GASKET 4W7598 - Caterpillar

Adjustment of the Oil Change Interval
Note: Your Caterpillar dealer has additional information on these programs.Program A
Verification for an Oil Change Interval of 500 HoursThis program consists of three oil change intervals of 500 hours. Oil sampling and analysis is done at 250 hours and 500 hours for each of the three intervals for a total of six oil samples. The analysis includes oil viscosity and infrared (IR) analysis of the oil. If all of the results are satisfactory, the 500 hour oil change interval is acceptable for the engine in that application. Repeat Program A if you change the application of the engine.If a sample does not pass the oil analysis, take one of these actions:
Shorten the oil change interval to 250 hours.
Proceed to Program B.
Change to a preferred oil type in Table 1.Program B
Optimizing Oil Change IntervalsBegin with a 250 hour oil change interval. The oil change intervals are adjusted by increments. Each interval is adjusted an additional 50 hours. Periodic oil sampling and analysis is done during each interval. The analysis includes oil viscosity and infrared (IR) analysis of the oil. Repeat Program B if you change the application of the engine.If an oil sample does not pass the analysis, shorten the oil change interval, or change to a preferred multigrade oil type in the listing above.References
Reference: Special Publication, PEDP7036, "S O S Services"Reference: Special Publication, PEDP7076, "Understanding the S O S Oil Analysis Tests"Reference: Special Publication, PEHP7052, "Making the Most of S O S Services"Procedure for Changing Engine Oil and Filter
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, NENG2500, "Cat dealer Service Tool Catalog", and to Special Publication, GECJ0001, "Cat Shop Supplies and Tools" guide for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Park the machine on a level surface. Ensure that the parking brake is fully engaged. Lower the dump body and shut off the engine.Note: Drain the crankcase while the oil is warm and while the oil is well circulated. This ensures that waste particles will be suspended in the oil and that these particles will be removed as the oil is drained.
Illustration 1 g03492437
Remove the cover (1) from the crankcase guard.
Attach a suitable hose to the drain valve (2).
Open the oil drain valve until oil flows from the hole. Allow the oil to drain into a suitable container.
Remove the hose from the drain valve. Clean the oil drain valve and close the oil drain valve.
Raise the hood. Refer to Operation and Maintenance Manual, "Hood Control".
Illustration 2 g03492438Note: The engine oil filter (3) is remotely mounted on the right side of the engine.
Remove the oil filter with a strap type wrench. Discard the used oil filter properly. Refer to the Operation and Maintenance Manual, "Oil Filter