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Case 1840 Skid Steer Loader Detailed Overview
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The Case 1840 skid steer loader is a robust and versatile machine designed for a broad range of construction, landscaping, and agricultural tasks. It combines dependable diesel power, advanced hydrostatic drive systems, and a compact design to offer high maneuverability and productivity in tight jobsite conditions.
Engine and Powertrain
  • Engine Model: Case 4-390, a 4-cylinder diesel engine with a displacement of 239 cubic inches (3.92 liters).
  • Power Output: Gross horsepower of approximately 54 hp (40 kW) at 2000 rpm, with a net rating around 51 hp (38 kW).
  • Torque: Peak torque is about 179 lb-ft (243 Nm) at 1200 rpm, providing strong pulling power and load-handling capability.
  • Fuel System: Direct fuel injection helps optimize combustion efficiency and fuel economy.
  • Cooling System: Oil-cooled diesel engine with a deep oil sump ensures lubrication on slopes and prolonged engine life.
Hydraulic and Drive System
  • Drive Pump: Tandem axial piston pumps powering bi-directional hydrostatic transmission.
  • Drive Motors: Fixed displacement gerotor motors with high torque and low speed characteristics.
  • Final Drive: Single-stage reduction through chain drive to wheels; uses No. 80 HT chain.
  • Travel Speed: Infinitely variable from 0 to about 6.2 mph (0–10 km/h).
  • Brakes: Mechanical parking latch with spring-applied cable release engaged via raising the seat bar.
  • Controls: Low-effort servo assist hand controls providing responsive, non-fatiguing operation.
  • Steering enables spot turns within the machine’s own length for exceptional tight-space maneuvering.
Loader Performance
  • Tipping Capacity: Around 2,700 lbs (1,225 kg) per SAE standards.
  • Lift Capacity at Maximum Height: Approximately 2,630 lbs (1,193 kg).
  • Operating Load Rating: About 1,350 lbs (612 kg).
  • Breakout Force: Tilt cylinders generate roughly 3,066 lbf (13,638 N), while lift cylinders provide about 2,773 lbf (12,335 N).
  • Cycle Times with Rated Load: Raising time of approximately 4.7 seconds; lowering time roughly 2.6 seconds; rollback time about 1.5 seconds.
  • Bucket Capacity: Around 0.3 cubic yards (roughly 0.22 cubic meters).
  • Loader Arm Design: Offset style increases operator space and improves visibility.
Dimensions and Weight
  • Length with Bucket on Ground: About 125 inches (3175 mm).
  • Width Over Tires: Near 57.5 inches (1461 mm).
  • Height to Top of Cab: Roughly 78 inches (1981 mm).
  • Ground Clearance: Approximately 6.7 inches (170 mm).
  • Wheelbase: Around 37 inches (940 mm).
  • Operating Weight: Approximately 5,250 pounds (2,380 kg).
Operator Comfort and Safety
  • Spacious cab with excellent all-around visibility.
  • Adjustable, comfortable seats and low-effort controls reduce operator fatigue.
  • Grab rails, steps, and obstruction-free operator paths improve ingress and egress safety.
  • Hydraulic lockout and mechanical parking brake provide safety during operation and transport.
Maintenance and Durability
  • Chain final drives with external tension adjustment prolong drive component life.
  • Oil-cooled engine design enhances durability and protects against heat-related wear.
  • Heavy-duty loader arms and frame designed to absorb shocks and stresses evenly.
  • Dual bucket cylinders and extendable loader support reduce stress on bucket corners.
  • Easy access to service points simplifies routine maintenance.
Technical Terms Explained
  • Hydrostatic Transmission: A system using hydraulic fluid to transfer power smoothly to wheels, allowing infinite speed adjustments.
  • Gerotor Motor: A type of hydraulic motor used for compact, high-torque applications.
  • Breakout Force: The force exerted by the loader bucket to pry or lift materials.
  • Tilt Cylinder: Hydraulic cylinder controlling bucket tilt.
  • Offset Loader Arms: Design moving loader arms off the frame centerline to enhance visibility and operator space.
  • Tipping Capacity: Maximum safe load before the machine risks tipping.
  • Cycle Time: Time taken for loader operations like raising, lowering, or tilting the bucket.
A User Perspective
A contractor utilizing the Case 1840 shared that the machine’s excellent maneuverability and responsive hydraulic system make it ideal for tight urban work sites and landscaping. The machine balances power and size, efficiently handling soil moving, debris clearing, and material handling. Routine maintenance of chains and hydraulic systems ensured long-term reliability without frequent breakdowns.
Summary
The Case 1840 skid steer loader blends reliable power, precise control, and durable construction, making it a trusted workhorse in compact loader applications. Its advanced hydrostatic drive system and comfortable operator environment fit a wide range of jobs requiring agility and strength. Understanding its technical specifications and performance characteristics helps operators and owners maximize productivity and equipment longevity on demanding sites.
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