Cat overcharging

[Old Growth]

Dozer overcharging.
We have a 1972 D4D Cat that is a Mitsubishi/Japan made tractor. It has Mitsubishi electrical/alt/gen on it.

While running it today the ampmeter was higher than usually and once I shut her down, I noticed the finals on both sides were wet. After better inspection, I determined that the batteries were boiling and weeping down onto the finals.

Any pointers on what I should be looking for or looking at first?

Thanks

 

[Vetech63]

It would be nice to get a voltage measurement to see what your current charge rate actually is.

 

[Old Growth]

It would be nice to get a voltage measurement to see what your current charge rate actually is.

I can do that next time I’m over there.

 

[Delmer]

12 or 24V? get the voltage measurement at the batteries before you start, then at the alternator with the key on, engine off. Then at the alternator with engine on. All the terminals on the alternator. If it's 24V, get each battery's voltage also.

 

[ozarkag]

Any pointers on what I should be looking for or looking at first

Alternator

 

[Tyler d4c]

And here I thought this was going to be a thread about the rate dealers charge!