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Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin. |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
Note: The oil change intervals are determined by close monitoring of the oil condition and engine wear metals. Caterpillar recommends S·O·S sampling as the proper method of checking engine wear metals.
Consult your Cat dealer for the latest oil recommendations.
Reference: Special Instruction, M0084929, "Process for Optimizing or Extending Oil Drain Intervals on Certain 797 Off Highway Trucks Equipped with Centrifugal Oil Filter"
Note: To access the oil filler tube, it may be necessary to use a portable access system (ladder, stair assembly, man lift, or other portable access system) that is suitable and compliant to local regulations.
- Prepare the machine for maintenance. Refer to Operation and Maintenance Manual, "Prepare the Machine for Maintenance". Refer to step for maintenance that DOES NOT require the engine to be running.
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Illustration 1 g02000013 - Drain the engine crankcase with the oil warm. Open drain valve (1) and drain the oil into a suitable container. Close the drain valve after the oil is drained.
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Illustration 2 g06268940 - Remove drain plug (2) from the bottom of the crossover tube. Drain the oil into a suitable container.
- Replace the seal for the drain plug. Wash the drain plug with clean nonflammable solvent and install the drain plug.
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Illustration 3 g06268238 - Remove the filler cap (3) to fill the crankcase with oil. install the filler cap after the oil is at the proper level. Refer to Operation and Maintenance Manual, "Lubricant Viscosities" for the type of oil. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the amount of oil.
- Start the engine and operate until operating temperature is reached.
- Stop the engine.
- Prepare the machine for maintenance. Refer to Operation and Maintenance Manual , Prepare the Machine for Maintenance.
- Inspect component and area for signs of leakage. Make any necessary repairs.
- Maintain the oil level within the green range on the sight gauge.
- If the engine is stopped and the oil is cold, maintain the oil level in green range (A).
- If the engine is running at low idle and the oil is at operating temperature, maintain the oil level in green range (B).
Engine Oil Fill with Wiggins Fast Fill Service Center (If Equipped)
Refer to Operation and Maintenance Manual, "Fast Fill Service Center" for more information.