1983 Ford 1700 Diesel 4 wheel drive...while daydreaming late the other night, I was installing a brand new battery in my tractor. Long story short I hooked the battery up incorrectly, heard a faint pop sound & smelled a small cloud of electrical stink. The charging light is now lighting up on the dash. Please tell me what I popped and where it is located on the tractor. Is it a dealer only part or under what brand name? What retail parts establishment can I probably purchase this in Central Illinois. Thanks for your help.
charging battery problem on Ford 1700
skent
Platinum Member
Hooking up the battery backwards has possible allowed the smoke inside your alternator to escape. The bad news is that once the smoke escapes, it's almost impossible to get back in, so you'll most likely have to replace the alternator (an-or regulator). The good news is most local alternator rebuild shops could test and repair (install new smoke) in your alternator at a fraction of the cost of a new one. Also - check for any blown fuses.
Hooked_on_HP
Veteran Member
There is a voltage regulator mounted on the front of the fuel tank on the right side.I would remove it and take to to an auto parts store to be tested. If you are lucky you smoked it and not the alternator.
Bill
Bill
Soundguy
Old Timer
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If the charge wire from the output of the alt is not cutout protected.. which it probably ain't, and/or unless the rectifier is outboard and in the regulator like some of the other asain market dynamo's.. then the silicon inthe diode is surely bad...
soundguy
soundguy
Matt_Jr
Platinum Member
Can anyone post a wiring diagram? This is my kinda stuff. Just not familiar with your tractor or charging system.
Thank you all for your responses...so far. You all have 48 more hours to help me since I can't drive the 60 to the farm till Saturday-1/31/09. I don't have a wiring diagram...wish I did...can someone help? Thanks again...keep up your great ideas.
JB4310
Super Member
This is courtesy of JC-jetro, another 1700 owner who helped me when I first got mine, I had to have my alt rebuilt, it was around $180. new was $600!
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JC-jetro
Elite Member
There are two type of alternator for the 1700, Hitachi and Nippon Denso and both have internal diode (rectifier bridge) to convert AC to DC. I'm afraid you might have fried the diode
. There is a Voltage regulator behind the gas tank that is very easy to take out for access. I'll attach a pic for your use. You can check for the bad diode without Alternator disassembly. I'll try to find the post JB was talking about. Where did the smoke come from? JC,
Alternator:
Voltage Regulator:
Very Long Thread, but passed the middle you'll find bunch of good info that you might find useful.
http://www.tractorbynet.com/forums/new-holland-owning-operating/106389-ford-1700-any-help.html
Soundguy
Old Timer
- Joined
- Mar 11, 2002
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- 52,424
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- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
I'll bet the B circuit vreg survived... but reverse current on a diode pretty much kills it instantly..
soundguy
soundguy
JC-jetro
Elite Member
Agreed. Splitting the alternator and Diode replacement is pretty simple thing to do, only if you can your hand on one.
JC,
Matt_Jr
Platinum Member
First you'll need to check to see if the wire to the alternator is still good. Hope you've got a multi-meter. Check resistance between B+ and the alt B+ terminal. Next check resistance between alternator housing and ground on the battery. Both should be near zero or less than .3 ohms. If ok test the alternator and diodes. Start by checking charging voltage.
1) Start tractor and run at rated rpm. Set voltmeter to DC and connect it to the battery, should be around 13.7 volts. If voltage is ok go to step 2. If not go to step 3.
2) Check the diodes by switching your meter to a/c voltage and measure voltage at the battery again. This time it should be less than .5 volts. If voltage is higher replace alternator.
3) Shut off tractor and connect a jumper wire to your "F" terminal on the back of the alternator and the B+ side of the battery or B+ terminal on the alternator. Start tractor and run at rated rpm. Measure voltage at battery. Should be around 13.7 volts. If it isn't you need an alternator. If it is around 13.7 switch your voltmeter to AC to test diodes. You should read less than .5 Volts. If under .5 volts alternator diodes are good. If not the diodes in the alternator are bad. If both of those tests are ok you'll most likely need a regulator. This part is time consuming, but using the wiring diagram supplied by JB4310 check the resistance in the rest of the circuit(each end of each wire of the regulator and alternator with negative battery cable disconnected). This will make sure none of the other wires have melted somewhere, causing you to buy an unneeded part. let us know how it works out. Good luck.
1) Start tractor and run at rated rpm. Set voltmeter to DC and connect it to the battery, should be around 13.7 volts. If voltage is ok go to step 2. If not go to step 3.
2) Check the diodes by switching your meter to a/c voltage and measure voltage at the battery again. This time it should be less than .5 volts. If voltage is higher replace alternator.
3) Shut off tractor and connect a jumper wire to your "F" terminal on the back of the alternator and the B+ side of the battery or B+ terminal on the alternator. Start tractor and run at rated rpm. Measure voltage at battery. Should be around 13.7 volts. If it isn't you need an alternator. If it is around 13.7 switch your voltmeter to AC to test diodes. You should read less than .5 Volts. If under .5 volts alternator diodes are good. If not the diodes in the alternator are bad. If both of those tests are ok you'll most likely need a regulator. This part is time consuming, but using the wiring diagram supplied by JB4310 check the resistance in the rest of the circuit(each end of each wire of the regulator and alternator with negative battery cable disconnected). This will make sure none of the other wires have melted somewhere, causing you to buy an unneeded part. let us know how it works out. Good luck.