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The jackhammer is started by pushing on the handle. The inside of a jackhammer includes: a circuit of tubes, a heavy piledriver, and a drill bit at the bottom. Once the jackhammer has started air enters the jackhammer from a compressor which then passes it on to a valve on one side of the jackhammer. The pressurized air flows throughout the circuit inside of the jackhammer. A valve inside the jackhammer then closes changing the direction of the air. forcing the piledriver to rise and the drill bit to follow. In a short time the valve opens again pounding the piledriver into the drill bit and into the ground.

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