OMA88864

Symptom	Problem	Solution
CCS fan motor leaks.	Case drain line crimped, not connected to low-pressure port, or connected to wrong port with high backpressure.	Repair fan motor. To avoid future failures, verify drain line is connected 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).
	CCS fan motor seal leaking.	Replace seal. See your John Deere dealer.
	Case drain line pulled out of coupler on tractor.	Check hose routing of hydraulic hoses across hitch. Verify that case drain is properly attached to tractor. Repair fan motor.

CCS fan not turning.	SCV not in continuous detent position.	Place SCV in “Retract” detent position.
	Low hydraulic oil level.	Check and fill reservoir.
	Tractor control valve return line not open.	Cycle control lever in opposite direction momentarily.
	CCS fan motor seal leaking.	Replace seal. See your John Deere dealer.
	Faulty CCS fan motor.	Repair or replace motor. See your John Deere dealer.
	Faulty CCS flow control valve.	Repair or replace valve. See your John Deere dealer.
	Row unit switch is depressed.	Lower machine to ground and adjust switch as needed.
	Row unit switch faulty.	Replace switch.
	Flow control valve incorrectly set.	Increase flow control setting.
	Return hose not fully engaged in SCV outlet.	Fully engage hoses in SCV outlet.
	If auxiliary hydraulics system provided, fan switch in the “Off” position.	Turn fan switch to “On” position. Verify purge switch is in “Plant”.

CCS fan vibrates.	Dirty fan blades.	Clean fan.
	Broken fan blades; fan out of balance.	Replace fan assembly.

CCS fan surges.

Flow control valve incorrectly set.

Adjust flow control valve or replace.

Premature CCS fan motor seal failure.

CCS case drain not connected to sump.

Connect case drain hose to sump. Case drain must have less than 172 kPa (1.72 bar) (25 psi).

Tank pressure too low.	CCS pressure gauge was not zeroed.	Zero CCS pressure gauge.
	CCS pressure gauge hose not connected or damaged.	Connect or replace hose.
	Tractor flow control set too low.	Increase valve setting.
	Faulty CCS control valve.	Repair or replace valve. See your John Deere dealer.
	Machine flow control valve set incorrect.	Increase valve setting.
	Tractor pressure too low.	Check and repair tractor hydraulic system. See your John Deere dealer.
	CCS fan motor seal leaking.	Replace seal. See your John Deere dealer.
	Faulty CCS fan motor.	Repair or replace motor. See your John Deere dealer.
	CCS fan turning backward.	Correct hose connections to tractor.
	Excessive air leakage from tank.	Correctly install tank lids.
	Pressure gauge broken.	Repair or replace gauge.

Pressure gauge does not zero.	Gauge not adjusted.	Zero gauge. See ZERO PRESSURE GAUGE in Service and Adjustments section.
	Gauge damaged.	Replace gauge.
	Moisture in gauge.	Dry out gauge.

CCS fan turning on and off while going though the field.	Frame height too high causing the row unit switch to open and close.	Adjust frame height. See ADJUST FRAME HEIGHT in Service and Adjustments section.
	Row unit fan switch misadjusted.	Adjust switch. See SET CCS ROW UNIT FAN SWITCH in Service and Adjustments section.

CCS Fan-Agitator does not engage when planter lowered.	Inspect F3 10 amp fuse in frame control harness.	Replace fuse.
	Check pins 1 and 7 on tractor to planter 7 pin connector for 12 volts.	See your John Deere dealer.
	Check CCS row unit switch (left center row unit on parallel arms).	Adjust switch. See SET CCS ROW UNIT FAN SWITCH in Service and Adjustments section.
	Check K31 relay.	Replace as needed (relay is tie strapped to harness behind valve block).

OUO6435,0001F5B-19-20090515