Doosan P185WDOU-T4F, Operation And Maintenance Manual

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Operation & Maintenance Manual ENGINE OPERATION
2. Oil, air, or fuel leaks can cause a decrease in oil pressure. Oil leaks are especially
likely to cause the burning of bearings. As such, if oil, air, or gas leaks occur, check
the leaking parts and solve the problem.
During Operation
1. If oil pressure drops too low, it may cause abnormal wear and burning of bearings. If
oil pressure is too high, it may cause oil leakage.
2. Continuing to operate the engine after noises or vibrations coming from the engine
are noted may lead to serious engine damage. As such, if noises or vibrations come
from the engine, slowly decrease the rpm to stop the engine and determine the cause.
Shut down
Do not suddenly shut down the engine after operating under high loads for a long period. If
oil burns because of heat sent from the high-temperature turbine blade to the bearing part,
the bearing metal and rotating shaft may burn. As such, if the engine was operated under
high loads for a long period, sufficiently run the engine at idle before shut down.
Break-in Period of Engine
Doosan engines are subjected to a final approval test to ensure the provision of high quality
engines before being shipped. However, engines are not operated for a long period of time in
this test. Therefore, new engines require a break-in period during the initial 50 hours after
delivery. By properly breaking-in an engine, the highest levels of engine performance can
be maintained long term.
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.
1. Fully warm up the engine until the engine temperature reaches the normal operation
condition, before starting operation of the engine.
2. Do not overload the engine or operate it at too high RPM.
3. Do not operate the engine with high speed at idle.
4. Do not rapidly start up or shut down.
5. Do not 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 certified service centers in compliance with corresponding rules.
Check Points
Check the following during the break-in period of a new engine.
1. Periodically check to verify the engine oil level is between the minimum and maximum
limit of the oil level gauge.
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