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Old 07-27-2018, 06:44 PM   #1
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Year: 2004
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Engine: CAT 3126 7.2L
Fuel tank size

We have a 2004 Thomas 40 front engine flat nose with CAT 3126 and MD3060 transmission

I believe the gas tank is 100 gallons? But weve never filled it up.

Were leaving on a 2100 mile trip and will be filling it up for the first time and curious if that sounds right that we probably have a 100 gallon tank?

If so how much actual fuel is feasible to squeeze into it? 90? 85?

Thanks in advance
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Old 07-27-2018, 07:10 PM   #2
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Mine is an RE CAT 3126 3060 13 window. It has 100 gallon tank. If it were empty Im guessing you could fit a full 100 in, but I usually fill when it will take about 60 gallons - in my case somewhere around 500 miles from last fill up.
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Old 07-27-2018, 07:10 PM   #3
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If the tank is accessible from underneath, you could measure its height, width and depth and do some math?
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Old 07-27-2018, 07:21 PM   #4
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Quote:
Originally Posted by Huskerbus View Post
If the tank is accessible from underneath, you could measure its height, width and depth and do some math?


Man why didnt I think of that?!?!?
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Old 07-27-2018, 08:07 PM   #5
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No matter how many gallons you find it takes, don't fill it right up. The fuel foams and needs expansion space so if you have 100 gallons maybe 85-90.
And don't let it get so low that the fuel can't get picked up and pumped.
Bleeding is no fun as many have had to do.


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Old 07-27-2018, 09:50 PM   #6
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Quote:
Originally Posted by Mgulley82 View Post

I believe the gas tank is 100 gallons? But weve never filled it up.

Your Cat will get awful indigestion if you try and fill it with gas. . . .

Like BlackJohn said, watch out for foaming when filling diesel. The fuel foams in the filler pipe (like a root beer float), and sometimes it will fill the pipe. (Ford pickups from 2000-2006ish often have this problem.) Sometimes the fuel pump nozzle detects the foam, thinks the tank is full, and shuts off. So don't over-fill the tank, but if you know it was down to a quarter, and it only takes 6 or 10 gallons, you've probably got a foam problem. Wait a few minutes, and slow down your fill speed on the pump a bit.
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Old 07-27-2018, 10:01 PM   #7
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My Genesis has a 60 gallon tank and the fill spout is mounted at such an angle to prevent "filling" the tank. When it starts coming out the spout there is still 3-4" of airspace in the tank. If I send the flip bus to salvage I have to siphon more than 3/4 of a tank.
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Old 07-28-2018, 10:41 AM   #8
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Perhaps you could email or call Thomas and get a copy of the build sheet for your bus?

That would tell you a lot about your bus including the fuel tank info.
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