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steve(ill)
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Joined: 11 Sep 2009 Location: illinois Points: 90549 |
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Posted: 03 Feb 2021 at 8:36am |
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hunter, you have run the basic tests.. You have 12 volts INTO the coil and 12 volts OUT of the coil. If the point is corroded and not closing, you would still have voltage at the coil terminals... Your next step is to clean the point contacts and then touch them together with a screw driver or wire and see if you get a spark... or loose the 12 volts on the coil wire to the point.........
"NORMALLY" what happens at this point is the guy would replace the point and the condenser and see if that fixes the problem.. If not, then buy a new coil... It is hard to pinpoint exactly what the problem is at this point.. You have done all the testing.
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Like them all, but love the "B"s.
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hunter321
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Joined: 11 Jan 2021 Location: 52320 Points: 520 |
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Posted: 03 Feb 2021 at 8:19am |
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I have power to the other 2 terminals
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Jim.ME
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Joined: 19 Nov 2016 Location: Maine Points: 971 |
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Posted: 03 Feb 2021 at 7:05am |
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The opening and closing
of the points collapses the field inside the coil, producing the secondary high
voltage for the spark. There are some tests that can be done with a test light at the secondary terminal but are not as commonly done. Did you have power at both primary (small)
terminals when tested as I posted? What were the results at each test
location I asked about? Here is a link to an IH/Farmall FOS (Fundamentals Of Service) manual, on the Farmall Cub website, that I think will help you understand the coil and ignition system better. Understanding how things work will make the test results more meaningful to you. The theory and components are common to both IH and AC (and about anything with a point type distributor ignition). It details several tests you can make besides the ones you have been given so far. Edited by Jim.ME - 03 Feb 2021 at 7:05am |
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hunter321
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Joined: 11 Jan 2021 Location: 52320 Points: 520 |
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Posted: 02 Feb 2021 at 6:48pm |
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I don't have power from the secondary wire from the coil
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Jim.ME
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Joined: 19 Nov 2016 Location: Maine Points: 971 |
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Posted: 02 Feb 2021 at 10:40am |
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Your test light will work to make those tests. Let us know what you find.
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hunter321
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Joined: 11 Jan 2021 Location: 52320 Points: 520 |
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Posted: 02 Feb 2021 at 8:30am |
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I have a normal test light
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Jim.ME
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Joined: 19 Nov 2016 Location: Maine Points: 971 |
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Posted: 01 Feb 2021 at 7:37pm |
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The two small terminals on the coil are the primary side terminals, the high voltage wire is called the secondary. With the key on and the points open (they must be open) you should have power at the two small terminals on the coil. If you only have power on the switch side (- terminal), try unhooking the primary wire going to the distributor and checking the terminals again. If you have power on both terminals with the wire to the distributor unhooked, the coil is most likely ok. If the terminals both had power look for that primary wire, the condenser wire, or the straps on the points being grounded out. If the points aren't opening it could be a problem as well. What are you using to test for power? Voltmeter, 6 volt test light, or something else?
Edited by Jim.ME - 01 Feb 2021 at 7:39pm |
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hunter321
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Posted: 01 Feb 2021 at 5:39pm |
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How do I know if the coil is bad
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hunter321
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Posted: 01 Feb 2021 at 1:31pm |
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I dont think I have power coming from the coil
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ac45dave
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Joined: 23 May 2015 Location: SE(IN) Points: 1349 |
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Posted: 01 Feb 2021 at 1:04pm |
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Make sure the distributor is grounded.If not grounded,then clean the mounting surfaces were the dist mounts into the engine.
Edited by ac45dave - 01 Feb 2021 at 1:04pm |
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54 wd-45gas ; 56 wd-45d N/F w/fact p/s ; 63 d-17 sIII N/F gas ; 60 D14 N/F ; 67 d-17 sIV N/F gas ; 63D15 sII W/F; 39rc#667 ; 2021 massey 4710 fwa ; gravely 2 wheel tractors
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Sugarmaker
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Joined: 12 Jul 2013 Location: Albion PA Points: 8649 |
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Posted: 01 Feb 2021 at 12:59pm |
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No spark? Might try cleaning points and or check/set point gap.
Need these things too which I assume you checked:
Fuel? Check for flow through the carb. Compression? Check each cylinder for pressure on compression stroke. Regards, Chris |
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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hunter321
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Joined: 11 Jan 2021 Location: 52320 Points: 520 |
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Posted: 01 Feb 2021 at 11:36am |
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What do I try next
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hunter321
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Posted: 01 Feb 2021 at 10:55am |
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I have power the coil and every thing but when I checked if I had spark I still dont
Edited by hunter321 - 01 Feb 2021 at 10:57am |
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DrAllis
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Joined: 12 Sep 2009 Points: 22752 |
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Posted: 12 Jan 2021 at 5:03pm |
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Sure, they could be, but until you know you have power or not to the coil and thru the points, that is just a guess.
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hunter321
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Posted: 12 Jan 2021 at 4:42pm |
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Could the sparkplug wires and the wire from the distributor to the coil be bad
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hunter321
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Posted: 12 Jan 2021 at 12:14pm |
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Once I get it started I am going to add in the light switch
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hunter321
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Posted: 12 Jan 2021 at 12:12pm |
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The switch is new I am getting a new ammeter and me and my dad are going to see if I have power to the coil or not
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steve(ill)
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Joined: 11 Sep 2009 Location: illinois Points: 90549 |
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Posted: 12 Jan 2021 at 12:05pm |
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you dont need the light switch or the generators wires, or head light wires to make it run... all you need is the HOT red wires i have shown from the battery - starter - amp - switch - coil - distributor .... then the POINT has to open and close and have good contact faces.
like mentioned earlier... if you dont know if the amp meter and ingition switch are good.. you can run a wire from the battery negative terminal straight to the coil... and the coil wire to the distributor... it should have power with those two wires. ... you can also use a test light or meter to see if you have 6 v at the coil terminal. Edited by steve(ill) - 12 Jan 2021 at 12:08pm |
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Like them all, but love the "B"s.
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steve(ill)
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Posted: 12 Jan 2021 at 12:01pm |
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yea, that looks pretty good.. While you were posting, i took the ORIGINAL drawing at the top of the page, put the coil and distributor in, and highlighted the HOT wire ( negative), from the battery, to the starter, to the amp meter, to the on- off switch, to the coil to the distributor......... i think that is what you have shown..
![]() ![]() Edited by steve(ill) - 12 Jan 2021 at 12:03pm |
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Like them all, but love the "B"s.
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hunter321
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Posted: 12 Jan 2021 at 11:52am |
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This is what I have wired right now
![]() Edited by hunter321 - 12 Jan 2021 at 11:55am |
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steve(ill)
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Posted: 12 Jan 2021 at 11:44am |
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all you need is a hot wire going to the COIL from the battery ( negative if that is your HOT).... then a wire from the coil (+) to the distributor point..... those two wires will give your distributor point power... if it starts and you want to stop, just pull the little wire off the battery. ( or on - off switch).
you dont need the light switch, generator, etc.
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Like them all, but love the "B"s.
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hunter321
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Joined: 11 Jan 2021 Location: 52320 Points: 520 |
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Posted: 12 Jan 2021 at 11:15am |
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if i have everything wired ecpet the light switch would it matter
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hunter321
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Posted: 12 Jan 2021 at 8:33am |
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ill try that
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WF owner
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Joined: 12 May 2013 Location: Bombay NY Points: 5179 |
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Posted: 12 Jan 2021 at 7:20am |
... and it probably has a better quality condenser than you can buy today !
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Steve in NJ
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Joined: 12 Sep 2009 Location: Andover, NJ Points: 12071 |
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Posted: 12 Jan 2021 at 7:01am |
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Sitting that long, it probably just needs some Brakekleen on a rag run through the points. It'll probably fire right up!
Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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hunter321
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Posted: 12 Jan 2021 at 6:19am |
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It definitely has a distributor. I have friends who have ac wd45 and can help with the work you guy mentioned before. Thanks
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DrAllis
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Joined: 12 Sep 2009 Points: 22752 |
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Posted: 11 Jan 2021 at 8:46pm |
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A WD-45 with a magneto ???
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steve(ill)
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Joined: 11 Sep 2009 Location: illinois Points: 90549 |
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Posted: 11 Jan 2021 at 8:14pm |
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hunter, dont take the mag off the tractor because right now you dont know how to retime it during install......... just watch this movie and maybe get an idea of how things work.
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Like them all, but love the "B"s.
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steve(ill)
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Joined: 11 Sep 2009 Location: illinois Points: 90549 |
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Posted: 11 Jan 2021 at 7:57pm |
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the drawing show ONE WIRE going to the magnito from a KILL SWITCH.. Just to be safe, take that wire OFF THE TERMINAL to make sure it is not GROUNDED ( = no spark)
a magneto looks like this (below)... will have 4 spark plug wires. a distributor cap looks like this ( below) Edited by steve(ill) - 11 Jan 2021 at 8:10pm |
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Like them all, but love the "B"s.
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steve(ill)
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Joined: 11 Sep 2009 Location: illinois Points: 90549 |
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Posted: 11 Jan 2021 at 7:56pm |
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hunter, if you have a magnito it will have 4 wires on the cap that go to the individual spark plugs.. The magnito has no BATTERY POWER. It is a rotor and coil inside the housing that generates it own spark..
A DISTRIBUTOR ignition system has a black cap with 5 wires.. the one in the CENTER comes from an external coil that is powered from the battery... just like an old truck. Assuming you have a MAGNETO with 4 plug wires only, you do NOT need any other wires or battery to get the spark.. All the battery does is crank the motor over... If you remove the black plastic magneto cap you will see a point inside that opens and closes and makes the spark JUMP... There might be corrosion on the point faces. spread them 1 /16 inch and drag some fine sand paper across the contacts several times.. See if that works.. If not, you might had additional problems with the condenser or internal coil.
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Like them all, but love the "B"s.
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