COVER 3P9397 - Caterpillar

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Run the engine at low idle for three to five minutes or run the engine until the jacket water temperature starts to rise.
Check all of the gauges during the warm-up period.
Make another walk-around inspection. Check the engine for fluid leaks and air leaks. Measure the engine oil level. Maintain the engine oil level between the "ADD" mark and the "FULL" mark on the engine oil level gauge.
Increase the rpm to one-half of the rated speed. Check for fluid leaks and air leaks. The engine may be operated at full rated speed and full load when the jacket water temperature reaches 66°C (150°F).