struggling to resurect an m37

[Gordon Maney]

The window fogging issue is common unless you have a heater that picks up outside air rather than simply recirculating air that is already in the cab. A defroster will help by having a forced air flow directly on the glass, but still won't be great unless you are drawing outside air.

Charles, did you get my email? I am wondering if I have the wrong address.

[Gsmith]

FWIW you can make a cheap defroster out of pvc pipe, with slits cut in it with a circular saw, and mount it at the bottom of the glass. Be prepared with a respirator because it makes a big mess, pvc dust flying everywhere. Run some kind of duct from the heater to the pvc.

[W_A_Watson_II]

FWIW you can make a cheap defroster out of pvc pipe, with slits cut in it with a circular saw, and mount it at the bottom of the glass. Be prepared with a respirator because it makes a big mess, pvc dust flying everywhere. Run some kind of duct from the heater to the pvc.

What size of PVC did you use?

[Gsmith]

I used 1", it's on a Willys CJ3b Jeep. 1 and 1/2" or maybe 2" would probably give more air flow and work better yet for an M37. I had gotten the idea years ago from someone else saying they did it.

[Gordon Maney]

....or drill holes.

[W_A_Watson_II]

I'm planning on using 1.5" and feed it with the two 1.25" hoses I have connected to my under seat 40K BTU heater.

I liked the saw cut slot idea, might do that rather than the holes.

[Gsmith]

We'll be anxiously waiting to hear how it works for you!

[gusbratz]

this should make you laugh.

i came up with a solution, I keep a burnzomatic on the seat beside me and just fire it up and defrost as neccary, works great. then the window is warm enough that it stays clear for a half hour or so. I built a little candle holder for the dash area. I call it my amish defroster. we will see if it works as good as the burnzomatic.

[Bruce]

Another Approach

I'm planning on using 1.5" and feed it with the two 1.25" hoses I have connected to my under seat 40K BTU heater.

I liked the saw cut slot idea, might do that rather than the holes.

Will, For what it's worth......... When you do the cut, try and angle the curf so the angle will be directed at the windshield, that is my plan, Bryan N Oregon did his that way.

[JStinson]

i came up with a solution, I keep a burnzomatic on the seat beside me and just fire it up and defrost as neccary, works great. then the window is warm enough that it stays clear for a half hour or so. I built a little candle holder for the dash area. I call it my amish defroster. we will see if it works as good as the burnzomatic.

We need pictures.