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Oil Pump Tools

Oil Pump Check Ball Seat Lapping Tool

This is used to lap the seat where the check ball sits in the oil pump.

Homemade check ball lapping tool made with a tool steel shank and a
3/8“ carbide ball tip on the end. The pocket for the ball to sit was cut
with a 3/8” ball end mill then a few drops of Loctite 404 to keep it there. 1)


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