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Use this guide to replace a damaged or lost shaft lock assembly in your Dremel 7300 MiniMite Cordless.
The shaft lock assembly is a locking mechanism that allows the Dremel bit to be replaced. The assembly holds the motor shaft in place when the shaft lock button is pressed, which stops the shaft from spinning and lets the bit be removed by hand. When the shaft lock assembly is damaged (commonly from the Dremel being dropped), the shaft lock button may no longer work properly.
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Pull back on the release tabs to disconnect the battery pack from the housing.
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Remove the two screws from the back of the device with the TR10 Torx Security screwdriver.
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Lift off the unscrewed plastic cover at an angle, away from the tip of the device.
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Lift the tip of the motor-shaft assembly gently, then pull the assembly out.
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There are two pieces that make up the shaft lock assembly:
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The key.
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The wire ring.
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Remove the wire ring from the device.
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Remove the key from its slot.
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Ensure that the shaft lock assembly fits together properly when reassembling the device.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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