Today I decided to clean and water the two six volt batteries in the motorhome. We had a problem in Mexico when corrosion actually isolated the cable going from the batteries to the generator starter relay. It was a strange problem in that it allowed current to pass through the connection at rest but as soon as I tried to start the generator, I lost conductivity between the ring tip cable connector and the battery. It was a very strange condition and one that I never saw before. The Onan mechanic in Puebla sanded the terminal and got everything working but I had to go over all the connections.
I took everything apart and sanded all the contact points until I saw shinny copper. At this point I should have applied battery grease (Vaseline would have worked but I had nothing) and put everything back together. I will have to take it apart again when I get some grease.
If you do this yourself, and you should do it at least once a year, take care to not mix up the wires. Do one terminal (pos or neg) at a time and keep track of your wires. There are many of them, in my case five on each terminal. Having one or two wires left over at the end of the job and having no idea if they belong on the pos or neg is no fun and is not easy to sort out. I use a zip tie through all the rings to keep them together.
Oh yes, wear clothes that already have holes in them from last time. I did not remember to do this and I now have six outfits reserved for battery work!
Well, my day's work is done! Now to sit back and wait for the BC Lions vs. Toronto football game at 4:30.
Test video
7 hours ago