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  1. Suprman

    M931A2 starting problem

    I have never had any luck fixing starters. The smart man would replace it with a new one and be done with it. They are available. Will
  2. Suprman

    M931A2 starting problem

    The main battery positive cable comes off the batteries and goes right to the starter solenoid. Power for most everything else branches off from there. There is no "protection" of any kind like a fuse or breaker. When you swap the starter you will want to disconnect the positive from the battery.
  3. Suprman

    M939a2 overheating/excessive coolant pressure

    Not much else other than combustion pressure one way or another that's going to cause your symptoms.
  4. Suprman

    M931A2 starting problem

    If you try to start the truck, and the starter solenoid engages but the starter does not spin, then your starter is bad. There are contacts inside the solenoid that close when the solenoid engages and "throws" the starter gear forward. The contacts go bad inside if you open it they will probably...
  5. Suprman

    M939a2 overheating/excessive coolant pressure

    I don't think the compressor makes that much pressure run the air system properly and pressurize the coolant system that much.
  6. Suprman

    What have you done to your 5 ton this week?

    I bought a large lot of them they are listed in the classifieds. The bolt is in tight I dont know why it looks like that. Will
  7. Suprman

    What have you done to your 5 ton this week?

    Upgraded to the newer style Haldex Pur est air dryer. Truck builds air pressure and recovers faster now.
  8. Suprman

    Anybody have STRANGE stuff comeup

    And it's on your computer not the forum.
  9. Suprman

    Anybody have STRANGE stuff comeup

    Sounds like malware. Some virus scans won't find it and it will embed itself in your registry. Sometimes you can go to msconfig and disable it from loading on boot up. A good anti malware software like malware bytes should find it. Sometimes it's very hard to remove. Will
  10. Suprman

    M939a2 overheating/excessive coolant pressure

    Wouldn't the combustion test fail then and show contamination in the coolant? Maybe that test needs to be redone.
  11. Suprman

    M939a2 overheating/excessive coolant pressure

    I think he checked for combustion contamination in the coolant. There is a tool mechanics can use for it. I think it's time for a visit to the TM.
  12. Suprman

    M939a2 overheating/excessive coolant pressure

    No I don't have pressure build up in my cooling system even after running for some time. If I remember correctly the air compressor only has oil cooling lines not coolant. Have you taken hoses off and tried to peek into the radiator? I don't know what else would pressurize the coolant other than...
  13. Suprman

    M923 air conditioning a/c install project

    I have seen 5-tons with AC military installed and it appeared to have a stock electrical system. I can see a bit if power loss from the engine driving the compressor but the system should not draw enough power to cause electrical issues. I could see it bringing out issues like a weak alternator...
  14. Suprman

    M939a2 overheating/excessive coolant pressure

    If it is overheating something is definitely wrong. The cooling system is much larger than that engine actually needs. Is coolant flowing? There are 2 thermostats it's possible if the system was gunked up they could both be stuck. How much overheating are we talking here? If the engine is...
  15. Suprman

    Headed to General Sam's mud park in the morning in Huntsville, TX

    That truck is super buried. I bet the interior and engine compartment are filled too. It needs to be trenched around and then hand dug out underneath the best it can be. You could try water too loosen things up but you may just make sandy slush and bury it deeper. Depending on how hard the dirt...
  16. Suprman

    Headed to General Sam's mud park in the morning in Huntsville, TX

    I think if they put the dozer and the other truck together it might have come out.
  17. Suprman

    Headed to General Sam's mud park in the morning in Huntsville, TX

    http://youtu.be/xOJny6yFN1o
  18. Suprman

    Anyone use a Chinese Knock-off starter on the NHC-250 5 ton?

    I couldn't find anyone local here in CT to rebuild 24v anything. There were a couple resellers online that had them new. I got a few from a member in Kansas I believe he has a truck parts yard. Also Jeff in sparta comes across the starters. Will
  19. Suprman

    Backup lights

    I prefer the relay. I use the trans switch to give the coil a ground and activate the relay. I have a dash switch that turns my reverse lights on with an upper rear floodlight also.
  20. Suprman

    VIN location 87' M923

    Anything is possible you can strip it down. They are usually in large block hand stamped numerals left to right. Some rebuilt trucks do not appear to have them. Will
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