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 72-42-31-300-007 No. 4 Bearing Support - Blend Repair, Repair-007 (VRS3078)
General
Price and availability - refer to IAE
The practices and processes referred to in the procedure by the TASK number are in the SPM.
Preliminary Requirements
Pre-Conditions
NONEConsumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Refer to: Figure
Blend local surface damage that is 0.030in. (0.762 mm) wide provided the areas with damage are a minimum of 1.000in. (25.4 mm) apart and the depth is not more than 15 percent of the material thickness. Refer to SPM TASK 70-35-21-350-501.
Blend damage at location 1, 4 and 5.
Blend raised material and burrs. Fifteen percent of threads can be blended. Refer to SPM TASK 70-35-21-350-501.
Blend damage at location 2.
Blend surface damage to a maximum of 15 percent of material thickness. Refer to SPM TASK 70-35-21-350-501.
Blend damage at locations 3 and 6.
SUBTASK 72-42-31-350-054 Blend the No. 4 Bearing Support Assembly
Refer to TASK 72-42-31-200-000.
Examine the blended areas.
SUBTASK 72-42-31-220-059 Examine the No. 4 Bearing Support Assembly After Blend Repair
Figure: No. 4 bearing support assembly blend repair locations
No. 4 bearing support assembly blend repair locations

