The chuck still rotates, but a new mechanical grind, knock, scrape, tight spot, or severe vibration remains with the bit removed and is not ordinary motor or brake sound.

The chuck still rotates, but a new mechanical grind, knock, 1. Stop at the first new mechanical noise or severe vibration, remove the battery, and

• FM-27: Fm 5 1 2

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

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