4KSB5SSOB KitchenAid Blender - Instructions

Just took a screwdriver and pried off the broken coupling as the instruction said with the part. Don't stress it really works and is easy. Ordered the part on Monday and recieved it on Tuesday. Great service from Partselect!

A very flat wrench or needle nose pliers was needed. I could not get the nut unscrewed with what I had so I had to mail the unit to a service center for repair. They were able to use the part I had purchased but if I had known I wouldn't be able to do it I could have saved a little money in the shipping I had to pay when I ordered the part.

Thanks to the good advise of those who did this before me ,I know I need a very slender wrench to get between the screwed on base of the coupling and the copy of the base of the blender.
I tried to file one myself, but the metal was too weak. Because i had the size (from what I filed), I measured and knew i needed a 7 MM wrench. I bought one at the parts store and ground it thin enough to slip into the small space and from there it was a five minute job.

Remove blender jar to get to drive cog. Use a 1/4 to 3/8 flat open-end wrench to hold cog shaft then turn the cog with your hand CLOCKWISE to loosen. Screw new cog gear on COUNTERCLOCKWISE hand tight. Reassemble your blender and you're good to go. It takes a very thin flat wrench but even if you have to buy a set the're not very expensive. Good luck.

When the part came it had complete repair instructions with it. I followed the instructions and it was very easy. I had to pry the old coupleing off the threaded shaft. You wouldn't think that would work but the coupleing was made of soft metal so when you pry it off the hard metal shaft it didn't mess up the threads. Then you just screw the new part on counterclockwise and the first time you use the blender it tightens itself. Very easy!!

Removed base bolts. Removed base. Replaced coupling. Replaced base

I used a screwdriver as the printed instructions said. After prying it off (took a bit of prying) with a screwdriver, I discovered the thing screws backwards. It would have been easier for me to use needle-nosed plyers to hold the shaft and turn the coupler by hand. Oh well. Works fine anyway.

By placing a screwdriver under the bottom of the coupling and lifting up. vary easy to replace. save over a $200.00 applaince. Thanks

The most challenging portion of the repair was the removal of the old coupling. I ended up using a punch and a hammer. Tapped clockwise several times. It took about 20 times. Once the old coupling is removed the installation of the new was super-easy. Just screwed it counter clock wise by hand and was ready to go.

Followed instructions that came w/ packaging. Used large screwdriver and needle-nose pliers to slowly pry old coupling off. ** Would be nice if a small flat disposible wrench the size of the shaft diameter was included. Would make things so much better and quicker!!

I removed the old coupling, with some difficulty I imagine due to the age of the blender, I then simply screwed the new part counterwise as instructed and it is working perfectly now!

It took a while to pry the old coupling off, but after a little cussing under the breath and stick-to-it-ness the blender works fine. I was ready to throw the blender out but decided to go on the internet and look for the part I needed and was happy to see I would not have to buy a new blender. I was very surprised to see how fast I received the part and want to thank you.,

Repair parts instructions said to pry around in four places with screw driver between motors base and underside of drive gear and it should pop right off. Well it didn't and I had to go around many times being care full not to damage finish of appliance. Finally it came off leaving thread remains on the tapered threaded motor shaft. Using a scriber, I dug out and removed all thread remains and then easily screwed on the new replacement completing the job. The blender, a good one, now works fine again.

Removed the old worn-out coupling and replaced with the new one as described in the instructions included with the new part.

Directions included with replacement part were no help...maybe I'm stupid, but prying up on a threaded metal part didn't help unthread it at all.
Vise grips solved the problem. I used vise grips to remove the rubber from the coupler while it was still attached to the blender base, exposing the metal base to the coupler. (yes, I used vise grips to destroy the damaged coupler. after all the hell I went through to try to do it as the directions said, it was very satisfying.)
After removing the rubber, I used the vise grips to bend and distort the metal base until I could get a pair of needle-nose pliers around the drive shaft and hold it still while I unscrewed the now bent-up metal base. Victory!
I thoroughly recommend this method to anyone else, as using vise grips to destroy something is very gratifying.