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Cab heater W/ Reo OA-331 enigne.

Kaiser67M715

Member
699
26
18
Location
NH
Hi all,
I have been thinking of how to put in a cab heater; really just something to keep frost and fog off the the window, as I don't plan to run it too much in the colder weather.

I'm just wondering if these early trucks came with an arctic kit that would supply an engine coolant supplied heater box. If so, any info on an install would be nice, so I can figure out the inlet and outlet on the engine. I didn't see anything mentioned in the parts manuals, or service maintenance manuals I have, for either a coolant supplied heater or a fuel heater. I assume the box would have been originally installed on fender then a hose routed through the firewall. I plan on trying to mount a small box inside the cab somewhere, and make my own piping. I guess what I really need to know is how to properly hook up the lines to the engine.

Thanks
 

rcflyer70

Member
142
5
18
Location
Lancaster, Kansas
I've owned a M35 gasser for almost 25 years but never bothered to learn what REO engine it has. If this is the same in the 2.5 ton, I have the coolant heater in mine. I can get pictures and send them to you tomorrow.
 

stb64

Member
162
15
18
Location
hohenfels germany
The best manuals for gasser owners are the 1965 series of -209 TMs. Hard to find today, unfortunately. I got most of mine 25-30 years ago.
Even harder to find are the oldest, 1950s 9-819, and 9-8022 TMs.
The later, 1980,-81 series -209 TMs work, too, but the pictures suck.
The latest -361 series TMs are for multifuels only.
25nov2016 005.jpg25nov2016 004.jpg25nov2016 003.jpg25nov2016-2 002.jpg
 

Kaiser67M715

Member
699
26
18
Location
NH

Could you possibly get a better photo of the bottom left two pictures? that would be really helpful, I think I located the right plug, but I'm not positive. I have several 1955 manuals, and while some do mention a cab heater, non actually describe install. I am positive I have the 8022, but I seemed to have misplaced it. And I have the 9-819 1952 version, this one I have looked through and found reference to, but no pictures for install, or remove procedure for the kit.

Thanks
 

Kaiser67M715

Member
699
26
18
Location
NH
Awesome thanks! Looks like I was looking at the right plug then, I think I will be using a small Mack heater, it's about 8x8x10 with two outlets, a little less "authentic" but it should work great at keeping the Windows clear on colder mornings.


Sent from my iPhone using Tapatalk
 

DutchmanZ

Active member
Steel Soldiers Supporter
97
236
33
Location
Pantego, NC
Awesome thanks! Looks like I was looking at the right plug then, I think I will be using a small Mack heater, it's about 8x8x10 with two outlets, a little less "authentic" but it should work great at keeping the Windows clear on colder mornings.


Sent from my iPhone using Tapatalk
I know its been a few years but did you ever get the heater installed? Curious about what you went with since I also have a gasser.
 
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