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 79-22-41-300-027 Oil Scavenge Pump - Related Parts - Replace The Damaged or Loose Helicoil Inserts In The Casing Assembly, Repair-027 (VRS5364)
General
Price and availability - none
The practices and processes referred to in the procedure by the TASK numbers are in the SPPM.
Tools for removal and installation may be purchased from Heli-Coil Product Division/Mite Corporation, Danbury, Connecticut 06108.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Extracting tool 1227-6 | LOCAL | Extracting tool 1227-6 | ||
| Inserting tool 7552-4 | LOCAL | Inserting tool 7552-4 | ||
| Break-off tool 3695-4 | LOCAL | Break-off tool 3695-4 |
Consumables, Materials and Expendables
NONESpares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Insert, Helicoil | 0AM53 | MS21209F4-15L |
Safety Requirements
NONEProcedure
Refer to Figure.
Drive the 1227-6 extracting tool into the insert at approximately a quarter of a coil from the end of the insert.
Drive the extracting tool into the insert
Hit the head of the tool lightly to dig the blade into the top of the coil of the insert.
Use a hammer.
Arrange the Extracting tool 1227-6 into the insert.
Bearing down hard on the handle of the tool. Turn the tool slowly counterclockwise.
Maintain a hard pressure on the handle when the insert backs out.
Complete the removal of the insert
SUBTASK 79-22-41-350-067 Remove the Damaged Helicoil Insert
Do the touch up process if the anodic treatment has been damaged by helicoil insert removal.
Refer to SPM TASK 70-38-02-300-503.
Check the surface
SUBTASK 79-22-41-330-063 Repair the Damaged Anodic Treatment
Refer to Figure.
Put the new helicoil insert on the tip of the Inserting tool 7552-4.
Put the insert on the tool
Put the tool with the new helicoil insert into the threaded hole.
Put the tool with the insert in position
Install the new helicoil insert into the hole.
Turn the handle clockwise.
Install the helicoil 1 to 1.5 pitch below the surface.
Install the insert into the hole
Break the insert tang off at the notch.
Use a tang Break-off tool 3695-4.
Remove the broken tangs from the blind holes with a magnetized rod.
Break the tangs
SUBTASK 79-22-41-350-068 Install the Helicoil Insert
Do a touch-up process if the anodic treatment has been damaged by the helicoil insert installation.
Refer to SPM TASK 70-38-02-300-503.
Check the surface
SUBTASK 79-22-41-330-064 Restore the Damaged Anodic Treatment
Refer to SPM TASK 70-23-01-230-501.
Do a crack test on the repaired area
SUBTASK 79-11-41-230-073 Do a Crack Test on the Repaired Area
Refer to SPM TASK 70-35-08-300-501, SUBTASK 70-35-08-220-001.
Do an inspection of the new helicoil inserts
SUBTASK 79-22-41-220-214 Do an Inspection of the Helicoil Inserts
Figure: Replace The Damaged Or Loose Helicoil Inserts
Replace The Damaged Or Loose Helicoil Inserts
