I put the new o-ring in, added some of the included grease to its circumference, and the pump is once more smooth and quiet. My old o-ring was getting a bit worn and had started making a soft, 'honking' sound, like a whimpering goose. The pump head gasket is for the new pump heads only (so now I have a spare), but the o-ring was the same size as the one in my old pump. That part number gets you a small, plastic bag containing the main seal o-ring, plus the pump head gasket (that clamps onto the valve stem), and some grease. They didn't have that information, but they were kind enough to send me part #4720-9018 to see if it would work. In a separate conversation with Specialized, I was trying to find out the spec for the main seal o-ring on the old pump plunger. The new gaskets are too 'tall,' such that if you use one you cannot adequately screw the old pump head cover back on.) But that has indeed evolved and it is not possible to use one of the new gaskets in an old pump head. (Note that I only really needed the little gasket that clamps onto the valve stem. The new pump head does feel a little lighter than the old pump head, but I am hoping that it will prove to be durable and last a long time. The new head grips a valve stem tightly and doesn't leak even the tiniest bit. I screwed the new pump head onto my old pump hose-perfect fit, 5-second job. But I simply unscrewed the head from the new hose and unscrewed the head from my old pump and I could tell right away that the junction with the hose is identical. As I mentioned above, they suggested that the new parts and old pump would not work together. I guess the Specialized customer service folks didn't really have complete knowledge of the parts compatibility. To anyone who is interested, I ended up purchasing Specialized part #47220-9010, which is the Specialized Air Tool Comp/Pro hose and head. I don't like the idea of throwing away the entire pump over a small rubber gasket. I don't know the inside diameter of either hose. But the 'manner' of connection changing doesn't sound right.ĭoes anyone know if the current Specialized pump hose + head will work on the pump pictured below? The outside diameter of both the old and new hoses is 1cm. If they had said the size of the hoses had changed, I might take more stock in that answer. I then asked Specialized if I could just get a new pump head + hose but they suggested that the manner of connection to the pump has changed over the past 16 years. Specialized said that parts are no longer available for this pump. It is from ~2007.Īir has started leaking from around the rubber 'gasket' in the pump head when I get to higher pressures (>60psi), and the pump head does not sit on a Presta valve as tightly as it used to. I have the Specialized Air Tool Comp pump pictured below.

Air tool comp floor pump