When a Komatsu PC58UU-3 needs an engine, the part that trips buyers up is not finding a 3D88 - it is knowing whether the machine takes the three-cylinder or the four-cylinder, and mechanical or electronic. We carry the range, and we check the plate before anything ships.
The Komatsu PC58UU-3 is a 5.8-ton class ultra-short tail-swing mini excavator, built for the tightest urban and confined-space work. CYLINDER COUNT WARNING: machines in this class span both the three-cylinder 3D88E and the four-cylinder 4D88E. The data plate is the only reliable source.
ENGINE SPECIFICATION. Three cylinder, four cycle, water 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 full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D88E / 4D88E. Production years: 2000-2010. Rated output in this machine: approximately approx. 36-40 hp.
KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE.
Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder.
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