horton engine fan

[freewill2008]

Pete - The Horton air clutch is a retrofit. Originally the sensor
turned on an electric clutch directly. Now the sensor turns on the
electric-to-air relay which turns on the Horton air clutch by way of
the relay.

If the clutch is constantly getting air (staying on) then the relay may
be constantly getting power, or the relay could have gone south.

To test the relay, disconnect the wire(s) from one side of the relay
and see if the fan engages. If the fan engages, then the relay is bad.

If the fan does not engage then the problem is electrical. The power
could get to the relay from the sensor or from the bypass switch.
Disconnect the wires from the sensor and the bypass switch one at a
time to determine where the power is coming from. When you learn how
power is getting to the relay, look for the reason: Bad bypass switch
and wiring, or bad sensor and wiring.

Its a process of elimination. Best of luck.

Bob Griesel '84 FC31 WLII WA

--- In WanderlodgeForum@yahoogroups.com, "racetrash"
wrote:
>
> on our 83 fc, 3208 cat, the rad fan is always on now after redoing
the
> radiator and replacing the belts. looks like there is a sensor on the
> front of the motor, which goes to a relay, also goes to the overide
> switch below steering wheel. any ideas ?? thanks, pete
>