31 00... Notes on repairing threads: Procedure

2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransSECTION Procedure
WARNING: This page is about a different car, the 2012 BMW 328i, 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.
  1. Create a clean core hole; if necessary, drill out screw remnants
    Fig 1: Drilling Clean Core Hole
    G04726239Courtesy of BMW OF NORTH AMERICA, INC.
  2. Create locating thread for Helicoil thread insert
    Fig 2: Drilling Thread For Helicoil Thread Insert
    G04726240Courtesy of BMW OF NORTH AMERICA, INC.
  3. Pick out Helicoil thread insert in accordance with the *ADD EXTREF* S299563365720110219000 and screw into the locating thread until flush with the original thread
    Fig 3: Inserting Helicoil Thread Into Locating Thread
    G04726241Courtesy of BMW OF NORTH AMERICA, INC.
  4. Break drive pin and remove
    Fig 4: Breaking Drive Pin
    G04726242Courtesy of BMW OF NORTH AMERICA, INC.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.