failure mode
FM-12: FM-12 ACCESSORY CAMS OUT, BINDS, OR TWISTS THE TOOL
No-load operation is normal, but the bit, socket, or fastener binds, slips, or causes the tool to twist unexpectedly.
Diagnostic overview
No-load operation is normal, but the bit, socket, or fastener binds, slips, or causes the tool to twist unexpectedly.
Likely Root Causes
- Bit or socket size is wrong or worn
- Fastener is cross-threaded, stripped, or damaged
- Tool is not held straight on the fastener
- Work is loose or the joint is misaligned
- Impact duration or pressure is excessive
- Correct impact accessory; clamp; pilot and hand tools.
Quick Checks
- Fastener moves without cam-out, bind, or uncontrolled reaction.
Repair Preview
1.
This is a preview of the troubleshooting guidance included in the full repair manual.
Related symptoms
No-load is normal, but the bit, socket, or fastener binds, slips, or twists the tool.
No-load is normal, but the bit, socket, or fastener 1. Release trigger, stabilize work, wait for stop, and remove battery.
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.