31 00... Notes On Repairing Threads

WARNING: This page is about a different car, the 2013 BMW M3, 2012 BMW M3, and 2011 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Install Helicoil thread inserts so that they are flush with the original thread.

NOTE: Damaged threads in engine support may be repaired with Helicoil thread inserts. Comply with the procedure described in the example.

Fig 1: Helicoil Thread Inserts

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Procedure:

Create a clean core hole; if necessary, drill out screw remnants.

Fig 2: Drilling Core Hole
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Create locating thread for Helicoil thread insert.

Fig 3: Creating Thread For Helicoil Thread Insert
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Pick out Helicoil thread insert in accordance with the TABLE and screw into the locating thread until flush with the original thread.

Fig 4: Screwing Helicoil Thread Insert Into Locating Thread
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Break drive pin and remove.

Fig 5: Removing Drive Pin
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