Draining, Flushing, and Refilling Cooling System

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 (A) to relieve pressure, then carefully remove cap.

RW26601

AG,RF30435,2209 -19-19NOV99-1/3

2.

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

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

RW56204A
RW56206A

AG,RF30435,2209 -19-19NOV99-2/3

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

IMPORTANT: Remove thermostats; operate cab heater during entire flushing procedure.

4. Close drain cocks, fill system with a commercial cooling system cleaning solution . Operate engine up to operating 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, fill system with clean water . Operate engine up to operating 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 . 1 . Operate engine to circulate and mix coolant. Coolant level should be up to mark on expansion tank.

8. Add 30 mL per liter (4 oz per gallon) of John Deere Coolant Conditioner if John Deere COOL-GARD is not used.

9. Clean radiator and cooler condenser. Straighten any bent fins. (See Clean Grille Screens, Radiator, and Oil Cooler Condenser in General Maintenance and Inspection Section.)

RW56214A

1 AFTER initial change, service interval can be extended to 5 years or 5000 hours, if John Deere COOL-GARD is used.

AG,RF30435,2209 -19-19NOV99-3/3