BEARING FRONT 7S8304 - Caterpillar

Cat Diesel Engines can operate effectively in cold weather. The starting and the operation of the diesel engine is dependent on the following items in cold weather:
The type of fuel that is used
The viscosity of the oil
Optional starting aids
Optional warm-up aidsRefer to Special Publication, SEBU5898, "Cold Weather Recommendations for Cat Machines".The purpose of this section will cover the following information:
Explain potential problems that are caused by cold-weather operation.
Suggest steps which can be taken in order to minimize starting problems and operating problems when the ambient air temperature is colder than 0 to −55 °C (32 to −67 °F).The operation and maintenance of an engine in freezing temperatures is complex because of the following conditions: the unlimited differences in weather conditions, engine applications and the supplies that are available in your area. These factors, recommendations from your Cat dealer, past proven practices, and the information that is contained in this section should be combined to provide guidelines for cold-weather operation.Hints for Cold Weather Operation
If the engine is started, operate the engine until a minimum operating temperature of 71 °C (160 °F) is achieved. Achieving operating temperature will help prevent the intake valves and exhaust valves from sticking.
The cooling system and the lubrication system for the engine do not lose heat immediately upon shutdown. This means that an engine can be shut down for a few hours and the engine will start readily. If the engine is shut down for at least 8hours, the engine should be considered cooled to outside temperature.
Install the correct lubricant in each compartment before the beginning of cold weather.
Check all rubber parts (hoses, fan drive belts, and so on) weekly.
Check all electrical wiring and connections for any fraying or damaged insulation.
Keep all batteries fully charged and warm.
Fill the fuel tank at the end of each shift.
Check the air cleaners and the air intake daily. Check the air intake more often when you operate in snow.
Personal injury or property damage can result from alcohol or starting fluids.Alcohol or starting fluids are highly flammable and toxic and if improperly stored could result in injury or property damage.
DO NOT USE ETHER (starting fluids) unless specifically instructed to do so. If the engine is equipped with an Air Inlet Heater (electrically or fuel ignited manifold heater), DO NOT use ether (starting fluids) at any time. The use could result in engine damage and/or personal injury.
The optional automatic ether injection system is the only starting fluid system that is recommended. Excessive starting fluid can cause piston and ring damage. Use starting fluid for cold starting purposes only.
Inject starting fluid only when the engine is cranking.
Dryers for the air system may be effective in reducing moisture condensation and the formation of ice in air systems.
The injection of alcohol may prevent moisture from freezing the air compressor governor and other components of the air system.
For jump starting with cables in cold weather, refer to the Operation and Maintenance Manual for jump starting instructions.Viscosity of the Engine Lubrication Oil
Proper engine oil viscosity is