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OM-2031
(3) Preparing the coolant solution
The following table (Figure 5) indicates the freezing points of solutions varying from 16%
antifreeze to 65% antifreeze. Percentages are based on permanent type (Ethylene Glycol)
antifreeze. Most antifreeze containers have a similar table printed on the label.
(4) Installing the antifreeze solution
Before installing antifreeze in the system, make the following checks:
(a) Check the system for signs of leaks.
(b) Inspect all hoses and tighten all hose clamps. Install new hoses if necessary.
(c) Drain and clean the system. Ref. Paras. 7,E and 7,F.
(d) Check the condition and tension of the fan and water pump belts and alternator belts. Replace
the belts if necessary.
(e) Be sure radiator and engine drain valves are closed, and all connections are securely
tightened.
(f) Install the required amount of antifreeze: 15.3 QUARTS. Fill the system with coolant as
outlined under Para. 7, H.
FREEZING POINT
(FAHRENHEIT)
20
+10
0
-10
-20
-30
-40
-50
-60
-70
E. Draining the Cooling System
Drain the cooling system immediately after stopping the engine, while most of the sediment is in
suspension. Proceed as follows:
(1) Remove radiator cap.
(2) Open radiator drain valve (at bottom of radiator) and engine drain valves. See John Deere Shop
Manual for exact locations of engine coolant drain valves.
NOTE: When draining the system for storage, remove all drain valves and remove drain plug.
(3) Allow the system to drain completely.
NOTE: Be sure the drain valves do not plug-up during draining.
(4) When the system is completely drained, close all drain valves except when draining for storage.
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PERCENTAGE OF ANTI-
FREEZE IN SOLUTION
16%
25%
33-1/3%
40%
45%
50%
54%
58%
62%
65%
Antifreeze Solution Table
Figure 5
November 18/91 Revised
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