Engine Lubrication System Maintenance and Care Tips
The primary function of the engine lubrication system is to prevent friction between parts that have relative motion.
The circulation process of engine oil in the lubrication system involves the gear-type oil pump drawing oil from the oil pan, which then flows through the oil cooler and filter. After that, it goes into the left and right camshaft oil channels and the main oil channel, supplying oil to various parts such as the turbocharger, crankshaft, piston, and cooling nozzles. After completing its task, the oil naturally flows back to the oil pan due to gravity, starting the next cycle.
Engine Oil Grade
Caterpillar recognizes the oil certification and licensing system of the American Petroleum Institute (API). When multiple API grades are available, the higher grade should be selected.
Caterpillar Engine Oil (Cat DEO)
Caterpillar engine oil exceeds the performance requirements of many other diesel engine manufacturers. Therefore, this oil is an excellent choice for engines.
Engine Oil Level Check
The oil level checked when the engine is off is more accurate. When checking, ensure the engine is placed on a level surface.
Oil Filter Replacement
Replace the oil filter every time you change the oil, or when the oil filter pressure differential reaches 103 kPa. Note: Do not attempt to clean and reuse the oil filter.
Draining Engine Oil
Before changing the oil, old oil should be drained first. Be sure not to drain the oil when the engine is cold, as waste particles in the oil settle at the bottom of the oil pan. These waste particles may not be drained along with the cold oil. It's better to drain the oil when it is still warm after the engine has been running, which helps remove the waste particles suspended in the oil.
Inspecting Old Oil Filters
Cut off the end caps of the oil filter on both sides. Unfold the pleated paper and check for metal shavings. A large amount of metal shavings in the filter may indicate early wear or an impending failure. Use a magnet to separate any ferrous metals from non-ferrous metals found in the oil filter.
Adding Engine Oil
Remove the oil filler cap. Engine oil should only be added to the crankcase through the oil filler tube.
Crankcase Breather
The crankcase breather is a simple ventilation device located above certain valve covers and connected to the outside of the generator room via a breather pipe, ensuring it is vented to the atmosphere. Keep the crankcase breather and the breather pipe clear of blockages and free of accumulated oil.
