1. Check whether the purchased Copeland Discus type Piston model matches the machine model.
2. After the product is unpacked, check the appearance of the Copeland Discus type Piston and confirm that there is no quality problem, no accidental damage, no mixed or fake products before use.

3. Clean the Copeland Discus type Piston, test and compare it for trial installation. 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 when installing dry and wet cylinder liners, and install with toner. Clean the base hole of the machine body, and keep the accuracy of the base hole without deformation and burrs. If the matching clearance 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.

5. When installing Copeland Discus type Piston, special tools must be used to smoothly press and install, and no hard knock or rough installation is allowed to avoid deformation of Copeland Discus type Piston and damage to related parts.

6. The protrusion of the Copeland Discus type Piston and the plane of the body shall not exceed the specified value, and the excessively protruding cylinder liner is easy to be crushed by the cylinder head. If the plane of the Copeland Discus type Piston and the body is too low, it is easy to cause the cylinder head gasket to leak.

7. The deformed body should be repaired or replaced, and the deformed connecting rod or damaged connecting rod bushing should be replaced.

8. Copeland Discus type Piston distinguishes the front and rear ends. The Copeland Discus type Piston ring cannot be reversed, and the upper and lower rings are distinguished. Generally, the piston ring is installed with the marked side facing the top of the piston. The compression clearance of Copeland Discus type Piston and cylinder head should be within the technical requirements of the model.