ROD-EXTENSION 1463271 - Caterpillar

Illustration 1 g00274564
(1) Hydraulic oil tank
Illustration 2 g00490437
(1) Hydraulic oil tank (2) Internal baffle (3) Filter element (4) Bypass valve (AA) Suction port (BB) Case drain return port (CC) Implement return portHydraulic tank (1) is located directly behind the operator's cab. The oil reservoir that is not vented contains a reverse flow filter element. Pressure is relieved when the cap is loosened. Hydraulic oil tank (1) is designed with internal baffle (2) . Internal baffle (2) improves the oil circulation in hydraulic oil tank (1) . Internal baffle (2) provides a continuous flow of hydraulic oil to the all wheel drive gear pump. Suction port (AA) is provided in hydraulic oil tank (1) for the all wheel drive gear pump. Case drain return port (BB) and implement return port (CC) combine the oil into the manifold. The manifold routes the oil through the bottom of filter element (3) and inside of filter element (3) . The filter element is positioned below the oil level in order to reduce turbulence.If filter element (3) becomes full of debris, oil cannot pass through the filter element. The restriction to oil flow causes a pressure increase which opens bypass valve (4) . A pressure of 35 kPa (5 psi) will cause the bypass valve to open. Now, the oil is allowed directly into hydraulic tank (1) . When oil bypasses filter element (3) , debris in the oil will cause damage to other system components. Correct maintenance must be used in order to make sure that the filter element does not stop the flow of clean oil to the hydraulic system.