Titan Airless Sprayer IMPACT 410 Piston Replacement

Turn off and unplug the sprayer.

Use a Phillips driver to remove the four 15 mm-long screws securing the front cover.

Remove the front cover.

Plug in the power cord.

Pulse the on/off switch until the pump stops at the bottom of its stroke.

Turn the sprayer off and unplug its power cord before continuing.

Pinch the return hose clamp and slide it downward to expose the connector.

Use your fingers to remove the retaining clip from the foot valve housing.

Use a 7/16" wrench to unscrew the return hose.

Remove the return hose.

Use an adjustable wrench to loosen and remove the foot valve housing.

Lay the sprayer down horizontally on its black metal bars before continuing.

Use an adjustable wrench to loosen the inlet valve housing from the pump block.

Remove the inlet valve housing.

Teflon O-ring

Inlet valve seat

Inlet valve ball

Inlet valve washer

Nylon washer

Piston bushing

Use a 5/16 inch hex key to loosen and remove the outlet valve retainer.

Use a pick tool to remove the outlet valve seat.

Remove the outlet valve ball.

Remove the O-ring.

Remove the outlet valve cage.

Use a 3/8 inch hex key to loosen and remove the two screws securing the pump block.

Pull the pump block away from the sprayer to separate it from the pump housing.

Pull the pump block upward to slide the piston rod out of its slot in the pump housing.

Remove the pump housing.

Use your palm to push the piston through the pump block.

Remove the piston.