Schrader gauge question

[29tudorsedan]

I picked one of these gauges up working for $6 along with the leather pouch, and a tire at 35 psi was reading 20 on the gauge, I oiled the numbered shaft and it read perfectly for a short while and I can only guess what was left of the gasket on the inside disintegrated from the oil after it wicked up the shaft with a few uses because it just extends fully and leaks air now.

Does anyone have any experience with these? Are they repairable?

Removing the head from it I'm met with a red disc with a hole in the center, and I'm not sure if there is much I can disassemble from there.

What I'm thinking of if I can't get it apart is walking an o-ring up the shaft and hopefully it will seat somewhere farther up and stop the leak.

I don't have much in it, so if it can be fixed I'd give it a shot.

Thanks

 

[Pinstripe]

I've got the same ?

 

[29tudorsedan]

I diassembled it yesterday, taking the red disk off and it is something I'm assuming would not be repairable unless someone knows of a part very similar. Under the hard red disk is a rubber disk which has a hole in it and that is attached to a rubber sleeve which sits inside the gauge in a spring, as the sleeve inflates it pushes that spring driving the numbered rod. What seems to happen is the 85ish year old thin rubber sleeve seperates from the thicker disk/ring it is attached to and then air just flows with no resistance.

I'm going to go after a moto meter air gauge with a dial and reset valve since the schrader stick valves seem to have a limited life due to the materials used and age making them brittle! Still looks nice though, but it's gotta function if it's going in my car! No props! It's not a museum! =] At least that's what I try to stick to!