Weld Nut Repair - Missing Weld Nut
WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Installing a J-nut in place of a weld nut is not a recommended repair.
NOTE:
C-pillar repair shown, others similar.
- Depower the system. For additional information, refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Remove the component from where the weld nut is to be repaired. Refer to the appropriate removal and installation procedure in this article.
- Drill 3 equally spaced 5/64-in (1.75-mm) holes in close proximity to where the weld nut face will be plug welded back to the sheet metal.
- Obtain the appropriate 6-mm (0.24-in) or 8-mm (0.32-in) weld nut.
- Obtain the appropriate 6-mm (0.24-in) by 1.0 or 8-mm (0.32-in) by 1.25 grounding screw (self-tapping).
- Set up for the positioning of the weld nut.
- Route a sufficient length of wire through the weld nut clearance hole and back out an adjacent access hole.
- Position a weld nut, shoulder end up, onto the wire.
- Position a flat washer onto the wire and secure it so it cannot be pulled off.
- Plug weld the weld nut into position.
- Pull the welding wire back through the clearance hole, allowing the weld nut and flat washer to follow the welding wire through and stop against the sheet metal.
- Make sure the weld nut shoulder is aligned through the clearance hole in the sheet metal.
- With the weld nut firmly held in position, plug weld the weld nut at the 3 holes drilled previously.
- Metal finish as required.
- Verify the nut is securely in place.
- Install the component with the previously obtained screw.
- Tighten the attaching screws to specification. For additional information, refer to SPECIFICATIONS in this article.