The Trick to Removing Push-On Nuts in Dishwashers

Advantage

• One major advantage of a push-on nut is that it doesn't require any portion of the shaft or bolt be modified for use. A cotter pin uses a hole in the bolt, while a C-clamp requires a crimp where it attaches to the bolt. A normal nut needs a matching screw thread on the bolt top. A push-on nut is placed merely by pushing it over the top of the bolt, as long as the diameters match.

Dimples

• Because there are no special requirements, a push-on nut goes onto a variety of shafts. Plastic can be used for the shaft or bolt as easily as metal. This makes a dishwasher lighter and less expensive. Less motion and work is required to attach the nut so it is easier to automate the process. One to two dimples on the sides of the nut press into the shaft and hold the nut into place. Alternatively, there may be a series of teeth at the bottom that hold it on.

Lifting the Brim

• It is almost impossible to remove a push-on nut without destroying it. If too much pressure is applied to a dishwasher plastic shaft, it may also break. When repairing equipment with push-on nuts, it is wise to have replacement parts just in case. Cutting the nut off is the easiest option. If the brim of the nut is against a flat surface then slide a small, thin-bladed screwdriver under the brim of the nut and lift up on it while holding the brim as steady as you can. Too much sideways pressure may break the shaft.

Cutting the Nut

• While the brim is up in the air, work the cutting edge of a small metal nipper under that spot. Clip the metal from the outer brim to the innermost area near the top portion. Slide the nipper inward toward the top part of the nut and continue to cut the metal, this time from the bottom of the hat toward the top. When you are finished, one side of the push-on nut will have a slice through it. This enables you to force the nut apart with a screwdriver twisted into that slice, which then releases the pressure of the dimples or teeth on the sides of the shaft. The other hand can simply pull the cap off the shaft.