0A-13 General Information:
Thread Inserts
General purpose thread repair kits. These kits are
available commercially.
Repair Procedure
WARNING
!
Refer to Safety Glasses Caution.
NOTE
Refer to the thread repair kit manufacturer's
instructions regarding the size of the drill and
tap to use.
Avoid any buildup of chips. Back out the tap
every few turns and remove the chips.
1. Determine the size, the pitch, and the depth of the
damaged thread. If necessary, adjust the stop collars
on the cutting tool and tap to the required depth.
2. Drill out the damaged threads. Clean out any chips.
3. Lubricate the tap with light engine oil. Tap the hole.
Clean the threads.
4. Thread the thread insert onto the mandrel of the
installer. Engage the tang of the insert onto the end
of the mandrel.
NOTE
The insert should be flush to one turn below
the surface.
5. Lubricate the insert with light engine oil, except when
installing in aluminum and install the insert.
6. If the tang of the insert does not break off when
backing out the installer, break the tang off with a
drift.