Increased internal leakage of the hydraulic system is one of the signs of failure or damage of the tractor hydraulic system. The wear and aging of the elements in the hydraulic system can-not be avoided, but with proper maintenance and proper handling, we can significantly affect the length of the system life. The purpose of the task is to present the operation of the hydraulic system of an older universal tractor, create a hydraulic diagram and to introduce all the important elements in the hydraulic system and describe their operation.
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