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| Illustration 1 | g00495864 |
(1) Hydraulic tank (2) Filter elements (two) (3) Covers (two) (4) Tube from oil cooler bypass valve (5) Base (6) Filter bypass valve (7) Spring (8) Tube | |
Each filter element (2) is held in position inside hydraulic tank (1) by base (5) and cover (3). The oil flows to the inside of filter elements (2). The oil flows through the elements and back to hydraulic tank (1). The elements stop any debris that is in the hydraulic oil.
If the filter elements become full of debris, the restriction to the flow of oil causes a pressure increase inside filter elements (2). The pressure of the oil causes filter bypass valve (6) to move against the force of spring (7). This allows the oil to flow through tube (8) into the hydraulic tank.
When the oil does not flow through the filter elements, the debris in the oil causes damage to other components within the hydraulic system. Correct maintenance must be performed in order to make sure that filter elements (2) do not become full of debris.