Bruce
The original pickup tube should still be in place in the tank. Coachmen did not want to drop the tank to reach the top fitting for the Onan. Instead they just teeded into the engine fuel line.

All you should have to do is to move the Onan fuel lint to the top of the tank fitting. Take out the plug and put in a barbed elbow. Then remove the tee from the main fuel line and replace that with a straight coupler fitting.

Emery Stora

Yes, and possibly get stranded in the boon docks if you are running your Onan when dry camping. In that configuration as Chuck says, "you can run gen till no gas in tank".

Emery Stora

On Oct 16, 2014, at 9:56 AM, Charles Boyd wrote:

> Sir: Just a note: when you hook the tank pick up it will not allow gas to go to the gen if below 1/4 tank. By leaving the pick up where it is you
> can run gen till no gas is in tank.
> --
> C. Boyd
> 76 Crestmont
> East Tennessee
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Go ahead and assume that if you want but I have known of cases where (probably from going up and down hills) the Aux tank drained before the main tank and it is indeed possible to run out of gas.

In my own case several years back, I once was driving down the highway and my main tank ran out of gas. When I switched to my Aux tank I only got 10 miles before it also ran out. It was a long 5 mile walk for me to the next exit and it was at a time when there were no other cars on the road that might offer me a ride.

Emery Stora

Yes

And I am going to connect the tank drain plugs so there is only one tank

Fill every 200 miles and you do not even need a sender!!!!
Erf

On Thursday, October 16, 2014, James Hupy wrote:

> Sounds like a fuel management problem to me. To prevent these kinds of
> problems, my personal choice is to run my motor home on the top half of the
> fuel tanks. I can easily run over 300 miles on the contents, that is 6
> hours in the saddle. I don't cover much more distance in one sitting these
> days. Just finished up a couple of weeks rally trip to Manteca, Ca. then to
> Petaluma, back to Treasure Island in S.F. Bay, then home via I-5. Two trips
> over the same pass 4300 + feet. Fuel stop at Redding Ca. and Medford, Or.
> Averaged a bit better than 8.2 mpg towing a box trailer with 4 ea 1 ton
> front ends and my vendor stuff. Never even switched to my aux tank. Never a
> concern about running out of fuel either. Just the way I like to roll. Your
> experiences may vary somewhat.
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403
> On Oct 16, 2014 3:16 PM, "Joe Weir"
> wrote:
>
>> heh.
>>
>> As someone who just found out that 5 gallons into a dry set of tanks is
>> only enough to kill three batteries in the futile hope that the fuel pump
>> would suck something other than air, (before he figured out it was
> sucking
>> air) I share your concern about the design of the tanks and low fuel
>> levels.
>>
>> In the event that you have jostled the fuel in an unequal manner, it
>> appears you would be screwed either way. The coachman way, your reserve
>> tank
>> could be just about to run dry when you take off for home - switching to
>> reserve could still result in a long walk to the gas station.
>>
>> Sounds like an argument for switching the Onan to propane, or keeping the
>> tanks topped up as often as possible...
>>
>>
>>
>>
>> emerystora wrote on Thu, 16 October 2014 13:54
>>> Go ahead and assume that if you want but I have known of cases where
>> (probably from going up and down hills) the Aux tank drained before the
> main
>>> tank and it is indeed possible to run out of gas.
>>>
>>> In my own case several years back, I once was driving down the highway
>> and my main tank ran out of gas. When I switched to my Aux tank I only
> got
>>> 10 miles before it also ran out. It was a long 5 mile walk for me to
>> the next exit and it was at a time when there were no other cars on the
> road
>>> that might offer me a ride.
>>>
>>> Emery Stora
>>
>>
>> --
>> 76 Birchaven - New engine, trans, aluminum radiator, brakes, airbags,
> fuel
>> lines, seats, upholstery, adult beverage center... those Coachmen guys
> were
>> really thinking about us second hand owners...
>> Columbia, SC.
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-------
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I am helping an older friend service his 1977 Royal.
Currently I am replacing his rubber gas lines. I dropped the fuel tanks
and they were clean and rust free on the inside after setting for over 15 years.
What I need advice on is the fuel line to the Onan was plugged and than tapped
between the selector valve and electric fuel pump.
I did not see anything in the maintenance manual as to what or how the pick up
line to the Onan was fitted to the gas tank. Does anyone have any recommendations
as what fittings to use and what king of pick-up tube to use in the gas tank?
I have 3/8" and 1/4" stainless tubing as well as various lengths of 3/8",5/16",
and 1/4" Poly Amour.

Geez, I wish I'd known this when I had the tank down. Norris did the same, obviously. But I didn't know if there was a pickup tube below the plug or no. And it wouldn't loosen to look even with homemade kroil for a week, so I would have had to use the red wrench, which means I would of had to fill the tank with water, which means I would of had to dry it out when I was done,etc. So I left the tee in the fuel line, but I mgiht of moved it if I had known....

--johnny