Thread Inserts
General Purpose Thread Repair Kits.
These kits are available commercially.
Repair Procedure
|
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. |
|
