SADDLE A.-REAR 3B6580 - Caterpillar

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(1) Oil level gauge (dipstick) (2) Oil filler cap
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(3) "ADD" mark (4) "FULL" mark
If the engine is not running, start the prelube pump. If the engine is running, reduce the engine speed to low idle.
Remove the oil level gauge. Observe the oil level on the oil level gauge. Maintain the oil level between the "ADD" mark (3) and the "FULL" mark (4) .
Operating the engine with the oil level above the "FULL" mark could cause the crankshaft to dip into the oil.The air bubbles that are created by the crankshaft dipping into the oil reduces the lubricating characteristics of the oil. This could result in the loss of power and cause damage to the engine.Do not overfill the engine with oil.
If necessary, remove oil filler cap (2) and add oil. For the correct oil to use, see this Operation and Maintenance Manual, "Refill Capacities and Recommendations" topic (Maintenance Section). Do not fill the crankcase above "FULL" mark (4). Clean the oil filler cap. Install the oil filler cap.