TASK 73-13-41-300-010 Fuel Nozzle And Support Assembly - Weld Repair The Cracks On The Inner Heat Shield, Repair-010 (VRS3673)

DMC:V2500-A0-73-13-4100-04A-920A-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 73-13-41-300-010 Fuel Nozzle And Support Assembly - Weld Repair The Cracks On The Inner Heat Shield, Repair-010 (VRS3673)

Effectivity

FIG/ITEM

PART NO.

01-020

2A0994

01-020

2A1637

01-020

2A2250

01-020

2A3448

01-020

2A3453

Material of component

DESCRIPTION

SYMBOL

MATERIAL

Fuel nozzle and support assembly

Corrosion and heat resistant alloy

General

Price and Availability - Refer to IAE.

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

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Stainless steel wire brushLOCALStainless steel wire brush - no specific
Welding equipmentLOCALWelding equipment - no specific

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-209 WELDING FILLER WIRE, NiBASE 5% CrLOCALCoMat 03-209
Silicone carbide abrasives - no specificLOCALSilicone carbide abrasives

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 73-13-41-350-062 Remove the Cracks from the Inner Heatshield of the Fuel Nozzle and Support Assembly

    1. Refer to Figure.

    2. CAUTION

      BE CAREFUL WHEN YOU ROUT OUT CRACKS SO YOU DO NOT CAUSE NICKS, GOUGES OR OTHER TOOL MARKS ON THE BASE METAL OF THE SUPPORT THAT IS ADJACENT TO OR BEHIND THE HEATSHIELD.

      Rout out cracks in the inner heatshield.

      NOTE

      If the crack goes into the braze attachment joint or is more than 0.080 in. (2.03 mm) or is the No Weld Zone, you must repair the inner heatshield.

    2. SUBTASK 73-13-41-110-060 Clean the Repair Area of the Fuel Nozzle and Support Assembly

      1. Clean the area to be welded to remove surface oxides from the inner heatshield.

      1. Use Stainless steel wire brush or Silicone carbide abrasives - no specific to mechanically clean around the crack repair area.

    3. SUBTASK 73-13-41-110-061 Clean the Fuel Nozzle and Support Assembly

      1. Clean the fuel nozzle and support assembly.

      1. Refer to SPM TASK 70-11-01-300-503.

    4. SUBTASK 73-13-41-310-056 Weld the Cracks in the Leading Edge of the Inner Heatshield in the Fuel Nozzle and Support Assembly

    1. Refer to Figure.

      NOTE

      If the crack goes into the braze attachment joint or is more than 0.080 in. (2.03 mm) or is in the No Weld Zone, you must not repair the inner heatshield and the support is not serviceable.

    2. Heat the nozzle and the support assembly to 300 deg F (148.9 deg C) for a minimum of 20 minutes.

    3. Provide an argon gas backup (flow argon gas behind the heatshield during the weld repair).

      4. Weld the cracks in the inner heat shield.

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

      2. Use Manual gas tungsten arc weld (IAE 16A) method to weld the cracks in the heatshield.

      3. Use CoMat 03-209 WELDING FILLER WIRE, NiBASE 5% Cr welding filler wire that is 0.031 in. (0.79 mm) in diameter.

      4. The maximum height of the weld must be 0.020 in. (0.51 mm). Do not remove material from the weld.

    5. Let the weld area become cool slowly after repair.

      NOTE

      Stress-relief is not necessary.

    6. Manually blend the weld beads flush to adjacent parent material.

    5. SUBTASK 73-13-41-230-061 Examine the Fuel Nozzle and Support Assembly after Weld Repair

    1. Refer to Figure.

      2. Fluorescent penetrant inspect the weld repairs.

      1. Refer to SPM TASK 70-23-05-230-501.

      2. No cracks are permitted.

      3. Fluorescent penetrant inspection is necessary on the complete area.

      3. Visually inspect the inner heat shield attachment braze joint.

      1. Refer to SPM TASK 70-21-00-220-501.

      2. Make sure there is full line of sight braze coverage at the inner heatshield attachment braze joint.

      3. Less than 100 percent coverage is not acceptable.

    6. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-209
Type:sp01
Supply Short Name:CoMat 03-209 WELDING FILLER WIRE, Ni BASE5% Cr
Supply Name:CoMat 03-209 WELDING FILLER WIRE, NiBASE 5% Cr
Specification Groups:
Doc NumberType
MSRR9500/213HASTELLOY W AMS 5786 MIL-R-5031 CLASS 12
OMAT:333HASTELLOY W AMS 5786 MIL-R-5031 CLASS 12
Suppliers:
ManufacturerRemarks
LOCAL
K6835
80357
Manufacturer Code:LOCAL
Supply Number:Silicone carbide abrasives
Type:sp01
Supply Short Name:
Supply Name:Silicone carbide abrasives - no specific
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Tool Number:Stainless steel wire brush - no specific
Tool Name:Stainless steel wire brush
Manufacturer Code:LOCAL
Tool Number:Welding equipment - no specific
Tool Name:Welding equipment