4KSB5SSOB KitchenAid Blender - Instructions

Pried the old coupling off and unscrewed the metal piece remaining then screwed the new coupling on.

Went to several online blog sites. Repair of the Kitchenaid blender is a hot topic. Could not repair it the way the instructions indicated. One person used a hammer and that did the trick! Who would have thought to use a hammer?!

I used a straight edge screwdriver. At first my husband and I were afraid to much too much force behind the old coupling, but I figured it's no good the way it was so used more force and "pop" it came off. Then installed the new one and I love my blender!!

Being an aircraft mechanic for years I pride my self on being able to fix anything that my wife buys. So I tried to replace the drive gear for her kitchen aid blender without reading the instructions, much easier to read.
Thanks,

I first tried to do the repair just like the directions ,trying to force off the wheel. Then I tried doing it the way the readers here did with a tthin pliers and was not sucessfull. I then took it to a hardware store and ask about a certain pliers,they did not have it. The older man at the register took two screwdrivers from the jar next to him took my blender and pried on either side and popped off the wheel just like the original directions said. It was then easy to put the new one on.

Following the instructions which was quite clear.

Simply to find the look of dismay in her face. After I violently began shaking and dismantling the compactor in disgust. I decided to unplug it from the wall, I then gathered my senses and began to perform a electrical diagnosis and found that the rotary swich contacts, which activates the compactor, had gone bad. I simply went to the website and selected my part # from the detailed spec sheet. I chose to receive the package on a three day shipment. Here it arrived, installed the part and away the problem went. While on the parts list I included bag brackets that had broke over time and now my compactor is like new.

Last time this happened we simply used a thin wrench to unscrew the damaged coupling. This time it was so tight no wrench could undo it. We had to grind it off using a grinder drill until it was so loose it popped off.

I followed the instructions on the sheet that came with the replacement part. The instructions are accurate, however, the working is misleading. I think additional information is needed to make the install easier. First, a flat head screwdriver works best. Also, all the rubber that is on the broken coupling needs to be removed before trying to get the coupling off. Once all the rubber has been removed then it becomes easier to see the metal rod that holds the coupling and distance between the coupling and the base of the blender, take the screwdriver and gently pry the coupling off in an upward movement while going around in a circular manner. Then you can see the coupling rising up from the rod. Then take a hold of the broken coupling and pull it off. Then attach the new coupling, screwing it on counterclockwise. Once you realize what is going on, it's actually quite easy.

Simply followed the online video instructions. Screwdriver to remove the worn out part. Rag to clean threads. Hand tighten replacement part (reverse threads). Blender fully functional. Couldn't have been easier.

place screwdriver under old coupler and pried up on it in different spots until it popped off. Took less than 5 min. to do.

Part is left hand thread. Use screwdriver to lock motor fins and twist off part.

Because the old coupling was so tightly screwed onto the shaft it was necessary to use very flat wire crimpers to slide between the old coupling and the blender housing to grip the shaft and immobilize it while pliers were used to grasp the old coupling and loosen it---rotate clockwise.

Used a wrench 19/64 flat

I used a pair of diagonal cutters to nip away at the drive coupling which had become gummy and soft. This exposed the inner aluminum hub that the drive coupling was molded to. I used several pieces of masking tape to protect the blender finish under the drive coupling. The instruction supplied suggest to pry upward with a screw driver at 1/4 turn intervals until it comes off the motor shaft. I thought this was a rough approach, as I was concerned about damaging the threaded motor shaft. Also note that the motor shaft has left handed threads, you would turn clockwise to loosen the drive coupling. The first approach I tried was to use a small ignition wrench, there are two flats directly below the coupling aluminum hub which measured 9/32" across the flats. The wrench even though small would have to been ground thinner to fit, this may have worked. I decided to use approach two. I used my dremel tool with a 1/32" cut off wheel and cut through each side of the aluminum hub staying away from the center where the motor shaft is threaded. Across the center of the hub I only cut through half the thickness, I then used the diagonal cutters to fold each half agains itself (the hub actually fell off). I installed the new coupling turning it counter clockwise on the motor shaft. I attached the blender jar filled with water with the jar lid on and toggled the blender on and off a few times to further tighten the drive coupling.