31 00... Notes on repairing threads

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 335is, 2013 BMW 335i, 2012 BMW 335is, 2012 BMW 335i, and 2011 BMW 335is. 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 Helicoil Thread

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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 Locating 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: Installing Helicoil Thread Insert
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Break drive pin and remove.

Fig 5: Identifying Drive Pin
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