McConnell Mark 990 Articulated Tractor: History, Specs, and Field Operation

McConnell Mark 990 Production History

• 🚜 The McConnell Mark 990 articulated four-wheel drive tractor was manufactured in Kingston, North Carolina, between model years 1991 and 1994.
• 💡 It was powered by a 12.9 L Detroit Diesel Series 60 turbocharged engine, producing 390 horsepower.
• ⛽ A large 190-gallon diesel fuel tank was standard.

Tractor Specifications and Options

• ⚙️ Customers could choose between a standard 12 forward/4 reverse speed gear drive transmission or an optional Eaton Fuller 18 forward/2 reverse speed transmission.
• ⚖️ The tractor weighed 36,000 lbs and could be field weighted up to 40,375 lbs.
• 💰 The original list price when new was $128,000.

Operator's Perspective and Cab Features

• 🌟 The cab was noted as being the largest in the industry in the early 1990s, offering a great ride and ample power.
• 🎯 The tractor was shown preparing ground for peanut planting with a John Deere 2800 1018 moldboard plow.

Ownership and Historical Context

• 🔑 Ashton Lewis, the current owner, is a Detroit Series 60 enthusiast and owns several trucks with this engine.
• 🤝 The tractor has a connection to Ward McConnell, whose father founded the company, and even Mark McConnell himself drove it.
• 🏭 The tractor design was purchased by Agco in 1994, and the design was moved to Coldwater, Ohio.

Massey Ferguson and McConnell Mark Connection

• 🚜 The McConnell Mark 990 shares design elements with Massey Ferguson 5200 tractors, which were produced starting in 1989.
• 📉 Sales of these tractors were low due to farmers not making money, leading to the transition to Agco.
• 🧐 The exact number of units produced is unknown, but they are considered rare, with some models featuring Massey decals or being sold as 5200s despite having 990 serial numbers.

Engine and Transmission Details

• ⚡ The Detroit Series 60 engine is praised for its reliability, starting easily even on cold mornings without ether.
• 🕹️ The 18-speed transmission and closed-center hydraulic system were noted as advanced features, possibly originating from AgcoStar.
• 🧐 Some tractors were equipped with Detroit 855 engines, and a rare 1000 model reportedly had a Caterpillar engine.

Collectibility and Color Variations

• 🎨 The color variation between red and yellow is a mystery, with a suspicion that the yellow is early Penske truck yellow, as Roger Penske was involved in early development.
• 🌟 The tractor is considered a collectible piece of agricultural history from the early 1990s.