Troubleshoot Fan Assembly

NOTE: On some tractors, fan speed can surge when warning lights are flashing. This usually happens on tractor with electro-hydraulic controls, but can occur with other control systems. This is not considered a problem as flashing warning lights are normally turned OFF when seeding.

Fan motor leaks.

Case drain line crimped, not connected to low-pressure port, or connected to wrong port with high back-pressure.

Repair fan motor.

To avoid future failures, be sure to connect drain line to low-pressure (sump) return on tractor.

Fan not turning.

Low hydraulic oil level.

Check and fill reservoir.

Pressurized return line.

Reverse hose connections to tractor.

Selector valve set for AUGER.

Push valve handle in for FAN operation.

Tractor control valve return line not open.

Cycle tractor control lever in opposite direction momentarily.

Connect hoses so fan turns in proper direction when SCV lever is held in forward position.

Faulty selector valve.

Repair or replace valve. See your John Deere dealer.

Fan motor seal leaking.

Replace seal. See your John Deere dealer.

Faulty fan motor.

Repair or replace motor. See your John Deere dealer.

Fan vibrates.

Dirty fan blades.

Clean fan.

Broken fan blades; fan out of balance.

Replace fan assembly.

Fan speed too slow.

Tractor flow control set too low.

Increase valve setting.

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Tractor pressure too low.

Check and repair tractor hydraulic system. See your John Deere dealer.

Faulty selector valve.

Repair or replace valve. See your John Deere dealer.

Fan motor seal leaking.

Replace seal. See your John Deere dealer.

Faulty fan motor.

Repair or replace motor. See your John Deere dealer.

Plugged air hoses or manifolds.

Fan turning backward.

Check and correct hose connections to tractor.

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