| ALCOA FASTENING SYSTEMS HuckMAX Blind Rivet Fastening System (Troubleshooting Guidelines) | ||
| PROBLEM | POSSIBLE CAUSE | REMEDY |
| Spindle breaks high. | Oversize hole | Check hole diameter and drilling technique. Remove and replace with oversize rivet. |
| Rivet grip too long | Remove and replace with proper grip rivet. | |
| Installation tool | Defective or wrong tool/nose piece. | |
| Defective rivet | Inspect rivets and test function in a test hole. | |
| Spindle breaks low. | Undersize hole | Check hole diameter and drilling technique. Remove rivet, ream hole to size and install a new rivet. When working with wet sealant, allow for a little extra hole clearance to provide space for the sealant. |
| Rivet grip too short | Remove and replace with proper grip rivet. | |
| Misaligned holes | Review hole prepartation and assembly technique. | |
| Tool cocked | Align installation tool with axis of rivet. | |
| Installation tool | Defective or wrong tool/nose piece. | |
| Defective rivet | Inspect rivets and test function in a test hole. | |
| Gripping jaws slipping. | Build-up of debris in jaws | Disassemble and clean jaws; replace jaws if worn. |
| Head not seated. | Hole cocked | Hole should be normal to surface within 2° |
| Tool cocked | Align installation tool with axis of rivet. | |
| Eccentric countersink | Ensure good fit between hole and countersink pilot tool. | |
| Bulb off-sheet. | Rivet grip is too long | Remove and replace with proper grip rivet. |
