One of our 4x4 Stampedes quit today about halfway through a battery (its only a month old, about 5 packs through it).
Taking off the motor cover it was easy to see that the motor bearing had gone, and was rusty. Now I was, then dry (with compresssed air) and wd-40 most of the truck after wet running (snow), but I dig inside. The rest of the drive train appears to be all OK and runs smooth. Anyways, taking apart the motor this is what I see:
Untitled by ishbits, on Flickr
I was going to replace the bearings, but that looks a bit shreded inside to me.. Am I right?
Anyway to seal off this part of the truck a bit more? Otherwise I'll be taking off the cover after each wet run to give it a shot of WD-40..
Oh.. Somewhere else I read that WD-40 slowly wears out the plastic. Is there a WD-40 alternative that will displace the water, but not eat at the plastic?