2. Operation and Management Break-in Period of the Engine 2. If the oil indicator lamp on the apparatus is General Information Doosan engines are subjected to a final approval test to ensure the provision of high quality engines before being shipped to ensure the best quality possible. However, engines are not operated for a long period of time in this test. Therefore, new engines require a break-in period of during the initial 50 hours after delivery. By properly breaking- in an engine, the highest levels of engine performance can be maintained long-term. turned on or blinks, the oil pressure may be insufficient. In this case, check the oil level and replenish the oil if required.
When replenishing engine oil, do not exceed the maximum on the oil level gauge . If the oil level is normal, check other related parts such as the oil pressure sensor, oil pump, or oil line. CAUTION The oil pressure may increase with high rpm and decrease with low rpm. In addition, the pressure of cold oil may be higher at a specific rpm than of warm oil. This phenomenon may occur when the engine is operating successfully. Break-in Period of a New Engine If the engine's bearings are not properly broken in, they may be easily damaged and the lifetime of the engine may be shortened by overloading or high- speeds.
In order to prevent this, please follow the guidelines below for the initial 50 hours after delivery of new engine. 3. Check the coolant gauge on the apparatus and if the coolant circulates properly. If the coolant level 1. Fully warm up the engine until the engine in the supplementary tank is too low, the coolant temperature reaches normal operation condition, before starting operation of the engine. gauge may be inaccurate. (may be disturbed). 2. Do not overload the engine or operate it at 4. Exchange engine oil and oil filter after the break- in period. excessive RPM. 3. Do not operate the engine with high speed at idle. CAUTION 4. Do not rapidly start up or stop the engine.
If engine oil and oil filter need to be replaced, use only the genuine engine oil and parts recommended by Doosan. 5. Operate the engine with less than 70 % of the engine load. 6. Inspection, check, and repair of engines should be managed by officially-certified technicians at Operation after Break-in certified service centers in compliance with corresponding rules. Slowly preheat the engine when starting up during cold weather or in areas with cold climate. Do not rapidly raise the rpm while the engine has not been Check Points properly preheated yet. The engine consumes check the following during the break-in period of a new engine.
additional oil until its piston ring is positioned properly and operates successfully. Please check the engine oil level frequently during the initial 50 hour break-in 1. Periodically check if the engine oil level is period. between the minimum and maximum limit of the oil level gauge. CAUTION If you cannot accurately check the oil level through the oil level gauge, rotate the oil level gauge to 180 degree, put it in the guide tube, and then pull it out again to check. 2 - 4