Cylinder liner for Scania TD40A

The cylinder liner with part number 099LD00100000 serves as a replaceable internal sleeve for the Scania TD40A engine block. It creates the cylinder bore where the piston travels during operation. By acting as the primary contact surface for the piston rings, this component manages the heat transfer from the combustion chamber to the engine cooling system while maintaining the necessary seal for compression.

This part is specifically engineered for the Scania TD40A engine assembly. It is designed to fit directly into the engine block to restore the internal dimensions of the cylinder. Proper installation of this liner ensures that the piston and rings maintain correct clearance, which is necessary for the engine to function within its design parameters.

In heavy machinery engines, cylinder liners protect the engine block from the direct mechanical wear of the reciprocating piston. They provide a controlled surface finish that facilitates lubrication and prevents gas leakage from the combustion chamber. When worn, these liners are replaced to restore engine compression and reduce oil consumption.