HOW-TO SECTION
(960,000 km), four (4) years, or
10,000 operating hours, whichever
comes
fi
rst. At this time the coolant
should be drained, and the cooling
system should be thoroughly cleaned,
fl
ushed, and
fi
lled with new, properly
inhibited OAT coolant.
Chronic Coolant System
Problems
The most commonly seen coolant
system problems result from
maintenance and formulation factors
such as:
□
Hard water
□
Dilution of the coolant by the
addition of untreated water
□
Over dosage or under dosage of
corrosion inhibitors
□
Improper corrosion inhibitor (most
often phosphated)
□
Mixing SCAs
□
Improper testing
Detroit Diesel Cooling System
Maintenance Products
Power Cool
SCAs —
Power Cool
SCAs are water-soluble chemical
compounds. These products are
available in coolant
fi
lter elements,
liquid packages, and in fully
formulated
Power Cool
antifreeze.
NOTE:
Power Cool 3000 liquid SCA is more
compatible with hard water than
Power Cool 2000 SCA.
Power Cool
Coolant Filter
Elements —
Power Cool coolant
fi
lter elements (spin-on canisters) are
available in various sizes suitable for
cooling systems of varying capacities.
Selection of the proper element size
is vital when pre-charging non-fully
formulated coolant at initial
fi
ll and
at maintenance intervals.
A fully
formulated antifreeze must not
have SCA added at initial fill. Do
not use SCA-containing filters
with OAT antifreeze or coolant.
The need for maintenance elements
is determined by the results of the
nitrite concentration test performed
at each cooling system interval.
Do
not automatically install maintenance
elements at maintenance intervals,
unless the nitrite concentration falls
below 900 parts per million.
Power Cool
Cleaners —
Power
Cool
Liquid On-Line Cleaner is used
for light deposits.
Power Cool
Dry
Chemical Cleaner/Conditioner is used
for heavy deposits or scale.
102
All information subject to change without notice.
(Rev. May 2004)
DDC-SVC-MAN-0057 0305
Copyright © 2003 DETROIT DIESEL CORPORATION