My 4020 has a 12 volt conversion. It would never start from the push button, so i would jump it at the starter without any problems. However, last year i replaced the push button switch and wired it directly to the starter as my wiring on the tractor has been bastardized in the past. The pushbutton switch works great, until the voltage gets a little low. Then it welds the contacts in the solenoid and i have to disconnect both batteries to make the starter stop spinning. I have welded 3 solenoids in the last year. Im ready to go back to jump starting instead of using the pushbutton. Any suggestions why the pushbutton is causing this?
The last act I performed that seems to have stopped the problem was to lengthen (strengthen) the return spring inside of the solenoid. Working ok for a year and a half now... I strongly recommend the battery isolator switch...
@@zeketheantiquefreak8518 I’ve run into them before and when you don’t know they are there you can beat your head against the wall for a while. It’s worth checking since it seems it was a common problem on those tractors with the 24v system.
I do have a 20 amp fuse in the harness, between the positive terminal on the left hand battery and the instrument/control panel. Could this have replaced an original 'fusible link'? It has never blown and indicator lights, fuel sender, etc. work properly.
@@zeketheantiquefreak8518 that’s probably not it. I’ve been doing some digging and there seems to be as many causes as there are tractors made. To start with the basics, have you load checked the batteries lately? Low voltage can cause it in a 24v system. From there I’d start following wires to check continuity and make sure nothing is grounding out that shouldn’t be. I’m inclined to believe there is a bad wire somewhere or bad connection that is messing up the current, without having the tractor in front of me though it’s hard to give specifics.
My 4020 has a 12 volt conversion. It would never start from the push button, so i would jump it at the starter without any problems. However, last year i replaced the push button switch and wired it directly to the starter as my wiring on the tractor has been bastardized in the past. The pushbutton switch works great, until the voltage gets a little low. Then it welds the contacts in the solenoid and i have to disconnect both batteries to make the starter stop spinning. I have welded 3 solenoids in the last year. Im ready to go back to jump starting instead of using the pushbutton. Any suggestions why the pushbutton is causing this?
The last act I performed that seems to have stopped the problem was to lengthen (strengthen) the return spring inside of the solenoid. Working ok for a year and a half now... I strongly recommend the battery isolator switch...
Does it have a slow burning fuse able link in the harness? My friend says they would partially burn out and restrict voltage and burn up the contacts.
Oh, dear. I have not heard of such a part... I wonder if a parts breakdown would show it. Thanks for the 'heads up'.
@@zeketheantiquefreak8518 I’ve run into them before and when you don’t know they are there you can beat your head against the wall for a while. It’s worth checking since it seems it was a common problem on those tractors with the 24v system.
@@bulldogger1987 Best lead I have so far...
I do have a 20 amp fuse in the harness, between the positive terminal on the left hand battery and the instrument/control panel. Could this have replaced an original 'fusible link'? It has never blown and indicator lights, fuel sender, etc. work properly.
@@zeketheantiquefreak8518 that’s probably not it. I’ve been doing some digging and there seems to be as many causes as there are tractors made. To start with the basics, have you load checked the batteries lately? Low voltage can cause it in a 24v system. From there I’d start following wires to check continuity and make sure nothing is grounding out that shouldn’t be. I’m inclined to believe there is a bad wire somewhere or bad connection that is messing up the current, without having the tractor in front of me though it’s hard to give specifics.