Volvo Penta — Cylinder liners and pistons, inspecting
Testing & diagnosis
From a Volvo Penta service manual — check it applies to your exact model before use.
Browse Volvo Penta generators & specs →
Before you start
- Cylinder liners and pistons are classed together; do not mix pistons and liners.
Procedure
- Clean cylinder liners and pistons thoroughly.
- Measure cylinder liner wear with cylinder indicator.
- Measure liner from top and bottom and several places vertically.
- At each spot, measure along and across engine.
- If wear greater than 0.45-0.50 mm, use new complete liner kit.
- Check pistons for deep scratches, damaged ring stops, worn ring grooves, damaged snap ring grooves.
- Replace pistons if any damage found.
Specs & values
- Cylinder liner wear limit 0.45-0.50 mm
Source: Volvo Penta 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.