Kenwood chef repair

BananaRepublic

Not sure I posted my original question in the right place so posted here too ...

The high speed spindle on my KMC510 Kenwood Chef is damaged such that the liquidiser attachment cannot be used. The main mixing output works, so I can make bread dough etc. How do I repair this please?

I can buy a new spindle on ebay, about £5, and I can remove the top gear assembly and the top cover, exposing the spindle more clearly, so I can see the motor. The spindle is held on with a pin but I cannot get to it. It looks like I have to remove the roughly rectangular aluminium housing to which the speed rotor dial is attached and which encloses the motor. I can't see a way to do that. I've gone as far as I can without risking damage. Advice appreciated.

Thanks, BR

BananaRepublic

No-one know?

Smiley_Dan

Not sure if there's anything here that might be useful: https://www.ifixit.com/Search?query=kenwood+chef

BananaRepublic

Thank you, it might be of some use.

chappers

BananaRepublic wrote: »

No-one know?

Without seeing it probably not, its hardly a common problem a schematic would help.

BananaRepublic

If I had a schematic, I might have the solution. I can partially dissasemble it, but there is a danger of damage if I go further. I suspect the problem is not uncommmon, it's easy to damage the high speed spindle (the output geat on the top of the machine).

ora_tevzre2

I did this exact fix at the weekend on my sister's KM336 mixer. The pulley had been worn down by the belt/liquidizer.


What you have to do is the following.

(briefly: you need to remove the motor to remove the cog)

1. Unplug the mixer *** IMPORTANT ***
2. Open the mixer (as if you were going to connect the K-beater).
3. Undo 2 screws so that you can slide back the black cover (you will need a star screwdriver)

Note: You will need star screwdrivers of 2 different sizes. I think the star size to release the motor on the liquidizer housing cover are bigger than some of the others. The best thing would be to get some hex star screwdriver bits and a hex screwdriver. The kind of thing one used to be able to buy in Woolworths.

4. Remove the screws and the plate (rotate it 90 degrees to get it off). Make a note of the original position for later.
5. Slide the black cover down and slide the curved metal bar down to get it out of the way.
6. You need to disconnect 2 white power connectors (this should not be too difficult, they should just slide off, one may have a plastic clip).
7. You can now remove the speed knob assembly (might need to wiggle it a bit).

(you have probably already done the following)

8. undo 3 screws where the liquidiser connects and remove them, and the circular plastic housing, and the metal plate.
9. remove the front cover of the mixer (where the mincer, cheese grater connects)
10. lift the white cover off the top (from the back) to reveal the top of the motor (where the broken pulley/cog is).
11. undo 3 larger screws (which have white washer cups underneath them and remove the cups also (keep these safe somewhere).
12. Remove the drive belt. Check for damage to the rubber teeth. If it is damaged you may need to replace it.

You should now be able to remove the motor from below. You may need to swivel the black cover out of the way.
The motor should come out as a single unit. *** Make a note of the position of the motor so that when you put it back it it is the right place ***.

edit: When you take the motor out it is covered in a white plastic cover. You need to remove this cover as it will give you better access to the cog which needs to be removed. To do this just squeeze it at right angles to the clips and it should pop open (a bit like opening one of the toys inside a Kinder egg).

Most Tricky part

---

You should now be able to see how the pulley is secured. There is a steel cotter pin holding it to the motor shaft. You need to remove this pin (and may need to re-use it because the one from ebay may be wider).

13. You need to get a suitable size nail and hold it against the pin and hit it with a hammer. Start off gently and hit it progressively harder until you can see it move a little. Then gently tap until its all the way out. Once it is over half way you may be able to prise out out with some pliers/grips. The key to this stage is ALOT of patience (you dont want to bend/break anything).
14. Once the pin is removed you will be able to remove the pulley (it just pulls off) and replace it with the new one.
15. Hit the pin back in using the reverse process you used to get it out.

Finally, you need to repeat all the steps listed above IN REVERSE.

I did this on Saturday to repair my sister's mixer and it it working fine.

Good Luck

If you have any questions please ask.
Ben

BananaRepublic

Hello Ben

Thank you very much. You are an absolute star. I will get a star screw driver.

Yours, Leif

ora_tevzre2

Note: You will need star screwdrivers of 2 different sizes. I think the stars to release the motor on the liquidizer housing cover are bigger than some of the others. The best thing would be to get some hex star screwdriver bits and a hex screwdriver. The kind of thing one used to be able to buy in Woolworths.

Just one additional thing I forgot. When you take the motor out it is covered in a white plastic cover. You need to remove this cover as it will give you better access to the cog which needs to be removed. To do this just squeeze it at right angles to the clips and it should just pop open (a bit like opening one of the toys inside a Kinder egg).

Please keep me updated. I would be interested to know how it goes.

BananaRepublic

Hello ora tevzre

Everything went smoothly. I was pleased to see that any structural components are well made from diecast aluminium. Some cheap plastic inside, but only for covers that do not take load. The screws underneath, retaining the plastic cover, were a bit tight when putting them back, not sure why, but they don't seem to be cross threaded, maybe it was temperature effect i.e. thermal expansion.

I was worried about removing the screws underneath the machine, but I needn't have been, as you know. It is easy to take it apart, almost like Lego, no wonder these things last decades. My late mother's was maybe 20 years old when she passed away, and my sister has been using it for another 10 years, not bad!

Again, many thanks. Much appreciated. I have a fully working Kenwood Chef.

ora_tevzre2

Thanks for the feedback. Enjoy your working Kenwood chef.