Komatsu 230(S/N 23000014-Up)

On the 230 (S/N 23000014-Up), the engine make is not documented for this exact serial range, so oil sampling is the fastest way to identify what is actually installed and to catch bearing or coolant intrusion issues early. Pull hydraulic fluid samples at every major service to watch for water contamination and wear metal from the main pump and swing motor. Because no factory fluid-capacity data survives for this build, log actual drain quantities the first time you service it and use that reading as your own baseline going forward.

Expect wear patterns typical of this FAI-era mini excavator generation: pivot pin and bushing wear at the boom-to-arm and arm-to-bucket joints from grease intervals stretched past factory recommendation, hydraulic hose failures at the boom base where routing flexes hardest, and swing bearing play on machines that saw heavy slew duty. Because the 230 shares undercarriage and pivot hardware with its 212, 222, 232, 235, and 240 FAI-built siblings, cross-shopping parts across that family is often the fastest route to a repair when no dedicated 230 listing exists.

A full rebuild starts with the undercarriage: track links, rollers, and sprockets on a machine this age are almost always past service limits and drive the bulk of rebuild cost. Cylinder reseal work on the boom, arm, and bucket rams comes next, followed by a main pump inspection if slew speed or digging force has fallen off. Because the 230's exact engine identity is unconfirmed for this serial range, budget for a positive-identification inspection of the block before ordering any major engine components.

This FAI-built generation was designed for general earthmoving duty rather than extreme climates, so cold-weather starting depends heavily on battery condition and how well whatever engine is actually fitted responds to its existing glow-plug or preheat system. Before winter storage, drain the fuel water separator, coat exposed cylinder rods lightly with oil, and grease every pivot to displace moisture. In wet or muddy conditions, check track tension more often, since undercarriages from this era were not built to today's sealed-and-lubricated track chain standard.