TASK 72-58-01-300-005 No. 5 Bearing Thermal Shield - Weld Repair The Cracks And Holes, Repair-005 (VRS3329)

DMC:V2500-A0-72-58-0102-00A-627A-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 72-58-01-300-005 No. 5 Bearing Thermal Shield - Weld Repair The Cracks And Holes, Repair-005 (VRS3329)

Effectivity

FIG/ITEM PART NO.

20-100

2A1353-01

20-100

2A2099-01

Material of component

RR

DESCRIPTION SYMBOL MATERIAL

No. 5 Bearing Heatshield

-

Stainless Steel Alloy

General

Price and avialability - 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
Silicon carbide wheelLOCALSilicon carbide wheel

or equivalent

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-58-01-110-056 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, SPM TASK 70-11-15-300-503, SPM TASK 70-11-16-300-503 or SPM TASK 70-11-33-300-503.

    2. SUBTASK 72-58-01-310-051 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 quality of cracks.

        Cracks in the welds must be fully routed out.

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

    2. Clean the weld area with a silicon carbide wheel or equivalent.

      3. Weld the cracks by the manual gas tungsten arc method.

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

    3. SUBTASK 72-58-01-310-052 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.

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

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

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

      1. Use a silicon carbide wheel or equivalent.

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

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

      4. Weld the patch in position.

      1. Refer to TASK 70-31-13-310-503 and Figure.

    4. SUBTASK 72-58-01-220-061 Examine the Repair

      1. Inspect the heatshield after repair.

      1. Refer to TASK 72-58-01-200-000 (INSPECTION/CHECK-000).

    5. Figure: Weld repair the No. 5 bearing heatshield

    Weld repair the No. 5 bearing heatshield

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Silicon carbide wheel
Tool Name:Silicon carbide wheel