CYLINDER & SEAL GP-BOOM 2541315 - Caterpillar

Illustration 1 g01137311
Radiator Assembly
(A) Hydraulic Oil Cooler The hydraulic oil cooler (A) is an oil-to-air design. The cooler replaces one of the AMOCS radiator cores. After the charge pump oil is cooled, the oil is sent to the filter. The oil then flows to the steering pump. The cooler dissipates the heat from the implement and steering systems in order to prevent overheating.Oil Cooler Bypass Valve
Illustration 2 g00532404
Oil Cooler Bypass Valve
(1) Port (inlet from charge pump)
(2) Blocked port
(3) Bypass valve
(4) Port (outlet to filter base)
(5) Port (outlet to oil cooler) The steering loop charge pump takes oil from the tank and the pump sends the oil to inlet port (1). If the oil temperature is below 57 °C (135 °F), most of the oil is sent through bypass valve (3) to outlet port (4). Then, the oil flows to the steering pump charge circuit. When the oil temperature is 66 °C (150 °F), bypass valve (3) is completely closed. The oil flows through outlet port (5) to the oil cooler. The oil flows to the steering motor case and steering pump case for cooling purposes.