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  1. L

    M37 light switch question

    I want to investigate what is involved in building replacement harnesses for my truck. I have no turn signals on it or anything extra. So I would need a layout which shows a schematic, lengths, connectors, etc. Does anyone have that sort of information? Thanks, Lenny
  2. L

    M37 light switch question

    I worked on the truck again today and although I can't read the number on the wire tag on the broken wire it must be the wire that feeds power to the switch, terminal F. Connecting it together with a crimp connector restored the lighting system. As I had mentioned previously it is an...
  3. L

    M37 light switch question

    The truck is a 1953. The gauge has the three colored bands, red yellow and green. I think that must be the voltmeter type, Is that correct? What is interesting here is that just like the switch shown in the PDF that was sent to me, my switch also jammed because the metal spring in mine...
  4. L

    M37 light switch question

    I was away for the weekend and I found the switch schematic and rebuild procedure this morning. This is going to be invaluable to me in troubleshooting the problem. Thank you so much. Lenny
  5. L

    M37 light switch question

    My truck has been sitting for awhile outside. I just replaced the fuel pump and got it going but I have no lights on anything. In looking at the schematic of the truck it seems like 24 volts is fed into the light switch from somewhere, (I can't tell where) but it appears to go in on terminal...
  6. L

    M37 fuel shut off valve question

    I kind of thought that. Just like a ball valve. Thanks guys. Lenny
  7. L

    M37 fuel shut off valve question

    There is a fuel shut off valve on the line that comes from the tank. This valve is located just to the right and just below the fuel pump. It is an inline valve with a handle, not unlike a sort of "ball" valve. The truck ha been sitting for almost a year now and I would like to try to start...
  8. L

    1953 M37 dumping gas into the crankcase

    I never heard of that practice as outlined in the page you sent, Plowboy. It must have been written a long time ago before multi viscosity oil. I remember using straight 30W back in the 60's. Did they even have multi back then? My memory really sucks. I honestly don't know about the...
  9. L

    1953 M37 dumping gas into the crankcase

    I just tested the vacuum section of the pump by cranking the engine with the ignition off and I get 15lbs at cranking speed. So Midwest military tells me that this rebuild will be easier because I won't have to open the vacuum side. So I pulled the pump. It was a bit crowded but we got it...
  10. L

    Frozen air tanks purge valves

    Or as suggested I could just wait for a warm day. We actually do have those occasionally even in the Winter. Thanks guys for all your input. Best regards, Lenny
  11. L

    Frozen air tanks purge valves

    I think that I like the idea of trying to keep the valves open during periods of non use. The valve openings point down so hopefully this would lead to a natural draining of them and keep them free of ice. I could weight the cables to keep tension on them and keep them open. I would just worry...
  12. L

    Frozen air tanks purge valves

    A space heater really isn't an option. I have no garage and the truck sits outside, and this is New Hampshire. I'd have to position that heater really close to effect any change and I wouldn't feel comfortable doing that. We had 13 degrees F last night and we're just coming into April. I...
  13. L

    Frozen air tanks purge valves

    I retrofitted the air tanks on my truck last year with the military kit that comes with two brass cable operated air valves and two cables. Through last Summer and Fall they worked flawlessly, eliminating my having to crawl under the truck to do this. This past winter however I took the truck...
  14. L

    Relationship between vacuum wipers and fuel pump

    Yes, that makes perfect sense. I spoke to Dan at Midwest Military a short time ago. He tells me that the vacuum side of these pumps rarely fails. So I think what I'm going to do is pull the pump and see if I can manually test the vacuum section on the bench. If that looks good then I'll order a...
  15. L

    Relationship between vacuum wipers and fuel pump

    So Alan if I'm understanding this correctly, the vacuum originates at the intake manifold. It is then plumbed to the OUTPUT of the vacuum section of the military fuel pump. Then from there the INPUT of the military pump goes to the wipers? If that is what is going on then that would seem to...
  16. L

    Relationship between vacuum wipers and fuel pump

    I thought that the wipers worked off intake manifold vacuum. Now I'm learning that the "vacuum"section of the fuel pump has something to do with this too. I have also heard that some people have gone to civilian fuel pumps without losing much in the wiper function. Can someone please explain to...
  17. L

    1953 M37 dumping gas into the crankcase

    I forgot something. I heard mention of a "fuel side of the pump". I have since learned that there is also a separate vacuum side that operates the wipers too. Is this correct? And if so does that, or rather should that be rebuilt also? I also thought about trying to use a civilian pump but then...
  18. L

    1953 M37 dumping gas into the crankcase

    Last Fall I took the truck out for an 8 mile ride. It was point A to point B with no stops. The engine seemed to be running OK at driving speed. I got to my destination and as I was pulling into the parking lot naturally I slowed up and I became aware that the engine was running poorly. I...
  19. L

    M37 front seat and plywood base

    He Gunny I was a bit worried but the package finally came two days ago. Post office efficiency seems to drop proportionally as the holidays approach. This time of year is always worse than "normal" which isn't saying much. I think that they still must run pony express up here in the Northeast...
  20. L

    M37 front seat and plywood base

    Hey Gunny Sorry for the delay in responding. I took a bad fall 10 days ago. (Of course when you're 70 every fall is a bad one). Bruised my ribs pretty badly and messed up my back. So I've been a bit out of it for awhile. I had planned to email you before this because I was wondering but I...
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