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07-20-2011, 07:20 PM
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#1
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Mini-Skoolie
Join Date: Nov 2010
Posts: 13
Year: 1996
Chassis: E350
Engine: 7.3l Powerstroke Diesel
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Trying to turn off heater...
Hi All
I'm trying to figure out how to disable the rear heater in my shuttle bus. My bus is a partially converted '96 e350 shorty with a 7.3l powerstroke. Manufacturar is Thor; brand is Eldorado. The rear heater seems to be stuck on; though the fan is stuck off. Both switches are on the dash, part of a panel that looked like it was added by Eldorado. The fan switch is electric. The other control is a pneumatic switch. I presume it's circulating cooling fluid from the engine, and that there is a valve that shuts it off when not in use. Does anyone know where I might find a breakdown of this system? Has anyone ever done this before?
Cheers,
Tim
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07-20-2011, 08:15 PM
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#2
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Bus Nut
Join Date: Apr 2011
Posts: 801
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Re: Trying to turn off heater...
Look for a cut off valve around the heater box, front and rear heater box, may have to pull a cover to see it. look around the engine compartment. Most buses have a cutoff valve to stop the hot water going to the heater. may be a ball valve, or even a faucet type, round one like the outside water faucet on the house.
good luck, sure do not need heat this time of the year.. someone with a short bus should be able to tell you more...
__________________
GreyEagle
Roll - On...
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07-20-2011, 10:45 PM
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#3
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Bus Crazy
Join Date: Oct 2009
Location: Moodus, Ct.
Posts: 1,062
Year: 1996
Coachwork: Champion
Chassis: Ford e-450
Engine: 7.3 Powerstroke
Rated Cap: 14
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Re: Trying to turn off heater...
look underneath-you'll see 2 hoses running down the left side of the frame-it will probably switch back+forth from rubber to metal. If there's no shut off valves, you can just loop the 2 to each other. I took 2 pairs of needle nose vice grips + squeezed the the rubber hoses to prevent anti freeze from going everywhere + cut the metal lines--then took a piece of 5/8" heat hoses + looped the 2 metal lines together. I had to do this right after i got the van-there was an anti freeze leak underneath-one of the metal lines had a rust hole in it.
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07-23-2011, 04:06 PM
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#4
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Mini-Skoolie
Join Date: Nov 2010
Posts: 13
Year: 1996
Chassis: E350
Engine: 7.3l Powerstroke Diesel
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Re: Trying to turn off heater...
Grey Eagle:
I don't think there is a manual shutoff valve, though I'd be willing to look. I think the pneumatic control is going to a valve somewhere; it's possible that there is a manual shutoff in addition, but it seems unlikely. I guess I could trace the pneumatic lines, but if I just knew where to look for the valve it would make things much easier. BTW, the bus is at a rented parking spot right now, over an hour away, hence my inability to go out and look it over whenever I want. When I'm at the bus again though, I'll take a look for a shutoff.
sdwarf36:
Well, I don't want to entirely disable the heater, but I appreciate the input, and will keep it in mind as a last ditch possibility.
Thanks again everybody!
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07-26-2011, 04:03 PM
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#5
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Bus Crazy
Join Date: Apr 2010
Posts: 1,485
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Re: Trying to turn off heater...
best way is to find the coolant lines under the bus and follow them to the source!
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07-27-2011, 02:51 PM
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#6
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Mini-Skoolie
Join Date: Nov 2010
Posts: 13
Year: 1996
Chassis: E350
Engine: 7.3l Powerstroke Diesel
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Re: Trying to turn off heater...
Ascend:
I really appriciate you taking the picture; the shutoff valve you're talking about its the lever on the rubber pipe in the center of the picture, right? I'll take a look for it when I'm at the van again and see if I have one. Also, thanks for the pointer on the fans; I'll try that test when I get a chance. When you say the cutoff would disable the entire system, do you mean just the heater, or the fan/AC as well?
Stuff:
Heh, I guess that's what I might end up doing; seems like it's hard to know exactly what setup you have with these vehicles...
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08-04-2011, 06:01 PM
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#7
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Bus Crazy
Join Date: Oct 2004
Location: New England
Posts: 1,009
Year: 1993
Coachwork: Ward Genesis
Chassis: International
Engine: DT466/MT643
Rated Cap: 77
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Re: Trying to turn off heater...
Quote:
Originally Posted by timmygyu
Hi All
I'm trying to figure out how to disable the rear heater in my shuttle bus. My bus is a partially converted '96 e350 shorty with a 7.3l powerstroke. Manufacturar is Thor; brand is Eldorado. The rear heater seems to be stuck on; though the fan is stuck off. Both switches are on the dash, part of a panel that looked like it was added by Eldorado. The fan switch is electric. The other control is a pneumatic switch. I presume it's circulating cooling fluid from the engine, and that there is a valve that shuts it off when not in use. Does anyone know where I might find a breakdown of this system? Has anyone ever done this before?
Cheers,
Tim
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On the Eldos I drove (a 1997, a 1999, and a 2002), the rear heat shutoff valve was on the left side, underneath the vehicle, generally right behind the driver's seat, just in front of the side-mounted A/C plumbing.
__________________
Jarlaxle
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Optimism is a mental disorder.
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