No. 3 Bearing Nut (01-300) Contact Area

    1. Refer to Figure.

      2. Examine the contact area at location 2.

        1. Galled.

          1. Any galls

          1. Repair, VRS1238 TASK 72-32-26-300-001

        2. Scored.

          1. Any scores

          1. Repair, VRS1238 TASK 72-32-26-300-001

    4. SUBTASK 72-32-26-220-054 Examine the No. 3 Bearing Nut (01-300) Threads

    1. Refer to Figure.

      2. Examine the threads at location 3.

        1. Scored.

          1. Up to three scored threads, with not more than two scored threads being adjacent, if:

            1. One of the first three threads is scored up to 0.005 in. (0.127 mm) in depth and it is not more than an arc or 90 degrees

            1. Accept

            2. The remaining threads are scored up to 0.005 in. (0.127 mm) in depth and it is not more than an arc of 180 degrees

            1. Accept

          2. More than in Step or Step

          1. Reject

        2. Any pick-up

        1. Repair, VRS1238 TASK 72-32-26-300-001

        3. Any dry film lubricant that is not there

        1. Repair, VRS1237 TASK 72-32-26-300-002

    5. SUBTASK 72-32-26-220-055 Examine the No. 3 Bearing Nut (01-300) Outside Diameter

    1. Refer to Figure.

      2. Examine the outside diameter at location 4.

        1. Scored.

          1. Any scores

          1. Repair, VRS1238 TASK 72-32-26-300-001

    6. SUBTASK 72-32-26-220-056 Examine the No. 3 Bearing Nut (01-300) Oil Hole

    1. Refer to Figure.

      2. Examine the oil holes at location 5.

        1. Any sludges and plugs

        1. Clear using CoMat 01-005 SOLVENT CLEANER and clean shop air

    7. SUBTASK 72-32-26-220-057 Examine the No. 3 Bearing Nut (01-300) Oil Catcher Groove

    1. Refer to Figure.

      2. Examine the oil catcher groove at location 6.

        1. Any sludges

        1. Clear using CoMat 01-005 SOLVENT CLEANER and clean shop air

    8. Figure: Locations on the No. 3 bearing nut

    Locations on the No. 3 bearing nut

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:72190
Enterprise Name:EXXON MOBIL CHEMICALS
BU Name:EXXON MOBIL CHEMICALS
P.O. Box:P.O. BOX 3272
City:HOUSTON
State:TX
Zip Code:77001
Country:USA
Phone Number:1-281-870-6000
Fax Number:1-281-870-6661
Internet:www.exxonmobil.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:72190
Supply Number:CoMat 01-005
Type:sp01
Supply Short Name:CoMat 01-005 SOLVENT CLEANER
Supply Name:CoMat 01-005 SOLVENT CLEANER
Specification Groups:
Doc NumberType
JCR-065 (JAEC REF)EXXSOL D60
MTH 362 (MTU REF)EXXSOL D60
Suppliers:
ManufacturerRemarks
72190
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