The Shibaura K773 is a 1,117 cc (68.2 cu·in) straight-three, liquid-cooled, naturally aspirated diesel engine manufactured by Shibaura.
A 77.0 mm (3.03 in) cylinder bore and 80.0 mm (3.15 in) piston stroke give the Shibaura K773 diesel engine a total of 1,117 cc (68.2 cu·in) of displacement. The compression ratio rating is 23.0:1.
This engine is equipped with glow plugs and oil bath type air cleaner.
The Shibaura K773 diesel engine produced 22.3 PS (16.4 KW; 22.0 HP) at 2,800 rpm of net horsepower and 58.3 Nm (5.9 kg·m; 43.0 lbf·ft) at 1,600 rpm of peak torque.
The breakdown of the engine code is as follows:
- K – Engine series
- 77 – 77.0 mm of cylinder bore
- 3 – Three cylinders
General information
| Engine Specifications | |
| Engine code | K773 |
| Layout | Straight-3, vertical diesel engine |
| Fuel type | Diesel fuel No.2-D |
| Production | – |
| Displacement | 1.1 L, 1,117 cm3 (68.2 cu in) |
| Max. Horsepower (net) | 22.3 PS (16.4 KW; 22.0 HP) at 2,800 rpm |
| Torque output | 58.3 Nm (5.9 kg·m; 43.0 lbf·ft) at 1,600 rpm |
| Injection type | Indirect injection |
| Cooling system | Liquid-cooled |
| Fuel system | Fuel injection pump |
| Starting system | Electric starting |
| Starting support device | Glow plug in combustion chamber |
| Power adder | None |
| Firing order | 1-2-3 |
Cylinder block
| Cylinder block | ||
| Compression ratio: | 23.0:1 | |
| Cylinder bore: | 77.0 mm (3.03 in) | |
| Piston stroke: | 80.0 mm (3.15 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
Cylinder head
| Cylinder head | ||
| Valve Arrangement: | – | |
| Valves: | 6 (2 valves per cylinder) | |
| Valve seat angle: | INTAKE | 45° |
| EXHAUST | 45° | |
| Valve face angle: | INTAKE | 45° |
| EXHAUST | 45° | |
Tightening torque
| Tightening torque specs | |
| Connecting rod caps: | 25.0-27.0 Nm (2.6-2.8 kgf·m; 18.5-19.9 ft·lb) |
| Main bearing holders: | 48.0-53.0 Nm (4.9-5.4 kgf·m; 35.4-39.1 ft·lb) |
| Crankshaft rear plate: | 46.0-54.0 Nm (4.7-5.5 kgf·m; 33.9-39.9 ft·lb) |
| Flywheel: | 56.0-69.0 Nm (5.7-7.0 kgf·m; 41.3-50.9 ft·lb) |
| Cylinder head: |
10 mm bolts: 61.0 Nm (6.2 kgf·m; 45.0 ft·lb) 12 mm bolts: 95.0 Nm (9.7 kgf·m; 70.1 ft·lb) |
Maintenance data
| Engine speed | |
| Governed speed |
Low Idle: 750-850 rpm High Idle: 3,000-3,050 rpm |
| Valve clearance | |
| Intake valve | 0.20 mm (0.008 in) |
| Exhaust valve | 0.20 mm (0.008 in) |
| Injector opening pressure | |
| Standard | 11,760 kPa (1705 psi) |
| Injection timing | |
| Standard | 22° BTDC |
| Oil system | |
| Recommended engine oil | CD or CE |
| SAE Viscosity Number | SAE 10W-30, 10W-40 |
| Engine oil capacity | 4.0 liters (4.23 US.qts, 3.52 Imp. qts) |
| Electrical system | |
| Alternator: | 12V |
| Volts: | 12V |
| Ground polarity: | Negative |
Applications
The Shibaura K773 engine is used on the following tractors
| Model | Years Produced |
| Ford 1510 | 1983-1986 |
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