FM-08: FM-08 THE KEYLESS CHUCK JAWS WILL NOT OPEN, CLOSE, RELEASE, OR GRIP

FM-08 THE KEYLESS CHUCK JAWS WILL NOT OPEN, CLOSE, RELEASE, OR GRIP

• Chuck is turned in the wrong direction or only one sleeve is held
• Dust, chips, or a damaged bit obstructs jaw travel
• Bit is off-center, too small, or not inserted fully
• Jaw threads or one jaw are worn or damaged
• Chuck or spindle is bent or internally seized

1. All jaws move evenly, hold a straight bit, and release it by hand.

• The chuck jaws bind, will not release a bit, close unevenly, or cannot grip a straight round shank.

  The chuck jaws bind, will not release a bit, close 1. Center-lock, remove the pack, and hold the rear chuck sleeve.

• root cause analysis
• tools needed
• step-by-step repair procedure
• diagrams
• exploded views
• post-repair checks

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