2400 02 008 Liner Shim 0.50 mm for Engines

What does a piston and liner shim do?

This piston and liner shim is a critical component used to achieve the precise liner protrusion required in heavy-duty diesel engines. By sitting between the cylinder liner and the engine block seating surface, it compensates for manufacturing tolerances or block wear, ensuring the head gasket receives the correct clamping load to prevent gas leaks.

Technical specifications and fitment

This specific component features an outside diameter of 119.40 mm and an inside diameter of 112.15 mm, with a thickness of 0.50 mm. It is engineered from high-strength components designed to maintain dimensional stability under extreme thermal and chemical stress within the engine environment.

Installation and maintenance guidance

For successful installation, technicians must ensure all seating surfaces are thoroughly cleaned of residue or corrosion to prevent false protrusion readings. It is vital to use a single shim of the correct grade rather than stacking multiple thin shims, as this ensures a stable and accurate fitment.

Troubleshooting and precision fitting

Regular inspection of the liner seating during engine overhauls is recommended to determine if a shim replacement is necessary. Maintaining exact protrusion levels is essential for the long-term integrity of the cylinder assembly and head gasket performance.