ROLLER 5293071 - Caterpillar

General System Components
Hydraulic Tank
Illustration 1 g01265818
View of the Operator Platform Toward the Rear (1) Hydraulic tank (2) Sight gauge (3) Breather (4) Fill port (5) Return filter (6) Filter indicatorHydraulic tank (1) is located to the rear of the operator platform. The following systems share a common hydraulic tank: propel hydraulic system, fan hydraulic system, auxiliary hydraulic system and water spray and emulsion spray systems.Sight gauge (2) indicates the oil level in the tank. The capacity of the hydraulic tank is 233 L (61.5 US gal). The tank is equipped with breather (3) . The breather limits the maximum pressure in the tank to 50 20 kPa (7 3 psi). The breather also limits the vacuum which can be created in the tank to a maximum of 2.0 0.7 kPa (0.3 0.1 psi). Fill port (4) is to the rear of the breather.Oil in the propel hydraulic system flows into the hydraulic tank through return filter (5) from the following components: fan circuit case drain, brake valve drain, hood lift valve drain and case drain lines. The filter housing contains filter indicator (6) and a bypass valve. The filter indicator shows whether the filter is plugged or the filter indicator show whether the filter needs to be serviced. If the filter indicator is in the red zone while the engine is operating at high idle and the oil is at normal operating temperature, the filter is plugged. If the pressure differential across the filter is greater than 172 kPa (25 psi), the bypass valve opens and the return oil flows directly into the hydraulic tank.Hydraulic Oil Cooler
Illustration 2 g01265820
View of the Front of the Machine (7) Cooling packageThe hydraulic oil cooler is part of cooling package (7) . The cooling package is located at the front of the machine. The engine compartment cover provides access to this component.Case drain oil from the front left propel motor and return oil from the fan hydraulic motor is sent through the oil cooler.Propel Charge Filters
Illustration 3 g01265825
View of the Right Side of the Machine Near the Steps (8) Rear charge filter (9) Front charge filter (10) Pressure switchThe machine is equipped with the following two charge filters: rear charge filter (8) and front charge filter (9) . The filters are located on the right side of the machine near the steps to the operator platform.The base of each charge filter contains pressure switch (10) and a bypass valve. The pressure switches are normally open. These switches sense the pressure differential between the inlet and outlet sides of the corresponding filter. The filter switches are wired in a parallel circuit. When the pressure differential across either filter is greater than 250 kPa (36 psi), the machine ECM reads a closed circuit across the switch. In this situation, the machine ECM initiates an alarm in order to alert the operator.If the pressure differential across a filter is greater than 250 kPa (36 psi), the bypass valve in the filter base opens. In