The Shibaura H843 is a 1,396 cc (85.2 cu·in) straight-three, liquid-cooled, naturally aspirated diesel engine manufactured by Shibaura.
A 84.0 mm (3.31 in) cylinder bore and 84.0 mm (3.31 in) piston stroke give the H843 diesel engine a total of 1,396 cc (85.2 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 H843 diesel engine produced 26.4 PS (19.4 KW; 26.0 HP) at 2,700 rpm of net horsepower and 75.5 Nm (7.7 kg·m; 55.7 lbf·ft) at 1,500 rpm of peak torque.
The breakdown of the engine code is as follows:
- H – Engine series
- 84 – 84.0 mm of cylinder bore
- 3 – Three cylinders
General information
Engine Specifications | |
Engine code | H843 |
Layout | Straight-3, vertical diesel engine |
Fuel type | Diesel fuel No.2-D |
Production | – |
Displacement | 1.4 L, 1,396 cm3 (85.2 cu in) |
Max. Horsepower (net) | 26.4 PS (19.4 KW; 26.0 HP) at 2,700 rpm |
Torque output | 75.5 Nm (7.7 kg·m; 55.7 lbf·ft) at 1,500 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: | 84.0 mm (3.31 in) | |
Piston stroke: | 84.0 mm (3.31 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: | 45.0-50.0 Nm (4.6-5.1 kgf·m; 33.2-36.9 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) |
Crankshaft pulley: | 49.0-59.0 Nm (5-6 kgf·m; 36.2-43.5 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 ft·lb) 14 mm bolts: 129.0 Nm (13.2 kgf·m; 95.2 ft·lb) |
Maintenance data
Engine speed | |
Governed speed |
Low Idle: 750-850 rpm High Idle: 2,825-2,875 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 | 22.5-23.5° BTDC |
Oil system | |
Recommended engine oil | CD or CE |
SAE Viscosity Number | SAE 10W-30, 10W-40 |
Engine oil capacity | 5.3 liters (5.6 US.qts, 4.6 Imp. qts) |
Electrical system | |
Alternator: | 12V |
Volts: | 12V |
Ground polarity: | Negative |
Applications
The Shibaura H843 engine is used on the following tractors
Model | Years Produced |
Ford 1710 | 1983-1986 |
Shibaura SD2203 | – |
Shibaura SD2243 | – |
Shibaura SD2843 | – |
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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