The Kurt D675 is a heavy duty vise used for machining.
Often, a vise gets stuck or difficult to open or close, making it useless for machining operations. Some vises are expensive, especially the Kurt D675. Take them apart to make simple repairs and clean moving parts, which will help you do your job more efficiently. The Kurt D675 has three moving parts that are connected. Separate these parts for cleaning. Often, chips and debris are the cause of the vise sticking, so cleaning and stoning flat surfaces makes a huge difference in its operation.
Instructions
1. Take the Kurt D675 apart to make any necessary repairs. Over time the mechanism that moves the jaw gets stuck as debris gets in the way and causes problems with the main draw screw. Most of the parts can be salvaged, repaired or replaced on a KURT vise. Loosen the two bolts with a large Allen wrench on the bottom of the vise to get started.
2. Lay the Kurt vise flat and loosen the small screw, which holds the sliding mechanism in place, on the lock ring of the main screw. Use the vise handle to unscrew the main screw. The large movable jaw and the screw mechanism will come loose and will then be able to be turned over for inspection. Remove the jaw from the sliding mechanism and unscrew the main screw from the slide itself.
3. Clean the movable jaw, the main screw and sliding mechanism to remove any debris. Often the chips that build up in these areas are responsible for the vise locking up and often just cleaning the parts can repair the KURT D675. Tighten the screw back into the slide mechanism and set the movable jaw on the sliding mechanism after all the parts have been cleaned.
4. Blow out the body of the vise. Now that all of the movable parts have been removed, use compressed air to blow out the body of the vise. Stone the top of the vise so that the movable jaw slides back and forth in a fluid motion. The stuck movable jaw can also be caused by high spots or divots along the two slides.
5. Reassemble the vise by first replacing the fixed jaw with the two bolts on the underside. Place the reassembled sliding, movable jaw mechanism and screw that back into place. Re-tighten the small screw on top of the lock ring and use the vise handle to move the movable vise from fully open to fully closed to check that everything is working properly.
