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Old 10-24-2021, 06:46 AM   #1
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Replacing Fan motor solenoid valve

The fan on my radiator fan 2 speed motor is not going to high speed. Spartan tech suggested I replace the solenoid valve. Apparently there is no way to test it. It's my understanding this solenoid valve selects low or high speed depending on the voltage to the solenoid. If 12 volts it goes to low, with no voltage it allows more hydraulic pressure to the motor so the fan spins at high speed.

I removed the electrical connection to the fan solenoid valve so it should go to high speed but doesn't.

Any words or wisdom on how to change out this solenoid valve?
Leesburg, FL
'07 American Tradition 40Z Cummins 400 ISL
Towing a '14 Honda CRV
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Old 10-27-2021, 01:13 PM   #2
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Somebody has got to have replaced this solenoid valve. I'm just wondering if this is something I can do my self.
Leesburg, FL
'07 American Tradition 40Z Cummins 400 ISL
Towing a '14 Honda CRV
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Old 11-12-2021, 06:52 AM   #3
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Posts: 2,670
On older Coaches that Hydro Valve is located on the Priority Block and the Solenoid diverts fluid to the fan and power Steering activated by the Air Temp in the CAC. - remove the Solenoid and note the numbers as Spartan used several suppliers and the cost is very reasonable .
I just replace one on mine and This Comany was the supplier at the time in 1992.
Brownsburg Indiana
1992 American Eagle-8.3C-450hp
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fan, motor, solenoid, valve

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