Bitzer 4VC Piston Manufacturers china introduces the maintenance instructions for cylinder liner and piston components:
1. Check whether the purchased assembly model matches the engine model.
2. After the product is unpacked, check the appearance of the assembly (cylinder liner, piston, piston ring, piston pin, etc.), and confirm that there is no quality problem, no accidental damage, no mixed packaging or fake and inferior products before use.

3. Clean the assembly, test and compare it for trial assembly (wet and dry cylinder liners are not suitable for trial assembly with the body, and measure with measuring tools if possible). Piston and cylinder liner, piston ring and cylinder liner and piston, piston pin and piston and connecting rod, cylinder liner and body.
4. It is strictly forbidden to apply oil to the installation of dry and wet cylinder liners, and use toner to smear and install. Clean the seat hole of the machine body to maintain the accuracy of the seat hole without deformation and burrs. If the matching gap between the cylinder liner and the body (generally not less than 0.015 mm) is too small, it is recommended to install the cylinder liner with cold shrinkage.
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