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CCS fan motor leaks.
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Case drain line crimped, not connected to low pressure port, or connected to wrong port with high back-pressure.
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Repair fan motor.
To avoid future failures, be sure to connect drain line to low-pressure (sump) return on tractor or place hose in storage position. Case drain must have less than 172 kPa (1.72 bar) (25 psi).
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CCS fan motor seal leaking.
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Replace seal. See your John Deere dealer.
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Case drain line pulled out of coupler on tractor.
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Check hose routing of hydraulic hoses across hitch. Ensure case drain is properly attached to tractor. Repair fan motor.
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| Symptom |
Problem |
Solution |
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CCS fan not turning.
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Check valve installed backwards.
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Switch check valve orientation.
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Rockshafts are up.
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Lower rockshafts.
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Fold switch on rockshaft malfunctioning.
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Check for continuity with leads down.
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SCV not in continuous detent position.
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Place SCV in retract detent position.
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Low hydraulic oil level.
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Check and fill reservoir.
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Tractor control valve return line not open.
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Cycle control lever in opposite direction momentarily.
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CCS fan motor seal leaking.
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Replace seal. See your John Deere dealer.
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Faulty CCS fan motor.
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Repair or replace motor. See your John Deere dealer.
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Faulty CCS flow control valve.
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Repair or replace valve. See your John Deere dealer.
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Row unit switch is depressed.
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Lower machine to ground and adjust switch as needed.
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Row unit switch faulty.
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Replace switch.
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Flow control valve incorrectly set.
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Increase flow control setting.
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Return hose not fully engaged in SCV outlet.
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Check connections. Reverse hoses if necessary to prevent pull out.
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CCS fan vibrates.
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Dirty fan blades.
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Clean fan.
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Broken fan blades; fan out of balance.
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Replace fan assembly.
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CCS fan surges.
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Flow control valve incorrectly set.
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Adjust flow control valve or replace.
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Premature CCS fan motor seal failure.
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CCS case drain not connected to sump.
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Connect case drain hose to sump. Case drain must have less than 172 kPa (1.72 bar) (25 psi).
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| Symptom |
Problem |
Solution |
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Tank pressure too low.
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CCS pressure gauge was not zeroed.
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Zero CCS pressure gauge.
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CCS pressure gauge not connected or damaged.
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Connect or replace hose.
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Tractor flow control set too low.
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Increase valve setting.
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Faulty CCS control valve.
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Repair or replace valve. See your John Deere dealer.
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Machine flow control valve set incorrect.
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Increase valve setting.
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Tractor pressure too low.
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Check and repair tractor hydraulic system. See your John Deere dealer.
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CCS fan motor seal leaking.
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Replace seal. See your John Deere dealer.
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Faulty CCS fan motor.
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Repair or replace motor. See your John Deere dealer.
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CCS fan turning backward.
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Check valve removed from return line. Check and correct hose connections to tractor.
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Excessive air leakage from tank.
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Install lids.
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Pressure gauge broken.
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Repair or replace gauge.
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Pressure gauge does not zero.
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Gauge not adjusted.
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Zero gauge. See ZEROING CCS FAN PRESSURE GAUGE in Central Commodity System section.
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Gauge damaged.
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Replace gauge.
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Moisture in gauge.
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Dry out gauge.
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Suction hose plugged.
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Clean or replace hose as needed.
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| Symptom |
Problem |
Solution |
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CCS fan turning on and off while going through field.
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Frame height too high causing row unit switch to open and close.
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Adjust frame height. See ADJUSTING FRAME HEIGHT in Preparing Machine section.
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CCS on/off push button switch out of adjustment.
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Adjust row unit switch. See SETTING CCS ROW UNIT FAN SWITCH in Service-As Required section.
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CCS Fan/Agitator will not engage when planter lowered.
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Inspect F3 10 amp fuse in frame control harness.
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Replace fuse.
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Check pins 1 and 7 on tractor/planter 7 pin connector for 12 volts.
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See your John Deere dealer.
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Check CCS fan solenoid for magnetism.
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See CHECKING SOLENOIDS in Service section.
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Check CCS row unit push button switch (left center row unit on parallel arms).
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Adjust switch. See SETTING CCS ROW UNIT FAN SWITCH in Service-As Required section.
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Roller switch on right rockshaft closed/improperly adjusted.
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Adjust switch. See SETTING ROLLER ROCKSHAFT SWITCH in Service-As Required section.
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Check K31 relay.
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Replace as needed.
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