Draining, Flushing and Refilling Cooling System

INITIAL change interval is 6 years or 6000 hours, provided cooling system is topped off using only John Deere COOL-GARD II ™ and premix and coolant is tested at recommended intervals.

COOL-GARD is a trademark of Deere & Company

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2. Remove de-aeration tank cap (A) slowly and when engine is cool.

NOTE: For tractors equipped with Automatic Temperature Control, temperature readout must say "HI" and key must be in RUN position. This prevents trapping old coolant in the heater.

3. For tractors equipped with Automatic Temperature Control (ATC), turn key to Run. Turn ATC controls to ON; ATC indicator must show "HI".

4. Remove three cap screws (B), then remove panel (C) beneath radiator drain valve.

5. Open radiator drain valve and drain coolant into catch pan through drain hose (D).

6. Open engine drain valve (E) and drain coolant into catch pan.

A-De-aeration Tank Cap
B-Cap Screws
C-Panel
D-Drain Hose
E-Engine Drain Valve

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8. Remove hose clamps (B) and slide hose (C) toward tractor front.

9. Remove cap screws and lift thermostat cover out of the way.

10. Remove and discard old thermostats.

11. Install cover, O-ring and gasket without thermostats. Tighten cap screws to specifications.

Specification

12. Replace previously removed radiator hoses and clamps and tube.

A-EGR Cooler Vent Plug
B-Hose Clamps
C-Charge Air Hose

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14. Remove five screws (B) and side shield.

15. Remove two screws (E) and finger guard.

16. Remove clamps and intake tube (C).

17. Remove clamps, coolant tube and hose (D).

18. Remove clamps and hose (F).

19. Disconnect line (G).

20. Remove five cap screws (H) and thermostat housing.

21. Remove and discard old thermostats.

22. Install cover, and gasket without thermostats. Tighten cap screws to specifications.

Specification

23. Replace previously removed radiator hoses, clamps, line and tube.

24. For 9.0 L and 13.5 L engines, close engine drain valve, and radiator drain valve.

NOTE: See your John Deere Dealer for recommendations on cleaning solutions.

IMPORTANT: Never pour cold water or coolant into hot engine.

25. Begin filling system with cooling system cleaning solution. When air is purged and system cleaning solution appears at the EGR port, install EGR cooler vent plug and finish filling system.

26. Install de-aeration cap, side panel and close hood.

A-EGR Cooler Vent Plug
B-Screws
C-Tube
D-Hose
E-Screws
F-Hose
G-Line
H-Screws

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CAUTION: Make sure side panel is installed and hood is closed before starting engine.

27. Start engine and run at a minimum of 1500 rpm for 15 minutes.

CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns.

Shut off engine. Only remove cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

28. Shut off engine and allow to cool.

29. Open hood, remove de-aeration cap, put drain pans in place, then open radiator and engine drain valves. Remove EGR cooler vent plug.

NOTE: For tractors equipped with Automatic Temperature Control, temperature readout must say "HI" and key must be in RUN position. This prevents trapping cleaning solution in the heater.

30. Turn heater temperature control clockwise to the full on position. For tractors equipped with Automatic Temperature Control, temperature readout must say "HI" and turn key switch on to RUN position for coolant drain, flush, refill and de-aeration process. Do not start engine.

NOTE: This is the only way to get old coolant and air out of circuit.

NOTE: See your John Deere Dealer for recommendations on cleaning solutions.

31. Close radiator drain valve and install engine drain plugs.

32. Using clean water, begin filling coolant system. When air is purged and water appears at the EGR port, install EGR cooler vent plug and finish filling the system.

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CAUTION: Make sure fan guard and side panel are installed and hood is closed before starting engine.

IMPORTANT: Never pour cold water or coolant into hot engine.

33. Close hood, start engine and run for a minimum of 1500 rpm for 15 minutes.

CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns.

Shut off engine. Only remove cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

34. Turn off engine, allow coolant to cool, then using previously listed steps, drain system.

35. Close engine drain valve and radiator drain valve.

36. Begin filling system with proper mix of coolant and distilled water or demineralized water. When air is purged and water is visible in the EGR valve port, close EGR cooler vent plug.

CAUTION: Make sure fan guard and side panel are installed and hood is closed before starting engine.

37. Start engine and run at 1500 rpm for a minimum of 15 minutes.

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CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns.

Shut off engine. Only remove cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

38. Turn off engine, allow coolant to cool, raise hood, remove side panel, then using previously listed steps, drain system.

39. Using previous steps, remove clamps, hoses, tube and braces.

2. Install new thermostats, new gasket(s) and cover. Tighten cap screws to specifications.

Specification

3. Using previously listed sequence, install hoses, clamps, tube and cap screws.

4. Install fan guard and side panel.

5. Close radiator and engine drain valves.

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CAUTION: Explosive release of fluids from pressurized cooling system can cause serious burns. DO NOT drain coolant until it has cooled below operating temperature. Always loosen radiator pressure cap or drain valve slowly to relieve pressure.

2. Remove fan shield and finger guard bracket (A).

3. Disconnect air intake temperature sensor and remove air intake tube (B).

4. Loosen top liner cooling return line (C) front and rear fittings and remove.

5. Loosen upper radiator coolant hose clamp and remove hose (D).

6. Loosen lower coolant bypass hose clamp and remove hose (E).

7. Remove cap screws (F) securing thermostat cover to thermostat housing.

8. Remove thermostat cover (G) from thermostat housing.

A-Finger Guard Bracket
B-Air Intake Tube
C-Liner Cooling Return Line
D-Upper Radiator Coolant Hose
E-Lower Coolant Bypass Hose
F-Cap Screws
G-Thermostat Cover

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10. Test each thermostat for proper opening temperature. (See your John Deere dealer.)

A-EGR Coolant Thermostat
B-Engine Coolant Thermostats

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2. Insert cover in lower coolant bypass hose and place thermostat cover in position using a new gasket or seal.

3. Install thermostats and tighten thermostat cover cap screws to specifications.

Specification

4. Lubricate O-ring for the top liner cooling return line fitting with petroleum jelly and install line. Tighten fittings (C) to specifications.

Specification

5. Tighten upper radiator hose clamp and lower coolant bypass hose clamp to specifications.

Specification

6. Install air intake tube and attach temperature sensor harness connectors.

7. Install finger guard bracket and fan shield.

8. Close radiator and engine drain valves.

IMPORTANT: Use coolant as specified in Fuel, Lubricants and Coolant section.

1. Fill high pressure coolant circuit at de-aeration tank.

2. Begin filling coolant recovery tank. When air is purged and coolant is visible, close EGR cooler vent plug.

3. Finish filling coolant recovery tank to Full Hot mark.

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NOTE: Coolant level in recovery tank will drop the first few cycles unless there is a leak.

4. With de-aeration tank cap ON and hood closed, start engine and run at idle for 1 to 5 minutes.

5. Shut off engine, raise hood, remove de-aeration tank cap. Top off high pressure circuit at de-aeration tank and reinstall cap.

6. Close hood, start engine and warm up for 15 minutes. If the coolant recovery tank loses coolant to the ground, repeat previous step and top off until it does not. Loosing coolant to the ground indicates air in high pressure circuit is being discharged through coolant recovery tank.

7. Shut off engine and allow to cool. Observe coolant level dropped below Full Hot in the recovery tank.

NOTE: If coolant level did not drop below Full Hot , there is a leak in cooling system that could lead to engine damage.

8. Monitor coolant recovery tank level for the next two days of use. Refill coolant recovery tank as required.

NOTE: It is normal for level to go down with the first few cycles and then range somewhere between Full Hot and Full Cold.

NOTE: It is normal for de-aeration tank to be partially full of air when cap is removed and system completely de-aerated. When inspecting tank, if it is at least half full, do not add additional coolant. Topping off tank may cause coolant to be expelled onto the ground and/or cavitation of water pump.

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2. Check radiator for leaks or damage.

3. With engine cooled down, slowly turn de-aeration tank cap (A) to relieve pressure. Remove cap.

4. Attach Surge Tank Adapter Cap and Radiator Pressure Tester to filler neck. (See your John Deere dealer for testing equipment.)

5. Pressurize system.

Specification

6. If pressure drops immediately, or will not build, have John Deere dealer check and repair system.

7. Test and/or replace de-aeration cap whenever cooling system is flushed.

NOTE: Cap gasket should be visually checked for sealing effectiveness. A good functioning gasket should have the imprint of the mating surface with no apparent scratches or leak paths. If gasket is damaged, replace cap and test new cap.

NOTE: Cap should hold pressure within specifications. Relief occurs at top of range.

NOTE: Replace cap if test result is out of specifications.

8. Pressurize cap.

Specification

9. Remove tester and install radiator cap.

10. Close hood.

A-De-aeration Tank Cap

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