failure mode
FM-17: FM-17 THE BIT SLIPS OR PULLS OUT UNDER LOAD
FM-17 THE BIT SLIPS OR PULLS OUT UNDER LOAD
Diagnostic overview
FM-17 THE BIT SLIPS OR PULLS OUT UNDER LOAD
Likely Root Causes
- Bit did not pass a firm tug test
- Shank groove or hex corners are worn
- Wrong-shank or non-impact accessory is fitted
- Detent, ball, spring, or collar is worn
Quick Checks
- The bit remains locked through a controlled drive and then releases normally.
Repair Preview
1.
This is a preview of the troubleshooting guidance included in the full repair manual.
Related symptoms
The bit passed initial insertion, but backs out, falls free, or loses drive while the chuck body stays secure.
The bit passed initial insertion, but backs out, falls free, 1. Release the trigger, remove the pack, and inspect the bit shank and retention
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.