Excessive pressure in the 2nd operation does not produce a good seam and may stretch the metal causing an increase in the seam width and “unhooking” or reduction of the overlap. This seam is more likely to leak then one made with normal pressure.
| Probable Cause | Suggested Remedy |
|---|---|
| 1st Operation Seaming Roll worn beyond the limit. | Replace 1st Operation Seaming Roll. |
| Loose 1st Operation Seaming Roll. | Adjust 1st Operation Seaming Roll setting according to Instructions or Check with can cover manufacture for proper seam dimensions |
| 2nd Operation too tight | Check with can or cover manufacture for proper seam dimensions |
| Worn 2nd Operation Seaming Roll. | Replace 2nd Operation Seaming Roll. See Instructions section of Parts List or Service Manual. |