Posted by Geo-TH,In on November 16, 2022 at 03:53:13 from (50.102.25.105):
I bought a Jubilee that was converted to 12v and the wiring was a mess. I rewired it so the ammeter would work. In the process I installed a 30a circuit breaker to protect the 10g wire connected to the alternator. I used 14g wire for the lights and installed a 15 amp fuse. I used 14g wire for the ignition coil and gas solenoid and installed a 15 amp fuse. All worked just fine for about 15 years until yesterday. The 15 amp fuse going to the ignition coil and gas solenoid blew. I installed a new 15 amp fuse. The tractor ran for about 5 seconds and the fuse blew again..
The gas solenoid always clicks when power is applied. The gas solenoid wasn't shorted to ground. The gas solenoid was working fine. I measured the solenoid amps which should have been close to 2 amps. Something happened to the coil causing the gas solenoid to use 18 amps.
Go figure, something can work and still be bad.. An ohmmeter is the least accurate meter and only tells me there is a path for current. Measuring the current told me the rest of the story..
This is the second time this year a coil of wire has gone bad. The coil on my central AC compressor contactor had the same problem. It was using 7 amps instead of 1 amp blowing a 3 amp fuse.
I'm posting this to let people know an ohmmeter isn't the answer when troubleshooting a coil of wire. Measure the amps..
I ordered a new gas solenoid and plan to install a separate 5 amp fuse going to the solenoid to make the troubleshooting easier.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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