DRIVE GP-FAN 2959439 - Caterpillar

Always use a designated pump for oil sampling, and use a separate designated pump for coolant sampling. Using the same pump for both types of samples may contaminate the samples that are being drawn. This contaminate may cause a false analysis and an incorrect interpretation that could lead to concerns by both dealers and customers.
Recommended Interval for S O S Coolant Sample
Table 1
Recommended Interval
Type of Coolant Level I Level II
DEAC Every PM Level 1 Yearly
ELC Not Required Yearly Converted Systems
Perform a coolant analysis (Level II) at 500 service hours for new systems or for converted systems that use ELC or use DEAC. This 500 hour check will also check for any residual cleaner that may have contaminated the system.S O S Coolant Analysis (Level 1)
A coolant analysis (Level I) is a test of the properties of the coolant.The following properties of the coolant are tested:
Glycol Concentration for freeze protection
Ability to protect from erosion and corrosion
pH
Conductivity
Water hardness
Visual analysis
Odor analysisThe results are reported, and appropriate recommendations are made.S O S Coolant Analysis (Level 2)
Level 2 coolant analysis is a comprehensive chemical evaluation of the coolant. This analysis is also a check of the overall condition of the inside of the cooling system.The S O S Coolant Analysis has the following four features:
Full analysis of Level 1
Identification of the source 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 possible electrolysis within the machines' cooling systemThe results are reported, and appropriate recommendations are made.For more information on S O S Coolant Analysis, consult your Caterpillar dealer.