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Old 06-12-2013, 07:46 PM   #1
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Exercising engine and generator?

Does any one drive there class A every month or should I just run engine and generator. Please advise
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Old 06-12-2013, 11:55 PM   #2
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We don't drive the motorhome every month, but we do exercise the generator under load for an hour or so. We do try not to let the rig sit for longer than a couple of months without a run down the highway, though...just to get things moving! Plenty of rigs sit stationary for months at a time, however.
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Old 06-13-2013, 12:11 AM   #3
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Yes, I do drive every month and exercise the generator at least 2 hours each month. If I am in a campground I can drive away and come back after a 10 mile or longer drive. The drive is good for me also so I don't get "rusty" from not driving.
I recently changed my generator oil, etc. as it has gone over 1500 hours and our mileage is 47136 miles at 4 years of ownership.


Quote:
Originally Posted by Seagrouch View Post
Does any one drive there class A every month or should I just run engine and generator. Please advise
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Old 06-13-2013, 12:15 AM   #4
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2200 hours on genset and runs very well. Exersized every month. I drive the coach monthly to a short weekender.
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Old 06-13-2013, 12:17 AM   #5
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Cummins says not to bother starting the engine if you can't drive it long enough to thoroughly heat it up (30 miles at highway speeds).
The generator needs to be run with at least a 50% load on it. This "burns off" water vapor that may have gotten to the windings which is the main reason for gen failure.
I run one heat pump on cold and the other on heat, then, after about a hour, I reverse them.
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Old 06-13-2013, 01:23 AM   #6
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Quote:
Originally Posted by SarahW View Post
We don't drive the motorhome every month, but we do exercise the generator under load for an hour or so. We do try not to let the rig sit for longer than a couple of months without a run down the highway, though...just to get things moving! Plenty of rigs sit stationary for months at a time, however.
ditto
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Old 06-13-2013, 04:29 AM   #7
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Yes... the genny is run a minumum of an hour at more than 50% load every month. In the winter season, I also take the MH out once a month for a ~50 mile run.
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Old 06-13-2013, 08:12 AM   #8
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Hi Seagrouch,
Let the engine sleep between outings (gas or diesel). Run the generator at 50% or more load once every couple of months for about an hour.
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Old 06-13-2013, 08:55 AM   #9
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I had fallen victim to the PO not properly maintaining and exercising the genset and chassis engine, because it was stationary for 6 years.

I can tell you that I will *not* be making that mistake, regardless of where it's stored. Although the genset now starts, it does so, with gentle prodding and finesse when its cold. Once you get it beyond about 5-7 stall out's without a load on it, it will run and stay running. Then you have to let it run for about 5 minutes before you can kick the rooftop AC on. When you do, the genet slows to nearly a stall, then recovers and will run fine after that....

I am trying to run 80+ gallons of "old fuel" out of the tank, before administering Seafoam and $300 worth of fresh gasoline. I have about 20 gallons left to go. I just hope gas prices let up a little while I wait.
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Old 06-13-2013, 09:25 AM   #10
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Quote:
Originally Posted by jnp_macklin View Post
I had fallen victim to the PO not properly maintaining and exercising the genset and chassis engine, because it was stationary for 6 years.

I can tell you that I will *not* be making that mistake, regardless of where it's stored. Although the genset now starts, it does so, with gentle prodding and finesse when its cold. Once you get it beyond about 5-7 stall out's without a load on it, it will run and stay running. Then you have to let it run for about 5 minutes before you can kick the rooftop AC on. When you do, the genet slows to nearly a stall, then recovers and will run fine after that....

I am trying to run 80+ gallons of "old fuel" out of the tank, before administering Seafoam and $300 worth of fresh gasoline. I have about 20 gallons left to go. I just hope gas prices let up a little while I wait.
I wouldn't burn one more gallon of that old fuel without treating it first with Sta Bil or Seafoam.....

Another thing, the closer you get to the bottom of the tank, the more crud and potential contaminates can get into your fuel system. Dump a full treatment of Sta Bil in it and go fill it up. The generator will stop running at around 1/4 tank or so. Also a full tank of fuel will dilute the bad fuel down a little, and the Sta Bil/Seafoam will help.
Hope this helps!
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Old 06-13-2013, 09:34 AM   #11
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I run my genny about an hour a month and drive the MH every month.
It might just be 10 miles or so during the off season, but I still drive it (during good weather windows) to get the tires/eng/xmission warmed up and to burn some fuel so it doesn't go bad. I also use StaBil.
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