| Probable Cause | Suggested Remedy |
|---|---|
| Loose 1st Operation Seaming Roll setting. | Make adjustments. See Parts List Instructions or Service Manual for procedures |
| Deep countersink, or excess metal used in countersink limits the amount of metal available for cover hook | See the section on ‘Deep Countersinks’ in the next section |
| Loose 2nd Operation Seaming Roll Setting | Make adjustments. See Parts List Instructions or Service Manual for procedures |
| Worn 1st Operation Seaming Roll groove profile | Replace 1st Operation Seaming Roll |
| 1st Operation Seaming Roll groove too wide | Replace 1st Operation Seaming Roll with a Roll having a more narrow groove profile |
| Insufficient seaming stock caused by too small a cut edge diameter in making of cover | Discuss with Cover Manufacturer |
| Excessive Lower Chuck Spring pressure | Reduce spring pressure in Lower Chuck Assemblies. See the section on Long Body Hooks. |
| Worn 1st Operation Seaming Roll Bearings or Roll Pin | Replace worn tapered roller bearing or Seaming Roll Pin. Make adjustments. See Parts List Instructions or Service Manual procedures |
| Worn Seamer Lever Shaft upper and/or Lower Turret Bushings. | Check Service Manual for allowable tolerances and replace Bushings if beyond these limits |