1300 02 064 Piston & Liner Shim 0.25 mm compatible with TD120

What does a piston and liner shim do?

This piston and liner shim is a critical component used to adjust liner protrusion within heavy-duty diesel engines to the exact required range. By providing a precise thickness, it ensures that the head gasket receives a balanced clamping load, which is vital for preventing gas leaks and avoiding premature gasket failure under high pressure.

Engine fitment and specifications

This specific shim is engineered for use in TD120 engine applications. It features an outside diameter of 157.10 mm and an inside diameter of 151.10 mm, with a precise thickness of 0.25 mm to meet stringent engine building requirements.

Installation and maintenance guidance

For successful installation, technicians must ensure all surfaces are thoroughly cleaned of residue or corrosion before fitting the shim to prevent inaccurate protrusion readings. It is recommended to use a single shim of the correct grade rather than stacking multiple layers to maintain structural integrity under high cylinder pressure.

Technical advice for assembly

When performing engine overhauls, always verify the protrusion measurements for each cylinder individually, as block wear can vary across the engine block.