Cooling System Maintenance; Coolant Requirements; Checking Coolant Condition; Checking Coolant Level - Cub Cadet 6X4 Shop Handbook

COOLING SYSTEM MAINTENANCE

1.

Coolant requirements

• The engine coolant should be sampled annually
or every 250 hrs of operation. Submit the cool-
ant sample to the partnering Caterpillar dealer
for S-O-S level-1 analysis. This includes check-
ing the glycol concentration, conductivity, pH
level, and concentration of SCA (Supplemental
Coolant Additive).
NOTE: Contact the partnering Caterpillar dealer
for specific instructions. Do not sample anti-
freeze using the same equipment used to sam-
ple engine oil.
NOTE: S-O-S level-1 analysis may indicate the
need for S-O-S level-2 analysis.
• The engine coolant should be changed every 2
years or 500 hrs of operation. Pressure test the
system and radiator cap at the same interval,
preferably before draining the old coolant.
• Use one of the following coolants in a 50/50
coolant/water solution:
Cat Diesel Engine Antifreeze/Coolant (DEAC)
Commercially available long-life coolant that
meets Caterpillar Engine Coolant Specification -
1 (Caterpillar EC-1).
Commercially available heavy-duty coolant that
meets ASTM D4985 or ASTM D6210.
• Avoid the use of coolant that meets only ASTM
D3306 specifications, intended for light-duty
automotive applications.
NOTE: Coolant specifications are usually listed
on the package label, or available on the coolant
manufacturer's web-site. If not specifically
listed, do not assume it meets the specification.
NOTE: Distilled or deionized water is recom-
mended for coolant solution if local tap water is
high in mineral content.
NOTE: SCA (Supplemental Coolant System
Additive) should not be necessary given the rec-
ommended coolant replacement interval for this
vehicle.
Chapter 8 - Caterpillar Engine and Related Systems
NOTE: Refer to the accompanying table for
water content specifications. Most cities or
counties can provide information about the con-
tent of the water provided through their systems.
Well water may require independent testing.
Property
Chloride (CI)
Sulfate
Total Hardness
Total Solids
Acidity
2.

Checking coolant condition

• Refer to the Coolant Requirements section of
this chapter.
• If coolant is suspect, the glycol concentration
can be tested using a commercially available
hydrometer or refractometer. It should be 50/50.
3.

Checking coolant level

• Check the coolant level in the plastic reservoir
when the engine is cold. The coolant expands
when the engine is hot, raising the level of cool-
ant in the reservoir. As the engine cools, the
coolant is drawn back into the radiator.
241
Maximum ASTM
limit Test
2.4 grains/ "D512"
U.S. gal. "D4327"
(40 mg/L)
5.9 grains/ "D516"
U.S. gal
(100 mg/L)
10 grains/ "D1126"
U.S. gal.
(170 mg/L)
20 grains/ "D1888"
U.S. gal.
(340 mg/L)
pH of 5.5 to "D1293"
9.0