Al wrote:

Now that its cold again, my vacuum pressure gauge is acting up (again). In
the past, when it was cold, it would take a few minutes to come up to the
correct reading. Now, it takes about 30 to 40 minutes to come up. All
dials are OK, and when the gauge comes up, it reads in the normal range.

Any suggestions or good shops??? Thanks!



Sounds like it's tired.

Any instrument shop could overhaul it, I suppose - Trade a Plane is full
of them. I'd look at cost new, as well. Aircraft Spruce shows a 2 1/4"
UMA vacuum gauge new for $84.

I always say, replace stuff in our old airplanes with new every 35-40
years whether it needs it or not.