Re: Free-up 1951 Packard Heat Riser

Posted by HH56 On 2019/6/3 20:29:42

The weight should be hanging down when the valve is open. In addition to the PB Blaster you might also do a few GENTLE taps on the ends of the shaft to give a bit of shock along with the chemical. Just don't get carried away and break something. Sometimes you can free up the valve externally with these methods but if it has rusted so tightly those methods do not work then tearing the manifolds apart is probably what will be necessary.

Having the heat riser stay closed will result in overheating and probably burned valves. Having it stay open causes nothing problematic except maybe a slightly longer warm up if you live where it gets extremely cold. In more moderate climes you won't notice any difference and some have even wired theirs to stay open when springs or other parts were broken.