SHIM-LINER 5S8142 - Caterpillar

Illustration 1 g00629569
Engine Cooling SystemIn the engine cooling system, the radiator cooling piston pump provides oil flow to the radiator cooling fan motor. The radiator cooling fan motor drives the radiator cooling fan.The radiator cooling piston pump is the top left hand pump on the pump drive. The pilot and air conditioner gear pump is mounted and splined to the end of the radiator cooling piston pump. The regulator control valve for the radiator cooling piston pump is mounted on the top right rear corner of the pump.The cooling pump control solenoid valve for the radiator cooling piston pump is located in the control manifold valve to the left of the hydraulic cooling pump control solenoid valve.The radiator cooling fan motor and the radiator cooling fan are mounted in front of the engine radiator at the front of the right hand module. Lines from the radiator cooling fan motor are connected to the fan motor makeup valve.The engine coolant temperature sensor is located at the left front corner of the engine. The engine control module is located on the right front corner of the engine.Operation of the Engine Cooling System
The engine temperature sensor provides a signal about the temperature of the engine coolant to the engine control module. The engine coolant temperature is monitored by the engine control module. The engine control module signals the machine control module about the state of the coolant. The machine control module sends a Pulse Width Modulated (PWM) signal to the control solenoid valve. The control solenoid valve modulates the signal pressure from the solenoid valve back to the regulator control valve for the radiator cooling piston pump in order to control the pump flow. The flow from the radiator cooling piston pump is directed to the radiator cooling fan motor, the fan motor makeup valve, and the control solenoid valve. The control solenoid valve regulates the signal pressure to the regulator control valve for the radiator cooling piston pump.If the engine coolant temperature rises above 107 °C (225 °F), the engine control module will derate the engine horsepower up to 15 percent until the problem with overheating is eliminated.The engine control module also sends a signal about the engine coolant temperature to the Vital Information Management System (VIMS) module over the Cat data link. The VIMS module makes the information about the temperature available to the operator in the cab. The VIMS module is located behind the cover of the large electrical panel that is located in the cab support.Operation of the Radiator Cooling Fan
Illustration 2 g00537779
Chart of Fan Speeds for the Engine Cooling SystemWhen the engine is operating with a coolant temperature below 88°C (190°F),