VH4D Wisconsin Update

First thanks to all for helping with the timing of this thing really helped a lot. Sent the Mag out to get rebuilt and waiting for it to come in so I can have another stab at bench starting this thing before installing in the tractor, I need to rewire everything but having a difficult time finding THE CORRECT wiring diagram. I have several books and manuals on the machine/engine but everything I find on-line and so forth shows a diagram with a coil I have a magneto so how can I figure out the wiring? I know the mag makes it"s own power and only gets a negative wire attached for killing the engine/ Can I use the wiring diagram that shows a coil? what do I change on that diagram to work with my situation? Thanks for any help

Your mag doesn't require any wiring other than the kill wire for stopping the engine and the plug wires from the mag's cap to your plugs.

You will need battery cables from your battery to your starter. You may have a starter solenoid on that engine. Hal

Here"s a couple things that I can"t seem to figure out unless it"s basic stuff and I"m over thinking?

1. What does the negative wire from the mag hook up to the starter switch or negative battery terminal and starter switch?

2. I do have a silinoid and I do have positive and negative marked on it , but in some fashion the starter, silinoid, starter switch and battery have an order of installation. I just don"t want to blow anything else like I did my mag.

3. I can"t believe there isn"t a wiring diagram somewhere showing this? I spent a few hours Friday again looking and everyone shows a coil type? I wish I could draw a diagram showing a starter switch, silinoid, starter, magneto, battery and someone could draw in the connections for me.

4. Mag came in but came to my office instead of my house, thanks to my auto signature on my email, no big deal but office is shut down until Monday so looks like next weekend for bench start.

5. For bench starting I didn"t get a whole lot of answers in the stand alone engine forum , I was simply grounding the engine, and touching the starter with a battery jumper, does that sound safe? I would rather have the wiring temperarly ran but the wiring thing is a problem?

Scott.

The wire from the Mag goes nowhere except that when you want to stop the engine; then it goes to any ground point.
I wonder if somebody replaced your engine with one that had a magneto instead of what should have been a distributor. Battery ignition was pretty much standard on skid steers applications.

Do not hook any wire from the mag near any battery voltage. Battery voltage is only needed for cranking the engine. If that's the wire for grounding the mag you need a toggle switch to ground the mag and when the engine is being started your switch is in the run position . You may have a switch on your machine for that. Here's a link for a wiring diagram. Hal
PS: If it doesn't work do a search for a wiring diagram for the VH4D mag.
Untitled URL Link

Thanks for the link , I looked and its not what I have. All diagrams show a coil? Back to searching for a diagram for exactly what I have, seems like it should be a simple thing but I just can't find one? I have a shop manual, service manual, owners manual and many links people have sent me and not one shows a mag type vh4d engine wiring diagram? I even looked under international skid loader 3200b series which is what the machine is and still nothing.

A mag doesn't require any wires other than the grounding wire. Post a picture of your starter solenoid. Someone may know how it's wired. Some of them are grounded when you press a pedal allowing battery voltage to your starter. A coil requires battery voltage as shown in the wiring diagram. Your mag only needs a grounding wire. You either have a generator, alternator or a stator for keeping the battery charged. It will have either a regulator or rectifier/regulator. A wiring diagram for keeping the battery charged should be in that link. Hal

Scott I have followed your wiring posts. I think your problem is that by the time any skid steer loaders where made, no OEM was using a Magneto ignition. Your motor has been replaced with an older model. More than likely from a baler or combine. Years ago you could buy running Wisconsin motors for $50 all day long. Guys where switching implements from the old V-4 motors to PTO.

So finding a wiring diagram that is exactly what you need is just not going to exist. Your machine is a hybrid machine.

Wished you had posted before you had the magneto rebuilt or replaced. It would have been much simpler to have switched the motor over to a distributer and battery ignition. If it was mine and I was going to use it regularly, I would still get rid of the magneto. Magnetos are PIA to keep working. Especially in any moisture situations. Like pushing snow.

Also you can maintain a battery ignition much cheaper and simpler than the Magneto.

As far as wiring your system here is some things you need to do:

If you are going to keep the magneto. You will need an multi terminal key switch. It will need two terminals that are only connected to each other when the key is in the off position. Then isolated from all the other terminals in the on and crank position. You would run a ground wire to the one terminal and then a wire from the other "ground" terminal to the Magneto stud. This way when you turn the key to the "OFF" position the switch ground the magneto to kill the spark.

Then your switch will need two other terminals that are only connected when the key is in the crank position. You would hook one of these to a positive supply from the battery side of the solenoid. The other terminal would have a wire ran to the energize terminal on the solenoid. This way when you turned the key to the crank position the solenoid would engage the starter.

As for wiring the charging circuit you would need to tell us if the engine is using an alternator or generator. An what type of voltage regulator it uses.

Here again you need to keep in mind your engine is more than likely not the one your skid steer had when it was new. So the charging system could be many different ones. There are several different ways they would need to be wired.

You are finding out why I hate to work on anything that has been re-powered. Just about always the electrics are a hair ball.

Scott, If you are starting this engine on the bench, not in the machine, you should not need a wire diagram. Do not connect anything to the Magneto, unless it is a wire going nowhere until you want to shut off the engine. when you want it to run do not let it touch any metal on the engine. If you have gas, compression and the engine is timed correctly with spark it should start. Connect battery neg. to starter mounting bolt. Cable from starter you touch to the pos. on battery until it starts.

In your machine it's a different story. Draw a picture of what components you have and I would bet someone on here could draw you a wire diagram that would work. A Wisconsin is pretty simple.

And as JD said sounds like that machine was re-powered with an older engine or else someone replaced the distributor with a magneto.