KCC151 KitchenAid Trash Compactor - Instructions

I pulled the trash compactor out from under the counter.

I took out the four screws that kept the top cover in place to expose the ram.

The gear shafts were turning but the ram would not lower, at first I though the ram drive bolts were stripped and it wouldn't engage the shaft. Then I realized there was a mechanical directional\limit switch at the top that controlled the power and direction the gear shafts were turning, this switch was broken.

Just had to take off the front plate that was held on by a number of screws and replace the switch that was held on by two more screws. It had five wires attached to it, the new switch was clearly labeled as to which color wire went where.

Pulled the Compactor from underneath cabinet, unplugged power. Removed the top plate off compactor to expose the crush piston. Removed the front control panel by removing two phillips screws, wiring and directional (limit) switch is now exposed. Removed the two screws securing switch, removed wiring one wire at a time and replaced on new switch in same position. Replaced switch in same manner as removed, and followed reverse of above to re-assemble. Plugged back in and tested, problem resolved works like new. Only took possibly 30" to repair and saved an expensive service call.

Original key part number was 776586 as found underneath the the rim of the broken key. It's known as a compactor key, or a key-knob, but in layman's terms, I would call it the "off-on-start" knob. The replacement part number was 386676, and fits perfectly.
The original key had become old and brittle, and eventually just broke apart. This was a 30+ year old Whirlpool Trash Compactor key. I just picked out the bits of the old broken key with needle-nose pliers and then easily inserted the new key into the opening.
Note, this literally works just like a key you would insert into any lock. It doesn't require pushing to "snap" into place, but once inserted and turned to the "ON" position, locks into place. No forcing is required at all.
The new key looks exactly like the original and is working very smoothly.

Took off front panel and replaced the directional switch which I thought was the problem. However, the problem continued. I read on line it could be the "centrifugal" switch on top of the motor. I haven't gotten around to taking it apart yet to see if that is the problem because it is more involved down under and in the back. That switch cost $88.
Any suggestions from others?

Removed two screws on the front panel cover and lifted off the cover , removed two small screws on the switch bracket, you need a short nut driver, removed the spade clipped wires from the old switch and replaced them on the new part and thats all there was to it.

replaced switch and fixed the problem. Still had one more problem after that though, but got that figured out and fixed that to.

I broke the directional switch trying to replace the power nuts..duh huh... ordered a new switch, took off the front panel ( 4 screws) replaced the switch (2 bolts) be careful not to lose the small threaded plate used instead of nuts to secure the switch.. and now it works like new again....partselect is a great resource for the diyer

changed out the switch and that fixed the problem

Put the parts in and reinstalled it back in it place

Remove the compactor drawer. Remove the front cover from the controls. TAKE A PHOTO OF THE WIRING TO THE EXISTING SWITCH! Remove the screw from the side of the switch and pull the switch out from the machine. You have to look very carefully at the switch to see the color labels on each prong of the switch. Attach gray wire to top prong (GR), red wire to middle prong (R) and so forth. Compare your work to the photo you took. Replace the switch, front plate and drawer. IT WORKS. YAY. Warning, my husband is dyslexic and attached the wires in reverse order and the compactor did not run at all. So, be sure you match wire to label.

REMOVE COMPACTOR DRAWER
REMOVE SCREWS ON FACE PLATE
REMOVE SCREW NUTS ON PART (SOCKET)
SAVE HOLDING PLATE WITH SCREW NUTS
TAKE PICTURE OF WIRE CONECTIONS (IN CASE OF POOR RECALL
USE PLYERS TO PULL CONECTOR OFF OLD SWITCH
REVERS INSTALL
TOTAL 25 MINUTES

Replaced the limit switch. This did not alter the problem. Took off the On/Off/Start switch and dissasembled. I found the the Start switch was stuck in the on position. I reassembled the switch mechanism assuring that the Red "ON" indicator moldings were correctly positioned and reassembled everything. The Compactor now works properly. Need to add "Check the Start switch" to diagnosis.

The part was suppose to come with instructions, but did not. However, it was easy after reading the comments on-line, and discovering that the front cover had to be removed in order to expose the whole switch and wires. I did drop one of the mounting screws down the front of the compactor and was not able to recover it. So, I had to make a trip to the hardware store for a replacement. They couldn't match the remaining screw but I found 2 similar ones with lock washers and nuts that worked just fine. I saved a $90 service charge and probably double the cost of the switch by doing it myself.

I removed the unit from under the kitchen counter by first pulling the trash drawer all the way out and lifting it out of the track and setting it out on the floor. I then slowly pulled the compacting unit out and unplugged the cord from the electrical outlet. With the entire unit out in the floor I took a nut driver and removed the screws from the top plate and the screws from both sides at the bottom of the front housing. This allowed access to the directional switch. Two screws on the right side of the switch have to be removed to remove the switch along with two holding plates on the left side of the switch. The switch can then be accesses for removal. Several wires are attached to the switch and should be removed one at a time and installed to the identical identical location on the new switch. The new switch can then be installed by aligning the holes and reinstalling the holding plates. When this is done the front frame and top plate can be replaced with the nut screws. Plug back into the electrical outlet and see if it works. In this case it did exactly what it was doing before I started. So either I did not reinstall the directional switch properly or I am in the one percent rather than the 99 percent that should successfully solve the problem as suggested in the trouble shooting guide. I will now recheck the installation of the directional switch nd then check the bottom of the unit to see if the gears or chain drive are broken .

Pull unit from under counter (Held in place with 2 screws) Use nut driver to remove top and front panel. (I didn't remove the control panel from the front panel which probably made access more difficult) Locate the directional switch near the top of the unit and remove two screws, being careful not to lose a small metal plate into which the screws thread (similar to a Tinneman nut). I moved the wires one at a time from the old switch to the new as I am color blind and have trouble with wire colors. Fit the new switch in place, being sure the switch lever is positioned against the metal tab that operates it. Screw the switch in place and then reassemble the compactor.