Hi. I need some help. I have a l245dt that is overcharging. 12.8v. I have replaced the alternator, New regulator, new wiring, new battery cleaned the grounds Also added a temp ground from regulator casing to neg terminal in battery and still is over charging any help would be greatly appreciated
L245dt overcharging
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12.8 would be considered 'fully charge' at room temperature( 70*F).
When you say 'over charging' what does the ammeter register ?
When you say 'over charging' what does the ammeter register ?
For a 12V 40 Amp alternator I'd say it's spot on. Anything less than 12.5V or more than 15V would be an issue. Why do you think it's overcharging?
The only thing controlling the voltage is the regulator. Being a 40 year old tractor did you buy new or used parts?
If you can, check the voltage output at the alternator not the battery. Check the voltage at idle and full RPM's. Voltage should be similar or just slightly higher if the regulator is good.
Side note (you probably already know) - operating while overcharging will kill your new battery in short order.
I bought a new regulator. Even at idle it is charging at 15.3 but fluctuates between 14.6-15.3increase rpms and it increase which does point to the regulator . I am just trying to cover my bases before buying a new regulator. Yes I understand it will cook the battery Thank you
North Idaho Wolfman
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The voltage tests were done with a battery connected?
Are you using a digital meter?
Have you checked that meter to a know static voltage?
Yes battery was connected, and I’m using a digital meet that was tested on another tractor and was working properly
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more