Tornado Tempest Adjustment Knob Bushing K51120430

The Tornado Tempest adjustment knob bushing (part# K51120430) is the bearing sleeve that the brush height adjustment knob (part# K53224590) turns in on the TV400-W26-U cordless sweeper. Tacony lists it as Bushing, Adjustment Knob. The Tempest uses three different bushings; this is the one specified for the adjustment train.

The bushing does two things at once. It lets the knob turn smoothly, and it holds the knob concentric so the splines engage the lever squarely. As it wears the knob develops play, the splines start to engage on one side only, and the adjustment begins to slip under the load of a brush pressed into carpet — which presents as a height setting that will not stay put.

Compatible Models for the Adjustment Knob Bushing

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

Symptoms that point to the bushing

• The adjustment knob has noticeable side-to-side play.
• The brush height setting creeps during use.
• Turning the knob feels gritty, notchy or tight in one part of its travel.
• The knob sits visibly off-centre in its aperture.
• A new knob was fitted and the play remains.

That last case is the useful one. If a new adjustment knob still has play, the bushing it turns in is worn and is what is actually allowing the movement.

Fitting notes

Remove the battery pack before starting. The bushing sits in the battery mount (part# K50321850) with the knob through it and the lever (part# K51297940) behind. Note the brush height setting before dismantling. Fit the bushing dry unless the machine originally had it lubricated — grease here collects carpet fibre and eventually makes the adjustment stiffer, not smoother. Check for zero play and smooth full travel before reassembling.

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 adjustment knob bushing do on the Tornado Tempest?

It is the bearing sleeve the brush height adjustment knob turns in. It keeps the knob turning smoothly and holds it concentric so its splines engage the lever squarely.

How do I know if my adjustment knob bushing needs replacing?

Side-to-side play in the knob, a brush height setting that creeps during use, or gritty and notchy rotation. If a new knob still has play, the bushing is the cause.

What models is the adjustment knob bushing (part# K51120430) compatible with?

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

The Tempest lists three bushings — is this the right one?

This is the bushing Tacony specifies for the adjustment knob, part# K51120430. The other two serve different assemblies and are different part numbers. Order by number, or call 763-535-0770 and we will confirm against your machine.

How do I order the adjustment knob bushing (part# K51120430) or get help?

You can add the adjustment knob bushing (part# K51120430) 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.