Ben, I have found that you can accurately setup a TA just by measuring its protrusion and the depth to the adjusting screw. I believe that TA will not protrude its entire length due to the fact it has to overcome the spring pressure inside the pump.
You need to get the engine coolant up to 175-180 F and then measure the pump gap (should be .019" at 175-180F). Use the pump's adjustment screw to get the gap to .019". It'll take you several attempts to get it set right. Bruce Wes Ingram's instructions: http://www.wesingram.com/thermostaticactuator.PDF > Date: Sun, 14 Jul 2013 17:29:48 -0500 > From: "Ben Ament" <[email protected]> > Subject: [alfa] thermostatic actuator question > > I am installing a rebuilt thermostatic actuator in my 75 Spider. Having > never used a rebuilt unit before, I have a question. This unit measures > .964 > inch of protrusion. However, the depth in the pump to the adjusting screw > is > only .70 inch. Can the actuator be shimmed this much? If so, what should be > used for shim stock, or can such a shim be bought? > > This list is invaluable - many thanks! > > Ben -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
