HI I'm back after replacing the heder tank cap and topping up it just seems to 3/4 empty the header tank out of the overflow after a few miles and apart from a few drops onto the floor of coolent nothing changes, every few hundred miles i check and all is the same. 1/4 amount of coolent in the header tank.No overheating tempture completly normal.
has anybody experianced this?
Please just confirm that for more than 100 miles the level never drops below 1/4?
Could be that it runs this way, I had a Komatsu digger that did the same, expansion tank was always lower than the minimum mark and if you topped it up it just spat it out, just the way it was and it went on for over 14,000 hrs of service like that too!! But as I do not know intimately the header tank of a D2, I cant say as I know whether or not it actually drains right out the bottom of the tank or if the pipe to the rad is higher than the bottom of the tank?
I would suspect a leak, but from where I don't know?