35 Maintenance Section Cooling System Specifications
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 required.
Use the equation that is in Table 24 to determine the amount of Caterpillar SCA that is required for maintenance, if necessary:
Table 26
SCA To Water Addition Equation For Maintenance
V × 0.023 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 27 is an example for using the equation that is in Table 24.
Table 27
NOTICE
Do not use the same vacuum sampling pump for extracting oil samples that is used for extracting coolant samples.
A small residue of either type sample may remain in the pump and may cause a false positive analysis for the sample being taken.
Always use a designated pump for oil sampling and a designated pump for coolant sampling.
Failure to do so may cause a false analysis which could lead to customer and dealer concerns.
Recommended Interval for S·O·S Coolant Sample
Table 28
SCA To Water Addition Equation Example
For Maintenance
Total Volume | Multiplication | Amount of SCA |
of the Cooling | Factor | that is Required |
System (V) |
| (X) |
|
|
|
946 L | × 0.023 | 22 L |
(250 US gal) |
| (6 US gal) |
|
|
|
Recommended Interval
Type of Coolant | Level | 1 | Level 2 |
|
|
|
|
DEAC | Every 250 | Hours | Yearly |
|
|
| |
ELC | Not Required | Yearly | |
|
|
|
|
Converted Systems
Note: Specific engine applications may require maintenance practices to be periodically evaluated in order to properly maintain the engine’s cooling system.
Table 23 lists part numbers and quantities of SCA that is available from your Caterpillar dealer.
i01053475
S·O·S Coolant Analysis
SMCS Code: 1350; 1352; 1395;
Testing the engine coolant is important to ensure that the engine is protected from internal cavitation and from corrosion. The analysis also tests the ability of the coolant to protect the engine from boiling and from freezing. The 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.
Perform a coolant analysis (Level 2) 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 1) 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 analysis
The results are reported, and appropriate recommendations are made.