4KB25G1XTG5 KitchenAid Mixer - Instructions

Removed top cover, remove snap-ring on shaft, slide top gear and worm gear off. Clean all the grease out and clean parts. Installed new worm gear and parts. Repacked with new grease, careful not to much, leaving room for expansion.

First of all, go to the web site and download the schematics of the model #. It will show all the parts and part #s. Secondly watch a u tube video of the actual strip down process of the professional 600 series stand mixer. With this knowledge, do one of two processes 1: strip down the machine, remove the gears and check for defects- order parts. Or 2: replace all the parts( little money) and have a totally refurbished , smooth running mixer. I kept the good used gears for spares. I replaced 90 % of the internals ( including motor) and have a smooth running machine. I initially burned out the mother 2 months after initial purchase, sent it back under warentee, and received it back . Wen I stripped it down 10 years later, there was very little grease in the gear housing. This is what probable ruined the gears. Use plenty of grease in the housing and gears. The grease is one of the most expensive items, but you can't find it anywhere, so order it, along with everything else, from Parts Select.

removed the cover as stated in the e-mail and followed their recommendations on how to do the repair, the hardest part was removing the retainer clip, job went smoothly. thanks

removed the cover, separated the gear casing, cleaned the gears, replaced the thrust bearing kit and worm gear, greased all and reassembled. Wish I would have known to order the grease, it would have saved a couple bucks in shipping.

You must have new bevel gear and can of food grade grease, ordered together. 1. Remove screw from back of mixer, holding the trim band; remove band. 2. Remove four screws holding the top cover. 3. Remover cover 4. Remove two screws holding the pc board and motor speed control; lift board out of the way. 5. Remove four screws holding gear cover; remove cover. 6. Remove as much gear grease as is accessible; discard. 7. Remove snap ring from vertical shaft holding bevel gear. 8. Remove horizontal shaft/gear by lifting straight up. 9. Remove bevel gear by sliding up shaft. 10. Remove cross pin holding lower gear. 11. Remove lower gear by sliding up shaft. 12. Remove vertical shaft and rotating head by tapping on top of shaft. 13. Clean all grease from gear case and on all gears (ground metal from bevel gear will be in this grease). 14. Clean all grease from inside gear cover. 15. Making certain gear case is now clean of all old grease, use putty knife to place grease in bottom of gear case. 16. Rub light coat of grease on vertical shaft and slide shaft back up into bottom housing. 17. Slide lower bearing back down vertical shaft. 18. Reinstall cross pin holding lower gear. 19. Place grease on lower gear. 20. Slide bevel gear down vertical shaft, making certain recess in underside of bevel gear lines up and sits completely over top of lower gear; when the bevel gear is fuly seated the snap ring groove will just be showing on the vertical shaft. 21. Reinstall snap ring. 22. Lightly grease shaft of both ends og horizontal shaft/gear; make certain ball bearing on front of shaft is also greased. 23. Slide ball bearing, spacer and bronze bushing on front of horizontal shaft. 24. Silde bronze bushing on opposite end of horizontal shaft (flange on bronze bushing is placed facing the gear). 25. Place assembled horizontal shaft/gear into lower gear housing. 26. Liberally grease all gears, 27. Replace gear cover, replace screws. 28. Replace pc board and motor speed control. 29. Plug mixer in and run on lowest speed for at least 10 minutes;increase speed until satisfied gears ar running smoothly. 30. Replace top cover and trim band. Bake something

removed top casing, removed old switch and sensor,and replaced with new ones. It was just a matter of a half dozen screws and unpluging 4 or 5 wires and then reversing the process. Couldn't be easier. thank you

The transmission housing was cracked and one of the bearings was broken. I replaced both of them, but the mixer really didn't sound any better. So I replaced the gears in the transmission, and while that was better it still wasn't correct. I am going to replace the other bearing and the planetary shaft and see it that aligns everything a bit better. I believe the problem is the way the gear on the end of the motor shaft is working with the worm gear, the bearings are not keeping the correct spacing. Hopefully, the new one in the rear will fix the problem.

The appliances belong to my neighbor who had no papers/manuals so I was on my own to figure out how to even get the machine apart and to find the correct nomenclature for the parts I needed. The PartSelect diagrams on the web site told me everything I needed to know. The key to the dis-assembly was the band around the center of the machine. After I discovered that, the band came off easily followed by splitting of the casing. One the first machine it appeared that the circuit board/switch assembly was in bad shape looking like it had been over heated at one time. As a test, I took the electric component out of the machine that would run and put it on the dead mixer. Beauty, it worked. OK so much for the easy one. On the machine that would only turn part way, I split the transmission housing by removing four small bolts and found that the worm gear was partially stripped. So, I ordered a new gear, switch assembly and transmission gasket since the old one was torn during my dis-assembly process. I don't have any snap ring pliers, so the snap ring(retaining ring) was taken off using a large screw driver and a a pair of slip joint pliers. Worked well, but I was afraid that the old retaining ring may have been damaged, so I ordered a new one. Good idea, since I broke the old one trying to put it back on. When all of the parts were installed, I filled the voids with heavy grease and put it all back together. Both mixers now work perfectly which saved the owners several hundred dollars. They had planned on replacing them both for use at their restaurant. I am now a fan of PartSelect because of the ease at which I, a novice had been able to find and get the correct parts, and the speed at which they arrived. I am also very impressed with the Kitchen Aid mixers because it appears the they are very well made, and are easily repaired if they do break. I was surprised to find a small appliance that is repairable. Many are now just throw away quality. I am a hero to my neighbors (they don't know how easy this was) and will keep the refrigerator magnet that was included with my parts order, for future repairs.

Watched the video. Ordered the parts. Watched the video again. Replaced the worm follower gear and bearings on the worm gear. Added grease. Installed new gear housing. Put it all back together and tested. Works like new. Now I get cakes and goodies again and have a happy wife who thinks I'm super handyman. Thanks

Open the package with the new screw and it looked like the screw was wider. I tried it to see if it goes in and as long as you screw it straight in, there was no problem.

The KitchenAid is "old school" in that it is held together with simple (but very stout) bolts and screws. I removed about 10 such fasteners, slipped off the gear retainer, and pulled it out. On Sunday, a very nice customer service rep helped me order the right part, but I did the rest on line in a matter of seconds. It shipped on Monday and arrived on Wednesday. Took about 10 minutes to put everything back. I REALLY WISH everything was this easy in 2012!!!

I looked on line found the product sent in information and 3 days later was in my mailbox,great service and ease of ordering. thanks marjorie

Great experience. Reasonable cost. Quick delivery. Would certainly use PartSelect again

opened the mixer.. all screws in kitchaid are the same so not to worry... opened up and replaced the gears... and put it back together... diagram helped in that front and rear bearings of connecting gear are the same # on diagram it is easy to confuse when you put it back together, but the item number and description of each helped make sure it was in the right place. Otherwise... time to fix would have been less....

took mixer cover off, took gear box cover off, removed gears, replaced gears, replaced covers, made cookies, no problem!!