Toro 16hp Z not charging

Discussion in 'Mechanic and Repair' started by wlkjr, Aug 26, 2005.

  1. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Ok, Go to the red single wire on the regulator. unplug it, Put your red test lead on the wire from the harness (not the regulator) put your black test lead to any ground. Turn the key switch to the on position only and read voltage and post back.
     
  2. wlkjr

    wlkjr LawnSite Member
    Posts: 26

    12.35 from ground to red lead disconnected from regulator.
     
  3. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    Plug that wire back up. Unplug the double plug with the two yellow wires on the regulator. Put your meter on ohms, On the plug end with the two black wires (not the two yellows going to the regulator) connect one test lead to one wire, The other lead to the other wire. now look at your meter and it should show a closed loop system. post back your findings.
     
  4. wlkjr

    wlkjr LawnSite Member
    Posts: 26

    I have using a digital for resistance. Appears to read about 0.4 on ohms but with the Triplett 310 set on 1000 it goes to 0 which to me would indicate a hard short. Shouldn't I be getting some kind of resistance?
     
  5. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    I'm not familiar with the fluke you are using, What we are looking for is the same reading as if you were to put your two test leads together. (a closed loop circuit) my meter has 0.L when I turn it on ohms,when I put the two leads together I get 00.0 (which is what I'm calling a closed loop).
    There shouldn't be if any very little resistance
     
  6. wlkjr

    wlkjr LawnSite Member
    Posts: 26

    Yep. That's what I get. So I know from that the stator is not open. Seems like I got a 12.5v reading with the engine running looking back toward the stator but was yesterday and I've took so many readings and didn't write them down and now I don't remember.
    I'm going to owe you bigtime Restrorob! payup
     
  7. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Now that we know the stator is not open there is only one test left.
    Still on ohms touch one of the black wires with one test lead then put the other test lead to a good ground. This should read a open circuit (not closed)
     
  8. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    If this test shows a open circuit the Bandit is the voltage regulator.

    A Quick Recap;

    Post # 20 This is how to test the charging system to see if it's working.
    Post # 22 Tested the mower wire harness for any problem, checked o.k.
    Post # 26 & 27 Tested the staror for open circuit and short to ground o.k. if not shorted to ground.
    There is no test for the voltage regulator, One must perform the above test procedure and eliminate each item as being the problem, Once completed you are left with the voltage regulator as being the problem.
     
  9. jim dailey

    jim dailey LawnSite Senior Member
    Posts: 614

    BOY, this is getting to be thrilling...I can't wait for the ending and the outcome. Sorry, just being a wiseguy, for the moment. I am following this with interest because I have a CV18 Kohler that is also not charging. I will follow the testing procedures that you guys are using to see if I can remedy mine. In the meantime, just carry-on with the procedure, and I will watch from the Peanut Gallery.
     
  10. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    For some unknown reason I just knew you were lurking around back there somewhere. LOL
    On your Kohler the purple wire in the center of the regulator plug will be the test point for the mower harness and the two outer white wires for the stator.
    Just a heads up; I've seen the magnets come un-glued on older CVs and stick to the stator without damaging it, Thus testing good and with the mower harness testing good a new regulator installed and still no charging.
    One more, If the need arrives to pull a Kohler flywheel off never use a hammer use some type puller. Any shock to the flywheel could knock the magnets loose if they weren't already.
     

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