Case 550 Crawler Dozer Repair Manual

The Case 550 crawler dozer, produced during the mid-1990s, is part of the G-Series lineup built for reliability, maneuverability, and strength in construction, utility, and agricultural applications. Compact yet powerful, the 550 combines a robust engine, balanced undercarriage, and efficient hydraulic system for consistent all-day performance.

General
With an operating weight between 13,600 and 14,000 lb, the Case 550 provides stability and traction while remaining compact enough for confined work areas. Its open ROPS operator station ensures ease of operation with clear visibility, while service access is designed for simplified maintenance.

Engine
The Case 550 is powered by a 3.9 L, 4-cylinder Case diesel engine producing 75 gross horsepower (67 net). This powerplant delivers steady torque output and dependable performance under load, making it suitable for grading, pushing, and earthmoving operations.

Electrical
The 12-volt electrical system, supported by a 65-amp alternator, provides reliable starting and sufficient power for lights and auxiliary components. Simplicity of design ensures serviceability in the field.

Track
The undercarriage is equipped with 16-inch wide tracks, providing excellent traction and flotation. The durable track system is engineered for stability, supporting both rough grading and fine finish operations with confidence.

Power Train
A torque converter drive with a 4-speed transmission gives the operator flexible control for a variety of jobsite tasks. This system ensures smooth power transfer and efficient operation across different ground conditions.

Brakes
The 550 incorporates heavy-duty braking components for reliable stopping power, designed to withstand demanding dozing and grading applications while ensuring operator safety.

Hydraulics
An open-center hydraulic system provides up to 18.6 GPM at 2,500 psi, enabling smooth blade operation and mounted equipment control. With a hydraulic reservoir capacity of approximately 10.3 gallons, the system ensures dependable performance with efficient cooling and circulation.

Mounted Equipment
The Case 550 is commonly fitted with a straight or six-way power-angle-tilt blade, offering versatility for grading, cutting, and backfilling. Blade performance is enhanced by responsive hydraulics and the dozer’s stable undercarriage design.

Key Highlights

• Production: 1995 – 1998 (Case G-Series)
• Engine: Case 3.9 L 4-cyl diesel, 75 HP gross / 67 HP net
• Operating weight: 13,600 – 14,000 lb
• Transmission: 4-speed torque converter drive
• Fuel capacity ~30.5 gallons, hydraulic capacity ~10.3 gallons
• Hydraulic system: 18.6 GPM open-center at 2,500 psi
• Tracks: 16-inch width for stability and traction
• 12 V electrical system with 65 A alternator
• Mounted blades: straight or six-way PAT blade options