So what is the reason for shutting of the heater?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Powell-Peralta, May 4, 2011.

  1. May 4, 2011 #1
    Powell-Peralta

    Powell-Peralta Road Train Member

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    What is the dam reason for shutting off water flow to the heater---using the spigot valves?

    It's not summer yet and this is getting to be dam annoying.
     
    Powell-Peralta, May 4, 2011
    Powell-Peralta, May 4, 2011
    #1
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  3. May 4, 2011 #2
    canuck in da truck

    canuck in da truck Road Train Member

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    then turn them back on and shut them off when it gets hot out--no big deal
     
    canuck in da truck, May 4, 2011
    canuck in da truck, May 4, 2011
    #2
    panhandlepat Thanks this.
  4. May 4, 2011 #3
    Prairie Boy

    Prairie Boy Road Train Member

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    Turn them counterclockwise to open.
     
    Prairie Boy, May 4, 2011
    Prairie Boy, May 4, 2011
    #3
  5. May 4, 2011 #4
    rjmcgee

    rjmcgee Light Load Member

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    Unless their metric valves, then their backwards.:biggrin_2559:

    Valve just keeps the hot water out of the heater core. I think it was more effective to do back in the day when you didn't have AC.
     
    rjmcgee, May 4, 2011
    rjmcgee, May 4, 2011
    #4
  7. May 4, 2011 #5
    swaan

    swaan Road Train Member

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    The reason oem's put shut offs on the heater lines is if you ever blow a heater core or rub a line you can simply turn the valves off to get you home.
    It also helps a/c output a little in the summer but not really nessary.
     
    swaan, May 4, 2011
    swaan, May 4, 2011
    #5
  8. May 5, 2011 #6
    paul 1052

    paul 1052 Heavy Load Member

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    I leave mine open but I go north all year and with them closed my A/C can be too cold esp at night...it wont hurt anything til you have a heater hose leak.
     
    paul 1052, May 5, 2011
    paul 1052, May 5, 2011
    #6
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