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Service the parts in the barrel of the Makita Jack Hammer HM1203C 2010.
Wherever there’s grease, make sure to clean it off and replace it with new grease. The recommended grease is Makita 181490-7.
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Unscrew the knob securing the side handle.
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Remove the bolt securing the side handle.
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Remove the side handle.
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Use a small pry bar or flathead screwdriver to pry the rubber front cap off of the hammer.
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Use a pair of snap ring pliers to expand the snap ring on the front of the hammer.
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Remove the snap ring.
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Remove the washer on the front of the hammer.
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Lift the front cover off of the front of the hammer.
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Lift the rubber ring off of the front of the hammer.
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Compress the spring and hold it down while you pull the two retainers out of their slots and remove them.
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Remove the spring guide.
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Remove the spring.
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Remove the front barrel cover.
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Remove the 4 mm hex bolt securing the barrel cover.
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Lift the barrel cover straight up and remove it.
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Use a pair of snap ring pliers to expand the snap ring securing the bolt holder.
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Remove the snap ring.
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Lift the washer off of the bolt holder and remove it.
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Remove four 6 mm hex bolts securing the barrel.
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Lift the barrel straight up and remove it.
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Use an angled pick to pull the washer and rubber ring 39 out of the barrel.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
