ACCUMULATOR GP-RIDE CONTROL 3453674 - Caterpillar

the C4.4 marine auxiliary generator. The use of SCA and water in the cooling system could result in damage to the aluminum components.
Table 7
Coolant Recommendations for use in Cat Diesel Engines
Recommendations Product Service Hours(1)(2)(3) Required Maintenance
Preferred Cat ELC (Cat Extended Life Coolant) 12000 hours or 6 years Add Cat ELC Extender at 6000 service hours or one half of service life
Cat ELI (Cat Extended Life Inhibitor) 12000 hours or 6 years Add Cat ELC Extender at 6000 service hours or one half of service life
Min requirements Cat EC-1 specification and "ASTM D6210" and
Organic Additive Technology (OAT) based on a combination of a monocarboxylic acid and a dicarboxylic acid
Phosphate, borate, and silicate free
Tolyltriazole: minimum typical concnetration of 900 ppm
Nitrite: minimum typical concentration of 500 ppm in new coolants 6000 hours or 6 years Add Extender at 3000 service hours or one half of service life
Acceptable Cat DEAC (Cat Diesel Engine Antifreeze/Coolant) 3000 hours or 3 years SCA (Supplemental coolant additive) at maintenance intervals
Min requirements for fully formulated Heavy Duty Commercial coolants "ASTM D6210" and
Nitrite (as NO2) concentration: Minimum of 1200 ppm (70 grains/US gal) and maximum of 2400 ppm (140 grains/US gal)
Silicon concentration: minimum of 100 ppm and maximum of 275 ppm 3000 hours or 2 years SCA at maintenance intervals
Min requirements for Commercial coolants requiring SCA precharge "ASTM D4985" and(1)
Nitrite (as NO2) concentration: Minimum of 1200 ppm (70 grains/US gal) and maximum of 2400 ppm (140 grains/US gal)
Silicon concentration: minimum of 100 ppm and maximum of 275 ppm 3000 hours or 1 year SCA at initial fill and SCA at maintenance intervals
(1) New Coolants at 50 volume percent diluted. Coolants that are prediluted at the coolant manufacturer must be diluted with water that meets Reagent 4 "ASTM D1193" requirements.
(2) Maintain the in-service coolant at the given limits.
(3) When referring to the service hours, use the interval that occurs first. These coolant change intervals are only achievable with annual S O S Services Level 2 coolant sampling analysis.
Use Only Approved SCAs and ExtendersConventional coolants require the maintenance addition of SCA throughout the expected life of the coolants. Do NOT use an SCA with a coolant unless approved specifically by the coolant supplier. The coolant manufacturer is responsible for ensuring compatibility and acceptable performance.To help ensure expected performance, EC-1 coolants require the one time maintenance addition of an extender at coolant service mid-life. Do not use an extender with a coolant unless the extender has been approved specifically for use by the coolant manufacturer. The coolant manufacturer is responsible for ensuring compatibility and acceptable performance.Failure to follow these recommendations can result in shortened cooling system component life.
Cat ELC can be recycled into conventional coolants.For more information, refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations".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