![]() |
horton engine fan - Printable Version +- Wanderlodge Gurus - The Member Funded Wanderlodge Forum (http://www.wanderlodgegurus.com) +-- Forum: Yahoo Groups Archive (/forumdisplay.php?fid=61) +--- Forum: WanderlodgeForum (/forumdisplay.php?fid=63) +--- Thread: horton engine fan (/showthread.php?tid=7538) |
horton engine fan - racetrash - 12-29-2008 01:27 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 horton engine fan - Chuck Wheeler - 12-29-2008 05:52 If your fan control is like ours it will engage if there is not power (Failsafe?) If I turn the ignition on when the 3208 is cold thereis power on the air valve that controls the fan.. The engine does not need to be running. I am assuming that yours has a air clutch and not an electric clutch. When I got our 82 I had to replace the wiring as it was so old and deteriorated that the fan operation was erratic.
- Chuck Wheeler-
1982 FC 31SB Fort Worth TX
From: WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of racetrash Sent: Monday, December 29, 2008 7:28 AM To: WanderlodgeForum@yahoogroups.com Subject: [WanderlodgeForum] horton engine fan 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 horton engine fan - freewill2008 - 12-29-2008 14:41 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 > horton engine fan - racetrash - 12-30-2008 01:29 --- In WanderlodgeForum@yahoogroups.com, "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 > > > i will have the rad out today, as the air control is behind it. the relay is behind the driver side panel and will go from there...thanks and i will let you know the results horton engine fan - Harold Prescott - 12-30-2008 02:48 You may want to check the heat sending unit on the front of the engine block. Harold Prescott '85 FC35 Quartzsite --- 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 > |