44b33013_ble_Seam_Troubleshooting_Guide__Suggested_Remedy
[Probable Cause] Can flange damaged in can handling system [Suggested Remedy] 
Determine if the can is damaged before or after entering the seamer. If the can is damaged before the seamer, check can handling equipment to insure that cans are entering the Filler properly. Check for Mushroom Can Flange. If the flange damage is occurring in the seamer, check timing between the cap Feed Turret & Seaming Turret pockets. On 41L, 61H, 62H, 80L, 81L, 100L, 101L, 120L, 121L, 140S & 180 Seamers; Check position of the Can Feed & Discharge Rail. If the Rail is positioned too far in the back of the pocket at makeup, the can will rise pushing the can flange into the Can Flange Guide mounted on the Cap Guide Section Outer. See your Service Manual for procedures. Check Cap Guide Rails to insure that the can rises through without interference.
Knocked Down Flange | Cause & Remedy | Double Seam Troubleshooting Guide
Suggested Remedy