41 00... Opening Weld Joints
WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
- Opening weld spots (resistance pressure spot welding):
- Set punch mark in center of weld spot. Set 8 mm dia. weld spot drill bit on punch mark and drill through top metal sheet.NOTE: Because the weld spots may have surface-hardened, grind them if necessary with an angle grinder and paper grinding disk.
- Set punch mark in center of weld spot. Set 8 mm dia. weld spot drill bit on punch mark and drill through top metal sheet.
- Opening laser weld seams:
- Place angle grinder with grinding disk on laser weld seam and grind through top metal sheet. Be careful not to cut through and damage sheet metal underneath.