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 72-50-23-300-042 LPT Stage 3 Outer Shroud Seal Segment - Weld Repair Cracks, Repair-042 (VRS4416)
Material of component
PART IDENT | IAE SYMBOL | MATERIAL |
|---|---|---|
Stage 3 Shroud Seal Segment | MTS1096A or 2.4665.1/ Hastelloy X |
General
Price and availability - none
The practices and processes referred to in this procedure by the TASK number are in the SPM.
Before repair remove the honeycomb, refer to Repair VRS4279 TASK 72-50-23-300-037 (REPAIR-037).
After repair replace the honeycomb, refer to Repair VRS4279 TASK 72-50-23-300-037 (REPAIR-037).
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 03-197 WELDING FILLER WIRE | LOCAL | CoMat 03-197 |
Spares
NONESafety Requirements
NONEProcedure
Use hand held grinder.
Keep material removal to a minimum to remove cracks.
Remove all braze material from area A5.
Refer to the SPM TASK 70-31-13-310-501 and Figure.
If crack goes through, V-groove to half depth and weld up. After this, V-groove from other surface until weld seam as necessary. Weld other side as usual.
Completely V-groove the full length of the crack.
SUBTASK 72-50-23-320-060 Prepare the Surfaces before Welding
Refer to the SPM TASK 70-31-13-310-501.
Clean the areas around the cracks.
SUBTASK 72-50-23-110-115 Clean the Stage 3 Shroud Seal Segments
Refer to Figure.
Welded areas must be equal to the original contours and must be flush with adjacent surfaces.
Use an hand held grinder.
Dress the welds.
SUBTASK 72-50-23-320-061 Dress the Welded Areas
CAUTION
DO NOT OVERHEAT THE AREAS WHICH ARE DRESSED.Refer to Figure.
Examine dimensionally.
SUBTASK 72-50-23-220-140 Examine the Machined Areas
Refer to the SPM TASK 70-11-03-300-503.
Aqueous cleaning.
SUBTASK 72-50-23-110-135 Clean the Stage 3 Shroud Seal Segments
Figure: Repair Details and Dimensions
Repair Details and Dimensions
Figure: Repair Details and Dimensions
Sheet 1
Figure: Repair Details and Dimensions
Sheet 2
