1. Core drilling
Drill out the broken thread with a core drill.
2. BaerTurn fixed onto the installation tool
It is recommended to apply a little grease to the thread of the installation tool so that it can be unscrewed more easily later. Now screw the BaerFix thread insert, with the cutting holes facing downwards, onto the installation tool and lock it with the nut.
3. BaerFix screw in
BaerScrew the Fix thread insert into the hole until the installation tool is seated on the surface. The BaerFix thread insert cuts its own mounting thread. The installation tool has a hexagon socket and can therefore be operated with a nut and tool ratchet. Loosen the lock nuts again and unscrew the installation tool. The new spark plug thread is ready.
4. Seat of the thread insert
The BaerFix thread insert is placed slightly below the cylinder head surface by the installation tool during installation, thus ensuring that the spark plug sealing ring grips and seals optimally. Threads with BaerFix thread inserts withstand higher loads and guarantee optimum hold and fit.