Servicing Cooling System (Liquid Cooled Engines)

Checking Coolant Level

1. Park machine safely on a level surface. (See Parking Safely in the SAFETY section.)

2. Raise hood.

3. Check coolant level:

   NOTE: Graphic shows the coolant level marks at the front side of the coolant recovery tank. Another set of coolant level marks is visible at the rear of the recovery tank, in front of the battery.

   • 
     MXAL46399-UN-05APR13

     If engine is hot, coolant should be up to “H” mark (A) on recovery tank.

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   • If engine is cold, coolant should be at “L” mark (B) on recovery tank.
   
   

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4. Remove cap (C) from recovery tank if coolant is low. Add ethylene glycol antifreeze (without stop-leak additive) and water in a 50/50 ratio to bring coolant up to proper level.

5. Install and tighten recovery tank cap.

6. Clean debris from air intake screens and radiator.

7. Check condition of hoses. Check for leaks or loose connections.

Draining Cooling System

1. Park machine safely on a level surface. (See Parking Safely in the SAFETY section.)

2. Allow engine to cool.

3. Raise hood.

4. 
   MXAL46400-UN-05APR13

   Loosen and remove radiator cap (A) slowly to release all pressure.

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5. NOTE: Removal of the cylinder head drain plug (B) will allow most of the coolant to be drained from the engine. Removal of the radiator hose at the water pump inlet will allow additional coolant to be drained, if necessary.

   
   MXAL46401-UN-05APR13

   Place a suitable container under the drain plug (B) at the left cylinder head, remove drain plug and drain coolant.

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6. Install drain plug after coolant has drained completely.

7. Install radiator cap, or flush the cooling system, if necessary.

Flushing Cooling System

1. Remove radiator cap.

2. Fill cooling system with clean water and John Deere Cooling System Cleaner, or John Deere Cooling System Quick Flush or an equivalent. Follow directions on the can.

3. Install and tighten radiator cap.

4. Start and run engine until it reaches operating temperature.

5. Stop the engine.

6. Drain cooling system immediately before rust and dirt settle.

7. Install hose and clamp.

Filling Cooling System

1. Allow radiator to cool.

2. Remove radiator cap.

3. Fill cooling system. Coolant capacity is 3.0 L (3.2 qt), including the recovery tank.

4. Install and tighten radiator cap.

5. Run engine until it reaches operating temperature.

6. Stop the engine.

7. Check coolant level while engine is hot and after cooling to ensure proper level in recovery tank. If necessary, fill recovery tank to proper level.

8. Tighten hose clamps if necessary.

9. Lower the hood.