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no heat

Discussion in 'Trucks [ Eighteen Wheelers ]' started by noguns3, Sep 16, 2013.

  1. Sep 16, 2013 #1
    noguns3

    noguns3 Light Load Member

    52
    13
    Jan 7, 2007
    Minnetonka, MN
    0
    That time of year again. Series 60, turned on both valves for heat, but it seems I am getting no fluid thru the heater core on firewall. Maybe I have a valve that is stuck shut? Any suggestions or anyone else have this issue before? Heater core has been empty all summer because I have to clamp the lines because the actuater is broken. Could the heater core be plugged up?
     
    noguns3, Sep 16, 2013
    noguns3, Sep 16, 2013
    #1
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  3. Sep 16, 2013 #2
    Superhauler

    Superhauler TEACHER OF MEN

    12,209
    100,733
    Jan 30, 2010
    keep stroking.
    0
    doubtful, could be the actuator vibrated shut or one of the manual valves screwed up and didn't open. is the engine temp ok? because if the termostats are stuck open that will cause a cold situation.
     
    Superhauler, Sep 16, 2013
    Superhauler, Sep 16, 2013
    #2
  4. Oct 13, 2013 #3
    noguns3

    noguns3 Light Load Member

    52
    13
    Jan 7, 2007
    Minnetonka, MN
    0
    How do I get to the actuator on firewall? Is it the four bolts up there, and then pull the whole HVAC unit away from firewall?
     
    noguns3, Oct 13, 2013
    noguns3, Oct 13, 2013
    #3
  5. Oct 13, 2013 #4
    puncher

    puncher Medium Load Member

    540
    358
    Feb 12, 2010
    Tn.
    0
    I suppose you've already checked the coolant, but low coolant will give no heat and not always make the engine run hot. Always better to check the simple stuff first.
     
    puncher, Oct 13, 2013
    puncher, Oct 13, 2013
    #4
  7. Oct 13, 2013 #5
    claytonr1973

    claytonr1973 Light Load Member

    266
    289
    Jun 1, 2008
    miami,ok
    0
    Make and model would help.
     
    claytonr1973, Oct 13, 2013
    claytonr1973, Oct 13, 2013
    #5
  8. Oct 14, 2013 #6
    noguns3

    noguns3 Light Load Member

    52
    13
    Jan 7, 2007
    Minnetonka, MN
    0
    1999 kw t 2000. Checked all obvious stuff, now I need to get to the actuator. It has to be that, as coolant is hot in both the supply and return line thru the heater core. Anyone know how to access the actuator on this thing?
     
    noguns3, Oct 14, 2013
    noguns3, Oct 14, 2013
    #6
  9. Oct 15, 2013 #7
    puncher

    puncher Medium Load Member

    540
    358
    Feb 12, 2010
    Tn.
    0
    On my old W-9 it is located inside the heater core box on the passenger side inside firewall, not sure about the T-2000, a call to the nearest KW dealer could tell you for sure.
     
    puncher, Oct 15, 2013
    puncher, Oct 15, 2013
    #7
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