Thread Number: 25352
Kitchenaid KD21 tech tip
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Post# 390839   11/4/2009 at 20:11 (5,258 days old) by jdexter ()        

Salutations:

Very pleased to report that the KD21 (KD21AC on the door panel) Superba Whisper Quite is working near perfectly and that I couldn't be more pleased.

When we fired it up I noticed that buttons were sticky and that the cycle timer was notably loud. I thought this must be related to the air dry feature, where it must blow the air out through the door panel rather than a fixed vent.

I noted that there was a dusty white powder on the drain cog which must have once been grease and would confirm the movement of hot air in the clock and switch gear.

So - I removed the control panel and applied a very light dab of 'Honey Goo' (NAPA) lube to the button blades, the primary timer gear wheel and the drain cog.

WD40 and similiar anti-seize lube simply washes out the contact surface and about a week later - leaves the clock parts running on bare surfaces and often now gritty plastic-to-metal surfaces.

We dealt with something like this on our vintage motorhome, so I can assure folks that while they built these to really last - what lubrication as is left has likely long ago failed and will prove to be a very costly repair if not dealt with upon re-light.

The 'Honey Goo' product is a food safe penetrating lube that usually doesn't require a re-application for several months. It will clean out the matting surfaces of any debris or dry grease as it runs.

The trick here is not to use too much Goo - but just enough to make sure that the parts aren't rubbing dry on one another.

This was easily achived by tripping 'normal wash' - then hitting cancel and popping a little dab of spray at 1/4 turns on the gear and cog. Takes about 60 seconds for it to cycle completely - I did it twice, then wiped off any excess I could get at with a paper towel.

Later - I'll re-apply the white-lithum grease that must have came from the Singer Control factory and leave it alone for the next 25 years.

Next up - the microfilter for the pump-top. I'm sure I now know what it is made of and will try to make up a replacement mat.

Cheers and best wishes.

Jon



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