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The Challenger 35, 45 and 55 tractors signal a new direction in row-crop versatility, with row spacing and horsepower to match your planting, cultivating and tillage requirements. Choose from two tractor chassis, including our exclusive Wide-Track™ version with settings from 80 to 120 inches wide - enough to straddle four 30-inch rows at a time.

Patented Mobil-trac™ Undercarriage Take a Closer Look

• 	Exclusive Cat track design is industry's most advanced
• 	Backed by Caterpillar's centruy of track experience
• 	Improves traction and flotation
• 	Lowers compaction by spreading weight across five axles
• 	Translates more power to the ground for performance, improved fuel efficiency
• 	Designed as an integral part of the Challenger tractor, not an add-on
• 	Two locations allow mounting of chemical tanks
• 	Hardbar elastomerically mounted for reduced vibration, smoothest in-field ride of any tractor in the industry
• 	26,900 pounds track tension help reduce slip and improve performance

Exclusive Cat Belts • Widest choice available: five belt widths (16 to 32 inches), two tread-bar styles • Designed and manufactured for Challenger tractors in a Caterpillar facility • Inside, patented arrangement of heavy-duty steel cables delivers maximum lateral resistance • Durable guide blocks maintain belt alignment and improve belt tracking • Excellent mud rejection in gummy conditions

Track (Gauge) Spacing Testimonials

  	Tractor
• 	Choice of two chassis: adjustability ranges from 60 to 90 inches (standard), 80 to 120 inches (Wide-Track)
• 	Spacing available in two-inch increments
• 	Solid, exacting settings and 100% true alignment

• 	Changes to track spacing made on-farm in a few hours -- no special tools required
• 	Exclusive Cat Wide-Track is the industry's most stable, maneuverable tractor

Cat Diesel Engine • Legendary power: Cat 3116 in Challenger 35, 45; 3126 in Challenger 55 • Mechanical unit injectors provide accurate fuel delivery, improved fuel efficiency and emissions • Two-piece articulated pistons are strong, long-life design • Air-to-air aftercooling (ATAAC) improves performance • Ample power reserves (up to 9%) deliver non-stop performance • Best-in-the-industry torque rise minimizes downshifting:

- 	Challenger 35, 68% torque rise
- 	Challenger 45, 57% torque rise
- 	Challenger 55, 46% torque rise
• 	Engine iso-mounted to tractor mainframe for simplified service

16x9 Powershift Transmission • Programmable electronic powershift • Standard features: sequential shift, shuttle shift, auto-shift, programmable downshift/upshift, speed matching • Speed range from 0 to 19.5 mph • Abundant gear meshes provide smooth power flow and performance • Oil-cooled disk-type brakes located inside final drives • Optional creeper gears allow for ultra slow-speed applications

Final Drives • Inboard planetary gears assure close monitoring of lubrication temperatures • Critical fluids (hydraulics, transmission oil and planetary gear oil) are constantly circulated through oil cooler for longer life

Patented Cat Differential Steering

Tractor • Pioneered and patented by Caterpillar • Hydraulic/mechanical design delivers smooth, reliable steering • Stronger and more durable than conventional electronic systems

• 	Turning under load exceeds wheel tractor ability, particularly at 120-inch setting
• 	Cat drive reduction system provides smooth, quiet operation
• 	Requires less operator effort to steer, improving comfort and decreasing fatigue

Responsive Hydraulics • Hydraulic capacity is 43 gpm at 2900 psi for plenty of reserve power • High-performance system features ample hydraulic flow (31.2 gpm flow) at couplers • Hydraulic flow levers give comforting feeling of control • In-cab flow controls allow convenient fine-tuning

Cab Cab • Excellent visibility all-around • Eight-way adjustable air-ride suspension seat for comfort • Iso-mounts absorb shock loads, smoothing ride for the operator and adding tractor life

• 	Patented rubber material in cab iso-mounts reduces shock loads and noise levels
• 	Movable control console allows adjustment for individual comfort
• 	Monitor control center located in front console within easy sight of the operator

Tractor Balance • Track tractors have different center of gravity than wheel tractors • Caterpillar knows this and allows for selective weight addition:

- 	Front suitcase - counterbalance drawbar loads
- 	Front idler - additional front counterbalance to offset 3-pt. hitch weight and drawbar loads

MODEL PTO power Drawbar power (firm ground) Challenger 35 175 hp (131 kW) 150 hp (112 kW) Challenger 45 200 hp (149 kW) 170 hp (127 kW) Challenger 55 225 hp (168 kW) 191 hp (142 kW)

Agricultural Tractors Specifications