The drill makes abnormal grinding or knocking, vibrates strongly, or the chuck and spindle have play.

The drill makes abnormal grinding or knocking, vibrates 1. Center-lock, remove the pack and bit, and hand-turn the empty chuck.

• FM-13: Fm 1 1 6

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

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