Tornado Spring Washer K66456640

This is the genuine spring washer (part# K66456640) used in the rear assembly of the Tornado Strike TV190-W10-U and the Tornado Zephyr TV570-Q03-U. Three are fitted to the Strike. Tacony does not list it in the dealer catalogue, so it is a call-for-price item rather than one we will invent a figure for.

Compatible Models for the Spring Washer

• Tornado Strike TV190-W10-U cordless upright vacuum
• Tornado Zephyr TV570-Q03-U cordless upright vacuum

This part is not exclusive to the Strike. Tacony’s parts records list part# K66456640 against two machines — the Strike TV190-W10-U and the Zephyr TV570-Q03-U — which is why the title carries the brand rather than a single model name. Three are fitted to the Strike.

What the Spring Washer does

A spring washer maintains clamp load on a fastener as parts settle and temperatures change. In a motor compartment that heats up and cools down every shift, that settling is constant, and a fastener with no spring behind it loses its grip gradually rather than all at once. The washer is what keeps the joint tight between services.

Signs the Spring Washer needs replacing

Replace on reassembly rather than on inspection. A washer that comes out flat has no spring left in it, and one that is cracked or distorted should not go back at all. Finding a loose fastener during service is the other prompt — fit a new washer rather than just retightening.

Fitting the Spring Washer

Fit a fresh washer under each of the three fasteners as they go back, tighten to snug and stop. These run into plastic bosses, so the failure mode of over-tightening is a stripped boss rather than a broken screw. Confirm each washer sits flat before final tightening.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. You can browse the rest of the machine on our Tornado Strike parts pages, and the manufacturer publishes specifications at tornadovac.com.

Frequently Asked Questions

Why is there no price shown?

Tacony does not carry part# K66456640 in the dealer catalogue we buy from, so there is no published price to quote. Call 763-535-0770 and we will confirm price and availability before ordering.

How many does the Strike use?

Three, in the rear assembly. The factory parts sheet lists a quantity of three for this washer.

What is the difference between a spring washer and a lock washer here?

Both resist a fastener working loose, but they do it slightly differently and the machine specifies each in particular places. Use the part number the diagram calls for rather than substituting one for the other.

How do I order the Spring Washer (part# K66456640) or get help?

The Spring Washer (part# K66456640) is a call-for-price item, so ring us on 763-535-0770 and we will quote it and check stock while you are on the line. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can confirm it is the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.