Re: Ford 2 n won't start today but yesterday she did??

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Posted by Tim Daley(MI) on June 16, 2018 at 06:08:47 [URL] [DELETE] :

In Reply to: Ford 2 n won't start today but yesterday she did?? posted by Will on June 15, 2018 at 20:10:22:

HiYa Will-
99.98% of all non-starting/non-running issues with these old Ford N Tractors is due to some feeble attempt at switching over from 6V/POS GRN to 12V. The root cause is always because of incorrect wiring and/or incorrect and/or missing parts in the circuit.There's a right way and a wrong way to do a 12-volt conversion. The are maybe a half dozen right ways. In our HOW-TO's forum, ELECTRICAL, we have several wiring documents to help. Here is a LINK to view one very important one to download and keep in your shop - "WIRING PICTOGRAMS by JMOR". Scroll down until you find your set up and scrutinize that it matches what you have on your tractor with no deviations. The first thing you need to test is the battery. How old is it? Simply 'charging' it dos not mean it is a good battery. The battery must sustain a full charge under load, in order to supply the needed current for starting and running the system, whether 6V or 12V. Take the battery to a reliable starter shop or a local auto parts store to get bench tested. A correct 12V battery for your tractor should be a GRP-25 or GRP-35 AG type, not an automotive or a Deep Cycle battery. The battery cables must be 1V type, not the heavier gauge 6V type. Is your col 6V or 12V? If 6V, then you need to add an in-line 1 OHM ceramic resistor as shown in the PICTOGRAMS. A 12V/NEG GRN battery, with an alternator, and a 12V coil does not use the extra resistor. Whether using a 6V coil or a 12V coil, you MUST use the OEM Ballast Resistor in the circuit. The original round can cutout is taken out of the circuit altogether; no longer used. You said you have fuel flow so that leaves the electrical system as the next possible root cause, and, in my opinion, the most likely. Your wiring and maybe a component or two are not right in my opinion. I'd also get the ammeter replaced -you want to know if you are charging the battery or not. Don't make guesses at what 'might be' the problem. Checking the wiring connections is fine, but use the right tool -crimping wire connections with pliers is not the right way. Start with these tips and report back with your findings. It is also recommended that you get the essential manuals for the Ford-Ferguson 9N/2N tractor. The I&T F-04 Manual; the '39-'53 MPC; and the 9N/2N Service Manual are good starts.


ESSENTIAL 9N/2N OWNER MANUALS:

ORIGINAL 9N/2N WIRING DIAGRAM:

Tim Daley(MI)


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