PIN 4478238 - Caterpillar

Illustration 1 g01889693
Example of surface pitting in the chrome finish of a hydraulic cylinder rodSurface pitting in the chrome finish of a cylinder rod can be attributed to corrosion that is caused by improper preparation of the cylinder rod for long term storage. Refer to Illustration 1.
Illustration 2 g01889675
Example of naturally occurring cracks in the chrome surface
Illustration 3 g01889618
An example of the chrome surface of a cylinder rod after corrosion has attacked the base material.When the chrome's surface is viewed with magnification, naturally occurring cracks are visible. If the cracks are not sealed properly, the cracks will allow a path for corrosion to attack the base metal of the cylinder rod. Refer to Illustration 2 and Illustration 3.