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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Leaking gearbox on Grizzly 11x26 lathe G9972Z
I got back a week ago, only to find that my
Dad's 11x26 lathe was leaking oil from the gearbox. Finally got around to pulling the gearbox cover off (and the 1/4 inch of oil left promptly came out) and saw the problem is due to the 1/8th inch bead of hard sealant that the manufacturer used. It finally failed on the bottom edge... FWIW, you can leave both gear change knobs on the cover instead of punching out the roll pins. Keeps the detent balls and the springs in place... If your gearbox is leaking, and the four mounting bolts are tight, suspect that the factory sealant failed. What you need to fix it: Phillips head screwdriver to remove aluminum speed/feed chart Roll of absorbent paper towels (about 1/4 cup of oil left inside!) 5mm hex wrench Permatex (I chose Type 2 for a resilient gasket) Arrange paper towels under gearbox. Take out the four (5mm) cover bolts. Pull cover straight off. The cheap bead of sealant is on the reverse of the cover plate, which makes it easy to use a scraper to remove the old bead. Clean off mating surfaces, using a degreaser. Apply Permatex according to directions. Re-assemble. If you have changed the position of the knobs, one way to orient the swivelling gear change guides is so that the sliding gear is on the middle fixed gear. Set the gear change knobs so they are for the middle position. |
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