The Caterpillar C0.5 is a 0.5 L (507 cc, 30.94 cu·in) natural aspirated two-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Caterpillar Inc. for a wide range of small, off road applications.
The Cat C0.5 engine has a two-cylinders, cast-iron cylinder block, overhead valve design, indirect injection fuel system, 12 volts electric starter motor, and 12 Volts (65 amp) alternator. This engine used a belt-driven coolant pump, coolant temperature switch. The lubrication system consists of a closed-circuit breather, spin-on lube oil filter, lube oil pressure switch, and lube oil sump.
The CAT C0.5 engine produced:
- For auxiliary power and other special applications: 10.3 PS (7.6 kW; 10.2 HP) at 2,800 rpm of maximum output power and 27.0 N·m (2.8 kg·m, 19.9 ft·lb) at 2,800 rpm of peak torque.
- U.S. EPA Tier 4 Final, EU Stage IIIA emission standards: From 11.2 PS (8.2 KW; 11 HP) at 2,800 rpm to 13.9 PS (10.2 KW; 13.7 HP) at 3,600 rpm of maximum horsepower.
General information
| Engine Specifications | |
| Engine model | Cat C0.5 |
| Engine type | 4-stroke, two-cylinders |
| Displacement | 507 cm3, (30.94 cu·in) |
| Max. horsepower |
For auxiliary power and other special applications: 10.3 PS (7.6 kW; 10.2 HP) at 2,800 rpm U.S. EPA Tier 4 Final, EU Stage IIIA emission standards: 11.2 PS (8.2 KW; 11 HP) at 2,800 rpm – 13.9 PS (10.2 KW; 13.7 HP) at 3,600 rpm |
| Max. torque |
For auxiliary power and other special applications: 27.0 N·m (2.8 kg·m, 19.9 ft·lb) at 2,800 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Pressure feed |
| Fuel system | Indirect injection |
| Starting system | Starter motor 12V |
| Charging system | Alternator 12V 65 amp |
| PTO shaft rotation | Counterclockwise (from flywheel end) |
| Dimensions (L x W X H) | 407 x 371 x 523 mm (16 x 14.6 x 20.6 in) |
| Dry weight | 57.0 kg (125.7 lbs) |
Cylinder Block and Head
It has a 67.0 mm (2.64 in) cylinder bore and 72.0 mm (2.83 in) piston stroke. Compression ratio rating is 23.5:1. The engine used cast iron engine block, cast iron exhaust manifold and inlet manifold with choice of inlets.
| Cylinder block | |
| Cylinder block alloy: | Cast-iron |
| Compression ratio: | 23.5:1 |
| Cylinder bore: | 67.0 mm (2.64 in) |
| Piston stroke: | 72.0 mm (2.83 in) |
| Crankshaft center distance: | 36 mm (1.415 in) |
| Cylinder head | |
| Cylinder head alloy: | Cast-iron |
| Valve arrangement: | OHV |
| Valves: | 2 per cylinder (4 valves in total) |
Service Data
The engine oil with a viscosity of SAE 10W-30 is recommended for the C0.5, refilling oil capacity is 1.6-2.0 L (1.70-2.12 US. qt).
| Oil system | |
| Lubrication system: | Pressure feed |
| Recommended oil: | SAE 10W-30 |
| Oil capacity: | 1.6-2.0 L (1.70-2.12 US. qt) |
| Cooling system | |
| Cooling system: | Liquid-cooled |
| Capacity: | 1.1 L (1.16 US. qt) |
| Fuel system | |
| Type: | Indirect injection |
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