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 72-60-31-300-005 Deoiler Casing - Double Helical Insert Repair, Repair-005 (VRS5712)
General
Price and availability - none
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
Helicoil Twinsert Kit Number 3179-4 consists of quantity 25 outer coils, quantity 25 inner coils, the tap, and tang break-off tools appropriate for this repair.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Break-off tool (outer insert) | LOCAL | Break-off tool (4032-4) | ||
| Break-off tool (3695-4) | LOCAL | Break-off tool (3695-4) | ||
| Fluorescent Penetrant Inspection Equipment | LOCAL | Fluorescent penetrant inspection equipment | ||
| Helicoil Twinsert Kit Number 3179-4 | 5W060 | Helicoil Twinsert Kit Number 3179-4 | ||
| Inserting tool (outer insert) | LOCAL | Inserting tool (2705-4) | ||
| Inserting tool (7552-4) | LOCAL | Inserting tool (7552-4) | ||
| Magnifying Glass | LOCAL | Magnifying Glass | ||
| Standard Workshop Equipment | LOCAL | Standard Workshop Equipment | ||
| Tap tool, double insert | LOCAL | Tap tool, double insert (3893-4) | ||
| Vibration peen equipment | LOCAL | Vibration peen equipment | ||
| Workshop Inspection Equipment | 0AM53 | Workshop Inspection Equipment |
Consumables, Materials and Expendables
NONESpares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Insert - Double Helical Coil | LOCAL | 2391-4CN375 | AR | Double Helical Coil Insert |
| Insert - Double Helical Coil | LOCAL | 4691-4CN339 | AR | Double Helical Coil Insert |
Safety Requirements
NONEProcedure
Refer to Figure.
Refer to SPM TASK 70-35-27-300-501, paragraph 1.C.
Tap the hole using Tap tool, double insert.
Drill hole to a minor diameter of 0.3041 in. - 0.3110 in. (7.724 mm - 7.899 mm).
SUBTASK 72-60-31-320-054 Machine the Hole to accept the Double Helical Insert
Refer to SPM TASK 70-38-02-300-503, SUBTASK 70-38-02-350-002.
Apply surface protection to bare metal.
SUBTASK 72-60-31-380-001 Restore the Damaged Surface Protection
Refer to Figure.
Refer to SPM TASK 70-35-27-300-501, paragraph 1.C.
Install the 2391-4CN375 0.25 in. - 0.50 in. (6.35 mm - 12.70 mm) pitch below the inside surface of the Deoiler Casing. Use the Inserting tool (outer insert).
Break off the installation tang at the notch using Break-off tool (outer insert).
Install the 4691-4CN339 . Align the end of the last coil flush with the end of the outer insert. Use the Inserting tool (7552-4).
Break off the installation tang at the notch using Break-off tool (3695-4).
Install the double helical threaded insert(s).
Collect and remove all broken tangs.
SUBTASK 72-60-31-350-061 Install Double Helical Coil Threaded Insert
Use Vibration peen equipment..
Refer to SPM TASK 70-09-00-400-501.
Vibro-engrave VRS5712 adjacent to the part number.
SUBTASK 72-60-31-350-062 Identify the Repair
Figure: Helical Coil Insert Hole Locations
Helical Coil Insert Hole Locations
