Case MC1150E Crawler Dozer Repair Manual

The Case MC1150E crawler dozer is a reinforced military/contract variant of the proven 1150E series, designed for heavy-duty earthmoving, grading, and site-preparation work in demanding environments. Equipped with a robust turbocharged six-cylinder diesel engine, full power-shift transmission, and reinforced frame, the MC1150E delivers dependable performance under both civilian and military applications. Its rugged design, operator protection options, and versatile attachments made it a reliable choice for construction and defense projects during its production era.

1 – General
With an operating weight of approximately 27,000 lb, the MC1150E was heavier than its civilian counterpart due to military reinforcements and protective structures. Its balanced crawler design provides stability, traction, and adaptability for varied terrains.

2 – Engine
The dozer is powered by the Case 6T-590 six-cylinder turbocharged diesel engine, with a displacement of 359 cu in (5.9 L). Delivering around 125 gross horsepower (115 net) at 2100 rpm, the engine provides reliable torque and performance for sustained dozing operations.

3 – Fuel System
The machine features a 52-gallon diesel fuel tank, enabling extended operation between refueling cycles. Its efficient delivery system ensures consistent power under continuous load.

4 – Electrical System
The MC1150E uses a 24-volt electrical system powered by dual 12-volt batteries and an alternator. This heavy-duty setup ensures reliable cold starts and supports military field operations with auxiliary power demands.

5 – Track
The undercarriage includes reinforced tracks with approximately 100 inches of ground contact, seven bottom rollers, and two carrier rollers. Track shoes range between 20 and 24 inches wide, balancing traction with flotation for diverse soil conditions.

6 – Power Train
A four-speed full power-shift transmission provides four forward and four reverse speeds. With smooth gear shifting under load, the MC1150E reaches forward speeds of up to 6 mph and reverse speeds up to 7 mph, optimizing productivity.

7 – Brakes
Hydraulic wet-disc brakes deliver dependable stopping power, while an integrated parking brake enhances safety during idle or transport.

8 – Hydraulics
The open-center hydraulic system features a reservoir capacity of 15 gallons, supporting responsive blade control and auxiliary equipment. Designed for durability, it delivers steady performance in extended duty cycles.

9 – Mounted Equipment
The MC1150E is fitted with a straight or PAT blade offering around 3.4 cubic yards of heaped capacity. Military configurations included optional rippers or winches, broadening its versatility for field engineering, land clearing, and combat support roles.

Key Highlights

• Production: 1980s (E-Series platform, military variant)
• Engine: Case 6T-590, 6-cyl turbo diesel, 359 cu in, 125 gross HP / 115 net HP
• Operating weight: ~27,000 lb (reinforced military build)
• Fuel capacity: 52 gallons; Hydraulic capacity: 15 gallons
• Transmission: 4-speed full power-shift, 4F / 4R; speeds ~6 mph forward, ~7 mph reverse
• Tracks: 7 bottom rollers, 2 carrier rollers, 20–24 in shoes, ~100 in ground contact
• Blade: Straight or PAT, ~3.4 yd³ heaped capacity
• Electrical: 24-volt system with dual 12V batteries and alternator
• ROPS canopy or military cab with optional HVAC
• Optional rippers and winches for expanded utility