MOUNT 2032070 - Caterpillar

Table 10
Thermostats    
Part     On
Temperature     Off
Temperature     Location    
197-2040 Thermostat    
27 °C (81 °F)    
38 °C (100 °F)     Inlet to the jacket water heater's tank    
187-4191 Thermostat    
38 °C (100 °F)    
49 °C (120 °F)     Inlet to the jacket water heater's tank    
Inlet to the lube oil heater's tank
217-0165 Thermostat    
49 °C (120 °F)    
60 °C (140 °F)     Inlet to the jacket water heater's tank    
Inlet to the lube oil heater's tank
Lube oil heater's element
118-1300 Thermostat    
60 °C (140 °F)    
71 °C (160 °F)     Inlet to the jacket water heater's tank    
Lube oil heater's element Flow Switch
The flow switch is a protective device that is designed to protect the heater element and other components. This switch is located on the outlet of the heating tank. If the heating system's minimum flow rate is interrupted, the flow switch immediately shuts off the heating element and the flow switch activates the time delay relay. The minimum flow rate is 7.6 L/min (2 US gpm).The 4P-5135 Detection Switch is used in all the heating systems.Solenoid Valve
Note: The lube oil heater does not have a solenoid valve.The solenoid valve is located on the outlet of the jacket water heater's tank. The solenoid valve stops the backflow of coolant when the engine is running or the heating system has been shutdown.The 4P-5136 Solenoid Valve is used in all the jacket water heaters.Check Valve
Note: The jacket water heater does not have a check valve.The check valve is located on the outlet of the lube oil heater's tank. The check valve stops the backflow of engine oil when the engine is running.Note: The 197-2039 Valve is used in all the lube oil heaters.Pressure Relief Valve
The pressure relief valve protects the heater's components by relieving excess pressure.The lube oil heater's pressure relief valve is located inside the lube oil heater's pump. This valve is set to relieve pressure above 345 kPa (50 psi) by recirculating the lube oil back through the pump.
The pressure relief valve can discharge hot pressurized fluid. If the pressure relief valve should open, personal injury may occur.To prevent injury if the pressure relief valve should open, ensure that the piping from the pressure relief valve is directed away from traffic areas.
The jacket water heater's pressure relief valve is set to open at a pressure of 620 kPa (90 psi). The 111-2102 Pressure Relief Valve is used on all jacket water heaters.Pumps and Pump Motors
The same pump is used for all jacket water heaters.Two different pumps are used for lube oil heaters. One of the pumps is used for the combined heater's lube oil heater. The other pump is used for stand-alone lube oil heaters. The pumps rotate in different directions.Table 11 lists the serviceable pumps and the proper repair part for each pump.
Table 11
Pumps and Repair Parts    
Pump Part     Application     Repair Part    
4P-5140 Coolant