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Old 06-13-2018, 12:04 AM   #1793
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When I was trucking, I bought a GenPac from Double Eagle Sleepers, it was a Kubota diesel motor, and a Marathon generator head, 8K continuous, 10K surge, mounted on the frame of my semi in a custom stainless box! It used the truck cooling system, via a pump, to circulate the coolant thru the big motor, radiator, so it pre-heated the big motor in the winter, when it was running all night! It supplied heat and electric to the truck sleeper! I and a lot of my buddies that had the big sleeper trucks had these generators, and it was not uncommon for them to run well over 60,000 hours, some as high as 90,000 hours! 1 in particular went to 94,000 hours before he got a new one!
I smile when I read that some one thinks that 3,000 hours is high!
We used ours every day, night, week, of the year! So using one is for sure a good thing! And we all used the same oil as the big motor, my case, Mobil Delvac 15/40, and changed it every 400/500 hours! We were using these generators every day, so moisture in the oil was not a thing!
Mine had over 30,000 hours on it when I sold my semi and retired, and it was still running as good as it did when they put it on! It used no oil, I replace/rebuilt the Alt. a couple times, as I replaced the all brass pump the circulated the coolant once, and other than routine maintenance, no troubles!
Rail!

Gen-Pac - Manufacturer from Double Eagle, usa
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Old 06-13-2018, 07:27 AM   #1794
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Quote:
Originally Posted by guardrail53 View Post
When I was trucking, I bought a GenPac from Double Eagle Sleepers, it was a Kubota diesel motor, and a Marathon generator head, 8K continuous, 10K surge, mounted on the frame of my semi in a custom stainless box! It used the truck cooling system, via a pump, to circulate the coolant thru the big motor, radiator, so it pre-heated the big motor in the winter, when it was running all night! It supplied heat and electric to the truck sleeper! I and a lot of my buddies that had the big sleeper trucks had these generators, and it was not uncommon for them to run well over 60,000 hours, some as high as 90,000 hours! 1 in particular went to 94,000 hours before he got a new one!
I smile when I read that some one thinks that 3,000 hours is high!
We used ours every day, night, week, of the year! So using one is for sure a good thing! And we all used the same oil as the big motor, my case, Mobil Delvac 15/40, and changed it every 400/500 hours! We were using these generators every day, so moisture in the oil was not a thing!
Mine had over 30,000 hours on it when I sold my semi and retired, and it was still running as good as it did when they put it on! It used no oil, I replace/rebuilt the Alt. a couple times, as I replaced the all brass pump the circulated the coolant once, and other than routine maintenance, no troubles!
Rail!

Gen-Pac - Manufacturer from Double Eagle, usa
Rail, I've installed a couple of the carrier power units on semi's and they work very well for what you described and run a long time. I think my brother had around 40k hours on his last one when he sold it and he has around 10k on the one I installed on his new tractor.

That being said, in an RV I think 3k is considered high based on the average usage. Most people simply don't use their gensets and those that do are hit and miss. When I mentioned ours was high @ 3k hours I was referring to the RV average but not what it was capable of under normal routine maintenance.

Had I not gotten out of racing I know ours would be well over 15k in the 11 years we have owned it now rather than merely at 3k. Even at that people cringe when they see I have 3k on it. Our last coach had around 9k and I will admit it was a turn off when trying to sell the coach as most are simply uneducated about power units. My aunt/uncle's Beaver was pushing the 20k hour mark when my uncle passed so the Onan's will go that far under normal operation/maintenance. Chuck's is also a testament to that. Many of the Prevost coaches we've looked at are well over 10k which seems to be more the average on them based on what I'm seeing, Powertech's seem to be the norm in them.

Mike
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Old 06-13-2018, 08:14 AM   #1795
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I also have installed many of the chassis mounted power units. Most were Thermo-King Tri-pacs, some were all electric units...
Seen many of them in excess of 40/50k hours.... along with the truck that would have in excess of a Million miles. Most people don't realize that it can only take 6or 7 years for a truck to rack that mileage up.

But as Mike noted, the difference is the for-pleasure gen-set don't really get used that often, and most times are under-loaded.

The truck mounted units run any time the truck engine ain't....most all had auto start, and will also start at a outside temp, low battery voltage setting.
Run them gen-sets!

Sorry to jack the thread!
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