Extraction of damaged thread insert

Fig 1: Filing A Notch In Thread Insert, About A Quarter Turn In From End

Courtesy of VOLVO CARS OF NORTH AMERICA.

Alternative 1

File a notch in the thread insert, about a quarter turn in from the end. Do not file through the insert.

NOTE:

Do not damage the thread in the material.

Use a triangular scraper or similar to extract the insert by rotating it.

Alternative 2

Carefully expose the end of the thread insert. Use flat-nose pliers to pull the thread insert out.

Clean out the threads in the hole using the thread tap and blow clean.

Install a new thread insert.