When a Sumitomo SH40UJ3 needs an engine, the part that trips buyers up is not finding a 3TNV88 - it is knowing whether the machine takes the mechanical version or the common rail one. We carry both, new surplus and rebuilt, and we will tell you which yours runs before you order.
The Sumitomo SH40UJ3 is a 4-ton class compact excavator, powered by the Yanmar 88 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: 3TNV88. Production years: 2005-2015. Rated output in this machine: approximately approx. 36 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.
MECHANICAL OR COMMON RAIL - THIS IS THE ONE THING YOU MUST MATCH.
The Yanmar 3TNV88 comes in two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor, with no