Posted by Tim PloughNman Daley on December 19, 2022 at 10:33:19 from (24.236.161.49):
In Reply to: parasitic draw posted by ordinaryguy on December 19, 2022 at 08:51:10:
Tractor will run on POS or NEG system. 99.98% of all non-starting issues are due to incorrect wiring regardless if 6V or 12V; it's how they are wired. Don't assume just because you have a 6V battery the rest of your system is set up for the 6V/POS GRN system. A '51 would indicate a late 8N using the Angle (Side) Mount Distributor and that is more important than worrying about a model year. You need our ESSENTIAL MANUALS and related documents from JMOR on wiring. Go thru entire wiring using documents and your VOM set to Continuity, NOT an Idiot Test Light. First, pull battery, take to a reliable shop and have tested on their machine under load. Your basic garage/shop trickle charger is not going to do anything especially if you've overcharged the battery and boiled the electrolyte out. You can't replace it; it doesn't work that way. With battery removed, motor test the GEN. It is a 3-Wire/2-Brush 20A Unit and it MUST have a fan belt tensioner attached otherwise you will never charge the battery. The GEN also requires the Voltage Regulator. GEN & VR wires are ARM BAT FLD. Get them right. Starter Motor is a 3-Wire Unit that uses a Relay (Solenoid). I&T Manual has a motoring test. If good, after all wiring is verified correct, connect battery and Polarize GEN via VR. Once running again, invest in a float charger - DELTRAN BATTERY TENDER JR is good and keep battery in charge when tractor not in use. Start here...
FORD 8N TRACTOR - 48-52; FRONT & ANGLE MOUNT DISTRIBUTOR:
FORD 8N TRACTOR ESSENTIAL PARTS & SERVICE MANUALS:
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