Practice question

What is the purpose of a 'hammer cushion' (capblock) in the drive system?

To make the hammer heavier
To protect the hammer and pile by cushioning the metal-to-metal impact and helping transmit energy efficiently to the pile
To increase exhaust noise
To replace the pile cap entirely

Answer: B — To protect the hammer and pile by cushioning the metal-to-metal impact and helping transmit energy efficiently to the pile

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