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.
| Symptom | Problem | Solution |
|
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.
|
| |
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.
|
|
|
LD45720,00005AF-19-20120209
|
|