Posted by binder300U on February 20, 2010 at 16:01:40 from (206.212.229.240):
I recently converted my 300u to a 12 volt system. It seems to be wired correctly, it starts, everything works, but to date i have fried two alternators! everything is fine for about 4 to 5 starts/runs- charging kicks in about 1500rpms. Then i start up the tractor, and suddenly it won't charge the battery(warning light stays on, no matter what the rpms).
electrical system components: original 6v delco starter with new 12v solenoid delco 4 pole ignition switch(came on the tractor when i got it) with poles for ACC, BAT, SOL, and IGN delco 12v coil delco 3 wire alternator new repro IH ammeter
wiring: (8ga)BAT post on alternator to (L) post on ammeter (8ga)wire from B post on ammeter to large post on solenoid (4ga)wire from same large post on solenoid to +battery terminal (1ga) wire grom -battery terminal to body (12ga)terminal 1 on alternator to ACC on ignition switch thru warning light- tho wires into and out of the warning light are 16ga (12ga)terminal 2 on alternator to BAT on alternator (14ga) SOL on ignition switch to small post on solenoid (12ga) BAT on ignition switch to (L) post on ammeter (12ga) IGN to + post on coil (12ga)light switch to (L) post on ammeter (12ga)cigar lighter to power out(always hot) on light switch
One thing i noticed when the alternator charges- the ammeter needle sits all the way at the top of the gauge at first, then drops down to about 2/3 up the gauge.
anyone have any insight into what the prob cold be? thanks alot.
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