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34
Maintenance Section
Cooling System Specifications
Ta bl e 2 2
Caterpillar SCA Requirements for SCA and
Water Cooling Systems
Cooling System
Capacity
Caterpillar SCA
at Initial Fill
Caterpillar SCA
at 250 Hours
22 to 30 L
(6 to 8 US gal)
1.75 L (64 fl oz) 0.44 L (15 fl oz)
31 to 38 L
(9 to 10 US gal)
2.30 L (80 fl oz) 0.57 L (20 fl oz)
39 to 49 L
(11 to 13 US gal)
3.00 L (100 fl oz) 0.75 L (25 fl oz)
50 to 64 L
(14 to 17 US gal)
3.90 L (128 fl oz) 0.95 L (32 fl oz)
65 to 83 L
(18 to 22 US gal)
5.00 L (168 fl oz) 1.25 L (42 fl oz)
84 to 110 L
(23 to 29 US gal)
6.60 L (224 fl oz) 1.65 L (56 fl oz)
111 to 145 L
(30 to 38 US gal)
8.75 L (296 fl oz) 2.19 L (74 fl oz)
146 to 190 L
(39 to 50 US gal)
11.50 L
(392 fl oz)
2.88 L (98 fl oz)
191 to 250 L
(51 to 66 US gal)
15.00 L
(512 fl oz)
3.75 L (128 fl oz)
Refer to Table 23 for part numbers and for quantities
of SCA.
Ta bl e 2 3
Caterpillar Liquid SCA
Part Number
Quantity
6V-3542 0.24 L (8 oz)
111-2372 0.36 L (12 oz)
8T-1589 0.47 L (16 oz)
3P-2044 0.94 L (32 oz)
8C-3680 19 L (5 US gal)
5P-2907 208 L (55 US gal)
Maintain the SCA in the same way as you would
maintain a cooling system that uses heavy-duty
coolant/antifreeze. Adjust the maintenance for the
amount of SCA additions. See Table 22 for the
amount of SCA that is required.
Cooling Systems with Larger
Capacities
Adding the SCA to Water at the Initial Fill
Use the equation that is in Table 24 to determine
the amount of Caterpillar SCA that is required at
the initial fill. This equation is for a mixture of only
SCA and water.
Ta bl e 2 4
Equation For Adding The 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 SCA that is required.
Table 25 is an example for using the equation that
is in Table 24.
Ta bl e 2 5
Example Of The Equation For Adding The SCA
To Water At The Initial Fill
Total Volume
of the Cooling
System (V)
Multiplication
Factor
Amount of SCA
that is Required
(X)
946 L
(250 US gal)
× 0.07 66 L
(18 US gal)
Adding the SCA to Water for Maintenance
For the recommended service interval, refer to the
Operation and Maintenance Manual, “Maintenance
Interval Schedule” for your engine.
Use the 8T-5296 Coolant Conditioner Test Kit to
test the concentration of SCA. Make the following
modifications to Steps 3 and 5 of the 8T-5296
Coolant Conditioner Test Kit instructions:
STEP 3 – Add tap water to the vial up to the “20
ml” mark.
STEP 5 – When the defined procedure is used,
a concentration of six to eight percent will yield
between 20 drops and 27 drops. If the number of
drops is below 20 drops, the concentration of SCA
is low. If the number of drops is above 27 drops, the
concentration of SCA is high. Make the appropriate
adjustments to the concentration of SCA.
Test the concentration of SCA or submit a
coolant sample to your Caterpillar dealer. See
this publication, “S·O·S Coolant Analysis” topic
(Maintenance Section).
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