Only one Phillips head screw holds the rear housing cover to the mixer.ħ.

The rear housing cover of the mixer helps to hold the two halves of the mixer together. Take note of the screw when you disassemble, because it must be returned to a rear position in the mixer. This lock washer screw is a fail-safe in case the other screws shake loose. There are four more motor housing screws in the back of the mixer that must be removed with a flat head screwdriver.Īttention! One of the rear two motor housing screws will have a lock washer on it. Remove the four motor housing screws in the back. Remove the five front motor housing screws with a flat he ad screwdriver.ĥ. The first set of motor housing screws to remove are located in the ring underneath the planetary. To lift the motor off the mixer, all fasteners connecting the bottom and top halves of the mixer must first be removed. The motor is located in the top half of the two major sections of the mixer. Now that the planetary is off the machine, the next order of business is to remove the motor from the mixer. Remove the five motor housing screws in the front. Position the two screwdrivers in the indentations on the sides of the planetary and carefully pry the planetary off.Ĥ. The best way to remove the planetary is by using a couple of flat head screwdrivers as pry bars. With the roll pin and drip ring removed, the planetary is ready to be freed from the mixer, however, it is still held snugly in position by the tight fit of its internal gears. Using an appropriately-sized pin punch and a hammer, lightly tap the the roll pin out of place. Trying to pry the planetary from the mixer won't do any good with the roll pin still in place, so it must be removed. The drip ring is only held on with a little bit of tension, so a light tap should make it fall right off the mixer.Ī roll pin holds the planetary to a shaft coming from the gearbox. It has to come off in order to pry the planetary off of the mixer.Ĭarefully place a flat head screwdriver against the upper lip of the planetary drip ring, then lightly strike the screwdriver with a hammer. The planetary drip ring decorates the mixer and contributes to the seal around the planetary. There are a few tricks that make parts of the repair easier, so make sure to read each step. Other than that, disassembly and reassembly of the mixer is easily handled with a couple of screwdrivers, a pin punch, pliers, and a hammer. In fact, the biggest challenge might be managing the greasy situation waiting in the gearbox, so make sure that you have some shop towels handy. This difference in hardness ensures that the worm gear breaks before the metal gears tear each other to pieces.īecause KitchenAid mixers are made to last many years (even decades) you should expect to replace the worm gear in this style of mixer sometime during its service life.Ĭhances are that you'll find this household repair to be pleasantly manageable, even if it's your first. In this mixer style, the worm gear is made of a hard nylon material that is less hard than the other metal gears in the gearbox. They can either wear slowly over time so that metal gears do not wear, or they can completely fail when the mixer is overloaded, as a safety mechanism. KitchenAid mixer worm gears are made to absorb stress and friction during operation. Several gears inside the gearbox work together to spin the planetary.įor this style of KitchenAid mixer, one of the gears is specifically designed to fail before the others-a gear called the worm gear. The mixer's gearbox is positioned just above the planetary in the front end of the motor housing. This is the part of the mixer on the underside of the motor housing where KitchenAid accessories attach. Just to clarify, the KitchenAid mixer part that spins is called a planetary.

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