Main Engine 4-Stroke · Main Engines (4-Stroke)
The Daihatsu DK-36 is a medium‑speed, four‑stroke L‑configuration diesel engine featuring common‑rail fuel injection and dual‑fuel capability (HFO/MGO) for main propulsion or auxiliary power.
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| Lube oil sample analysis | typically every 500-1,000 running hours |
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| Fuel injector inspection/overhaul | commonly in the 8,000-12,000 running hour range depending on fuel quality - confirm against Daihatsu's own maintenance schedule for the DK-36 |
| Turbocharger overhaul | typically every 12,000-24,000 running hours |
| Top overhaul (piston/liner/valve inspection) | commonly in the 12,000-16,000 running hour range for this engine class |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Cylinder liner bore wear | typically renewed in the region of 0.3-0.5 mm diametral wear for this bore class, but confirm the exact figure against Daihatsu's maintenance manual for the DK-36 rather than treating this as fixed |
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| Piston ring gap | typically on the order of 1.0-2.0 mm at running clearance for a bore of this size - confirm against the manufacturer's manual |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Falls under Continuous Survey Machinery for diesel engines; class typically reviews crankshaft deflection readings, running hours and overhaul history since the last major inspection, and oil mist detector test records at survey.
Estimated lifetime: Medium-speed engines of this class are commonly designed for a major overhaul cycle in the order of 60,000-100,000 running hours to piston/liner/crankshaft before significant machining or part renewal is required, with overall service life extending well beyond that under a proper maintenance regime - this is an order-of-magnitude figure, not a manufacturer commitment.
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