The IHI IS45J left the factory with the 3TNV84. Where that engine is no longer available, the Yanmar 3TNV88 is the established replacement - same engine family, same mounting layout, a little more displacement. We stock it in mechanical injection and in electronic common rail, new surplus and rebuilt.
The IHI IS45J is a 4.5-ton class compact excavator used in US utility and landscaping work, powered by the Yanmar 84 mm-bore 3-cylinder direct-injection diesel.
ENGINE SPECIFICATION. Three cylinder, four cycle, liquid cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at 3000 rpm at full speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Rotation counterclockwise viewed from the flywheel end. Engine as fitted to this machine: Yanmar 3TNV84. Production years: 2000-2010. Rated output in this machine: approximately approx. 33 hp.
WHAT WE FIT TO YOUR MACHINE.
On a mini excavator the core engine is only half the job. The bellhousing and flywheel have to mate to your hydraulic pump drive, the oil pan has to clear the undercarriage, and the throttle has to answer to the machine's engine control. Those are all external parts and they carry across from the engine you are pulling out - we build the core to suit.
WHY THE 3TNV88 REPLACES THE 3TNV84.
Yanmar's TNV three-cylinder engines are one family on one architecture - same 90 mm stroke, same block design