4KV25H0XBK5 KitchenAid Mixer - Instructions

Removed four screws to remove main cover. Removed four more screws to remove fractured plastic gear housing cover. Removed retainer ring and slid two gears and dowel off main shaft. Lifted out remaining gear train and bearings, Removed all grease and metal chips from all components. Greased new gears and reassembled. Replaced plastic gear housing cover with oreviously purchased die cast replacement part. Assembled main cover.

removed metal strap around motor housing then remove the 4 screws holding top motor cover on, then removed the 4 screws that hold gear cover in place, remove long gear that is driven by the motor gear, then with ring pliers remove ring off long drive shaft and lift off worm gears. once all gears are removed --removed all the old grease ( do this to get all the metal shavings out from the failed gear) repace the grease in the gear housing and reassemble in reverse order

1, Removed trim piece (1 screw) 2, removed cover (4 screws) 3, removed speed switch assembly (2 screws) 4, removed gear cover (4 screws) 5, removed and examined 2 worm gears for wear. Gear cover was badly cracked, don"t know if it was caused by a previous repair or by heat, as old cover is plastic. Received new parts and installed them, 2 bearings, 2 worm gears, 1 new cover of diecast metal and a new gasket. All repairs made with a #2 phillips screw driver. My wife then made bread, and it preformed flawlessly.

Removed screw from back of mixer cover band and then removed the 4 side screws, lifted top off of mixer and removed screws from circuit board control switch, removing wires one at a time so as to install correctly. replaced screws in circuit board/control. Restored top of mixer replaced screws and the put cover band back on mixer.walla done

Bought a KitchenAid Pro Series stand mixer from Sam's Club about five years ago. The transmission gears stripped. It is failry easy to replace but you need to replace the worm gear and the pinion at the same time. Make sure all the old grease is removed completely to ensure no old shavings reaming in the transmission housing. Also, if you have a fiberglass transmission housing, inspect the housing closely to indetify any hairline fractures and do not fill the transmission assembly with too much grease becasue you need room for the housing to breathe when the unit is in operation. If you fill the housing too much and tighten it, it "WILL" crack the housing. You want enough gree to keep the asssemnly lubricated but not too much that when you run the mixer that it expands and cracks the housing.

I investigated the problem by opening the mixer (four screws) and examining the gear box. Two gears were stripped. I ordered them, using the parts diagram provided. They arrives in about two days. I disassembled the gear box, cleaning out all grease and inspected for further damage. The gears and housing were completely cleaned with solvent. The transmission was then reassembled and regreased with food-grade grease. The mixer is now reassembled and working well. I was very pleased with the price and simplicity of my repair, versus taking it to a repair shop.

First I removed the screws that hold the silver band and the top of the mixer (cover). I removed the cover. I then removed the 4 screws that hold the gear housing and removed the housing. I removed the worm gear and removed the bearings and the washer from the "old" worm gear and put them on the replacement worm gear. I took gear grease from the cracked housing and packed the replacement gear with this grease. I attached the gasket to the replacement housing. I placed the attachment gear into the replacement housing and placed the housing over the gear assembly. I then put the mixer back together and ran it for a few minutes to dispurse the gear grease. I just mixed up some bread dough and everything seems to be in working order. I have never done this before so I hope it will continue to function properly.

I read several stories online explaining that this was a problem with a speed sensor. In order to change the part I removed the motor cover (required removing 3 or 4 screws) and simply unplugged the old sensor from the speed control board and plugged the new one in. Took very little time and minimal effort. Mixer now runs like it did when it was new and cost much less than replacing the entire appliance.

Removed rear band screw and band
remove 4 screws from head assembly and remove mixer head
remove 2 screws fastening speed control switch
remove 4 screws from gear box cover
remove cover and slide out bevel gear and replace
remove retainer ring and slide gear off shaft.
reassemble in reverse order, apply grease to gear teeth.
first time 25 minutes to inspect and reassemble
2nd time 5 minutes to teardown,replace parts, and reassemble
All manufactured assemblies should be this nice to work on.

cant be any more easy honestly the hardest part is taking the wires off the old board, mine were on there very well so I used a pair of needle nose pliers to remove them CARFULLY ! other than that this repair is.. the silver "beauty ring" has a screw on the back of the mixer remove, then there are four screws around the top cover plate remove, then the 2 screws that hold down the speed control remove. STOP ! make sure to lable each wire BEFORE removing from the old speed control !! POOF then put on the new one and put your mixer back togather your done.

1. Removed the silver name band that encircles the mixer head by removing one philips screw at the rear of the head. 2. There are four philips head screws under the band. 3. Remove the four screws and lift the top half of the head from the machine. 4. Looking at the rear of the machine, the speed control is to the right (identify by the speed control knob. 5. Remove the two screws (philips) on each side of the speed control assembly. 6. Lift the speed control from the machine and let it hang by the connecting wires. 7. One at a time, remove the plugs that are connected to the speed control module and place then in the same location as the new part. 8. Set the old control aside. 9. Set the new controller in place and secure with the two philips screws removed during disassembly (note: do not over-tighten the screws as the tabs on the controller are plastic and can break if over-tightened). 10. Replace the cover and replace the four screws holding the cover in place and tighten securely. 11. Replace the beauty name place and tighten in place. This whole process took about 6 minutes from start to finish. The mixer now works like new.

after numerous calls to kitchen aide and ka repair centers - i decided that their remedy was to sell me a new or refurbished model -- so i decided to try the repair myself - why not - the appliance didn't function and their fix again was close to the price of a new one --- the fix - remove the band (small screw in back --- 4 screws hold on the top of the mixer - remove them and pull off the top -- the gears are at the front -- four screws hold the top in place- remove them and pull off the cover -- this is where it gets interesting - it's a little messy with the grease -- but clean out as much as possible --
the toughest part is then removing the retaining clip --- (a tool is avail at numerous hardware stores that will make it a bit easier about $20. ) but pry the clip up and slide off top -- remove gear - clean out completely - remove all old grindings -- replace gears -- add grease and reverse order... great fix -- even with purchase of pliers it was cheaper than any offer from kitchen aide....

Remove the top cover. Loosen the circuit board and remove the gear case. Remove the retaining clip on the gear shaft and remove the gears. Clean the old grease out and relube. reassemble in reverse order . Not a bad job at all.

Very happy to find that the new gear housing was metal, not plastic. The whole problem was poor design of plastic to hold metal gears. Removed housing held down by four screws, removed two gears that were damaged. Retaining ring was difficult to remove from retaining slot. New gears replaced the old ones, new retaining ring put in place, new grease packed into all gearing, new stronger metal housing put in place and the Kitchenaid industrial mixer is better than new. Very happy with the parts I purchased.

Removed the lid of the mixer. Cleaned all grease and removed the worm gear. Installed new gear and packed with new grease Installed lid and checked worked perfect. Easy repair.