Draining, Flushing and Refilling Cooling System—15.0 L Engine

IMPORTANT:

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Safety—Explosive Release of Fluids

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Turn Key To Run Position

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Cab Temperature Setting To Highest Setting

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Remove De-aeration Caps (Left Side View)

A - Run Position

B - Cab Temperature Setting

C - De-aeration Tank Cap

D - Radiator Pressure Cap

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. After initial service, the SCHEDULED interval (2 years or 2000 hours) can be extended up to 6 years or 6000 hours depending on coolant used and if coolant is tested at recommended intervals. Follow recommendations in ”Drain Intervals for Diesel Engine Coolant” in Fuels, Lubricants and Coolant section of this manual.

NOTE: When service is performed on cooling system, make sure to check coolant daily for the next three days of operation. The most effective way to check coolant level is when tractor engine is cool. If coolant is low, fill de-aeration tank to mark on bracket.

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.

1. Park tractor, turn ignition key to OFF and allow radiator to cool.

   NOTE: Throughout the draining, flushing and filling procedure, set cab temperature to highest setting (B) and leave set to the highest setting to ensure that fluids are drained from heating/Air conditioning unit. If either cab temperature setting (B) is not set to highest setting or ignition key is not turned to Run, system will not completely drain.

   See your John Deere™ dealer for recommendations on cleaning solutions.

   NOTE: When refilling coolant tanks, fill through de-aeration tank (C) only.

2. Turn key to RUN Position (A), then set cab temperature setting (B) to highest setting.

3. Open hood and remove de-aeration tank cap (C).

4. NOTE: Use a coolant catch pan large enough for a capacity of 83 L (21.9 gal).

   
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   Radiator Drain

   
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   Front Radiator Drain

   A - Radiator Hose Drain Valve

   B - Radiator Drain Valve

   Open radiator hose drain valve (A) and drain coolant into catch pan.

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5. Attach hose and direct into a catch pan and open radiator drain valve (B) and drain coolant.

   NOTE: Additional coolant (2-3 L or 3/4 gal.) will be inside radiator even after draining radiator hose through radiator hose drain valve.

6. Allow radiator and engine to drain.

   
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   Cap Screws

   
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   Nuts and Shield

   
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   A/C Compressor

   A - Shield Cap Screws (3 used)

   B - Nuts (2 used)

   C - Shield

   D - A/C Compressor Cap Screws (3 used)

   E - A/C Compressor

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7. Remove auxiliary drive belt. See Replace Auxiliary Drive Belt- 15.0 L Engine in 1500 Hour service of this Operator’s Manual to see steps to remove belt.

8. Remove shield cap screws (A) and nuts (B) and remove shield (C).

9. Remove air conditioning compressor cap screws (D) and air conditioning compressor (E).

10. 
    TS281-UN-15APR13

    Safety—Explosive Release of Fluids

    
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    Thermostat Cover

    
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    Remove Thermostat

    A - Thermostat Cover

    B - Cap Screws - 1 3/8”

    C - Cap Screw - 3 1/2”

    D - Cap Screw - 5”

    E - Thermostat Gasket

    F - Thermostat

    Remove 1 3/8” cap screws (B), 3 1/2” cap screw (C) and 5” cap screw (D) and thermostat cover (A).

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11. Remove thermostat gasket (E).

12. Remove old thermostat (F) and clean sealing area.

    NOTE: During draining, filling, and flushing, coolant system will not have thermostat installed.

13. Install new gasket and cover. Tighten cap screws to specifications.

    Item	Measurement	Specification
    Thermostat Cover Cap Screws	Torque	48 N·m (35 lb-ft)

14. Replace air conditioning compressor.

15. Replace shield, cap screws and nuts.

16. Close engine drain valve, and radiator drain valve.

17. Dispose of old coolant in accordance with local laws and ordinances.

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

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

18. Fill high pressure coolant system at de-aeration tank with cooling system cleaning solution.

19. Install de-aeration cap and close hood.

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

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

21. Shut off engine and allow cleaning solution to cool.

22. Make sure temperature knob is turned to highest setting, then turn key to ignition Run position.

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

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

23. Open hood, remove de-aeration cap, put drain pans in place, then open radiator and engine drain valves.

24. Allow cooling system to completely drain.

25. Close radiator hose drain valve and radiator drain valve.

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

    
    TS281-UN-15APR13

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26. Dispose of cleaning solution in accordance with local laws and ordinances.

27. Fill high pressure coolant system at de-aeration tank with clean water.

28. Install de-aeration cap and close hood.

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

30. Shut off engine and allow water to cool.

31. Make sure temperature knob is turned to highest setting. then turn key to Run.

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

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

32. Open hood, remove de-aeration cap, put drain pans in place, then open radiator and engine drain valves.

33. Allow radiator to drain, then remove left side panel and diverter.

34. Loosen clamp and slide hose back, remove three cap screws, thermostat cover, and gasket.

35. Inspect sealing area to ensure it is clean.

36. Apply light coat of RTV silicone sealant to new gasket.

37. Install new thermostat, new gasket and cover. Tighten cap screws to specifications.

    Item	Measurement	Specification
    Thermostat Cover Cap Screws	Torque	73 N·m (54 lb-ft)

38. Replace previously removed hose, clamps, diverter and left front side panel.

39. Close engine drain valve and radiator drain valve.

40. Dispose of drain clean water in accordance with local laws and ordinances.

41. Fill high pressure coolant system at de-aeration tank with new coolant solution. Fill to max cold line and top off immediately after initial fill.

    Cooling System Capacity:

    15.0 L Cummins® Final Tier IV/ Stage IV .............. 83 L (21.9 gal)

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

42. Install de-aeration cap, install front side panels, close hood, start engine and run for a minimum of 1500 rpm for 15 minutes.

    NOTE: Coolant may seep out of the de-aeration tank overflow vent as air is purged from the coolant system.

    Level may change when tractor is running or during the next few cycles.

    It is highly recommended the cooling system is checked for leaks after draining, flushing and refilling to ensure tractor performance. Consult your John Deere™ Dealer for procedure and appropriate tools.

43. Monitor coolant level for next several hours/overnight. Refill De-aeration tank as required.