Introduction
The driver includes the piston, piston ring, and an O-Ring. In order to replace the driver assembly, you will need a 3-Gauge Allen wrench.
Tools
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Remove the piston from the cylinder.
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Piston along with piston ring and O-ring should be replaced together, though the rings take priority over the piston.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
