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Use this guide to replace the piston in your Titan Impact 410 Airless Sprayer.
Note: To access the piston, you must first remove the outlet valve. It's highly recommended that you service this valve with the parts included in the repacking kit (#704-586) before reassembling.
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Turn off and unplug the sprayer.
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Use a Phillips driver to remove the four 15 mm-long screws securing the front cover.
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Remove the front cover.
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Plug in the power cord.
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Pulse the on/off switch until the pump stops at the bottom of its stroke.
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Turn the sprayer off and unplug its power cord before continuing.
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Pinch the return hose clamp and slide it downward to expose the connector.
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Use your fingers to remove the retaining clip from the foot valve housing.
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Use a 7/16" wrench to unscrew the return hose.
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Use an adjustable wrench to loosen and remove the foot valve housing.
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Lay the sprayer down horizontally on its black metal bars before continuing.
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Use an adjustable wrench to loosen the inlet valve housing from the pump block.
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Remove the inlet valve housing.
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Teflon O-ring
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Inlet valve seat
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Inlet valve ball
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Inlet valve washer
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Nylon washer
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Piston bushing
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Use a 5/16 inch hex key to loosen and remove the outlet valve retainer.
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Use a pick tool to remove the outlet valve seat.
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Remove the outlet valve ball.
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Remove the O-ring.
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Remove the outlet valve cage.
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Use a 3/8 inch hex key to loosen and remove the two screws securing the pump block.
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Pull the pump block away from the sprayer to separate it from the pump housing.
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Pull the pump block upward to slide the piston rod out of its slot in the pump housing.
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Remove the pump housing.
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Use your palm to push the piston through the pump block.
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Remove the piston.
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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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