Hi. From searching on the Internet, it seems that the Shop Fox M1112 lathe is similar to the Grizzly G4003G model. I am helping some folks at a maker space get their shop fox lathe working. The G gear in the threading gear train is stuck. It is necessary to remove this gear in order to do metric threading. The F gear comes off with difficulty, but the G gear seems to hit a metallic obstruction. It is not tight, but seems to be hitting something when one tries to pull it off.
Internet forum searches seem to give two interesting results. One is use a big fat gear puller to force the gear off. I am afraid to do this, since I broke a lathe this way. Another thread suggests that the key may be sheared or cocked due to a jammed gearbox or a crash. Does anybody have some suggestions about how much effort is required to remove this gear. On my home lathe, the gear bores are tight, precise, well-lubed, and silky smooth. Not one hint of trouble.
People say this is why you should buy a lathe with a QCGB. But the M1112 has a QCGB and has a problem, while my all change gear lathe is just perfect. Is there a quality problem with gear/shaft fit?
Internet forum searches seem to give two interesting results. One is use a big fat gear puller to force the gear off. I am afraid to do this, since I broke a lathe this way. Another thread suggests that the key may be sheared or cocked due to a jammed gearbox or a crash. Does anybody have some suggestions about how much effort is required to remove this gear. On my home lathe, the gear bores are tight, precise, well-lubed, and silky smooth. Not one hint of trouble.
People say this is why you should buy a lathe with a QCGB. But the M1112 has a QCGB and has a problem, while my all change gear lathe is just perfect. Is there a quality problem with gear/shaft fit?