Tornado Timing Belt 150XL x 3/8″ 19233

The brush on a self-contained extractor is driven by a toothed timing belt rather than a friction V-belt, which is why it either drives properly or does not drive at all — there is no gradual slipping stage to warn you. Part number 19233 is the genuine Tacony 150XL x 3/8 inch belt for that drive on the MWH-800, Marathon 800 and Marathon 1200 machines.

Compatible Models for the Timing Belt 150XL x 3/8″

This part fits the following Tornado machines:

• Tornado 98164 MWH-800 8-Gallon Self-Contained Carpet Extractor
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series

A timing belt fails by shedding teeth, not by stretching. What you will usually see is the brush stopping under load while the motor keeps running: the machine sounds normal, the brush spins freely by hand, and the carpet comes up wet but unagitated. Tip the machine and look at the belt teeth. Rounded roots, missing teeth, or a shiny glazed face all mean the belt is done. Cracks across the back are the earlier warning and are worth acting on before the belt strips entirely mid-job.

Two things shorten belt life more than mileage does. The first is a seized or dragging brush bearing, which loads the belt far beyond what it was sized for — if you have just stripped a belt, turn the brush by hand before fitting the new one and feel for roughness or resistance. The second is debris in the drive: string, hair and carpet fibre wrap around the shaft and wedge into the pulley teeth, and a belt running over packed debris jumps and then shreds. Clear the pulleys properly rather than just pulling the visible strands.

Fitting a toothed belt is different from fitting a V-belt and the difference matters. It must sit fully engaged in both pulleys with the teeth seated in the grooves, not half-perched on a flange. Do not lever it on over the pulley edge with a screwdriver: that is how a new belt arrives with its cords already broken and fails in a fortnight. Release the tension properly, walk the belt on, then restore tension. Correct tension is firm with a small amount of deflection at mid-span — run bar-tight it destroys the brush bearings, run slack it jumps teeth.

Because the belt is inexpensive, the machine has to be tipped to reach it, and it takes the machine out of service the moment it goes, this is the classic part to keep on the van. Most operators who run these daily change it on a schedule rather than on failure, and inspect it whenever the brush is out for cleaning.

Do not substitute a generic belt of roughly the right length. 150XL describes the pitch, the length and the tooth profile, and a belt with the wrong profile will appear to fit, engage badly and chew both pulleys. Replacing a pair of pulleys costs many times what the correct belt does.

While the belt is off, check the brush bearings, the bearing blocks and the brush itself for wear. All of those live in the same place, all are cheap relative to the labour of getting to them, and a new belt running on worn hardware is a repeat visit waiting to happen.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What Tornado machines does the timing belt 19233 fit?

It is used on the Tornado 98164 MWH-800 8-gallon self-contained extractor, the 98166 and 98167 20″ Marathon 800, the 98168 12 Gallon Self Contained extractor and the 98168 20″ Marathon 1200 in all series. Call 763-535-0770 with your model number if you are not sure.

How do I know if the brush belt needs replacing?

The brush stops turning under load while the motor still runs, or the carpet comes up wet but not agitated. Tip the machine and inspect the belt: rounded or missing teeth, a glazed shiny face, or cracks across the back all mean it needs replacing. Cracking is the early warning.

My new belt stripped quickly — what went wrong?

Usually a dragging brush bearing or debris packed into the pulley teeth, both of which overload the belt. Turn the brush by hand before fitting a new belt and clear the pulleys properly. Levering a toothed belt on with a screwdriver also breaks its cords and causes an early failure.

How do I order the Timing Belt 150XL x 3/8″ (part# 19233) or get help?

You can add the Timing Belt 150XL x 3/8″ (part# 19233) 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.