Sources and field evidence
Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.
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Engineering & Capability Benchmark
Specific output, tractive ratio, and segment percentile
Engine and power specifications
- Engine model
- Cummins NTA-855
- Fuel type
- Diesel
- Rated horsepower
- 335 hp
- Rated PTO Power
- 300 hp (Steiger specification)
- Cylinders
- 6
- Displacement
- 14 L (855 ci)
- Bore / stroke
- 5.50x6.00 inches 140 x 152 mm
- Rated RPM
- 2100 RPM
- Crankcase oil capacity
- 41 qts (~38.8 L)
- Coolant capacity
- 66 qts (~62.4 L)
Maintenance picks for the 9170
Oil capacity 41 qts — match the filter before you drain.
Transmission and chassis specifications
- Transmission type
- Full power shift (12F/2R)
- Gears (forward / reverse)
- 12 forward / 2 reverse
- Drive system
- 4WD
- Wheelbase
- 141.3 in
- Front tire
- 23.1-24
- Rear tire
- 23.1-24
- Hydraulic flow
- 40 GPM
- Rear hitch
- IV Opt Optional
Implement Draft & Ballast Matcher
Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for Steiger 9170.
Theoretical draft formula suggests 38,525 lbs. Official manufacturer GVWR is unrecorded for this catalog entry, so target weight is constrained to an engineering structural estimate (~135% of base operating weight) to prevent chassis overload.
Engine demand (343.8 HP) exceeds rated power (335 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.
Tractor is currently light for this heavy draft tool. Add ~3946 kg (8,700 lbs) ballast to prevent tire slip and premature wear.
Target ballast is capped at 37,700 lbs based on structural engineering estimate (~135% base weight; official manufacturer GVWR unrecorded). Avoid adding excess ballast beyond this benchmark to protect axle bearings and chassis.
Instant Used Market Valuation Projector
Algorithmic resale estimate for Steiger 9170 (1986)
Direct Segment Rivals & Showdowns
Head-to-head match-ups calibrated by horsepower and era
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Steiger
International • 81 Models
Steiger Tractor Company, founded in 1957 by John Steiger, emerged as a pioneering force in the agricultural machinery industry with its innovative large four-wheel drive tractors. The brand's origins trace back to a dairy barn in the US Midwest, where John Steiger crafted his first tractor, laying the foundation for a company that would revolutionize farming operations with its powerful machinery. By 1969, Steiger had grown significantly, producing 126 tractors and relocating to a state-of-the-art factory in Fargo, North Dakota. The company's tractors quickly gained a reputation for their durability and performance, making Steiger a trusted name among large-scale farming operations. However, the early 1980s brought economic challenges as a struggling farm economy impacted sales, ultimately leading to the company's bankruptcy. In 1986, Steiger was acquired by Tenneco, the parent company of Case-International, marking a pivotal moment in its history. Under new ownership, Steiger tractors continued to be produced, but the iconic green models were discontinued by 1990. Today, the Steiger legacy lives on as Case IH utilizes the Steiger name for its line of large four-wheel drive and Quadtrack tractors, honoring the brand's heritage of power and innovation.
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