(39) Cooling System - Changing Antifreeze Solution
Do not use Caterpillar Cooling System Conditioner
At Operating Temperature, engine coolant is hot and
with Dowtherm 209 Full-Fill.
Steam can cause personal injury.
Check coolant level ONLY when engine is stopped
and radiator cap is cool enough to touch with your
Remove filler cap slowly to relieve pressure.
Cooling System Conditioner contains alkali. Avoid
contact with skin and eyes to prevent personal
Use only the coolant conditioner element or liquid
1. Loosen the radiator cap slowly to relieve pressure.
conditioner. Do not use both in the cooling system
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 Hours or 1
When additions of cooling system conditioner are
made Every 500 Service Hours or 3 Months, the
cooling system drain and refill period can be
extended to 4000 Service Hours or 2 Years.
If machine is to be stored in, or shipped to,
with below freezing temperatures; the
2. Open the radiator drain valve and drain the coolant.
system must either be protected to the