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Username Post: Heater control valve leaking        (Topic#366434)
cp sizemore 
Posts: 20

Age: 73
Loc: Miamisburg,Ohio
Reg: 02-12-13
09-17-21 04:09 PM - Post#2827284    

Started my 50 hardtop the other day day and noticed coolant leaking down the floorboard behind the heater. I just replaced the heater blower with a 12 volt.Turned the heater on and noticed the leaking .It’s original to the car and has a Harrison sticker on it.Can you still buy the valve or do you guys suggest getting it rebuilt?What say the experts?

Began driving in these old cars...Proud to be back in"100% GOOD OLE AMERICAN STEEL"


"5th Year" Silver Supporting Member
Posts: 6155
Loc: Yakima, WA. USA
Reg: 12-28-02
09-17-21 06:25 PM - Post#2827288    
    In response to cp sizemore

I've rebuilt a few of them myself. If you're inclined and adventurous, the replacement RANCO valve is available at NAPA. Bottom photo is the valve I rebuilt for my truck. In either instance (car or truck) the hardest part is bending the tangs that hold the valve to the mounting plate. I used a wood chisel to get under them and lift them. Car units are usually marked as HB or HN.


Attachment: RANCO_Heater_Valve_Instructions_Pg.1.jpeg (1.78 MB) 35 View(s)

Attachment: RANCO_Heater_Valve_Instructions_Pg.2.jpeg (1.76 MB) 29 View(s)

Attachment: 53_Chev_Truck_Heater_Valve_X.jpg (1.66 MB) 31 View(s)

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