FM-23: THE BIT SLIPS OR PULLS OUT OF THE CHUCK

FM-23

• Bit was not inserted straight or enough jaw length was not engaged
• Chuck was not tightened firmly by hand
• Bit shank is oily, undersized, worn, or damaged
• Chuck jaws or internal scroll are worn despite normal movement

1. A sound bit remains centered and retained through a moderate test, or chuck wear is proven.

1. Tighten the single-sleeve chuck firmly by hand using the spindle lock, then pull-test the bit before power.
2. Make one moderate controlled work test; if a sound correctly tightened bit still slips, route the chuck for service or supported replacement.
3. Release the trigger, remove the battery, and remove or catch the loose bit before it can fall.
4. Clean the bit shank and chuck jaws dry, reject a bent or damaged bit, and insert a sound bit straight with all three jaws centered.

This is a preview of the troubleshooting guidance included in the full repair manual.

• Drill bit

• The chuck jaws open and close normally, but a straight compatible bit rotates or pulls out during moderate drilling or driving.

  The chuck jaws open and close normally, but a straight 1. Release the trigger, remove the battery, and remove or catch the loose bit before

• 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.