Tornado 98166 chassis parts for the Marathon 800 self-contained extractor, Model 98166. Can’t find your part? Call us at 763-535-0770.
Click on any numbered part in the diagram below to go directly to that part’s product page.
1. Lock Washer – 015743. Wheel 10" – 026615. Ext E Retaining Ring – 034707. Screw 1/2-13 x 1" – 054418. Screw 1/4-20 x 1/2" – 0619214. QD Coupler 1/4”M x 1/4” FPT – PX515. Lock Nut – 1509217. Washer – 1785019. Axle – 1914320. Axle Retaining Clamp – 1914421. Nut – 1914522. Hinge 1/4" x 2" – 1914823. Shroud/Nozzle Mounting Bracket Weldment – 1915524. Nozzle 20" (order w/19197) – 1916825. Screw 3/8-16 x 1-1/4" – 1917128. Screw 1/4-20 x 1/2" – 1924029. Chassis – 1924130. Spacer – 1925934. Screw M4 x 16 – 23192Chassis Assembly (Part 2) is the structural half of the Tornado 98166 Marathon 800 frame. The chassis (19241) itself is here, along with the axle (19143), the axle retaining clamp (19144), the external E retaining ring (03470) and the pair of 10-inch wheels (02661) the machine rolls on. The 20-inch nozzle (19168) — which the parts book notes should be ordered with the nozzle hose adapter tube (19197) — mounts to the shroud and nozzle mounting bracket weldment (19155), hinged on a 1/4-inch by 2-inch hinge (19148). The quick-disconnect coupler (PX5) is the solution-side connection point, and the balance of the section is the fastener and spacer set: the 1/2-13 x 1" screw (05441), the 3/8-16 x 1-1/4" screw (19171), the 1/4-20 x 1/2" screws (06192, 19240), the M4 x 16 screw (23192), the lock nut (15092), the nut (19145), the lock washer (01574), the washer (17850) and the spacer (19259). Twin City Vacuum has been selling and servicing Tornado equipment since 1956. Call 763-535-0770 or stop by 5415 West Broadway, Crystal, MN 55428.
Tornado 98166 Chassis Parts List (Part 2)
| # | Image | Part Description | Part Number | Price |
|---|---|---|---|---|
| 1 |  | Tornado Lock Washer 1/4″ Heavy Series 01574 | 01574 | $2.99 |
| 3 |  | Tornado Wheel 10″ 02661 | 02661 | $98.99 |
| 5 |  | Tornado External E Retaining Ring 03470 | 03470 | $1.99 |
| 7 | Tornado Screw Socket Head Cap 1/2-13 x 1″ Stainless 05441 | 05441 | $5.99 | |
| 8 | Tornado Screw Phillips Truss Head 1/4-20 x 1/2″ Zinc Plated 06192 | 06192 | $2.99 | |
| 14 |  | QD Coupler 1/4”M x 1/4” FPT PX5 | PX5 | $12.99 |
| 15 | Tornado Lock Nut 15092 | 15092 | Call for price | |
| 17 |  | Tornado Washer Plain #10 I.D. Stainless 17850 | 17850 | $2.99 |
| 19 |  | Tornado Axle 19143 | 19143 | $24.99 |
| 20 |  | Tornado Axle Retaining Clamp 19144 | 19144 | $17.99 |
| 21 | Tornado Nut 19145 | 19145 | Call for price | |
| 22 | Tornado Hinge 1/4″ x 2″ 19148 | 19148 | $61.99 | |
| 23 | Tornado Shroud/Nozzle Mounting Bracket Weldment 19155 | 19155 | $85.99 | |
| 24 |  | Tornado Nozzle 20″ Aluminum 19168 | 19168 | $192.99 |
| 25 |  | Tornado Screw 3/8-16 x 1-1/4″ 19171 | 19171 | $2.99 |
| 28 |  | Tornado Screw Hex Head Cap 1/4-20 x 1/2″ Stainless 19240 | 19240 | $1.99 |
| 29 | Tornado Chassis 19241 | 19241 | $521.99 | |
| 30 |  | Tornado Spacer 19259 | 19259 | $11.99 |
| 34 | Tornado Screw M4 x 16 Pan Head 23192 | 23192 | $1.99 |
Frequently Asked Questions
Which wheels does the Tornado 98166 Marathon 800 use?
The 98166 rides on 10-inch wheels, part 02661, retained on the axle (19143) by an external E retaining ring (03470) and held to the frame by the axle retaining clamp (19144). The same wheel is also listed on the machine’s Service Parts sheet as a routine wear item.
Do I need to order anything with the 20-inch nozzle?
Yes. The parts book lists the 20-inch nozzle (19168) with the instruction to order it together with the nozzle hose adapter tube (19197), which is itself on the Main Assembly sheet. Ordering the nozzle alone leaves you without the adapter that connects it to the recovery hose.
Why are some chassis callout numbers on a different page?
The Series F chassis is drawn over two sheets that share a single callout sequence. This page carries numbers 1, 3, 5, 7, 8, 14, 15, 17, 19 through 25, 28, 29, 30 and 34; the rest are on Chassis Assembly (Part 1).
My machine wobbles or drags on one side. What usually causes that?
Start with the wheels (02661) and the axle retaining clamp (19144) — a loose clamp lets the axle shift, and a worn wheel bore lets it rock. Then check the hinge (19148) and the shroud and nozzle mounting bracket weldment (19155), because a bent bracket drops one side of the nozzle.
How do I order Tornado 98166 chassis parts or get help?
Add any part on this page to your cart, 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.
Part 1 of this assembly is on the Tornado 98166 Chassis Assembly (Part 1) page, and every section is listed under Tornado 98166 Marathon 800 parts. Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428. Manufacturer information is available at tornadovac.com.