DISC-FRICTION 3781880 - Caterpillar

Clean/Test
Oil Cooler and Aftercooler Cores
Caterpillar recommends that the oil cooler and aftercooler cores be removed, cleaned and pressure tested at Overhaul.
Do not use caustic cleaners to clean the core. Caustic cleaners will attack the internal metals of the core and cause leakage.
Refer to the Aftercooler topic in the Every 2400 Hours section of this publication for the cleaning procedure. The aftercooler core cleaning procedure may also be used for cleaning the oil cooler core.Obtain Coolant Analysis
The concentration of SCA should be checked regularly for over or under concentration. This should be done with test kits, or S O S Coolant Analysis (Level I) at the Every 250 Hours interval.Further coolant analysis is recommended at Overhaul.For example, suppose considerable deposits are found in the water jacket areas on the external cooling system, yet coolant additive concentrations were carefully maintained. Chances are that the coolant water had minerals which deposited on the engine over time.One way to verify the water condition, or to be sure of new water at fill time, is to have a coolant analysis conducted. Full water analysis can sometimes be obtained locally by contacting your local water utility company or an agricultural agent. Private laboratories are also available.Caterpillar recommends S O S Level II Coolant Analysis. Level II: Comprehensive Cooling System AnalysisCompletely analyses coolant and coolant effects on the cooling system. Level II Analysis provides:* full Level I analysis* visual properties inspection* metal corrosion and contaminant identification* identification of built-up impurities that point to corrosion and scaling problems BEFORE they lead to costly repairs.Level II Analysis provides a report of results, and makes recommendations.For more information on coolant analysis and how it can help you manage your equipment, see your Caterpillar dealer.Cooling System (Extended Life Coolant Only)
Drain/Flush/Replace ELC
Only clean water is needed to clean and flush the cooling system when ELC is drained and replaced.Drain
1. Stop the engine and allow the engine