Broken front cover release knob on Viking 7 quart mixer
Viking 7 quart 1000 watt mixer
The small black knob that is part of the slow speed attachment cover release is broken on my machine and I need a replacement. Do you have one to sell and how much is it + shipping? If you don't have it, could you give me a source to get this piece. I know that it slides over the pin so installation, I can handle.
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You need to access the accessory attachment point, it's behind the silver KitchenAid logo on the front of the mixer. You'll need to unscrew a set screw (black knob at the very front of the mixer head), newer mixers have a hinged cover, on older mixers, it just pulls out. Unscrew the set screw a bit and fold up or remove the cover.
Now you will see a hole with a hollow square shaft inside, this is where the various optional items attach to the mixer.
Specifically for the shredder, you will need to attach a slicing drum to the drive shaft provided with the shredder, insert it through the drum, and raise the little bar in the rear of the slicer assembly.
Insert the whole assembly into the front of the mixer so that the square drive shaft shaft fits into the square hollow in the mixer, then lower the little bar to lock into place.
Make sure it's unplugged, remove and inspect the carbon brushes one at a time under those black screws on the side. They are keyed with one corner of the square ground off so will only go in properly one way so eyes open when you take them out. If they are less than 10mm long replace them. Next would be look under the back cover for a broken wire to the black square speed control plate. Broken wires are only likely to be one of the bottom 2 on either side. Any more testing is going to require a multimeter.
Remove the brush caps on the sides of the motor housing and check the carbon brushes. If they are worn out replace them. They are keyed and will only fit properly one way so be observant. If that's not the problem remove the back cover and check for broken wires on the black control plate. Make sure the switch on the bottom inside of the control plate is making contact. If still faulty check the cable for continuity to the control plate, cable connects to the black wire and the white wire on lower left of control plate. After that you need to check for continuity of the field coil windings. Only thing left after that would be the phase board pcb just above black speed control plate at the back.
But!!!! there could be a break in the grounding wire inside the back of the mixer motor head, it is easy to check. face the rear of the mixer and look at the top you will see a small screw, remove it and gently lift the rear cover up and out muck more up than out (you could break off the mounting ears on the bottom of the rear cover) then look at the plug wires, white and black wires should be attached by clips to speed control switch the green grounding wire should be attached to the mixer frame with a screw, if it has come off then put it back on, the screw should have fallen out when the rear cover was taken off if the screw has come out, it may just be loose also so use a phillips head screw to tighten down. please let us know if this helped or you need more help there may be a more serious electrical problem that needs to be dealt with.
It may be a mechanical problem and it may be a problem with the small circuit board inside the machine. In order to inspect the mechanism, remove screw #23 and then remove the cover #24. Look for a spring item #4, which will be attached to the bottom of the control plate assembly, item #28. If it is not there then the plate will not return to the slow position.
Try moving the speed control knob abd watch the action of the speed control plate. It should move freely in and out. If not then check for binding and/or loose screws.
If all the above is OK then the problem is most likely the phase control board item #30. It can be purchased online for around $15 and is fairly easy to replace.
I took it apart, unplug unit, remove the small black
cover inside the stand portion, 1 screw. Underneath you will find four
screws with a white plastic wire junction.
Loosen two screws and remove the black and brown wires which connect to the control panel with the dial attached.
Remove rear attachment cover, front top cover, and front delonghi cover.
Remove top three screws where the blender attachment goes. Now remove the aluminum cover that covers the entire top.
Slip belt off. Remove three screws with plastic washers that attach motor to chassis.
Remove 2 torx screws that are located next to metal bar that keeps top half from swinging too far from bottom half.
Now you can pull the motor out and the control panel
with the dial. Remove the three slip on electrical connections on the
control panel and reinstall. Carefully remove the two slip on
electrical connections on the motor and reinstall.
Re-assemble and test unit.
I thought I had a
problem with the control panel or the motor, as it turns out the
connections were the problem. Carefully removing them and reinstalling
them solved the problem.
You need to remove the motor and find the heat protection fuse on the side of the windings. The fuse is rated at 140 and has a red tip. You might be able to get one from Radio Shack but Viking sells them for $3. Solder into place and take care not to overheat while doing so.
I had the same problem. Had to strip the machine down to get to the motor. On the top is a moving plate with various capacitors etc mounted. On the front side there was a Capacitor (At least I think it was) with the wire broken.
I resoldered it and the machine now works fine.