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 72-32-57-300-001 No. 1 Bearing Compartment Air Tube - Blend Surface Damage, Repair-001 (VRS1310)
General
Price and availability - none
This Repair scheme gives the procedure for blending the tube.
The practices and processes referred to in the procedure by the TASK number are in the SPM.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 05-106 ABRASIVE STONE | K6835 | CoMat 05-106 | ||
| CoMat 05-020 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-020 | ||
| CoMat 05-021 WATERPROOF SILICON CARBIDE | 44197 | CoMat 05-021 |
Spares
NONESafety Requirements
NONEProcedure
The maximum depth to remove the damage must not be more the 0.005 in. (0.13 mm).
Remove the damage
Make sure the area is made smooth into the adjacent material. The diameter of the repaired area to be 50 times the depth.
Remove all the sharp edges and sudden changes of the slop.
Make the damaged area smooth
Use CoMat 05-020 WATERPROOF SILICON CARBIDE. Polish the repaired area and the area made smooth. Make sure all the scratches are removed and the surface finish is the same as the adjacent material.
Polish the area
SUBTASK 72-32-57-350-051 Remove the Damage
CAUTION
TITANIUM COMPONENTYOU MUST USE SILICON CARBIDE TYPE STONES AND ABRASIVE PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.IF THE MATERIAL SHOWS A CHANGE IN COLOR TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.Refer to Inspection-000 TASK 72-32-57-200-100.
Do a visual inspection
SUBTASK 72-32-57-220-053 Do a Visual Inspection
Refer to SPM TASK 70-23-01-230-501.
No cracks are permitted.
Do a penetrant crack test on the repaired area
SUBTASK 72-32-57-230-053 Do a Crack Test