Checking Wing-Fold Operation—9-Standard Machine

1. CAUTION:

   
   N39547-UN-06OCT88

   To prevent serious injury or death to you or others:
   • Make sure air has been properly bled from wing-fold hydraulic system.
   • Keep all persons away from machine when raising and lowering wings.
   • Always locate machine on level ground when raising and lowering wings.
   • Never raise or lower wings when moving.
   
   

   
   N48108-UN-17DEC01

   John Deere 8000 and 9000 Series Tractors

   A - SCV II Lever

   Place tractor transmission in PARK and/or set brakes, then start engine and pull back on SCV II lever (A) to retract wing-fold cylinders.

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2. Move SCV II lever back and forth several times while observing operation of machine. Wings should raise when lever is pulled back and lower when lever is pushed forward. If action is reversed, reverse hose connections in SCV II hydraulic coupler.

   If wing-fold does not operate smoothly, air may be trapped in cylinders or hoses. (See INSTALLING AND BLEEDING CYLINDERS in Service section.) If after bleeding, machine still does not operate properly, see your John Deere dealer.

3. After attaching and cycling cylinders, check tractor hydraulic oil reservoir. Add oil if necessary.