I have a Simplicity Sunstar that had the engine replaced and now the PTO is always on.... Can anyone help?
Simplicity Sunstar
akuhns
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on the original the right side facing forward is the hot side is ground the later ones have both in the same plug. send picture we can see what you are dealing with.
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Put a meter, or test light, on the two wires going to the PTO. You can do this without the engine running (for safety) if you have someone or something in the seat whose weight will operate that switch (assuming you have one). With the key on, weight in seat, PTO switch on, the PTO should engage with a noticeable click. Pushing the PTO switch off should drop the PTO out, at least electrically.
What I'm looking for is to see if voltage is going to the clutch when it shouldn't be, that is when the PTO switch is off. If the voltage goes off with the switch, you have a mechanical problem in the clutch. It the voltage doesn't go off, you have an electrical problem, such as a bad PTO switch, etc. This will narrow your search.
Good pics, BTW.
What I'm looking for is to see if voltage is going to the clutch when it shouldn't be, that is when the PTO switch is off. If the voltage goes off with the switch, you have a mechanical problem in the clutch. It the voltage doesn't go off, you have an electrical problem, such as a bad PTO switch, etc. This will narrow your search.
Good pics, BTW.
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A test light will light on both sides you have to remove ground to only have one side light its a little hard to understand at first.
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A test light, with one side grounded, will not light when it is touched to the ground side of the connector - unless there's a bad ground for the clutch. Since the clutch works, it's safe to assume it has a good ground.
I am looking for power going to the clutch. OP could shut the PTO switch off, ground the test light and probe both sides of the connector. Only one side should be hot with the switch on, the other is ground.
If the PTO switch switches the ground side, then both sides of the connector would show hot with the switch off. I'd have to see a schematic, but I doubt the ground side is switched. If it is, a wire shorted to ground could keep the clutch engaged.
I am looking for power going to the clutch. OP could shut the PTO switch off, ground the test light and probe both sides of the connector. Only one side should be hot with the switch on, the other is ground.
If the PTO switch switches the ground side, then both sides of the connector would show hot with the switch off. I'd have to see a schematic, but I doubt the ground side is switched. If it is, a wire shorted to ground could keep the clutch engaged.
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The ground will also show curent unless ground has been disconected . Disconect both sides at the clutch and with a test light you will find the hot one and the one that does not light is the ground . Your problem is the on off switch not working right thats where I would go next . Is the rest of the wireing okay or is all of it messed up.
thank you for all of the information. I am going to go try it now and see what I get but speaking of wires, I have one that comes out of a three wire connector that is just cut off..... could this be my problem. it's the white wire in the picture.
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To expand on what Fcubman has said and I think he is correct, here's how I would check the PTO circuit.
Disconnect the PTO power supply harness (i.e. plug) start the engine and see if it's still engaged all the time, if it is then it's a mechanical fault in the PTO clutch itself and should be replaced.
If it doesn't stay engaged then the problem is farther up the harness, maybe a bad PTO switch ?
I doubt it would be shorted wire as it hasn't blown any fuses but it wouldn't hurt to trace the harness and look for any problems, I also don't see any of the lockouts causing this because it still must have the switch in the on position in order to complete the circuit.
My money is on a bad switch or the PTO clutch is shot but leaning towards the switch being bad.
Ron
Disconnect the PTO power supply harness (i.e. plug) start the engine and see if it's still engaged all the time, if it is then it's a mechanical fault in the PTO clutch itself and should be replaced.
If it doesn't stay engaged then the problem is farther up the harness, maybe a bad PTO switch ?
I doubt it would be shorted wire as it hasn't blown any fuses but it wouldn't hurt to trace the harness and look for any problems, I also don't see any of the lockouts causing this because it still must have the switch in the on position in order to complete the circuit.
My money is on a bad switch or the PTO clutch is shot but leaning towards the switch being bad.
Ron
Attachments
In the three wire connector that you are looking at,
the green wire is for the oil sentry (turns on the "Oil" light if no oil pressure),
the black wire is the charging voltage coming from the center pin of the regulator,
and the white wire should be for the "kill" signal to the ignition module.
With the white wire cut off, there must be some other way you are able to shut the engine down.
The way your PTO system works is that the PTO switch sends +12v to the right side of the PTO clutch AND the left side of the PTO clutch will get a ground from the interlock module IF the safety circuits are satisfied.
As others have said, disconnect the right side wire from the PTO and see if it is still engaged. I'm assuming your PTO switch is not on and also the PTO light on the dash is off? It must be either a wiring problem or your PTO clutch is locked up somehow.
Gerald
You could probably try to adjust it, but it would be best to take it off and examine it real good to see if something besides adjustment is causing it to engage all the time. Here is a write up on checking and adjusting it:
http://www.warnerelectric.com/litportal/pdfs/819-0458_P-1097-6.pdf
Gerald
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Perhaps the bearing in the clutch is seized. It might be replaceable. I am not familiar with this clutch, but someone on here must be! The air gap may be adjustable, but usually that causes a non-engagement problem. I'll be my 2¢ that the PTO bearing is rusted or seized up.
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The clutch is adjustable, did they tighten it up when they installed the motor. i would try there first
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unplug wires on both sides remove bolt in crank and remove 3 nuts holding bearing plate on slide pully and bearing off shaft now remove the 4 bolts holding clutch on your home free
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