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| | | | Joined: Sep 2011 Posts: 39 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 39 | I have a fresh air heater in my '49 1/2 ton. I put in a rebuilt valve on the firewall, but it always blows hot no matter which way I turn it. Did I do something wrong? I installed the valve according to the assembly manual. Thanks for any help. | | | | | Joined: Apr 2008 Posts: 899 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 899 | Hose from thermostat housing goes to valve connection closest to firewall, hose from other valve connection goes to one heater core connection. The other heater core connection goes to water pump. If you're connections are this way it's correct. Feel the hoses that go to the valve. Heat on hoses feel the same, heat off hose going through firewall should feel cooler. An infared thermometer might help here but I'm not sure. If both hoses are hot all the time your valve isn't working properly.
Ed
| | | | | Joined: Mar 2010 Posts: 10,272 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,272 | I have a fresh air heater in my '49 1/2 ton. I put in a rebuilt valve on the firewall, but it always blows hot no matter which way I turn it. Did I do something wrong? I installed the valve according to the assembly manual. Thanks for any help. Ranco Valve? If so, I don't think that they shut off all of the flow to the heater. You may want to add a cutoff valve at the water pump for warm weather driving.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Sep 2011 Posts: 39 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 39 | Yes, it is a Ranco. I was thinking I would probably have to put a cut off valve in the heater hose. Thanks for the info. | | |
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