TASK 72-50-53-300-036 No. 5 Bearing Scavenge Tube Heat Shields - Weld Repair, 036 (VRS3332)

DMC:V2500-A0-72-50-5312-01A-627A-C|Issue No:003.00|Issue Date:2020-08-01

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 72-50-53-300-036 No. 5 Bearing Scavenge Tube Heat Shields - Weld Repair, 036 (VRS3332)

Effectivity

FIG/ITEM

PART NO.

01-672

4T8044

01-682

4T8045

20-402

2A2206-01

02-420

2A2234-01

Material of component

DESCRIPTION

SYMBOL

MATERIAL

No.5 bearing scavenge tube

-

AMS 5510 stainless steel

heat shield

General

Price and availability - refer to IAE

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

Part number with more REACh (Registration, Evaluation, Authorization, and Restriction of Chemicals) information are listed below:

2A2234-01

Refer to How To Use (Engine Manual) Substances of Very High Concern and Safe Use Information.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Drilling machineLOCALDrilling machine
Capacitor - discharge resistance welderLOCALCapacitor - discharge resistance welder

(Model 1-016-03 Weldmatic Unitek Corp. Pasadena, CA) or equivalent

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-320-154 Stop Drill the Damage Surfaces

      1. Drill holes at the ends of the cracks.

      1. Use a drill with a diameter of 0.059 in. (1.50 mm).

    2. SUBTASK 72-50-53-310-058 Weld Patches on the Damaged Surfaces (Dents and Cracks)

    1. Refer to Figure and Figure.

    2. Machine to remove rough edges or distortion around damage.

      3. Mechanically remove oxides that are in 0.250 in. (6.35 mm) of a machined hole.

      1. Use a silicone carbide abrasive wheel or equivalent.

      4. Make a patch that is 0.125 in. (3.18 mm) larger than the area to be patched.

      1. You can make the patch from parts of the same part number that were discarded. You can also make patches from AMS 5510 sheet stock of the same thickness as the part.

      5. Examine the patch for cracks under a white light at 3X magnification.

      1. Reject the patch if there are cracks.

      6. Tack weld fully around the patch, approximately 0.031 in. (0.79 mm) from the edge, with a space of 0.031 in. (0.079 mm) between tacks.

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

    3. SUBTASK 72-50-53-220-172 Examine the No. 5 Bearing Scavenge Tube Heat Shield after Weld Repair

      1. Inspect the heat shield after weld repair.

      1. Refer to TASK 72-50-53-200-000 (INSPECTION-000).

    4. Figure: Weld Repair the No. 5 Bearing Scavenge Tube Heat Shield

    Weld Repair the No. 5 Bearing Scavenge Tube Heat Shield

    Figure: Weld Repair the No. 5 Bearing Scavenge Tube Heat Shield

    Weld Repair the No. 5 Bearing Scavenge Tube Heat Shield

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added text and applicable part number in common information for REACh. (19VC374)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Capacitor - discharge resistance welder
Tool Name:Capacitor - discharge resistance welder
Manufacturer Code:LOCAL
Tool Number:Drilling machine
Tool Name:Drilling machine