| Applicable Manufacturer | Komatsu Za |
| Engine Model | 3TN84L-R2HVM |
| Equipment Type | Excavator |
| Engine Type | Vertical In-line 4-cycle Water-cooled Diesel Engine |
| Combustion Chamber | Direct Injection Engine Type |
| Air Intake System | Natural Aspiration |
| Bore | 3.3 in. |
| Stroke | 3.4 in. |
| Displacement | 87.2 cu in. |
| Rated Speed | 2500 RPM |
| Specific Fuel Consumption | <= 245 ( 180) |
| Compression Ratio | 18.0 (effective 16.15) |
| Fuel Injection Timing | Fic(air 14+1/-1 |
| Fuel Injection Pressure | 21.6 +0.98/ 0 ( 220 +10/ 0) |
| Rotation Direction | Viewed From Flywheel Side Left |
| Governor | Centrifugal All Speed Engine Type |
| Cooling System | Radiator Cooling |
| Lubricating System | Forcible Lubrication By Trochoid Pump |
| Starter | Electric Startin(starting Motor 12vdc-1.8kw) |
| Charger | Flywheel Magnet Engine Type (dc12v -20a) |
| Oil Capacity | 1.9 gal. 0.9 gal. |
| Coolant Capacity | 0.5 gal. |
| Flywheel | 155ID mark T57 |
| Fuel Filter | Water Separator None |
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