Yanmar 4TNV98 / 4TNV98T engine for Hitachi ZX70 ZX75US ZX80 ZX85US mini excavator
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Netherlands, Dieren
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1. Application Compatibility
This engine series is the factory standard for the following Hitachi Zaxis (ZX) models:
Hitachi Zaxis Series: ZX70, ZX70-3, ZX70-5G
Hitachi Zaxis Series: ZX75US, ZX75US-3, ZX75US-5
Hitachi Zaxis Series: ZX80, ZX80LCK-3
Hitachi Zaxis Series: ZX85US, ZX85USB-3, ZX85USB-5
Other Brands: Also widely used in John Deere (75G, 85G) and Takeuchi (TB285, TB290).
2. Technical Specifications
Engine Models: * 4TNV98: Naturally Aspirated (Typical for ZX70/75)
4TNV98T: Turbocharged (Typical for ZX85)
Type: 4-Cylinder, 4-Cycle, Liquid-Cooled Diesel
Bore x Stroke: 98 mm x 110 mm
Displacement: 3.319 Liters
Rated Output: 40.0 - 54.0 kW (Approx. 54 - 73 HP @ 2100-2400 RPM)
Emission Class: Tier 3 and Tier 4 Final versions available.
Combustion System: Direct Injection (DI) or Common Rail (CR).
3. Key Engineering Advantages
Optimized for "US" Models: Engineered with a compact cooling and exhaust layout to fit inside the tight engine bays of the ZX75US and ZX85US without compromising heat dissipation.
High Breakout Force: The 4TNV98T provides high low-end torque, allowing the ZX85US to maintain high productivity during heavy trenching and lifting operations.
Fuel Efficiency: Features a high-precision fuel injection system that reduces fuel consumption and minimizes exhaust smoke, meeting strict urban environmental regulations.
Reliability & Service Life: Built with a heavy-duty cylinder block and high-strength alloy components, designed for long service intervals in demanding construction environments.
4. Supply Scope for Parts
Engine Assemblies: Brand new original Yanmar units, fully remanufactured (overhauled) engines, and tested used engines.
Overhaul Kits: Pistons, piston rings, cylinder liners, and main/connecting rod bearings.
Gasket Sets: Complete engine overhaul gasket kits, including the reinforced multi-layer steel (MLS) head gasket.
Fuel & Turbo System: Injection pumps, fuel injectors, water pumps, thermostats, and turbochargers (for T models).
Electrical: 12V Starters, alternators, and engine shut-off solenoids.
Service Support: 1-year quality warranty on new components and fast global shipping (DHL, UPS, FedEx).