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I had a problem with my 2005 dong feng 204a that might transfer to other brands. I started the tractor yesterday and noticed it was charging weirdly, pulsing on and off strangely. So I put it in the barn and started looking for loose connections and other high resistance opens . As I was moving the wires on the voltage regulator I saw the voltmeter charge and then not as I moved the wires , I determined that it was not the connectors but the regulator itself . The voltage regulator was peened together and not poured with epoxy , so it was easily pried open. Both sides of the in and out of the regulator solder connections were cracked a simple solder job all fixed. Ordered new one from ebay will use this until new one comes in then keep as spare.
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got the new style regulator installed and works perfect it is epoxy poured instead of just a pressed together seal so maybe it will last longer. I noticed that the start switch is very sluggish returning to the run position after the engine start is used . I seen that the ford tractor d5nn11n501a switch has been suggested as a replacement has anyone had experience using that switch over the OEM and what do you think and any suggestions? thanks Dave
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Hi Dave,
No experience with the Ford switch but have saved the number just in case. My Jinma switch is working just fine after 14 years (I know I just jinxed it!)
I would suggest trying to spray some circuit cleaner into the switch. Likely just a little dirty inside. Could be the switch itself or just the key tumblers that are gummed up.
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well I switched out the switch and it is not ideal but doable . The switch is labeled it has a heater section and it does it is just that it is only hot when it is in the start mode. I did not want that. So my tractor has the lights wired threw the accessories part of the circuit not off the switch directly. So I added a start button to the light portion of the switch so when I move the key to the lights on position I can then use the push switch to heat the glow plugs, works well, just a little more modification that I thought I would have to do, but the switch is rated at 35 amps so I think it should work out . Oh I had to add the button because the heaters would not turn off without interrupting the circuit just in case you were wondering.
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yeah I went the other way I was having trouble with the starter so I added a relay to take the amp draw off the switch and put the load closer to the battery. I do not understand what wiring standards the Chinese use but they need to change it. To small of wire for the amp loads they are designed to run.
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Agreed. The wiring is a weak spot on our little tractors. Components are under sized and of poor quality. Fortunately for us there isn’t much wiring and it is really simple and easy to get at.
My neighbor bought a fancy smancy Branson with a cab and all the bells and whistles. It developed a short in the wiring and he can’t turn on the lights without blowing a fuse. Spent big $ on a shop manual that is probably the best manual I have ever seen. Includes color pictures of many components. Wires are of good quality and connectors are too. Problem is he can’t get to much of wiring without tearing half the tractor apart. Since the local dealer went under he is going to have to learn to fix it himself or pay big big $$$ to have a short circuit fixed. Glad I’m not him.
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