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 72-50-41-300-002 LPT Shaft - Blend Repair On The Splines, Repair-002 (VRS1493)
General
Price and availability - none
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Magnetic particle inspection equipment | LOCAL | Magnetic particle inspection equipment | ||
| Fluorescent Penetrant Inspection Equipment | LOCAL | Fluorescent penetrant inspection equipment | ||
| Vibro-engraving equipment | LOCAL | Vibro-engraving equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 05-019 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-019 | ||
| CoMat 05-020 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-020 | ||
| CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY) | LOCAL | CoMat 06-022 |
Spares
NONESafety Requirements
NONEProcedure
Refer to: Figure
Use honing stone.
The surface finish of the repair must be same as the adjacent area.
Refer to the SPM TASK 70-35-03-300-501.
Make smooth and/or hand polish to remove the galls from the spline.
Refer to the SPM TASK 70-35-03-300-501.
Use abrasive stone.
Remove the minimum amount of material to smooth out the defect.
The depth of the blend must not be more than 0.006 in. (0.15 mm).
The number of blend must be within 10 places.
The surface finish of the repair must be same as the adjacent area.
Blend in circumferential direction.
Make smooth and/or hand polish to remove the scratches and scores at location 2 and 4.
Refer to the SPM TASK 70-35-03-300-501.
Use abrasive stone.
Remove the minimum amount of material to smooth out the defect.
The depth of the blend must not be more than 0.035 in. (0.90 mm).
The minimum distance between blends must be 2 in. (50.8 mm).
The surface finish of the repair must be same as the adjacent area.
Blend in circumferential direction.
Make smooth and/or hand polish to remove the scratches and scores at location 3 and 5.
SUBTASK 72-50-41-350-052 Remove the Damage from the LP Turbine Shaft
Visually examine the repaired area for galls using 10X magnifying glass.
Refer to TASK 72-50-41-200-000 (INSPECTION/CHECK-000).
Visually examine the repaired area.
SUBTASK 72-50-41-220-069 Examine the LP Turbine Shaft
Refer to TASK 72-50-41-200-000 (INSPECTION/CHECK-000).
Make sure there are no cracks in the repaired area.
Magnetic particle examine the repaired area.
SUBTASK 72-50-41-240-053 Examine the Turbine Shaft for Cracks
NOTE
This is an alternative to Step.Fluorescent penetrant examine the repaired area.
SUBTASK 72-50-41-230-063 Examine the Turbine Shaft for Cracks
NOTE
This is an alternative to Step.
Figure: LP turbine shaft - Repair limit
LP turbine shaft - Repair limit
