Hi All,
last week, I had the fun of going elk hunting in the mountains of Colorado and pulled my 5th wheel up to the hunting area.
On the trip there, everything was fine until I got off the main road and was driving on the gravel up some small inclines. The engine coolant temperature kept riging until it pinned at 240 and the check guages light came on. After letting it cool down, I got up the road a little farther and it did the same thing. Some diagnosis showed that the fan was not engaging, even with the manual override switch under the dash.
Once we got cam set up, I did some diagnosis with my circuit tester. The wiring going up to the fan was working fine. It would supply 12 volts to the fan. An ohm meter on the fan showed an open connection and applying 12 volts to the fan directly didn't do anything.
Luckily, one of the guys with us had a satellite phone (cell phones don't work in the middle of no-where) and I called Horton. They said it sounded like a clutch problem in the fan itself, but there was a way to manually engage the fan to get me out without overheating problems.
You can thread 3 M6 allen head screws with 1 thread per mm and 20mm long into some holes on the engine facing side of the fan body and manually lock up the fan. We needed to cut a little bit off of the allen wrench we were using to be able to get in easily and turn the screws.
This will keep you going. Now it's time to remove the fan and try to figure out what's wrong with it. My guess is an electrical problem of some sort like a loose wire.
I'll let you know what I find, but thought the idea of carrying those 3 screws and an allen wrench with you might save one of you guys in a pinch too.
--Phil
last week, I had the fun of going elk hunting in the mountains of Colorado and pulled my 5th wheel up to the hunting area.
On the trip there, everything was fine until I got off the main road and was driving on the gravel up some small inclines. The engine coolant temperature kept riging until it pinned at 240 and the check guages light came on. After letting it cool down, I got up the road a little farther and it did the same thing. Some diagnosis showed that the fan was not engaging, even with the manual override switch under the dash.
Once we got cam set up, I did some diagnosis with my circuit tester. The wiring going up to the fan was working fine. It would supply 12 volts to the fan. An ohm meter on the fan showed an open connection and applying 12 volts to the fan directly didn't do anything.
Luckily, one of the guys with us had a satellite phone (cell phones don't work in the middle of no-where) and I called Horton. They said it sounded like a clutch problem in the fan itself, but there was a way to manually engage the fan to get me out without overheating problems.
You can thread 3 M6 allen head screws with 1 thread per mm and 20mm long into some holes on the engine facing side of the fan body and manually lock up the fan. We needed to cut a little bit off of the allen wrench we were using to be able to get in easily and turn the screws.
This will keep you going. Now it's time to remove the fan and try to figure out what's wrong with it. My guess is an electrical problem of some sort like a loose wire.
I'll let you know what I find, but thought the idea of carrying those 3 screws and an allen wrench with you might save one of you guys in a pinch too.
--Phil