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| Illustration 1 | g00453783 |
Hydraulic Tank and Filter (1) Oil filter assembly (2) Filler tube (3) Return tube (4) Case drain return port (5) Main return port (6) Baffle assembly (7) Tube (8) Filter element (9) Bypass valve spring (10) Bypass valve | |
The hydraulic tank is located at the rear of the machine to the right of the fuel tank. The tank is sealed in order to prevent contamination. A screen is located in filler tube (2) in order to catch loose debris. Oil filter assembly (1) is located on the inside of the tank.
During normal operation, the oil comes from the implement control valve through main return port (5). The unfiltered oil travels through tube (3) upward to oil filter assembly (1). The oil enters the filter assembly and the tube around filter element (8) is filled. The oil travels through the filter which stops any debris that is in the oil. The oil from the inside of the filter element returns to the tank through tube (7) and baffle assembly (6) .
If filter element (8) becomes full of debris, then the restriction to oil flow causes the pressure to rise in the tube that is surrounding the filter element. The pressure increase causes bypass valve (10) to compress bypass valve spring (9). This allows the oil to flow directly to the inside of the filter element. Then, the oil exits in the same manner, as previously described.
| NOTICE |
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Damage to the components of the hydraulic system can occur if a filter element full of debris is left unchanged. The debris in the unfiltered oil that is passing through the bypass valve can cause damage to the components. Correct maintenance procedures must be used in order to ensure that filter element (8) does not become full of debris. |