31 00... Notes on repairing threads

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 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: Identifying Damaged Helicoil Thread

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Procedure

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

Fig 2: Creating Clean 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: Inserting Helicoil Thread Into Locating Thread
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Break drive pin and remove

Fig 5: Breaking Drive Pin
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