ME082505 Crankshaft for Mitsubishi 6D31 6D31T Engine

ME082505 Crankshaft for Mitsubishi 6D31 / 6D31T Engine

This ME082505 crankshaft is supplied for Mitsubishi 6D31 / 6D31T diesel engine repair and overhaul applications. The current page reference links this crankshaft with Kobelco SK120-6 excavator use, and it should be confirmed by the original part number, engine model and dimensional comparison before ordering.

A crankshaft is one of the core rotating components inside a diesel engine. It converts piston and connecting rod movement into rotational power and works together with main bearings, connecting rod bearings, thrust bearings, flywheel, timing gear and lubrication system components.

Before Ordering: What Must Be Checked

Engine model: Confirm whether the engine is Mitsubishi 6D31 or 6D31T.

Original part number: Compare the old crankshaft marking, parts book reference or supplier label with ME082505.

Main journal and rod journal size: Measure journal diameter and check whether the crankshaft is standard size or has been reground.

Gear end and flywheel end: Check the gear mounting side, keyway, bolt pattern and flywheel-side structure.

Related parts: Main bearings, connecting rod bearings, thrust bearings and oil pump condition should be checked during crankshaft replacement.

Common Reasons for Crankshaft Replacement

Bearing damage: Main bearing or connecting rod bearing failure can scratch or overheat the crankshaft journals.

Low oil pressure: Poor lubrication may damage journals, bearings and other rotating parts.

Abnormal engine noise: Knocking or heavy metallic noise may indicate bearing or crankshaft wear.

Overhaul inspection: Crankshaft condition should be checked when rebuilding a 6D31 / 6D31T engine.

Visible cracking or scoring: Cracks, deep scratches, heat marks or journal deformation require careful inspection before reuse.

Installation and Maintenance Notes

Clean the engine block, oil passages and bearing seats before installation.

Use the machine-specific service manual for torque values, bearing clearance and assembly sequence.

Check main bearings, connecting rod bearings and thrust bearings before final assembly.

Inspect the engine oil pump, oil pickup tube and oil filter if the old crankshaft failed because of lubrication problems.

After installation, confirm oil pressure and abnormal noise during initial start-up before returning the machine to heavy work.

Ordering Information

For a fast confirmation, please send the engine model, machine model, original part number, crankshaft photos, journal measurements, gear-end photo and flywheel-end photo. This helps confirm whether ME082505 matches your Mitsubishi 6D31 / 6D31T engine application.

FAQ

What is ME082505 used for?

ME082505 is listed on this page as a crankshaft reference for Mitsubishi 6D31 / 6D31T engine applications. Final fitment should be verified by the original part number and engine configuration.

Can this crankshaft be confirmed by machine model only?

No. Crankshafts should be confirmed by engine model, original part number, journal size, gear end, flywheel end and machine serial number.

Should bearings be checked when replacing a crankshaft?

Yes. Main bearings, connecting rod bearings and thrust bearings should be checked during crankshaft replacement. Bearing or lubrication failure can damage a new crankshaft quickly.

What photos should I send for confirmation?

Please send photos of the old crankshaft, visible part marking, main journals, rod journals, gear end, flywheel end and engine model plate.