Yanmar 4TNV94 4TNV94L engine for Yanmar VIO70-2 VIO75-A excavator
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1. Application Compatibility
This engine series is the primary power plant for mid-sized compact excavators:
Yanmar ViO Series: ViO70-2, ViO75, ViO75-A, ViO75-C
Other Brands: Widely used in Hyundai (R80-7), Mustang, Gehl skid steers, and various industrial power units.
Equipment Type: Excavators, forklifts, generators, and large wood chippers.
2. Technical Specifications
Engine Model: Yanmar 4TNV94 / 4TNV94L (L designates "Long Stroke" variant)
Type: 4-Cylinder, 4-Cycle, Liquid-Cooled Diesel
Aspiration: Naturally Aspirated (Standard)
Bore x Stroke: 94 mm x 110 mm (Standard) / 94 mm x 120 mm (L-series)
Displacement: 3.054 Liters to 3.319 Liters
Rated Output: 34.0 - 40.0 kW (Approx. 46 - 54 HP @ 2200-2500 RPM)
Combustion System: Direct Injection (DI)
Emission Class: EPA Tier 3 / Tier 4 Interim (depending on production year)
3. Key Engineering Advantages
High Tractive Effort: The 4TNV94 is tuned for the ViO75, providing the low-end torque required for heavy grading and high travel speeds across rough terrain.
Optimized Fuel Injection: The direct injection system utilizes a high-efficiency fuel pump to ensure complete combustion, which reduces smoke and lowers daily operating costs.
Quiet & Smooth: Yanmar’s TNV block design features improved rigidity and noise-dampening covers, reducing the "diesel clatter" often associated with larger four-cylinder engines.
Thermal Management: Features an oversized water pump and optimized oil cooling passages to prevent overheating during continuous heavy digging in high-temperature environments.
4. Supply Scope for Parts
Engine Assemblies: Brand new original engines, fully remanufactured (overhauled) units, and inspected used engines.
Overhaul Kits: Pistons, piston rings, cylinder liners (finished or semi-finished), and main/connecting rod bearings.
Gasket Sets: Complete engine gasket kits, including the premium cylinder head gasket.
Fuel & Cooling: Injection pumps, fuel injectors, lift pumps, water pumps, and thermostats.
Electrical: 12V Starters, alternators, and engine stop solenoids.
Service Support: 1-year quality warranty on new components and fast global express shipping (DHL, UPS, FedEx).