>If I drain the system, how do I (nondestructively) get the >block heater out? And what should I do to make it seal >better when I put it back in. This is probably not the answer you're looking for so try the external sealing methods first. To remove the heater, first loosen the screw in the center of the heater. Loosen it as far as you can, then tap on the heater a little bit to loosen it up from the block, it's usually only just stuck a little bit. Once you get it moving you have to get something in behind it to pry it out. This is why. When the heater is installed the screw is connected to a piece that spreads out past the hole in the block to hold it in, (like a dry wall anchor). This piece does not return to it's original smaller size so you have to pry out the heater which causes the retainer to bend back into place. Have never replaced a used heater, it wasn't worth the cost of a new one. Don't forget, if you do try it, to replace the seal on the screw also. Greetings from Michigan's Upper Peninsula Jeff & Jean-Marie Diebolt jdiebolt@up.net
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