For the Kobelco SK40SR, the 3TNE84 it was built with and the 3TNV88 we sell are the same engine family - only the bore changes. That is why the 88 is the standard replacement. We stock it in mechanical injection and electronic common rail, new surplus and rebuilt.
The Kobelco SK40SR is a 4-ton class short-radius mini excavator built for tight-access work, using 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 3TNE84 / 3TNV84. Production years: 1998-2006. 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 3TNE84.
Yanmar's TNV three-cylinder engines are one family on one architecture - same 90 mm stroke, same block design, same mounting and accessory lay