3GFB10000-0 Tohatsu AIR COMPRESSOR ASSEMBLY

Selection of Oil Change Interval
Refer to this Operation and Maintenance Manual, "Refill Capacities and Recommendations" for further information about oils that may be used in Caterpillar engines.Reduced Oil Change Intervals
In some severe service applications, reducing the oil change interval may be necessary in order to maintain the integrity of the engine lubricant. Refer to this Operation and Maintenance Manual, "Severe Service Operation - Check" or consult with your Cat dealer in order to determine whether your engine is operating under severe service conditions. Some severe service operating conditions are listed below:
Abnormally harsh operating cycles
Harsh environments
Arctic temperatures
Corrosive environments
Extremely dusty conditions
Poor maintenance of air filters or of fuel filtersExtended Oil Change Intervals
Recommended multigrade oil types are listed in Table 1. Do not use single grade oils.Note: The following requirements must be met in order to use Table 1.
S O S Services oil analysis is performed at all oil changes. The S O S Services lab must be notified of the extended oil change interval. The use of an extended oil change interval makes a difference in the interpretation of the data.
Cat Advanced Efficiency oil filter is used.
A Cat Advanced Efficiency 4 micron(c) absolute or less fuel filter is used.
Table 1
Oil Change Interval for C9 Petroleum Engine (1)
Multigrade Oil Type Operating Conditions
Severe
Normal(2) High Load Factor above 43 L (11 US gal per hour of fuel)
(3) Fuel Sulfur from 0.3% to 0.5% Altitude above 1830 m (6000 ft)
(4)
Cat DEO
or Cat DEO-ULS
Preferred 250 hr 250 hr 250 hr 250 hr(5)
Oil meeting the requirements of the Cat ECF-2 or the Cat ECF-3 Specification
10.4 minimum TBN(4)
Preferred 250 hr 250 hr 250 hr 250 hr(5)
Oil meeting the requirements of the Cat ECF-1-a Specification
TBN(4) below 10.4 250 hr(6) 250 hr(6) 250 hr(6) 250 hr(6)
(1) The standard oil change interval in this engine is 250 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 meet certain standards, the oil change intervals may be increased to 500 hours. Refer to Special Publication, PEHJ0192, "Optimizing Oil Change Intervals" in order to determine whether the oil change interval can be extended beyond 250 hours.
(2) Normal conditions include these factors: Fuel sulfur below 0.3%, altitude below 1830 m (6000 ft) and good air filter and fuel filter maintenance. Normal conditions do not include high load factor, harsh operating cycles, or harsh environments.
(3) High load factors can shorten the service life of your engine oil. Continuous heavy load cycles and very little idle time result in increased fuel consumption and oil contamination. These factors deplete the oil additives more rapidly. If the average fuel consumption of your engine exceed 43 L (11 US gal) per hour, follow the “High Load Factor” recommendations in Table 1. To determine average fuel consumption for your engine, measure average fuel consumption for a period of 50 to 100 hours. If the application of the engine is changed, the average fuel consumption may change.
(4) For sulfur content above 0.5%, refer to, "Total Base Number (TBN) and Fuel Sulfur Levels for Direct Injection (DI) Diesel Engines" in Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations".
(5) Use "Program B" below to determine an appropriate interval.
(6) Use "Program A" below to determine an appropriate interval.Program A
Change to a preferred oil type in Table 1.
Proceed to Program BProgram B
Begin with a 250 hour oil change interval. The oil change intervals are adjusted by increments. Each interval is adjusted an additional 50 hours until the maximum of 500 hours. 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 listed above.References
Reference: Special Publication, PEDP7035, "Optimizing Oil Change Intervals"Reference: Special Publication, PEDP7036, "S O S Fluid Analysis"Reference: Special Publication, PEDP7076, "Understanding the S O S Oil Analysis Tests"Drain the Engine Oil
After the engine has been run at the normal operating temperature, stop the engine. Attach a "DO NOT OPERATE" or a similar warning tag to the ignition keyswitch before the engine is serviced.
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" or refer to Special Publication, PECJ0003, "Cat Shop Supplies and Tools Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Remove the oil drain plug in order to allow the oil to drain.
After the oil has drained, the oil drain plug should be cleaned and installed. Replace the Oil Filter