FM-18: KNOWN-STRAIGHT BIT SHOWS VISIBLE WOBBLE OR RUNOUT

FM-18 KNOWN-STRAIGHT BIT SHOWS VISIBLE WOBBLE OR RUNOUT

• Two known-straight impact-rated 1/4-in. hex bits

• A known-straight, fully retained 1/4-in. hex bit traces a visible circle at no load.

  A known-straight, fully retained 1/4-in. hex bit traces a 1. Remove the pack; inspect and clean a known-straight bit and its shank.

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

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