Hello,
I've recently acquired a PW Model C lathe 14x54. Serial number is 656 and thanks to John Oder that puts it around late 1941. I'm guessing prewar since the badges are bronze.
When I first moved the carriage, it seemed fine, but now does not move at all when I turn the hand wheel. If I help the movement with a block of wood prying on a bed web, it will move while turning the hand wheel. At first, I was assuming that a key had sheared, but I don't see any key referenced in the parts PDF. I also do not feel any interruption while rotating the wheel indicating a key or other drive structure being partially present.
I was going to just table this until the winter when I will have some time to tear into it, but my friend at work who operates a model C (16x54) said his machine will sometimes stop the carriage during a heavy feed. I went to see it and locked the carriage lock and sure enough, the carriage hand wheel just rotates with some friction without moving the carriage.
I hope the pictures attached show what I'm trying to describe. The carriage hand wheel drives a gear that also meshes with the friction feed clutch. When I turn the hand wheel, it turns with some friction but does not turn the gear meshing with the rack on the bed. If I engage the longitudinal feed, I cannot turn the hand wheel at all because I can't backfeed the worm. So how does this gear lock onto the shaft holding the bed rack gear? Is it a pressed fit that over time has relaxed causing this issue? Thanks for any help.
Mark
I've recently acquired a PW Model C lathe 14x54. Serial number is 656 and thanks to John Oder that puts it around late 1941. I'm guessing prewar since the badges are bronze.
When I first moved the carriage, it seemed fine, but now does not move at all when I turn the hand wheel. If I help the movement with a block of wood prying on a bed web, it will move while turning the hand wheel. At first, I was assuming that a key had sheared, but I don't see any key referenced in the parts PDF. I also do not feel any interruption while rotating the wheel indicating a key or other drive structure being partially present.
I was going to just table this until the winter when I will have some time to tear into it, but my friend at work who operates a model C (16x54) said his machine will sometimes stop the carriage during a heavy feed. I went to see it and locked the carriage lock and sure enough, the carriage hand wheel just rotates with some friction without moving the carriage.
I hope the pictures attached show what I'm trying to describe. The carriage hand wheel drives a gear that also meshes with the friction feed clutch. When I turn the hand wheel, it turns with some friction but does not turn the gear meshing with the rack on the bed. If I engage the longitudinal feed, I cannot turn the hand wheel at all because I can't backfeed the worm. So how does this gear lock onto the shaft holding the bed rack gear? Is it a pressed fit that over time has relaxed causing this issue? Thanks for any help.
Mark
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