105681-0241 ZEXEL 9 420 615 571 BOSCH AUTOM. ADVANCE MECHANISM 9420615571 1056810241 225002231a

Starting Aids
The use of a starting aid is a conventional method of assistance for cold starts in low temperature conditions. A variety of starting aids are available for Caterpillar engines. Follow the recommendations that are provided by the manufacturer of the starting aid.Engine Coolant Heaters
These heaters heat the engine coolant. The heated coolant flows through the cylinder block. The flow of heated coolant keeps the engine warm. A warm engine is easier to start in cold weather. Most coolant heaters use electrical power. A source of electricity is necessary for this type of heater. Other heaters that burn fuel are available as a source of heat. These heaters may be used in place of the electrical heaters.With either type of heater, starting aids and/or fuels with higher cetane numbers are less important because the engine is warm. Problems with fuel cloud point can cause the plugging of fuel filters. Problems with fuel cloud point cannot be corrected by engine coolant heaters. This is especially true for fuel filters that are cooled by air flow during operation.Fuel Heaters
A thermostatically controlled fuel heater can be installed when the use of No. 2 diesel in the winter cannot be avoided. Fuel heaters can help prevent fuel filters from plugging due to waxing and the formation of ice crystals from excessive water. A fuel heater is not effective for cold starts unless the fuel heater can be powered by an external power source. The fuel heater should be connected to the power source while the engine is not operating. A fuel heater can be installed in order to heat the fuel before the fuel enters the primary fuel filter. Select a fuel heater that is mechanically simple, yet adequate for the application. Choose a fuel heater with a large heating surface that is practical. Small heaters can be too hot because of the limited surface area.Note: Heat exchanger type fuel heaters should have a bypass provision to prevent excessive heating of the fuel in warm weather operation. The excessive heating of the fuel will cause a loss of engine power. The maximum temperature of the fuel that is allowed for electronic engines can be found in the Operation and Maintenance Manual. Thermostatically controlled fuel heaters may be required for electronic engines. The following fuel heaters are available for use with Caterpillar engines, including PEEC engines and Electronic engines.
7C-3557 Fuel Heater Gp
7C-3558 Heater Kit Disconnect the fuel heater or deactivate the fuel heater in warm weather in order to prevent excessive heating of fuel and possible engine power loss. A gradual loss of engine power occurs as the fuel supply temperature increases. An electronic engine will self-adjust for higher fuel temperatures to a limit. See your Caterpillar dealer for information. De-Icers
De-icers lower the freezing point of the moisture in the fuel. De-icers are not generally needed when fuel heaters are used. If you experience trouble, consult your fuel supplier for recommendations of a compatible commercial de-icer.Fuel Tanks
Fuel tanks should contain some provision