TM 5-3805-281-24-2
Fuels, Lubricants, and Coolant
REPLENISHING SUPPLEMENTAL COOLANT ADDITIVES (SCAS) BETWEEN COOLANT
CHANGES
Sampling of Coolant
Testing of Coolant for Glycol Concentration
Test the coolant solution at 600 hours or 12 months of
IMPORTANT: Do not add supplemental coolant
operation using either John Deere coolant test strips or
additives when the cooling system is
a CoolScanTM analysis. If a CoolScanTM analysis is not
drained and refilled with John Deere
available, recharge system per instructions printed on
ANTIFREEZE/SUMMER COOLANT or
label of John Deere Liquid Coolant Conditioner.
John Deere Cool-Gard.
IMPORTANT: ALWAYS maintain coolant at correct
Through time and use, the concentration of coolant
level and concentration. DO NOT
additives is gradually depleted during engine operation.
operate engine without coolant for
Periodic replenishment of inhibitors is required, even
even a few minutes.
when John Deere ANTIFREEZE/SUMMER COOLANT
or John Deere Cool-Gard is used. The cooling system
If frequent coolant makeup is
must be recharged with additional supplemental
required, the glycol concentration
coolant additives available in the form of liquid coolant
should be checked with JT05460
conditioner.
Refractometer to assure that the
desired freeze point is maintained.
Maintaining the correct coolant conditioner
Follow manufacturer's instructions
concentration (SCAs) and freeze point is essential in
provided with refractometer.
your cooling system to protect against rust, liner pitting
and corrosion, and freeze-ups due to incorrect coolant
Add the manufacturer's recommended concentration of
dilution.
supplemental coolant additive. DO NOT add more than
the recommended amount.
John Deere LIQUID COOLANT CONDITIONER is
recommended as a supplemental coolant additive
in John Deere engines.
CoolScan is a trademark of Deere & Company.
Continued on next page
RG,RG34710,1039
1923OCT971/2
