CABLE, GROUND 0993596 - Caterpillar

Illustration 1 g03086478The brake oil cooler is located on the right side of the engine. Engine coolant from the water pump flows through the engine oil cooler, through the power train oil cooler and then through the lower half of the brake oil cooler. The engine coolant then flows back through the top half of the brake oil cooler to the cylinder block.The brakes are cooled by oil. The cooling oil comes from the brake cooling and hoist section of the gear pump. The oil from the brake cooling and hoist section of the gear pump flows to the hoist control valve. When the hoist control is in the HOLD, or the FLOAT position, oil flows through the hoist control valve to the brake oil cooler. After the oil goes through the brake oil cooler, the oil will flow to the brakes. After the oil flows through the brakes, the oil will return to the hydraulic tank.The brake cooling circuit has a brake oil cooler relief valve in the hoist control valve. The brake oil cooler relief valve controls the maximum pressure in the brake oil cooling circuit.