Draining, Flushing, and Refilling Cooling System

SERVICE INTERVAL -
 
INITIAL - 3 YEARS
SCHEDULED - 2 YEARS *
 
* 5 Years or 5000 Hours if John Deere COOL-GARD is used

 

IMPORTANT: Avoid cooling system damage. Test or replace thermostats and radiator cap. See your John Deere Dealer.

causym CAUTION: Avoid personal injury. Keep hands out of fan discharge area when engine is running. Do not remove fill cap when engine is hot. Stop engine and wait until engine has cooled.

1. Slowly turn the surge cap to relieve pressure, then carefully remove cap.

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2. Remove bottom access panel and open radiator drain fitting (A) and engine block drain cock (B).

NOTE: Draining cooling system is best accomplished by removing the lower radiator hose.


A-Drain Fitting
B-Drain Cock

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3. Remove thermostat cover (A) and thermostats. Install cover without thermostats. Tighten cap screws.

IMPORTANT: Remove thermostats and operate cab heater during flushing procedure.

4. Close drain cocks and fill system with a commercial cooling system cleaning solution . Operate engine to normal temperature. Stop engine and drain system.

IMPORTANT: Never pour cold water or coolant into hot engine. Use warm water or wait until engine has cooled.

5. Close drain cocks and fill system with clean water . Operate engine to normal temperature. Stop engine and drain system.

NOTE: Vent notch of upper thermostat should be at the top when installing.

6. Remove thermostat cover and clean sealing area. Apply sealant to new gasket and install thermostats and gasket. Tighten cap screws to 48 N·m (35 lb-ft).

7. Close drain cocks again. Fill system with the specified coolant . Operate engine to circulate and mix coolant. Coolant level should be up to mark on expansion tank.

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A-Thermostat Cover

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