Re: NH - Coolant leak
Wow John, one post and you went from silver to gold - congratulations!! The bulletin that my dealer had, said it applied only to the Class III boomers, but personally, I think it's wrong. My old 1720, circa 1988 had the same problem and my friend's 1997 1720 also has the problem. NH says the Class III's are affected because of the heavy duty flow-through radiator design, but I honestly think that's just some spin. Yes, the Class III might be affected more because of this, but on any of the engines, if the drain is to and from the same points, then the thermostat is bypassed. In my case it goes all the way back to the 1988 Ford 1720. If I had a non-deluxe boomer I'd be especially concerned because you have no idea if the engine ever get up to normal temp. If I was in doubt, I'd either get the NH block-installed valve or put one in like shown in the post. I'll have to get a photo posted of the NH valve when my tractor comes back from the 50 service.