Dead Head is a condition where the first and/or second operation seam is not completely formed around the circumference of the can.

POTENTIAL CAUSES:

• Seaming chuck worn or undersized.

• Pin gage height is too great for the can height.

• Insufficient lower lifter spring pressure.

• Seaming chuck radius does not match cover radius (chuck fit).

• Too tight first or second operation seaming rolls.

• Seaming roll bearing binding.

• Lower Lifter bearings not turning freely.

SUGGESTED REMEDY:

• Replace seaming chuck.

• Reset pin height for can being run.

• Refer to your can manufacturer’s Top Double Seam Guide.

• Replace seaming chuck with one having proper radius.

• Adjust seaming rolls.

• Replace bearing.

• Replace bearing or correct clearance.