Vari-Cool™ Fan Drive and Belt - 13.5L Final Tier 4 or Stage IV Engine

Avoid damage to Vari-Cool fan drive. Check drive assembly and belt every 500 hours or annually, whichever occurs first.

1. Raise engine hood. See Open Hood in Service - General section of this Operator’s Manual.

2. Remove left-hand engine finger guard. See Remove Finger Guards in Service - General section of this Operator’s Manual.

3. Remove left-hand diverter panel. See Remove Diverter Panels in Service - General section of this Operator’s Manual.

4. Check fan drive assembly for leaking grease or hydraulic oil. If leakage is found, see your John Deere dealer

   Damaged Vari-Cool™ components may generate a Diagnostic Trouble Code (DTC). If Diagnostic Trouble Codes for Vari-Cool™ fan drive are displayed, see your John Deere dealer.

5. Operating with fan belt less than specified width may generate Diagnostic Trouble Code (DTC)

   
   RXA0157890-UN-15FEB17

   Vari-Cool Fan Belt

   Measure width of fan belt (A). Replace belt when width is 36 mm (1.4 in) or less. See Vari-Cool Fan Belt in Service - Change section of this Operator’s Manual.

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6. Check fan belt (B) and replace if damaged or excessively worn. See Vari-Cool™ Fan Belt in Service - Change section of this Operator’s Manual.

   While Vari-Cool™ fan drive is accessible, perform fan drive lubrication. See Vari-Cool™ Fan Drive - 13.5L Final Tier 4 or Stage IV Engine in Service - Lubricate section of this Operator’s Manual.

7. Reinstall diverter panel and tighten cap screws.

   Diverter Panel Cap Screws Specification	Torque	20 N•m (177 lb•in)

8. Close and secure hood.