682 pto

[J-Mech]

Originally Posted by R Bedell

You have looking at the WRONG diagram. You need to look at the one for 720,000 & higher.

I'm confused.... In his link there are both diagrams. By his wire description, he is looking at the correct one. Perhaps you missed his post #9? (I've skipped over posts before.)

Originally Posted by Dustyroads

From what I found with the switch, when I engage the PTO the switch connects A to B (Black PTO to brown Rev SW Relay).

I however do not get 12 V out of the brown wire. If this is the reverse switch relay, found at the Neutral location on the F & R column, I see that right off this switch someone over the last 30 years put another manual switch onto this rev switch. Prior to that I believe it went through a fuse on the dash. I suspect that this has something to do with it...but i'm not exactly certain. I tried the switch in both positions. I found that in some cases the tractor wouldn't start, flick the switch and it would.

Ok..... so, someone has been playing around in there. I suggest ripping out all that the PO did. According to the diagram, the power wire to the ign switch is the only thing that should be going through the fuse. After getting all the hack-job wiring out, then you can either repair your system, or "modify" it the way that you want. (Wink, wink) Still sounds like you have a bad PTO switch. However, you neeed to make sure that you are getting power to the PTO switch. You never said. You just say your not getting power on the "A" terminal (Or brown wire.) How about the "B" terminal? Power there at all times?

[R Bedell]

OK....now I am confused also......

[Dustyroads]

I have power to C And with the switch off it'll transfer over to D to the starter, so that works. I have power to F also. I do not have anything at A. Which leads me to believe that either the PO reverse switch deal is screwing something up or the relay is not switching properly and energizing A after start up.

I plan to check pin 5 of the relay to see if it's energized after start up. If it is, that implies that the problemishes lies between pin 5 and pin A on the PTO switch
Both 720 and up and 719 and below are on the wiring diagram page I provided a few posts ago.

[J-Mech]

When you are testing terminal "A" on the PTO switch, IF the relay is not holding/working, you will only have power on the "A" terminal when the PTO switch is in the "Start" position. Does the "A" terminal have power when the switch is in the "Start" position? If so, the problem is either in the reverse switch, or the relay. Should only take a couple more simple tests to determine where the issue is.

[Dustyroads]

Well, I narrowed it down to the relay.

we got 5" of snow today, I fired her up and cleared off the driveway. While I was backing it into the garage... pop and some smoke...engine bit the dust...hole in the block. What a bummer. I must of had a small oil leak and it was blowing it out from somewhere. When the snow started to melt I could see the oil drops all over the driveway.

I don't have the time to put into motor work so off to Craigslist it goes. I learned a lot from the help here. I greatly appreciate your enthusiasm for these machines.

Thanks,
Dustin

[a3v03v0]

So sad to hear. Too bad you are so far away....

[J-Mech]

That's it??? All that work, and you just give up and walk away??

Put a motor in that thing!!!! Yeah, too bad your so far away. At least put it up for sale on here and give someone a shot at it.