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  1. #21
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    I was a USAF active duty firefighter from 1965 to 1985. The 0-11A and 0-11B series crash trucks had gasoline fired heaters in a lower left front compartment. They would cycle on and off when activated and ran through a purge cycle at the end of each run period.

    They were known for failing to do the purge cycle and your first hint was usually when the igniter activated and the compartment door blew open with an accompanying fireball!


  2. #22
    Forum Member FyredUp's Avatar
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    Quote Originally Posted by Rayr49 View Post
    I was a USAF active duty firefighter from 1965 to 1985. The 0-11A and 0-11B series crash trucks had gasoline fired heaters in a lower left front compartment. They would cycle on and off when activated and ran through a purge cycle at the end of each run period.

    They were known for failing to do the purge cycle and your first hint was usually when the igniter activated and the compartment door blew open with an accompanying fireball!
    Dang it! I missed the cool stuff like that. I worked for the WiANG as a civilain firefighter from 1989 to 1991. We had P-2's, P-4, P-19, and a Brand new P-23. The only one with a booster heater was the P-23.
    Crazy, but that's how it goes
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  3. #23
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    Quote Originally Posted by FyredUp View Post
    I asked about a booster heater. and whether the pump is drained or not would be irrelevant if we had a booster heater. Which was my original question.
    And the product I linked to boosts the amount of heat in the water system. Is it enough? I don't know. You're doing a some "outside the box" thinking, which is what typically produces improvements in our tools.
    Quote Originally Posted by FyredUp View Post
    Believe me this isn't my first winter in wonderland
    I didn't expect it to be seeing as you're in Wisconsin. But it's someone's first, otherwise we wouldn't be discussing frozen fire trucks.
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America

  4. #24
    Forum Member FyredUp's Avatar
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    Quote Originally Posted by txgp17 View Post
    And the product I linked to boosts the amount of heat in the water system. Is it enough? I don't know. You're doing a some "outside the box" thinking, which is what typically produces improvements in our tools.I didn't expect it to be seeing as you're in Wisconsin. But it's someone's first, otherwise we wouldn't be discussing frozen fire trucks.
    Frankly, until you spend a winter in single digits or sub-zero perhaps you should try not being so smug.

    Sometimes it doesn't take much residual water in a pump to cause havoc in the cold.
    Crazy, but that's how it goes
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  5. #25
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    Quote Originally Posted by FyredUp View Post
    Dang it! I missed the cool stuff like that. I worked for the WiANG as a civilain firefighter from 1989 to 1991. We had P-2's, P-4, P-19, and a Brand new P-23. The only one with a booster heater was the P-23.
    The P-2s were set up for booster heaters also. I think the heater if installed was in the right side compartment just above the fuel tank cap. The body and doors around the pump compartment and water tank were heavily insulated with sheets of styrofoam. I also recall the rebuilds to change them from gas engines to diesels. The transfer cases and axles were not upgraded to handle the additional torque. That resulted in a number of trashed transfer cases and broken axels.

  6. #26
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    Quote Originally Posted by FyredUp View Post
    Frankly, until you spend a winter in single digits or sub-zero perhaps you should try not being so smug.

    Sometimes it doesn't take much residual water in a pump to cause havoc in the cold.
    I offered you a genuine good-faith recommendation for a product to heat and circulate water using diesel fuel and 12 volts DC. And the simple suggestion to drain the truck if it is outside for long. You respond with a condescending attitude about me not addressing your question, and boasting how it's not your first rodeo.

    If would seem that your extraordinary experience in cold weather operations would allow you prevent the problem that brought you here.
    The American people will never knowingly adopt Socialism. But under the name of 'liberalism' they will adopt every fragment of the Socialist program, until one day America will be a Socialist nation, without knowing how it happened. --Norman Mattoon Thomas, 6 time presidential candidate for the Socialist Party of America

  7. #27
    Forum Member FyredUp's Avatar
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    Quote Originally Posted by Rayr49 View Post
    The P-2s were set up for booster heaters also. I think the heater if installed was in the right side compartment just above the fuel tank cap. The body and doors around the pump compartment and water tank were heavily insulated with sheets of styrofoam. I also recall the rebuilds to change them from gas engines to diesels. The transfer cases and axles were not upgraded to handle the additional torque. That resulted in a number of trashed transfer cases and broken axels.
    Those old P-2's were pretty quick for the beast that they were 65 miles an hour was screaming.
    Crazy, but that's how it goes
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  8. #28
    MembersZone Subscriber npfd801's Avatar
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    I know you're talking about heating the water tank too, but our pumper with a hot water heater off the chassis cooling system does an amazing job of keeping the pump compartment warm in the winter. Not the same setup as a mid-mounted pump (this is a rear mount unit, so the pump sits in a nice, fairly weather tight compartment with a roll up door). This same unit if left in recirc a little above idle will keep the the water actually reasonably warm. The smaller 500 gallon tank also helps I'm sure. I also know we didn't go with the higher BTU output choice for the heaters when we built the thing.

    Probably fairly useless info unless you're doing a rear mount pump, which I'm fairly confident you're not.
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  9. #29
    Forum Member FyredUp's Avatar
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    Quote Originally Posted by npfd801 View Post
    I know you're talking about heating the water tank too, but our pumper with a hot water heater off the chassis cooling system does an amazing job of keeping the pump compartment warm in the winter. Not the same setup as a mid-mounted pump (this is a rear mount unit, so the pump sits in a nice, fairly weather tight compartment with a roll up door). This same unit if left in recirc a little above idle will keep the the water actually reasonably warm. The smaller 500 gallon tank also helps I'm sure. I also know we didn't go with the higher BTU output choice for the heaters when we built the thing.

    Probably fairly useless info unless you're doing a rear mount pump, which I'm fairly confident you're not.
    Not useless, just a different approach.

    You can be more than fairly confident that we are not going with a rear mount pump.
    Crazy, but that's how it goes
    Millions of people living as foes
    Maybe it's not too late
    To learn how to love, and forget how to hate

  10. #30
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    We don't have very many heaters for pumps in Central Oh., but my POC puts a couple of gallons of RV antifreeze in the pump to help keep the pumps from freezing. We keep a couple of extra gallons on the truck in case we flow water.
    I haven't seen a pump freeze up personally, but what gives first when it happens? does it snap the driveshaft or does it trash the impeller first??

  11. #31
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    It depends on how hard the freeze is. The impellers are bronze or in some cases an alloy. They are normally the softest metals. You can expect seals and packing to be damaged along with small lines to gauges, relief valve etc. A really hard freeze (as in block of ice) will probably result in the breaking of castings such as the pump housing and intake manifolds.

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