Books and Reference Manuals:

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Closed-loop (hydrostatic) hydraulic systems are used extensively in mobile and industrial machines. From the exterior, they appear complex and intimidating - and they certainly can be. This manual walks you through a hydrostatic transmission, step-by-step, explaining each and every component in detail. Illustrations and drawings are used throughout the manual to illustrate theory-of-operation and function.

This 100+ page manual is divided into four sections -

1.	Theory-of-operation of the principle parts of a closed-loop oil system.
2.	Where the principle parts of a closed-loop oil system are typically located and how they interact in the system.
3.	A step-by-step guide on how the oil flows through the main circuit, charge circuit, and case drain circuit.
4.	A comprehensive troubleshooting guide.