Never add coolant to an overheated engine; allow
the engine to cool first. Check specific gravity of
antifreeze solution frequently in cold weather to
assure adequate protection.
Coolant should be drained and replaced "Every
2000 Service Meter Units." With additions of
Caterpillar Cooling System Conditioner or the use of
recommended, the drain period can be extended to
"Every 4000 Service Meter Units".
All water is corrosive at engine operating tempera
ture. The cooling system should be protected with
conditioner at all times regardless of concentration
When changing coolant or on initial fill, use a 3
percent solution of Caterpillar Cooling System
Conditioner. This can be accomplished with .5 liter
of conditioner for every 15 liters of cooling system
capacity (1 pint for every 4 gallons). This
concentration can be maintained by conditioner
additions "Every 250 Service Meter Units." Add .5
liter of conditioner for every 76 liters of cooling
system capacity (1 pint for every 20 gallons).
Most systems will require 2 liters (2 quarts) of con-
ditioner at initial fill and .50 liters (1 pint) "Every 250
Service Meter Units."
Do not use Caterpillar Cooling System Conditioner
with Dowtherm 209 Full-Fill coolant. Follow the re
commendations provided with the Dowtherm 209
If the engine is to be stored or used in an area with
below freezing temperatures, the cooling system must
Operate with a thermostat in the cooling system all year-
round. Problems can arise without a ther mostat in the
Use clean water that is low in scale forming minerals, not
Always recheck the coolant level when the engine
reaches normal operating temperature. Add coolant as
necessary to bring up to proper level.
Filling faster than 19 liters (5 U.S. gallons) per minute
can cause air pockets in the cooling system.
Premix the antifreeze solution to provide protection to the
lowest expected ambient temperature.
When using jumper cables to start the engine, be
sure to connect in parallel: POSITIVE (+) to POSI
TIVE (+) and NEGATIVE (-) to NEGATIVE (-).
When using external electrical source to start the
engine, turn the disconnect switch off and remove
the key before attaching jumper cables.
Never use both liquid cooling system condition er and
coolant conditioner element at the same time.
When permanent antifreeze and water solutions are
used in the cooling system, the solution should be
drained and replaced "Every 2000 Service Meter Units".
When cooling system conditioner additions are made
"Every 250 Service Meter Units" as recommended, this
change period can be extended to "Every 4000 Service
Meter Units or Two Years."
Scheduled Oil Sampling
Use Scheduled Oil Sampling to monitor engine condition
and maintenance requirements. Each oil sample should
be taken when the oil is hot and well mixed to insure a
sample which is representative of the oil in the
compartment. Samples should be taken at each engine
oil change. Consult your authorized Caterpillar engine
dealer for complete information and assistance in
establish ing a scheduled oil sampling program for your