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VMSpc saved the day
I have been running VMSpc on a small 10″ laptop for the last 6 years. It provides real-time DDEC parameter read outs, allows you to set up alarms and keeps track of max values during a run. I typically don’t pay much attention to the display unless an alarm goes off.
Last weekend, I started up the coach, checked the belts after air pressure was up and went on my way. Twenty minutes later, on a two lane mountain road my temperature alarm goes off (207 deg). I have never seen temperatures above 202 degrees before. Not good. I did just change the coolant – maybe an airlock. I get off the road as quickly as I can and check the engine. The fan is not turning. Then I see the ribbed belt laying next to the pulley. When I checked the belts I only looked the the three belts going to the fan gear but not the belt going from the fan gear to the hub. This was the first time that belt was thrown during start-up. Released air pressure, put belt back on hub and we were good to go.
I’m normally pretty good about scanning my analog gauges but this time I was focused on the twisty two lane highway. Sometimes it is good to have a backup.
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