Power Solutions International — Crankshaft system assembly

Repair & overhaul

From a Power Solutions International service manual — check it applies to your exact model before use.

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Procedure

1. Clean up cylinder bottom holes.
2. Press main bearing upper shell into cylinder bottom holes.
3. Apply clean lubricating oil on inner surface of upper bearing shell.
4. Apply sealant on undersurface of cylinder block.
5. Drop the crankshaft into cylinder body slowly.
6. Press upper thrust plate into cylinder body with oil groove facing crankshaft.
7. Place lower bearing shell and lower thrust plate into crankcase.
8. Apply clean lubricating oil on crankcase bolt bearing surface and main bearing bolt thread.
9. Pre-tighten main bearing bolts to 70 N·m, then tighten each bolt another 90°±4°.

Source: Power Solutions International service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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