TASK 72-58-01-300-006 No. 5 Bearing Shield - Weld Repair Cracks And Holes, Repair-006 (VRS3326)

DMC:V2500-A0-72-58-0103-00A-627A-C|Issue No:003.00|Issue Date:2015-05-01

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 72-58-01-300-006 No. 5 Bearing Shield - Weld Repair Cracks And Holes, Repair-006 (VRS3326)

Effectivity

FIG/ITEM

PART NO.

20-080

2A1355

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

No. 5 Bearing Heatshield

-

Stainless Steel Alloy

General

Price and availability - refer to IAE

Make sure that the cleaning and inspection procedures are done before this repair.

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
Silicon carbide abrasive wheelLOCALSilicon carbide abrasive wheel
Rotary austenitic stainless steel brushLOCALRotary austenitic stainless steel brush

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-58-01-110-057 Clean the No. 5 Bearing Heatshield

      1. Clean the heatshield.

      1. Refer to the SPM TASK 70-11-01-300-503, SPM TASK 70-11-13-300-503, TASK 70-11-15-300-503, SPM TASK 70-11-16-300-503 or SPM TASK 70-11-33-300-503.

    2. SUBTASK 72-58-01-310-053 Weld Repair Cracks in the No. 5 Bearing Heatshield

      1. Rout out cracks in the welds.

        1. Refer to Figure. There is no maximum length or quantity of cracks.

        1. Cracks in the welds must be fully routed out.

        2. Cracks in the sheet metal do not have to be routed out.

    3. Clean weld area. Refer to SPM TASK 70-11-26-300-503.

      4. Weld the cracks by the manual gas tungsten method.

      1. Refer to the SPM TASK 70-31-13-310-501.

    3. SUBTASK 72-58-01-310-054 Weld Patches on Holes in the No. 5 Bearing Heatshield

      1. Remove rough edges or distorted areas around the holes by machine.

      1. The area that you machine to remove damage can be any shape.

      2. The area must be in a 2.000 in. (50.8 mm) diameter circle.

      3. The inner and outer corner radii must be 0.250 in. (6.350 mm) or larger.

      2. Mechanically remove oxides that are in 0.300 in. (7.620 mm) of the hole that you machined.

    3. Clean the weld area. Refer to SPM TASK 70-11-26-300-503.

      4. Make a patch to fit 0.000 to 0.005 in. (0.000 to 0.127 mm) loose in the hole you machined.

      1. Make the patches from discarded parts of the same part number or use AMS 5510 sheet stock of the same thickness as the part.

      5. Weld the patch in position.

      1. Refer to the SPM TASK 70-31-13-310-501 and Figure.

    4. SUBTASK 72-58-01-220-063 Examine the Repaired Areas

      1. Do a fluorescent penetrant inspection (high sensitivity) of the repaired areas. No cracks allowed.

    5. SUBTASK 72-58-01-220-062 Examine the Repair

      1. Inspect the heatshield after repair.

      1. Refer to Inspection-000 TASK 72-58-01-200-000.

    6. Figure: Weld repair the No. 5 bearing heat shield

    Weld repair the No. 5 bearing heat shield

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised format. (editorial change)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Rotary austenitic stainless steel brush
Tool Name:Rotary austenitic stainless steel brush
Manufacturer Code:LOCAL
Tool Number:Silicon carbide abrasive wheel
Tool Name:Silicon carbide abrasive wheel