Just finished rebuilding my mower deck today. It sounds nice and quiet. I backed the cub 184 out of the shop, with all intentions of trying out the deck and the tractor just died right there. Would crank but not fire. I suspect the coil. I hooked up a volt meter between the wire to the distributor and ground on the tractor, I get nothing. Is there a better way to check it?
Thanks,
DR
This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
Can you test a coil?
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
-
- 10+ Years
- Posts: 176
- Joined: Mon Jul 02, 2007 5:17 am
- Zip Code: 16656
- Tractors Owned: 1977 Cub 184 Lowboy
1979 John Deere 2640
2013 Kubota L3800 TLB
1949 International Cub - Location: West Central PA
-
- Team Cub Mentor
- Posts: 24144
- Joined: Sun Feb 02, 2003 12:50 pm
- Zip Code: 43113
- Circle of Safety: Y
- Location: OH, Circleville
Re: Can you test a coil?
You will only read voltage there when the points are open. You should have voltage on the other primary terminal of the coil when the switch is on. One way to test the coil would be to connect a grounded sparkplug to the coil output and then use a screwdriver to open and close the points. Each time the points open you should get a spark.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
-
- Team Cub Mentor
- Posts: 20388
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Can you test a coil?
I think you need the wiring diagram for the 184. There are several switches and a safety switch or two affecting the ignition system.
Just me. I would remove the distributor cap and block the points open. Then with the ignition switch on and a multimeter, start checking for voltage at the distributor - working back along the ignition system until I found voltage.
My guess as to the problem. Open in the ignition circuit. Wire came loose, safety switch open.
Just me. I would remove the distributor cap and block the points open. Then with the ignition switch on and a multimeter, start checking for voltage at the distributor - working back along the ignition system until I found voltage.
My guess as to the problem. Open in the ignition circuit. Wire came loose, safety switch open.
I have an excuse. CRS.
-
- 10+ Years
- Posts: 176
- Joined: Mon Jul 02, 2007 5:17 am
- Zip Code: 16656
- Tractors Owned: 1977 Cub 184 Lowboy
1979 John Deere 2640
2013 Kubota L3800 TLB
1949 International Cub - Location: West Central PA
Re: Can you test a coil?
If a safety switch was open, it wouldn't let it crank, right? This is cranking very well just not firing.
There are two examples I can think of, that stop the tractor from turning over. 1) If it stalls when mowing you must turn the pto off or it will not crank and, 2) if you do not push the clutch in, it will not crank. I am not familiar with any situations that will prevent it from firing but allow it to crank. If you know of something different, please tell me. Thanks.
There are two examples I can think of, that stop the tractor from turning over. 1) If it stalls when mowing you must turn the pto off or it will not crank and, 2) if you do not push the clutch in, it will not crank. I am not familiar with any situations that will prevent it from firing but allow it to crank. If you know of something different, please tell me. Thanks.
-
- Cub Pro
- Posts: 4436
- Joined: Wed Dec 26, 2007 7:45 pm
- Zip Code: 32536
- Circle of Safety: Y
- Location: FL, Crestview
Re: Can you test a coil?
Dieselrider wrote:If a safety switch was open, it wouldn't let it crank, right?
You are correct, the switches kill power to the starter, not the coil. Even the oil pressure switch just gives you a light, with no affect on power to coil. I would do what Bigdog suggested, along with a multimeter checking 12V on the hot side of the coil and ground on the negative side with the key on. Dirty contacts inside the ignition switch will also give you the same problems you have.
Screwstick #3934
FCub - LoBoy - Numbered Series - Power Unit Databases
FCub - LoBoy - Numbered Series - Power Unit Databases
-
- Team Cub Mentor
- Posts: 20388
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Can you test a coil?
http://ihregistry.com/wiring/K17.pdf
184 wiring diagram, above. Multimeter. Start checking the ignition circuit at the points. The solenoid and ignition circuit seperate at the PTO switch. A faulty contact in the PTO switch or an open in the circuit would let the engine crank and not start.
184 wiring diagram, above. Multimeter. Start checking the ignition circuit at the points. The solenoid and ignition circuit seperate at the PTO switch. A faulty contact in the PTO switch or an open in the circuit would let the engine crank and not start.
I have an excuse. CRS.
-
- 10+ Years
- Posts: 176
- Joined: Mon Jul 02, 2007 5:17 am
- Zip Code: 16656
- Tractors Owned: 1977 Cub 184 Lowboy
1979 John Deere 2640
2013 Kubota L3800 TLB
1949 International Cub - Location: West Central PA
Re: Can you test a coil?
I found it. I had spliced some wires (I don't remember why- maybe a bad plug) behind the dash once before. I had voltage at the switch and none at the coil. With vibration and time the wire nut just wasn't allowing a connection there. I just got done giving the deck a trial run. Maybe I should consider a rewiring job on the cub this winter.
Thanks guys for the help.
Thanks guys for the help.
-
- 10+ Years
- Posts: 140
- Joined: Mon Apr 21, 2008 8:02 pm
Re: Can you test a coil?
Lick your small finger and put it inside the coil contact firmly grasp the the frame and have your wife crank the engine. She will want to help more when she sees the reaction...... Now don't you dare do that!! have one of the kids do it GT
-
- Similar Topics
- Replies
- Views
- Last post
-
-
Ignition coil drops to 0 volts when starter engages ???
by BishopsBowyer » Sun Dec 19, 2021 1:47 pm » in Lo-Boy Series - 154, 184, 185 - 8
- 634
-
by Shovelhead
Tue Dec 28, 2021 11:44 pm
-
Return to “Lo-Boy Series - 154, 184, 185”
Who is online
Users browsing this forum: No registered users and 1 guest