Note: Dispose of the following waste according to all applicable regulations: water that has been drained from a fuel tank, sediment and debris.
- Filter the fuel that is coming into the bulk fuel storage tank to 20 microns(c) or less.
- The filtration system on fuel tanks for bulk storage that are used for continuous filtration of stored fuel must be large. properly designed and properly grounded. The filter element or the filter elements should be rated at a maximum of 5 microns(c). Refer to the recommendations from the manufacturer of the fuel filters in order to properly change the fuel filters.
- Install water separators in two places: the device that dispenses fuel from the bulk fuel tank and the engine. The water separators that are made from wire mesh are not recommended.
- Install four micron(c) breather filters and properly maintain four micron(c) breather filters on both the engine fuel tank vent and on the bulk storage fuel tank vent. The breather vent filters that are filled with the desiccant are also recommended in order to remove moisture from the air that flows in the fuel tank. Breather filters are typically changed at six month intervals. The breather filters that are filled with the desiccant are typically changed when the filters are saturated. Refer to the literature that is included with the filter.
- Caterpillar strongly recommends the filtration of distillate diesel fuel through a filter with a rating of four microns(c) or less. These filters should be located in two places: the device that dispenses fuel to the fuel tank for the engine and the device that dispenses fuel from the bulk storage tank. Using a series of filters is recommended.
In North America, a diesel fuel that is listed below generally meets the specifications: No. 1-D, No. 1-D S15 and No. 2-D in "ASTM D975" .
These fuels are distilled from crude oil. Diesel fuels from other sources could exhibit detrimental properties that are not defined or controlled by this specification.
Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that relates to diesel fuel.
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Do not use a commercial coolant/antifreeze that only meets the ASTM "D3306" specification. This type of coolant/antifreeze is made for light duty automotive applications. Use only the coolant/antifreeze that is recommended. |
The following two types of coolants may be used in Caterpillar Engines:
Preferred - Cat ELC (Extended Life Coolant) or a commercial extended life coolant that meets the Caterpillar EC-1 specification
Acceptable - Cat DEAC (Diesel Engine Antifreeze/Coolant) or a commercial heavy-duty coolant/antifreeze that meets "ASTM D4985" or "ASTM D6210" specifications
Caterpillar recommends a 1:1 mixture of water and glycol. This mixture will provide optimum heavy-duty performance as a coolant/antifreeze.
Note: Cat DEAC does not require a treatment with an SCA at the initial fill. Commercial heavy-duty coolant or heavy-duty antifreeze that meets "ASTM D4985" or "ASTM D6210" specifications may require a treatment with an SCA at the initial fill. Read the label or the instructions that are provided by the OEM of the product.
In stationary engine applications and marine engine applications that do not require protection from boiling or freezing, a mixture of SCA and water is acceptable. Caterpillar recommends a minimum of six percent to a maximum of eight percent SCA concentration in those cooling systems. Distilled water or deionized water is preferred. Water which has the required properties may be used. For the water properties, refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that pertains to coolants.
Note: Table1 is a list of the coolants that are recommended and the service life (calendar) of the coolants. The service life of coolant is also limited by use (service hours). Refer to the specific engine's Operation and Maintenance Manual, "Maintenance Interval Schedule". To achieve this service life, the coolants must be properly maintained. The maintenance program includes S·O·S coolant analysis.
| Coolant Service Life | |
| Coolant Type | Service Life (1)(2) |
| Cat ELC | 12000 Service Hours or Six Years(3) |
| Commercial coolant that meets the Caterpillar EC-1 Specification | 6000 Service Hours or Six Years(4) |
| Cat DEAC | 3000 Service Hours or Three Years |
| Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D6210" | 3000 Service Hours or Two Years |
| Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D4985" | 3000 Service Hours or One Year |
| Cat SCA and water(5) | 3000 Service Hours or Two Years |
| Commercial supplemental coolant additive and water(6) . | 3000 Service Hours or One Year |
| (1) | Use the interval that occurs first. |
| (2) | Refer to this Operation and Maintenance Manual, "Maintenance Interval Schedule" for the correct interval for replacement of the cooling system water temperature regulator. |
| (3) | Cat ELC Extender must be added at 6000 service hours or one half of the service life of the Cat ELC. |
| (4) | An extender must be added at 3000 service hours or one half of the service life of the coolant. |
| (5) | The concentration of Cat SCA in a cooling system that uses Cat SCA and water should be from 6 to 8 percent by volume. |
| (6) | Consult the supplier for the commercial SCA for instructions on usage. |
Note: These coolant change intervals are only achievable 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 corrosion. The analysis also tests the ability of the coolant to protect the engine from boiling and freezing. S·O·S coolant analysis can be done at your Caterpillar dealer. Caterpillar 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.
S·O·S Services Coolant Analysis (Level 1)
A coolant analysis (Level 1) is a test of the following properties of the coolant:
- Glycol concentration for freeze protection and boil protection
- Ability to protect from erosion and corrosion
- pH
- Conductivity
- Visual analysis
- Odor analysis
For information about performing this maintenance, refer to this Operation and Maintenance Manual, "Coolant System Coolant Sample (Level 1) - Obtain". For information about performing this maintenance, refer to this Operation and Maintenance Manual, "Maintenance Interval Schedule".
S·O·S Services Coolant Analysis (Level 2)
A coolant analysis ( Level 2) is a comprehensive chemical evaluation of the coolant. The S·O·S coolant analysis ( Level 2) has the following features:
- Full coolant analysis (Level 1)
- Identification of metal corrosion and of contaminants
- Identification of buildup of the impurities that cause corrosion
- Identification of buildup of the impurities that cause scaling
- Determination of the possibility of electrolysis within the cooling system of the engine
Contact your local Caterpillar dealer for additional information concerning the S·O·S Services Coolant Analysis program.
To properly maintain the cooling system, the total cooling system capacity must be determined. The total cooling system capacity will vary between individual installations. The total cooling system capacity can include the following components: engine, expansion tank, heat exchanger, radiator, keel cooler and piping.
Refer to the specifications that are provided by Caterpillar or the OEM of the installation. Record the total cooling system capacity in the appropriate Table.
| Approximate Refill Capacities for 3500B Generator Set Cooling Systems | |||
| Engine | Radiator | Total cooling system | |
| 3508B Engine | |
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| 3512B Engine | |
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| 3512B Engine(1) | |
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| 3516B Engine(2) | |
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| 3516B Engine(3) | |
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| 3516B Engine(4) | |
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| (1) | 60 Hz engine with |
| (2) | 50 Hz engine with |
| (3) | 60 Hz engine with |
| (4) | 60 Hz engine with |