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techtalk:ref:tools145 [2019/12/20 21:29] hippysmack |
techtalk:ref:tools145 [2019/12/20 21:32] hippysmack [Oil Pump Check Ball Seat Lapping Tool] |
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| ===== Oil Pump Check Ball Seat Lapping Tool ====== | ===== Oil Pump Check Ball Seat Lapping Tool ====== | ||
| - | **The tool on the left** is a homemade check ball lapping tool used to lap the seat where the check ball sits in the oil pump (57-76). \\ | + | **The tool on the left** is a homemade check ball lapping tool used to lap the seat where the check ball sits in the oil pump (57-76). ((Toolmaker of the XLFORUM http://xlforum.net/forums/showthread.php?t=499487&highlight=check+ball+lapping+tool)) \\ |
| It's made with a tool steel shank and a 3/8" carbide ball tip on the end. \\ | It's 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. \\ | 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. \\ | ||
| - | **The tool on the right** is a check-ball seat burnishing set. \\ | + | **The tool on the right** is a check-ball seat burnishing set. ((DaWind of the XLFORUM http://xlforum.net/forums/showthread.php?t=1013445&page=2)) \\ |
| The idea is to turn the ball into the seat several times, thereby smoothing it to a very fine finish. \\ | The idea is to turn the ball into the seat several times, thereby smoothing it to a very fine finish. \\ | ||
| It works quite well with these old check valve seats, but you can and do use quite a bit of force with the cast iron for a good result. \\ | It works quite well with these old check valve seats, but you can and do use quite a bit of force with the cast iron for a good result. \\ | ||
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| You'd probably need a lathe, a tap set and the ability to braze or silver solder to make your own tool. \\ | You'd probably need a lathe, a tap set and the ability to braze or silver solder to make your own tool. \\ | ||
| Although you might drill out and tap an un-needed pump nipple for part of the tool. \\ | Although you might drill out and tap an un-needed pump nipple for part of the tool. \\ | ||
| + | You can indicate the bolts in the chuck, face off the ends and then center drill them to provide a concentric pocket for the sphere to rest in. \\ | ||
| + | Then, hold the whole mess in tension between centers as you soldered. They surely have to be straight or they aren’t much use. \\ | ||
| |{{:techtalk:ref:tools:homemade_check_ball_lapping_tool_by_toolmaker.jpg?direct&300|}}|{{:techtalk:ref:tools:oil_pump_check_ball_lap_by_dawind.jpg?direct&300|}}| | |{{:techtalk:ref:tools:homemade_check_ball_lapping_tool_by_toolmaker.jpg?direct&300|}}|{{:techtalk:ref:tools:oil_pump_check_ball_lap_by_dawind.jpg?direct&300|}}| | ||
