The Caterpillar 904H is a compact wheel loader featuring a turbocharged Mitsubishi S4Q2-T 4-cylinder engine delivering 52 hp (39 kW) at 2400 rpm. It has an operating weight of approximately 9,900 lbs (4,490 kg) and a rated bucket capacity of 0.8 cubic yards (0.6 m³) with a bucket width of 5.9 ft (2 m). The loader incorporates a Z-bar linkage providing a breakout force of 8,003 lbs (3,630 kg), a max hinge pin height of 10.3 ft (3 m), and a dump clearance of 7.9 ft (2 m). Its hydrostatic transmission offers two forward and two reverse gears, with a maximum travel speed of 12.5 mph (19 kph) enabling smooth acceleration and precise inching control. The hydraulic system has a pump flow capacity of 22 gal/min (83 l/min) and operates at 3,000 psi relief pressure, with dump time at 0.8 seconds and lift time at 4.5 seconds. The robust chassis provides 0.9 ft (0.3 m) ground clearance, a wheelbase of 6.3 ft (1.9 m), and a width over tires of 5.4 ft (1.65 m). Safety features include FOPS and ROPS-certified cab meeting SAE and ISO standards. Fuel capacity is 22 gallons (83 liters) with hydraulic fluid capacity of 11.4 gallons (42 liters). The 904H supports versatility with a universal coupler compatible with skid-steer loader tools, enhancing operational efficiency across diverse applications. Overall, the 904H balances powerful performance, operator comfort, and compact maneuverability for tasks requiring agility and strength.