Deuce Arctic Heater Info Compilation Thread

builder77 · Nov 17, 2007

cranetruck · Nov 18, 2007

Ethan, a full blown kit includes hard top, hood and radiator covers, cab insulation, alcohol evaporator, personnel heater, coolant and oil pan heater. That makes a total of two separate fuel burning heaters, the one for the engine is not used when the engine is running. The battery box is also replaced with a coolant heated one (at least on the 8x

.
There are pictures in most TMs, but you are right, don't think I have seen one complete set of instructions. The manuals for the 8x8 come close, but all three manuals are needed, the -10, -20 and the -34.
There is also a kit for the cargo compartment for the deuce, got a Vintage Video showing it....

builder77 · Nov 18, 2007

I guess most people get most of these goodies from other kits that do a partial job. I am trying to mainly answer questions about the personnel heater, and the coolant/oil heater. I must be looking at the wrong TMs as the one I found has no pics.
-The fuel burning personnel heater on the M35 goes where the more common M35 coolant personnel heater is located, correct?
-Where is the fuel burning coolant/oil heater mounted?
-Does the fuel burning coolant/oil heater contain its own coolant pump, or does it need an external one?
-If a M35 was equipped with both the common coolant run cab heater and the coolant/oil heater would there be any reason both could not be run to heat the cab when the engine is shut down? The only worry that I can think of with that is exhaust gases being pulled into the cab.

cranetruck · Nov 18, 2007

These images from the 1965 -10 manual may help answer some questions.
There is very little chance of getting exhaust fumes mixed with the hot air, the systems are well separated.
The "emergency" shut down switch shown in one image is only used in case of chemical/nuclear attach when the air is contaminated. Power is shut off to the fan. Normal shut-down takes 2 to 3 minutes as the heater runs to purge itself of fuel....
One fuel pump is used with shut-off cocks so that only one heater is served at a time. The engine heater is operated first to warm the engine and then shut down. The fuel shut-off valves are next set to run the personnel heater. It only takes seconds to heat the cab with this unit.

m-35tom · Nov 18, 2007

cucv coolant heater has its own coolant pump, deuce relies on convection.

builder77 · Nov 19, 2007

Does convection actually work well in a deuce? I would imagine a pump even if external would be prefered even if it cost a few more amps. I was looking at my battery compartment compared to the above picture of the mounted heater, and it certainly does not look like there would be enough room for both the heater and battery box.

cranetruck · Nov 19, 2007

Ethan, the batteries are moved into the crew compartment, under the companion seat.
I'll check on the convection thing, heating the oil pan will let warm exhaust spill out and warm the rest of the engine too.

m-35tom · Nov 19, 2007

some engines do not have a water pump and rely on convection to circulate water through the radiator for cooling. this is probably the main reason the heater was mounted low in relation to the water jacket of the engine.

jwaller · Nov 19, 2007

cranetruck said:
Ethan, the batteries are moved into the crew compartment, under the companion seat.
I'll check on the convection thing, heating the oil pan will let warm exhaust spill out and warm the rest of the engine too.

this is interesting. is the box sealed and vented? do you have a pic or location of a pic for this. I'd like to see how it was done. might do this to mine for some strange reason.

builder77 · Nov 19, 2007

For me the battery relocation is a big problem, so I would have to find another solution. I plan to remove the bench and replace it with a spring ride, so I lose that space where the batteries could go. I would think of making a more compact heater installation, and perhaps making a smaller battery boxes.

On the other hand relocating the battery could free up a second storage compartment where the batteries were. I would make an enclosed box for passenger compartment with a drain/vent line going through the floor.

cranetruck · Nov 20, 2007

About the battery box, it may be relocated to the truck bed. It was done on the xm757 8x8 when they decided to go fom 2 to 4 batteries. Note box behind the rear bulkhead, passenger side on the platform....

builder77 · Nov 20, 2007

Well I have been poking at this for a few days now, so I thought I should mention I just won one of these units. Just the heater though, so I will have to figure out the installation. It takes the 5 plug cable. I am working on a cable now, but don't yet have any leads on the controller. I currently have the 5 plug controller made by Benmar MP that has one on/off switch, a light indicator, and a resetalbe breaker, but it does not match the one above in Bjorns pics. Anyone have a manual for this thing?

South Wind Coolant Heater Model 939J24
Total Output 23,000 BTU
Coolant Output 15,000 BTU
Army No 11601698
Fuel Pressure 3 lbs min. 15 lbs max
Negative Ground Only
Amps 11 (Start) Run (1.5)
Serial # 8815

cranetruck · Nov 20, 2007

Good purchase Ethan. That heater is shown in my 8x8 manual with a separate pump to circulate the coolant (image below).
You need a controller with a 5-pin connector on the back plus a separate lead, which goes to 24 vdc.

m-35tom · Nov 20, 2007

heater wiring is shown in the manual, that looks like the controller as the others have high / low

gimpyrobb · Nov 20, 2007

Anyone have any of the controllers? It is the last piece I need. Mine is not for coolant heating, so I guess I would need the dual speed one.

builder77 · Nov 20, 2007

The pic that Bjorn posted above clearly shows a controller labeled as the engine heater. It show one switch being HI/LO, a light, and then a START/OFF/RUN switch. Once I have the heater at home I should have a better idea on this though as it appears to have the wiring diagram on the data plate. The wire I hope to get has the 5pin connector and a seperate wire, so I guess that is the one. I will have to keep my eyes open for a 24V coolant pump. My idea is to use this to heat the cab at a reststop perhaps, so that I can turn off the truck, and imagine forced coolant flow would be more reliable then convection.

builder77 · Nov 21, 2007

Ok I apparantly have TMphobia like many around here. I overcame my fear of 700-1500page manuals with a little help from some of the guys last evening. Wow! I think I have most the information I need for this. I have the routing of wire/exhaust/fuel, needed controllers, locations, etc. The only thing that I would still like to find is the manual from South Wind for the actual heater. Bjorns pics of the needed controller are correct where it needs a HI/LO and a START/OFF/RUN switches.

cranetruck · Nov 21, 2007

Ethan, why don't you plan a trip to my place, I'm only a couple of hours away and I can show the projects you are working on as installed on my vehicles, the HIAB, the alcohol evaporator, the fuel burning heater etc...
I'm here most of the time generally speaking. Do a mapquest for zip 24120.

Trango · Nov 21, 2007

Hey guys,

Could anyone be so kind as to post a quick description of how these run? Meaning, (on the convection ones) does the fan come on first, and then the fuel runs for a bit, and then the ignitor come on? Also, what is the shutdown sequence? Pure observation would work for me.

Also, do you need a seperate fuel pump to run these, or are they happy to be on the return line from the engine?

Thanks a ton,
Bob

cranetruck · Nov 21, 2007

Bob, it works like this, first push the light on the controller to make sure it is working and there is voltage.
Next hold the momentary contact switch in "start" position, it will turn on the fuel pump, the blower (runs at reduced speed) and the ignitor. The "HI/LO" switch should be in "LO".
Some of the fuel is soaked up by a wick, which is close to the ignitor (works like a cigarette lighter in a car) and some of the fuel is vaporized. After about 30 seconds you'll see smoke from the exhaust and soon you hear the fan increasing speed and the light on the controller comes on as a flame has been detected. Now you'll flip the start switch to "RUN" position and you have hot air. Use "HI" for more heat.
To stop, flip the "START/OFF/RUN" switch to "OFF". The fuel pump now stops, but the fan keeps running until the flame goes out (all automatic) and after 2 to 3 minutes the units shuts down.
It can be restarted immediately if desired.

The "Emergency off" switch shuts power to everything and the unit should not be restarted right away, since an abnormal shut-down took place, fuel is still in the burner.

The heater needs its own fuel pump since it's under control of the heater. It also has its own fuel filter.
Exhaust is never mixed with the hot air, two separte pathways thru the heater.

Deuce Arctic Heater Info Compilation Thread

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