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 72-45-21-300-014 HPT Case - Replace The Helicoil Inserts In The BSI Bosses, Repair-014 (VRS1987)
Effectivity
FIG/ITEM PART NO. | |
|---|---|
01-010 | 2A0250 |
01-010 | 2A0250SL87VA156 |
01-010 | 2A1591 |
01-010 | 2A1591SL87VA156 |
01-010 | 2A1600 |
01-010 | 2A1600SL114902 |
General
Price and availability - None
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
For the method to clean the parts, refer to CLEANING-000 TASK 72-45-21-100-000.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Installation tool | LOCAL | 7552-4 | Emhart Teknologies Products | |
| Tang removal tool | LOCAL | 3695-4 | Emhart Teknologies Products | |
| Removal tool | LOCAL | 1227-6 | Emhart Teknologies Products | |
| 10X magnifying glass | LOCAL | 10X magnifying glass |
Consumables, Materials and Expendables
NONESpares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Helicoil insert | LOCAL | 1191-4TN250 | AR | FIG/ITEM 01-090 |
Safety Requirements
NONEProcedure
Refer to Figure.
Use Removal tool.
Remove the damaged or loose inserts
SUBTASK 72-45-21-350-087 Remove the Damaged or Loose Inserts
Refer to Figure.
Use Installation tool.
Put the 1191-4TN250 into the tip of the insertion tool.
Put the insert into the threaded hole.
Turn the handle clockwise so the top of the insert is three-quarters to one and a half pitch below the face of the boss.
Use Tang removal tool.
Break the tang of the insert at the notch.
SUBTASK 72-45-21-350-088 Install the New Helicoil Inserts
Torque the bolt to between 65 and 85 lbfin (7.3 and 9.6 Nm).
Refer to SPM TASK 70-35-08-300-501.
Torque check the installed helicoil insert.
The insert must not protrude out of insert hole.
The insert must not move.
Examine the helicoil insert position.
SUBTASK 72-45-21-220-088 Do A Torque Check
Refer to Figure.
Use a 10X magnifying glass.
No damage is permitted.
No cracks are permitted.
Visually examine the repaired area.
SUBTASK 72-45-21-220-089 Examine the Repaired Area
Use vibro-engraving equipment.
Refer to SPM TASK 70-09-00-400-501, (SUBTASK 70-09-00-400-001).
Vibro engrave VRS1987 near to the part number.
SUBTASK 72-45-21-350-089 Vibro Engrave VRS1987
Figure: Repair Details and Dimensions
Repair Details and Dimensions
