31 00... Notes on repairing threads

WARNING: This page is about a different variant/trim than selected.

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 Inserts

Courtesy of BMW OF NORTH AMERICA, INC.

Procedure

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

Fig 2: Cleaning Core Hole
Courtesy of BMW OF NORTH AMERICA, INC.
Create locating thread for Helicoil thread insert

Fig 3: Inserting Helicoil Thread
Courtesy of BMW OF NORTH AMERICA, INC.
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
Courtesy of BMW OF NORTH AMERICA, INC.
Break drive pin and remove

Fig 5: Removing Break Drive Pin
Courtesy of BMW OF NORTH AMERICA, INC.