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 72-41-34-300-046 HPC Inlet Variable Stator Vane Unison Rings - Blend Repair, Repair-046 (VRS6158)
General
This repair must only be done when the instruction to do so is given in 72-41-34, Inspection.
The HP compressor actuating ring/unison ring, VIGV upper and lower assemblies, repaired to this procedure must be as near as possible to its initial shape and surface condition.
The practices and processes referred to in the procedure by the TASK/SUBTASK number are in the SPM.
Price and Availability
Refer to International Aero Engines
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Chemical cleaning equipment | LOCAL | Chemical cleaning equipment | ||
| Penetrant Crack Test Equipment | LOCAL | Penetrant crack test equipment | ||
| Standard Workshop Equipment | LOCAL | Standard Workshop Equipment | ||
| Workshop inspection equipment | LOCAL | Workshop inspection equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 05-020 WATERPROOF SILICON CARBIDE | 1E1X8 | CoMat 05-020 | ||
| CoMat 05-021 WATERPROOF SILICON CARBIDE | 1E1X8 | CoMat 05-021 | ||
| CoMat 05-141 ABRASIVE STONE SILICON CARBIDE | LOCAL | CoMat 05-141 | ||
| CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY) | X222X | CoMat 06-063 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Figure.
Refer to the SPM TASK 70-35-03-300-501.
The maximum depth to remove the damage must not be more than 0.005 in. (0.13 mm).
The diameter of the repaired area must be 50 times the depth.
Use standard workshop equipment.
Make sure the damage marks are fully removed.
Remove area(s) of damage as necessary.
Refer to the SPM TASK 70-35-03-300-501.
Make sure the damage marks are completely removed and the area is made smooth to the adjacent material.
Use standard workshop equipment.
Blend area(s) of repair.
Refer to the SPM TASK 70-35-03-300-501.
Polish the repaired area(s) to remove scratches and to give a surface finish the same as the adjacent material.
Polish the area(s) of repair.
SUBTASK 72-41-34-350-082 Remove the Damage
CAUTION
TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.CAUTION
TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.CAUTION
TITANIUM COMPONENT - MAXIMUM SPEED FOR MECHANICAL TOOLS MUST NOT BE MORE THAN 1000 REVOLUTIONS PER MINUTE.CAUTION
TITANIUM COMPONENT - YOU MUST MAKE SURE THAT WHEN YOU REMOVE MATERIAL, BLEND AND POLISH, TO MAKE SMOOTH THAT NO SPARKS ARE PRODUCED.CAUTION
TITANIUM COMPONENT - IF THE MATERIAL SHOWS A CHANGE IN COLOR, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.Refer to: Figure.
SUBTASK 72-41-34-220-213 Examine the Repair
Refer to the SPM TASK 70-11-08-300-503, SUBTASK 70-11-08-300-002.
Swab etch the repair area(s).
SUBTASK 72-41-34-110-090 Do a Swab Etch
Figure: Repair Details and Dimensions
Repair Details and Dimensions
