Tornado 98166 tank assembly 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 – 015742. Screw #10-32 x 3/8" – 032613. Gasket – 068254. Wheel Shaft Bushing – 110775. PVC Male Adapter – 150886. Lock Nut – 150927. Hose Clamp – 160918. Screw 1/4-20 x 3/4" – 171609. Screw 1/4-20 x 4-1/4" – 1764410. Spacer – 3007011. Washer – 1888512. Washer – 1888613. Intake Filter – 1909714. 3 Stage Vacuum Motor – X103815. Gasket – X907916. 6" Clear Lid w/Black Ring – PX10317. Standpipe 16-3/4" – 1913918. O-Ring – 1914019. Recovery Tank (Order w/19241) – X385720. Bladder (8 Gallon) – 1921521. Standpipe Mounting Clamp – 1921722. Screw 1/4-20 x 1/2" – 1924023. Recovery Tank Retaining Bracket – 1927224. Tank Frame Member 11" – 1931625. Tank Frame Member (Sides) – 1931726. Tank Frame Member – 1931827. Recovery Tank Internal Pipe Assembly – 3105028. Recovery Tank External Pipe Assembly – 3105129. Gasket – 3141630. Screw 10-32 x 5/8" – X911831. Aluminum Coupler 3/8" MPT x 1-5/32" – 3217732. Inline Strainer – 3217833. Lower Bladder Mounting Plate – 3217934. Swivel Elbow 3/8" Tube (Nylon) – 3218935. Nylon Stem Adapter 3/8" I.D. Tube x 3/8" MPT – 3230836. Hose Bellow 1-1/2" x 23-1/2" – 16620The tank assembly carries both halves of the Tornado 98166 Marathon 800’s water system. On the recovery side are the recovery tank (X3857), which the parts book lists to be ordered with the chassis (19241), the 16-3/4-inch standpipe (19139) with its mounting clamp (19217) and O-ring (19140), the 6-inch clear lid with black ring (PX103), the intake filter (19097) and the three-stage vacuum motor (X1038) with its gasket (X9079). On the solution side are the 8-gallon bladder (19215), the lower bladder mounting plate (32179), the inline strainer (32178), the aluminum coupler (32177), the nylon stem adapter (32308) and the swivel elbow (32189). The recovery tank internal and external pipe assemblies (31050, 31051) move recovered water, the 1-1/2" x 23-1/2" hose bellow (16620) links the tank to the machine, and the frame members (19220, 19316, 19317, 19318) hold the tank in the chassis. 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 Tank Assembly Parts List
Frequently Asked Questions
What does the bladder do on the Tornado 98166 Marathon 800?
The 8-gallon bladder (19215) is the solution reservoir. It sits in the tank on the lower bladder mounting plate (32179) and collapses as solution is drawn out, which is what keeps the clean and recovered water apart in a self-contained extractor. Note that the 98166 takes the 8-gallon bladder; the larger Marathon machines use a different capacity.
My vacuum motor is loud or weak. What should I check before replacing it?
Check the intake filter (19097) and the motor gasket (X9079) first, then the 6-inch clear lid and black ring (PX103) and the standpipe O-ring (19140) for a leak that makes the motor work against false air. A three-stage vacuum motor (X1038) is one of the most expensive parts on the machine, so rule the cheap causes out first.
Water is leaking from under the tank. Where does that usually come from?
Start at the inline strainer (32178) and the aluminum coupler (32177) on the solution side, then the recovery tank external pipe assembly (31051) and the gaskets (06825, 31416). A leak that only appears while the pump runs is on the solution side; one that appears while vacuuming is on the recovery side.
Do I need to order anything with the recovery tank?
The parts book lists the recovery tank (X3857) with the instruction to order it with the chassis (19241), which is on the Chassis Assembly (Part 2) sheet. Check with us before ordering the tank on its own so you are not left waiting on the second half.
How do I order Tornado 98166 tank assembly 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.
The pump that feeds this tank is on the Tornado 98166 pump assembly 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.