LOCK-NUT 9H1861 - Caterpillar

Selection of the Oil Change Interval
A 500 hour engine oil change interval is available, provided that the operating conditions and recommended multigrade oil types are met. When these requirements are not met, shorten the oil change interval to 250 hours, or use an S O S Services oil sampling and analysis program to determine an acceptable oil change interval.If you select an interval for oil and filter change that is too long, you may damage the engine.
Cat oil filters are recommended. Refer to this Operation and Maintenance Manual, "Lubricant Viscosities" for further information about oils that may be used in Cat engines.Refer to this Operation and Maintenance Manual, "Severe Service Application " to determine if oil change interval should be reduced from the normal change interval. If operating in any of the conditions or environments outlined in the Severe Service Application, use S O S Services oil analysis to determine the best oil change interval. If S O S Services oil analysis is not being used, oil change interval should be reduced to 250 hrs.
Table 1
Oil Change Interval (1)    
Multigrade Oil Type
    Operating Conditions    
Normal Severe Service Application    
Cat DEO-ULS     500 hr     250 hr    
Oil meeting the requirements of the Cat ECF-3 Specification or the API CJ-4 classification
8 minimum TBN
Preferred     500 hr     250 hr    
Oil meeting the requirements of the ACEA C9/E6 Specification
TBN below 10.4     500 hr     250 hr    
( 1 ) The standard oil change interval in this engine is 500 hours, if the operating conditions and recommended oil types that are listed in this table are met. If the type of oil, the quality of the oil and the operating conditions fail to meet certain standards, the oil change intervals must be decreased to 250 hours. Refer to Special Publication, PEHJ0192, "Optimizing Oil Change Intervals" in order to determine whether the oil change interval should be reduced to 250 hours.Procedure for Changing the Oil
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, "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.
Fully open the engine hood.
The drain plug is located on the left side of the engine oil pan toward the rear of the machine. Open the oil drain valve and allow the oil to drain into a suitable container. Close the drain valve.
Illustration 1 g02713513
(1) Oil Filter (2) Oil Fill (3) Dipstick
Use a strap type wrench to remove the engine oil filter (1). Inspect the oil filter.
Clean the filter mounting base. Make sure that all of the used gasket has been removed.
Illustration 2 g00101318
Apply a thin coat of oil to the seal on the