3100 SERIES INDUSTRIAL ENGINES Caterpillar


Engine Lubrication System

Usage:



Checking Oil Pressure Gauge Reading

Observe the oil pressure gauge frequently. If the indicator registers below NORMAL, or fluctuates, determine the cause and take the necessary corrective measures.

Checking Oil Level

Check the oil level before starting. Maintain the oil level between the ADD and FULL marks on the dipstick. See the Lubrication and Maintenance Chart for proper oil.


CHECKING THE OIL LEVEL

Changing Crankcase Oil And Filters

Drain the crankcase with the engine stopped and oil warm.

1. Remove the crankcase drain plug.
2. Unscrew and remove the filters. Be sure the old filter gasket does not remain attached to the filter base: Leaking between the new and old filter gaskets will result.
3. Wipe the filter base.


WIPING THE FILTER BASE

4. Apply a thin coat of clean oil to the gasket of each new filter.
5. Install new filters. Hand tighten the filter 1/2 turn after the gasket contacts the filter base.
6. Install the drain plug. Fill the crankcase with clean oil. See the Lubrication and Maintenance Chart for refill capacity and proper oil to use.
7. Check oil level before starting.
8. Start and run the engine until it is warm; check for oil leaks.
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