Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12
  1. #11
    Super Star Member brin's Avatar
    Join Date
    Jul 2009
    Posts
    10,866
    Location
    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default Re: My New Holland TC- 29 won't start...clicks.only

    Quote Originally Posted by jinman View Post
    Bob, good for you Did you get a Duralast Gold battery at Autozone? I have them in my Dodge Cummins diesel pickup and they are top notch batteries. Other Duralast batteries are so-so, but the Gold really is a premium battery.
    Yep Jim, I got the Duralast Gold battery...they sure are proud of those...you see the price on batteries now...geeez, I haven't bought a battery in 4 yrs. so I was surprised they were so high...I appreciate all the help and advice...looks like I dodged a bullet this time...Whew !

    Quote Originally Posted by k0ua View Post
    Bob I am glad you got it going. Now you have a multimeter, and a good working tractor, you could make some of those measurements and see how things work when all is well, to better understand how things don't work when all is not well. If you can understand the relationship of Voltage, Current and Resistance (Ohms law) you will always be able to troubleshoot these kinds of problems. I know this will probably make your eyes glaze over, but here it is. E=IR E is "Electromotive force" or Voltage, (in honor of Mr. Volta) I is Current measured in Amperes (in honor of Mr. Ampere) or amps if you prefer and R is resistance measured in Ohms (in honor of Mr. Ohm). You can rearrange the equation using 9th grade algebra any way you want to solve the equation for the unknown variable. Here is an example if the E (or voltage) is known to be 10 volts and you apply it across a 10 ohm resistor, what will the I (or current measured in Amps) be? Just divide thru the equation E=IR thru by R on both sides of the equation, so the R on top and the R on the bottom cancel each other out, and you have on the left E/R=I so so lets plug in the values we know for the E and the R thus: 10/10=I so divide 10 by 10 and that equals 1 so the current is 1 ampere. Now you are thinking what in heck does this have to do with starting my tractor Well as an example say for instance you looked at the huge wires attached to the battery and you measure 12 volts on the battery end and 2 volts on the other end when you turn on a light whose current draw is lets say 1 amps and you know that such a large diameter wire should have way less than 1 ohm of resistance,(you can look this up in a chart) but what is the actual resistance of this wire? Ok lets plug in the values we have a 10 volt voltage drop so E is 10 and the known current draw of the lamp is 1 amp (we can look this up or estimate it) so the I is 1 so now our equation looks like this 10=1R divide through both sides by 1 to get the unknown (the R) on one side of the equation and you have 10=R so the resistance is 10 Ohms.. WAY WAY too much resistance for a starter wire that should be near 0 ohms. So when we try to pull any significant current thru this wire we have a serious voltage drop, in our test case here we have a 10 volt drop. Now if we take the load of the lamp off of the circuit and measure with our digital voltmeter we now measure 12 volts on both ends of the wire.. what the he77? why does that happen? Well the voltage drop appears to be near 0 because the current draw is near 0, (your digital voltmeter draws very very little current to make a measurement) So lets plug in the values to our E=IR equation.. 0=0xR and we know the R from our previous measurement that it is 10 ohms. so 0=0x10 so 0=0 and the equation is balanced. Even a very high resistance wire will measure the same voltage on each end as long as you do not try to draw any real current thru it. Most of you have long ago given up listening to me rattle on or never read this far, or fell asleep so I will stop now. But if you did even understand half of what I said, you are on your way to understanding Ohms Law.

    James K0UA
    Thanks for the tutorial James....I did not fall asleep, in fact I read it twice and will refer back to it....The problem is if I don't use something like this formula or a multimeter often, I will forget in short order...all things are not like riding a bike....that you never forget....Thank you very much for the time you took to explain that to me...
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
    JD -3020 with FEL and a 16 HP. K-Grow Lawn Tractor (bought from K Mart 1994) and runs great !
    Clark 130 EN Mig Welder

  2. #12
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    15,674
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: My New Holland TC- 29 won't start...clicks.only

    Quote Originally Posted by brin View Post
    Yep Jim, I got the Duralast Gold battery...they sure are proud of those...you see the price on batteries now...geeez, I haven't bought a battery in 4 yrs. so I was surprised they were so high...I appreciate all the help and advice...looks like I dodged a bullet this time...Whew !



    Thanks for the tutorial James....I did not fall asleep, in fact I read it twice and will refer back to it....The problem is if I don't use something like this formula or a multimeter often, I will forget in short order...all things are not like riding a bike....that you never forget....Thank you very much for the time you took to explain that to me...
    Brin I a glad you got some good out of my ramblings. Learning about electronics and the principals behind it can actually be fun. If you like solving mysteries/problems. Which is exactly what a tractor that wont start is, A mystery. There is a reason it won't start, all we have to do is find it. For instance your "bad" battery most likely had a very high internal resistance. A lot of battery's fail in that mode. Not all of course. But a battery with a high internal resistance may measure near normal, especially if just taken off the charger. But with the high internal resistance in the circuit it cannot deliver much current, even though the voltage may be 12.6 to start, as soon as you place a load on it to draw much current the voltage on the terminals drops excessively because the high internal resistance limits the current and the voltage drops. By the next step is to start thinking about the power equation.. Oh boy here it comes. P=EI or stated, the P stands for Power measured in Watts (in honor of Mr. James Watt) equals the E (electromotive force or more commonly called Voltage) times the I or the current measured in Amps. so lets say you have a 12 volt battery (you can measure across it with a voltmeter) and you place a load (lets say a lamp) across it and that load draws 1 amp of current, (you can measure that with your multimeter on the Amps setting, you will have to put the meter leads in series with the load to measure current). So you have 12 volts and 1 Amps. How much power is the lamp consuming? P=EI.. so P=12x1 so you are consuming 12 Watts of Power!. Now keep in mind that you are not putting out 12 watts of light, because incandescent lamps are not very efficient at all! So where is the rest of the Watts going? It is used to produce heat energy, the very thing an incandescent lamp does best. Far more of the Watts consumed go up in heat than are radiated in the form of light. So what is an incandescent lamp? Just a resistor that soaks up Watts and produces a lot of heat and a little light. There is more, but you are probably bored with this game by now. Hope you had some fun, I did.

    James K0UA
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


Page 2 of 2 FirstFirst 12

Similar Threads

  1. JD 750 tractor clicks, tries to turn, won't start
    By stamello in forum Owning/Operating
    Replies: 30
    Last Post: 09-10-2014, 12:53 AM
  2. John Deere 6403 clicks but won't start
    By M16 in forum John Deere Owning/Operating
    Replies: 4
    Last Post: 08-11-2012, 09:21 AM
  3. 2210 won't start just clicks
    By dog5farm in forum John Deere Owning/Operating
    Replies: 8
    Last Post: 07-23-2012, 10:05 AM
  4. 4110 wont start just rapid clicks
    By roermo in forum John Deere Owning/Operating
    Replies: 21
    Last Post: 12-16-2008, 04:53 PM
  5. PT1418 won't start but clicks...ideas?
    By davesisk in forum Power Trac
    Replies: 16
    Last Post: 05-22-2005, 08:15 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.