Hydraulic systems are the powerhouse of every heavy machine — from loaders and excavators to compact tractors. They lift, dig, steer, and drive by transferring force through a vital medium: hydraulic fluid. When this fluid drops below the proper level or becomes contaminated, the entire system suffers. In this article, we’ll explain why hydraulic maintenance is crucial, how to check the hydraulic fluid on your John Deere tractor (including a detailed example from the popular John Deere 2032R model), and smart tips for keeping your system in top shape. Whether you operate in the field, forest, or construction site, this guide helps you minimize downtime and extend your machine’s working life.