TASK 72-43-20-300-018 No. 4 Bearing Seal Ring Holder - Rear Flange Inner Diameter (ID) Restoration Repair, Repair-018 (VRS3797)

DMC:V2500-A0-72-43-2001-00A-609A-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 72-43-20-300-018 No. 4 Bearing Seal Ring Holder - Rear Flange Inner Diameter (ID) Restoration Repair, Repair-018 (VRS3797)

Effectivity

FIG/ITEM PART NO.

01-060

2A0847

01-060

2A3543

Material of component

IAE

DESCRIPTION SYMBOL MATERIAL

No. 4 bearing seal ring holder -

Titanium alloy

General

Price and availability - refer to IAE

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Magnifying glass, 4xLOCALMagnifying glass, 4x

or greater

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-43-20-320-065 Machine the Rear Flange ID of the No. 4 Bearing Seal Ring Holder Before Nickel Plate

    1. Refer to Figure and Figure.

      2. Machine the ID of the seal ring holder.

      1. Refer to the SPM TASK 70-32-06-320-501.

        Machine the diameter to remove all of the damage and/or coating.

    2. SUBTASK 72-43-20-110-089 Clean the No. 4 Bearing Seal Ring Holder

      1. Clean the seal ring holder.

      1. Refer to the SPM TASK 70-11-03-300-503.

    3. SUBTASK 72-43-20-230-055 Fluorescent Penetrant Inspection of the No. 4 Bearing Seal Ring Holder

      1. Do a fluorescent penetrant inspection of the seal ring holder.

      1. Refer to the SPM TASK 70-23-02-230-501.

        No cracks are permitted.

    4. SUBTASK 72-43-20-220-099 Examine the No. 4 Bearing Seal Ring Holder

    1. Refer to Figure and Figure.

    2. Do a dimensional inspection of the part.

    5. SUBTASK 72-43-20-350-074 Restore the Rear Flange ID of the No. 4 Bearing Seal Ring Holder by Coating

    1. Refer to Figure and Figure.

      2. Prepare the part for coat.

      1. Refer to the SPM TASK 70-34-18-380-501.

        Mask areas not to be coated.

        Grit blast out of the area shown is not permitted unless otherwise specified.

      3. Coat the ID of the seal ring holder rear flange.

      1. Apply PWA 3606-4 coating to the repair area.

        or

        Apply PWA 271-13 coating to the repair area.

        Coat to a sufficient thickness to allow machining to finish dimensions.

        Coat out of area is not permitted unless otherwise specified.

        Use masks if necessary.

    6. SUBTASK 72-43-20-110-090 Clean the No. 4 Bearing Seal Ring Holder

      1. Clean the ring holder.

      1. After coating is applied and part is cooled, remove mask or maskants. Remove tape residue by the SPM TASK 70-11-26-300-503.

    7. SUBTASK 72-43-20-320-066 Machine the Rear Flange ID of the No. 4 Bearing Seal Ring Holder

    1. Refer to Figure and Figure.

      2. Machine the ID of the ring holder after coating.

      1. If the measured diameter in a free condition is not satisfactory, a held condition is permitted.

        NOTE

        The thickness of the coating after finish machine must be 0.003 to 0.020 in. (0.07 to 0.51 mm) all around.

        All dimensions apply when surface Y is flat by 0.002 in. (0.05 mm) and Diameters AA and U maintain a clearance envelope of 10.887 in. and 6.050 in. (276.53 mm and 153.67 mm) respectively in a free or held condition. Hold the seal ring holder only on surfaces Y and V and Diameters AA and U.

    8. SUBTASK 72-43-20-110-091 Clean the No. 4 Bearing Seal Ring Holder

      1. Clean the seal ring holder.

      1. Refer to the SPM TASK 70-11-03-300-503.

    9. SUBTASK 72-43-20-220-100 Examine the Repair

    1. Refer to Figure and Figure.

      2. Examine the seal ring holder after coating and finish maching.

      1. Refer to TASK 72-42-33-200-000 (INSPECTION-001).

        Use a 4X (or greater) magnifying glass to do a visual inspection of the coated area to examine for cracks and adhesion.

    10. SUBTASK 72-43-20-350-075 Identify the Repair

      1. Mark VRS3797 on the repaired No. 4 Bearing Seal Ring Holder adjacent to the part number.

      1. Make a permanent mark by the procedure given in the SPM TASK 70-09-00-400-501.

        Remove high material caused by marking the number.

    11. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment