Preparing The Coolant Solution; Installing The Antifreeze Solution; Draining The Cooling System - Hobart 140GT17P Operation And Maintenance Manual With Illustrated Parts List

OM-2029
CAUTION:
(a) DO NOT USE "METHANOL" OR ALCOHOL AS AN ANTIFREEZE.
(b) DO NOT USE TWO DIFFERENT TYPES OF ANTIFREEZE.MIXED SOLUTIONS (TWO TYPES)
MAKE IT IMPOSSIBLE TO DETERMINE IF THE COOLING SYSTEM HAS ADEQUATE PROTECTION
AGAINST FREEZING.
(2) Checking coolant solution
Check the solution frequently to be sure the cooling system has sufficient protection against freez-
ing.
NOTE:(a) When testing the solution, be sure the coolant is at operating temperature.
(b) Follow manufacturer's instructions on tester.

(3) Preparing the coolant solution

The following table (Figure 3) indicates the freezing points of solutions varying from 16% anti-
freeze 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. 6,E and 6,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 tight-
ened.
(f) Install the required amount of coolant: 12.44 gallons. Fill the system with coolant as outlined
under Para. 6, H.
E. Draining the Cooling System
Drain the cooling system immediately after stopping the engine, while most of the sediment is in sus-
pension. 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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September 30/89 Revised