Oh wow, good info! I very much doubt the engine is getting past 170-180. I can just touch the hoses for a second then its too hot! However, judging by the heater output, it didnt even seem like the engine would have been that hot. From what i have read, these engines dont want to see the heat because they crack the heads. 235 seems hot already. I guess there are no adjustable parameters to lower the shutdown temps?
I would have thought warning and shutdown @15 degrees sooner, I can't say that that how it is on 20 different loaders, but thats what I found.
Could you borrow a infared heat test gun from someone? they are very handy for testing these problem. Most every garage has them and many home garages too. Maybe trailer your machine there and borrow it??
We always figured about 150 is the hottest you can touch for a 2 to 3 seconds.
You need at least 180 if you want heat imo.
The cracked heads on these engines is mostly do to poor maintenance or coolant loss. These machines end up working in dirty environments that plug rad air flow and they get cooked if the operator in not paying attention. Thinks that why the boss came out, for these situation.
You could also put in a common auto 2” guage and unhook the boss sender until you get it sorted out. Note you glow plugs will cycle , max time, every start if you unhook the sender, so you may want to pull the glowplug relaymto prvent burnout.
Ken