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SECTION 8
MAINTENANCE
Page 18
ANTI-FREEZE
COOLING SYSTEM
Refer to your Cummins Engine Operator's
Manual for the
type of anti-freeze specified.
DO NOT use methanol or alcohol as an anti-freeze.
NOTE:
Do not mix
brands of anti-freeze
solutions.
Mixed solutions
make it impossible to determine the
protection
against freezing.
Check
the solution
frequently
and at normal
operating
temperature
to be sure the cooling
system has sufficient
protection
against freezing.
The following
table shows the percentage of anti-freeze solu-
tion required for the various temperatures.
Freezing
USE IN COOLING SYSTEM
Point
(Ethylene Glycol-
( Fahrenheit)
Permanent Type)
+200
16%
+100
25%
00
33-1/3%
-100
40%
-200
45%
-300
50%
-400
54%
-500
58%
-600
62%
-700
65%
NOTE: A further increase in anti-freeze volume decreases the
freezing point.
CLEANING
THE RADIATOR
Minor internal sludge accumulations
will be removed when
flushing the cooling system.
When internal
accumulations
are found that cannot be re-
moved by normal flushing methods, consult your authorized
I nternational
Construction
Equipment
distributor
or dealer.
Remove all bugs or dirt from the radiator core, using air or
water under pressure (Illust. 24). Direct the flow through the
core, opposite the normal direction of air flow.
lIIust.24
Cleaning Radiator.
RADIATOR
CAP
The radiator cap seals the coolant filler opening of the radia-
tor. Positive sealing requires a cap gasket and its contacting
surfaces be in good condition,
and a properly tightened cap.
u
CAUTION: WHEN CHECKING THE COOL-
ING SYSTEM ON A MACHINE THAT HAS
BEEN RUNNING, LOOSEN THE RADIA-
TOR CAP SLOWLY TO RELEASE ANY PRESSURE
THAT COULD HAVE ACCUMULATED, AND TO PRE-
VENT INJURY FROM OVERFLOWING HOT FLUIDS.
•
When installing the cap, the gasket and contacting surfaces
must be clean.
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