0351146 JOHNSON *WASHER, Screw

Use Only Approved SCAs. Conventional coolants require the maintenance addition of SCA throughout their expected life. Do NOT use an SCA with a coolant unless specifically approved by the coolant supplier for use with their coolant. It is the responsibility of the coolant manufacturer to ensure compatibility and acceptable performance.Failure to follow the recommendations can result in shortened cooling system component life.
Cat SCA is compatible with Cat DEAC. If you use non-Cat brand conventional coolants, consult with the coolant manufacturer for information on a compatible SCA.
Do NOT mix brands or types of coolant. Do NOT mix brands or types of SCA and/or brands or types of extenders. Different brands or types may use different additive packages to meet the cooling system requirements. Different brands or types may not be compatible.Failure to follow the recommendations can reduce cooling system component life unless appropriate corrective action is performed.
If non-Cat conventional coolants that meet Cat minimum published requirements are used, confirm with the coolant manufacturer before using Cat SCA that Cat SCA is acceptable for use with the coolant. Do not exceed the 6 percent maximum concentration. Check the concentration of SCA with a SCA test kit, or check the concentration of SCA with Cat S O S coolant analysis.Cat engine cooling systems should be tested at 250 hour intervals or at the PM Level 1 intervals for the concentration of SCA (Supplemental Coolant Additive).Note: Acceptable conventional heavy-duty coolant/antifreeze of all types REQUIRE periodic additions of SCA.Follow the maintenance information provided in this Special Publication, "Coolant and General Maintenance Recommendations" section.Note: Specific engine applications may require maintenance practices to be periodically evaluated to maintain the engine cooling system properly.The availability of part numbers will vary from one region to another region.Do not exceed the 6 percent maximum concentration. Check the concentration of SCA with a SCA test kit, or check the concentration of SCA with Cat S O S coolant analysis.Adding the SCA to Pure Water or a Pure Water/Glycol Mixture at Initial Fill
For initial fill, Cat SCA added to pure water provides corrosion protection of the system. Ensure that the water meets quality requirements detailed in the Table “Cat Minimum Acceptable Water Requirements”, found in this Special Publication, "General Coolant Information". Also, ensure that the water or water/glycol mixture have not had additives previously added. Use the equation in Table 1 to determine the volume of the Cat SCA that is needed. The initial concentration of the SCA is recommended to be 7 percent. Once the coolant has been in service, maintain the SCA to a 3 to 6 percent range. Refer to the maintenance section for details.
Table 1
Equation For Adding The Cat SCA To Water At The Initial Fill
V × 0.07 = X
V is the total volume of the cooling system.
X is the amount of Cat SCA that is required. Table 2 is an example for using the equation that is in Table 1.
Table 2
Example Of The Equation For Adding The Cat SCA To Water At The Initial Fill
Total Volume of the Cooling System (V) Multiplication
Factor Amount of Cat SCA that is Required (X)
946 L
(250 US gal) × 0.07 66 L
(18 US gal) Adding the SCA to Conventional Coolant/Antifreeze For Maintenance
Conventional heavy-duty coolant/antifreeze of all types REQUIRE periodic additions of a supplemental coolant additive.Test the coolant/antifreeze periodically for the concentration of SCA. For the interval, see the Operation and Maintenance Manual, "Maintenance Interval Schedule", for your engine. SCA test kits are available from your Cat dealer. Test the concentration of SCA or submit a coolant sample to your Cat dealer. Refer to this Special Publication, "S O S Services Coolant Analysis", article.Additions of SCA are based on the results of the test or based on the results of the coolant analysis. The size of the cooling system determines the amount of SCA that is needed.
Table 3
Equation for the Addition of Cat SCA To Water For Maintenance
V × 0.023 = X
V is the total volume of the cooling system.
X is the amount of Cat SCA that is required. Table 4 is an example for using the equation that is in Table 3.
Table 4
Example of the Equation for the Addition of Cat SCA To Water For Maintenance
Total Volume of the Cooling System (V) Multiplication
Factor Amount of Cat SCA that is Required (X)
946 L
(250 US gal) × 0.023 22 L
(6 US gal) Note: Specific engine applications may require maintenance practices to be periodically evaluated to maintain the engine cooling system properly.Cleaning the System of Heavy-Duty Coolant/Antifreeze
Before Cat SCA can be effective, the cooling system must be free from rust, scale, and other deposits. Preventive cleaning helps avoid downtime caused by expensive out-of-service cleaning required for extremelydirty and neglected cooling systems.Cat Cooling System Cleaners
Dissolves or depresses mineral scales, corrosion products, light oil contaminations, and sludges
Cleans the cooling system after used coolant is drained or before the cooling system is filled with new coolant
Cleans the cooling system whenever the coolant is contaminated or whenever the coolant is foaming
The “Standard” version of the Cat Cooling System Cleaners clean the cooling system while still in service.
Reduces downtime and cleaning costs
Helps avoid costly repairs from pitting and other internal problems caused by improper cooling system maintenance
Can be used with glycol-based antifreeze
For the recommended service interval, refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for your engine.Cat Standard Cooling System Cleaners are designed to clean the cooling system of harmful scale and corrosion without removing the engine from service. The cleaners, both “Standard” and “Quick Flush” can be used in all Cat engine cooling systems. Consult your Cat dealer for part numbers.Note: These cleaners must not be used in systems that have been neglected or that have heavy scale buildup. These systems require a stronger commercial solvent that is available from local distributors.