Following is a list of topics from the table of contents: Includes sections on assembly, installation, operation and repair parts. Sears Craftsman Owners Manual for Model Number 101.28980 and Model 101.28990 Metal LatheTwenty Four page PDF copy of the original manual for the 101.28980 and 101.28990 12-inch metal turning lathe made by Atlas Lathe works for Sears and sold under the Craftsman name.
There is no way that the half nuts will engage and drive the carriage in direct drive but not in back gear.Operating Instructions and Parts List for Craftsman Six-Inch Turning Lathe Model Number 101.21400 Eight page PDF copy of the original manual for the 101.21400 Sears Atlas Lathe with description, operation and controls, adjustments, cutting speeds, reading the gear chard, mounting the work cutting tool bits, indexing, threading, lubrication, and several pages of detailed parts diagrams with parts lists! I've had these lathes apart numerous times and have owned a 618 for 4 or 5 years. If no, sounds like your spindle pulley is seized to the spindle and you need to dissassemble the head stock. If no, check that the screw in the middle of the pulley isn't screwed all the way into the spindle (it's an oil screw)Ħ. If no, is the bull gear pin (hard to see, it's in the large gear next to the spindle pulley) engaged?ģ. with back gear engaged, does the spindle turn by hand?Ģ. All the back gear does is to reduce spindle speed and increase torque, by driving the spindle via the back gear and bull gear.īefore you do anything to the leadscrew, check this out first:ġ.
The lead screw is driven off the end of the spindle via a forward/ reverse idler. With all due respect, whether or not the back gear is engage or not has no effect on leadscrew rotation.
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