C27 Generator Set Caterpillar

Refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations" for additional information.

Refer to this Operation and Maintenance Manual, "Severe Service Application" for information about operating an engine in a severe service application.

Note: Instructions for the installation of the filter are printed on the side of each Cat spin-on filter. For filters that are not Cat filters, refer to the installation instructions that are provided by the supplier of the filter.

Diesel Engine Oil

Cat DEO (Diesel Engine Oil)

Due to significant variations in the quality and in the performance of commercially available oils, Caterpillar makes the following recommendations:

• Cat DEO-ULS (Diesel Engine Oil Ultra Low Sulfur) (SAE 5W-40)

• Cat DEO-ULS (Diesel Engine Oil Ultra Low Sulfur) (SAE 10W-30)

• Cat DEO-ULS (Diesel Engine Oil Ultra Low Sulfur) (SAE 15W-40)

Engine Oil

Cat oils have been developed and tested in order to provide the full performance and life that has been designed and built into Cat engines.

Cat DEO-ULS or oils that meet the Cat ECF-3 specification and the API CJ-4 are required for use in the applications listed below. Cat DEO-ULS and oils meeting Cat ECF-3 specification and the API CJ-4 and ACEA E9 oil categories have been developed with limited sulfated ash, phosphorus, and sulfur. These chemical limits are designed to maintain the expected aftertreatment devices life, performance, and service interval. If oils meeting the Cat ECF-3 specification and the API CJ-4 specifications are not available, oils meeting ACEA E9 may be used. ACEA E9 oils meet the chemical limits designed to maintain aftertreatment device life. ACEA E9 oils are validated using some but not all ECF-3 and API CJ-4 standard engine performance tests. Consult your oil supplier when considering use of an oil that is not Cat ECF-3 or API CJ-4 qualified.

Failure to meet the listed requirements will damage aftertreatment-equipped engines and can negatively impact the performance of the aftertreatment devices. The Diesel Particulate Filter (DPF) will plug sooner and require more frequent DPF ash service intervals.

Typical aftertreatment systems include the following:

• Diesel Particulate Filters (DPF)

• Diesel Oxidation Catalysts (DOC)

• Selective Catalytic Reduction (SCR)

• Lean NOx Traps (LNT)

Other systems may apply.

S·O·S Services Oil Analysis

Caterpillar has developed a maintenance tool that evaluates oil degradation. the maintenance management also detects the early signs of wear on internal components. The Cat tool for oil analysis is called S·O·S Oil Analysis and the tool is part of the S·O·S Services program. S·O·S Oil Analysis divides oil analysis into four categories:

• Component wear rate

• Oil condition

• Oil contamination

• Identification of oil

These four types of analysis are used to monitor the condition of your equipment. The four types of analysis will also help you identify potential problems. A properly administered S·O·S Oil Analysis program will reduce repair costs and the program will lessen the impact of downtime.

The S·O·S Oil Analysis program uses a wide range of tests to determine the condition of the oil and the lubricated compartment. Guidelines that are based on experience and a correlation to failures have been established for these tests. Exceeding one or more of these guidelines could indicate serious fluid degradation or a pending component failure. A trained person at your Cat dealer should make the final analysis.

Refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations" in order to obtain additional information about S·O·S Services oil analysis. You can also contact your local Cat dealer in order to obtain additional information about the S·O·S Services Oil Analysis program.

Diesel Fuel Recommendations

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NACD Film

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EAME Film

Diesel fuel must meet “Cat Specification for Distillate Fuel” and the latest versions of "ASTM D975" or "EN 590" in order to ensure optimum engine performance. Refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations" for the latest fuel information and for Cat fuel specification. This manual may be found on the Web at Safety.Cat.com.

Misfueling with fuels of higher sulfur level can have the following negative effects:

• Shorten the time interval between aftertreatment device service intervals (cause the need for more frequent service intervals)

• Adversely impact the performance and life of aftertreatment devices (cause loss of performance)

• Reduce regeneration intervals of aftertreatment devices

• Reduce engine efficiency and durability.

• Increase the wear.

• Increase the corrosion.

• Increase the deposits.

• Lower fuel economy

• Shorten the time period between oil drain intervals (more frequent oil drain intervals).

• Increase overall operating costs.

Failures that result from the use of improper fuels are not Cat factory defects. Therefore the cost of repairs would not be covered by a Cat warranty.

Cat does not require the use of ULSD in off road and machine applications that are not Tier 4/Stage IIIB certified engines. ULSD is not required in engines that are not equipped with after treatment devices. For Tier 4/Stage IIIB/Stage IV certified engines always follow operating instructions. Fuel tank inlet labels are installed in order to ensure that the correct fuels are used.

Refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations" for more details about fuels, lubricants, and Tier four requirements. This manual may be found on the Web at Safety.Cat.com.

Lubricating Grease

Cat provides various greases that vary in performance from a moderate performance to high performance. Cat greases service the entire line of Caterpillar products in the wide variety of climates throughout the world. From this variety of Cat grease products, you can find a Cat grease that will meet or exceed the performance requirements of most engines.

The performance requirements of your engine must be determined before you select any Cat grease. Consult the recommendations for greases that are made by the OEM for the equipment. Then, consult with your Cat dealer for a list of greases that have the performance specifications and the available sizes of containers.

Note: Always choose grease that meets or exceeds the recommendations that are specified by the equipment manufacturer for the application.

If necessary, choose a single grease to use for all of the equipment at one site. Always choose a grease that meets or exceeds the requirements of the most demanding application. Remember that the products which barely meet the minimum performance requirements can be expected to produce the minimum lives of your parts. False economy is being used if a grease is purchased with the lowest cost as the only consideration. Instead, use the grease that yields the lowest total operating cost. This cost should be based on an analysis that includes the costs of parts, labor, downtime, and the grease that is required.

Note: Purge all of the old grease from a joint before you change from one type of grease to another type of grease. Some greases are not chemically compatible with other greases. Consult your supplier in order to determine if the greases are compatible.

If you are not certain that the old grease is compatible with the new grease, purge the old grease from the system. Install the new grease.

Note: All Cat greases are chemically compatible with each other. Mixing of Cat greases does not result in an adverse chemical reaction. However, mixing of Cat greases may result in reduced performance.

Non-Cat commercial greases are as a group second choice greases. Within this grouping of second choice greases, there are tiered levels of performance. For more information, refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engines Fluids Recommendations".

Coolant

The following two coolants are used in Cat Diesel Engines:

Preferred - Cat ELC (Extended Life Coolant) or a commercial extended life coolant that meets the Cat Engine Coolant -1 (EC-1) specification.

Acceptable - Cat DEAC (Diesel Engine Antifreeze/Coolant) or a commercial heavy-duty coolant that meets "ASTM D4985", or "ASTM D6210" specifications

Note: Cat DEAC does not require a treatment with a Supplemental Coolant Additive (SCA) at the initial fill. However, a commercial heavy-duty coolant that only meets the "ASTM D4985" specification will require a treatment with an SCA at the initial fill. A commercial heavy-duty coolant that meets the "ASTM D6210" specification will not require a treatment with an SCA at the initial fill. Read the label or the instructions that are provided by the manufacturer of the commercial heavy-duty coolant.

Note: These coolants will require a treatment with a supplemental coolant additive on a maintenance basis.

Note: Add the Cat ELC Extender at the halfway point of the coolant change interval.

Note: These coolant change intervals are only possible with annual S·O·S Services Level 2 coolant sampling and analysis.

S·O·S Services Coolant Analysis

Testing the engine coolant is important to ensure that the engine is protected from internal cavitation and from corrosion. The analysis also tests the ability of the coolant to protect the engine from boiling and from freezing. The S·O·S Coolant Analysis can be performed at your Cat dealer. Cat S·O·S Coolant Analysis is the best way to monitor the condition of your coolant and your cooling system. S·O·S Coolant Analysis is a program that is based on periodic samples.

For more information, refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engines Fluids Recommendations"