Caterpillar C0.5

Caterpillar C0.5 engineThe 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 modelCat C0.5
Engine type4-stroke, two-cylinders
Displacement507 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 systemLiquid-cooled
Lubricating systemPressure feed
Fuel systemIndirect injection
Starting systemStarter motor 12V
Charging systemAlternator 12V 65 amp
PTO shaft rotationCounterclockwise (from flywheel end)
Dimensions (L x W X H)407 x 371 x 523 mm (16 x 14.6 x 20.6 in)
Dry weight57.0 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

References

1. CAT C0.5 industrial engine technical datasheet. Caterpillar. 2014.

Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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