Join Date: Jun 2010
Location: Central california
Battery overheating question
OK, I am new to this form and just put a little introduction on the site. I am hoping that someone can help me with a problem. I have a 1988 KLR that has become more of a project then i wanted but I am into it to much to just ditch it.
I just recently had a trip interrupted by a battery that overheated and died. I was going over the Sierras at Sonora pass and had been riding for about four hours, for the last hour, when I had stopped i had noticed the smell of rotten eggs but just didn't put things together that the battery was the source. The lights went on on the dash, and when i pulled over to check it out the battery was tost.
The logical culprit was the charging system but when I checked it I found that it seemed OK. Charging voltage at idle and at speed was 15-16 volts and according to my Clymer manual was OK. The voltage regular/rectifier checked OK also. By the way, this was a new maintenance free battery.
One thing, when I took the tank off to check thing out I found that one of the bolts on the fan had come off and I could see that the fan blades had been hitting something, could have even stopped rotating.
I was able to push start the bike and go back down the hill into Sonora and got a new battery and decided it best to go home rather then go on the trip to ride dirt roads in eastern California. It took four hours to get home and everything seems OK, the new battery is still good.
If that fan got stuck and didn't turn would that have caused the problem. with the loose bolt fixed and the new battery the fan runs fine now.
A little history here. the fan is a replacement for a fan that went out last august, also with basically the same ramifications. The original fan get's loose on the shaft and jams, burns out the fan motor and the battery also dies. Each time the lights go, headlight bulb and turn single bulbs get burned out but the fuses don't blow.
Any ideas would be appreciated.