Tornado Tempest Spring Washer (5 Fitted) K73130170

The Tornado Tempest spring washer (part# K73130170) is a locking washer used on the Electronics assembly of the TV400-W26-U cordless wide-area sweeper. Tacony lists it simply as Spring Washer. The Tempest uses two different spring washers on this assembly, and this is the one fitted in the group with the M4 hex nut (part# K73110010), with five fitted on the machine.

A spring washer is not a spacer and not a plain washer. It is split and slightly helical, so tightening the nut flattens it and stores tension in the joint. That stored tension is what keeps the fastener loaded as the assembly heats, cools and vibrates — it is the reason the electronics plate on a machine that runs on brushes and a blower does not slowly shake its fixings loose. Once a spring washer has been flattened solid, or has taken a set, it no longer stores that tension and should not be reused.

Compatible Models for the Spring Washer

• Tornado Tempest Wide-Area Cordless Carpet Vacuum Sweeper — Model TV400-W26-U

When to replace it

• The washer has been compressed flat and no longer springs open when removed.
• It is cracked across the split, which is how a fatigued spring washer usually fails.
• Corrosion has pitted the faces so it cannot seat evenly.
• A fastener on the electronics plate has been found loose during service.
• Any time the joint it secures has been dismantled — these are inexpensive and are intended to be renewed, not reused.

Fitting notes

Remove the battery pack before working inside the control area. Fit the spring washer between the hex nut (part# K73110010) and the plate, not under the screw head, unless the original was arranged otherwise — note the order of the stack as you dismantle it. Tighten until the washer is just flattened; going beyond that adds no clamping force and only fatigues the washer.

Telling the two apart. The Tempest uses two spring washers on this assembly and Tacony publishes no dimensions for either, so we identify them by how many are fitted: this is the one used in the group of five. The other is part# K73130160. If you are unsure, call 763-535-0770 with your part number and we will confirm it.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Browse the full Tornado Tempest parts range, or see the Tornado Tempest TV400-W26-U machine. Manufacturer information is at tornadovac.com.

Frequently Asked Questions

What does the spring washer do on the Tornado Tempest?

It is a split, slightly helical locking washer. Tightening the nut flattens it, and the tension it stores keeps the fastener loaded against the heat cycling and vibration of a machine running a brushroll and a blower, so the joint does not work loose.

How do I know if my spring washer needs replacing?

If it stays flat when removed rather than springing open, or it is cracked across the split, it has lost its tension and must be renewed. As a rule, fit new spring washers any time the joint has been apart — they are designed to be renewed rather than reused.

What models is the spring washer (part# K73130170) compatible with?

The Tornado Tempest TV400-W26-U wide-area cordless carpet sweeper. PartSmart lists this washer against the Tempest alone.

The Tempest lists two spring washers — how do I tell them apart?

They are distinguished by the fastener group they belong to on the factory Electronics sheet. Part# K73130170 is the one fitted with the M4 hex nut (part# K73110010), five on the machine. Tacony publishes no dimensions for either, so if you are unsure, call us at 763-535-0770 and we will confirm against your machine.

How do I order the spring washer (part# K73130170) or get help?

You can add the spring washer (part# K73130170) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.

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