Caterpillar sold the tracked tractors to Agco in 2002, and the brand changed to Challenger. Production was moved to Agco’s factory in Minnesota. The MT700 series had already been developed before Agco’s ownership. It was clearly more robust than the previous models 35-55, which partly used New Holland technology. The weight was now 14 tons instead of the predecessor’s 9 tons. A common feature of the model range was a continuously adjustable track gauge. Steering in the Challengers was not done by braking the tracks but by adjusting their relative speed difference using a planetary gearbox driven by a hydraulic motor located in the differential.

The engines were now Caterpillar’s 8.8-liter units instead of the previous 6.6 liters and equipped with four-valve technology. The emission level was EPA Tier II. Road speed had increased to 40 km/h in versions brought to Europe. The 16+4-speed Powershift transmission and the rear axle were also manufactured by Caterpillar. The weight distribution was 40/60, aimed at balance for pulling tasks. The tracks were hydraulically suspended. Standard features included 4 electrically controlled hydraulic remotes and power beyond. The lifting capacity was 11.7 tons. The cab was clearly larger than before. The electrical system was based on a CAN bus. Headland automation was standard.

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