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Glycerin filled gauges

C

craigco

Member
Have a new 1000 psi glycerin gauge I got for the hydraulic tension on a Hesston baler. It was used once since on the baler. Think I ran it to 200psi for what I needed for testing. Now the gauge is stuck at 800 psi. What caused that? Even sitting on the counter it is at 800. Gauge came from surplus center. Sure I will have to get another unless there's away to have it go back to zero.
 
The insides have probably went bad . Those gauges are pretty cheap I think I?d replace it have you tried giving it a good ol tap tap and see what it does
 
No haven't tapped it yet. First I thought because it sits on the side that maybe it didn't like it. So I took it off to stand it up but it hasn't changed. It is a cheap gauge so no worries to replace. Just hope the next one last longer.
 
That is usually caused from over pressuring.

Hard for it to have done that just sitting, possibly it was dropped?

I've eased them apart and tried to get the gear and rack back to a workable position, but never really trusted one after that.
 
I have one that the same thing happened to! I have taken some gauges apart and re-calibrated them, but I haven't figured out how to get the liquid filled one apart.
 
I have worked on several gauges from military surplus when they cut up boats. Very heavy duty and they all can be adjusted. Your problem I would bet was an accidental over pressure or just a damn cheep gauge. If you buy another gauge go about 50% higher pressure. A gauge for maximum accuracy is supposed to be mid scale or just a little above. The 0-150 filled gauge is the one I installed on my EMGLO portable compressor. It shuts off at 125lbs. Go on Ebay because there are a bunch of good gauges for reasonable prices. The second picture is a 10,000 pound gauge for 20 bucks. It sounds like too much but beleave me you ain't gonna break it.
cvphoto15031.jpg


cvphoto15032.jpg
 
Forget it. The glass has a gasket under that rolled edge. Filled gauges are so nice in vibrators environments but you can't mess with them. I have found some great old gauges at car shows and flea markets. Found a beauty of a BROOKLYN BRASS GAUGE CO. From the mid 40s. WW II era gauge. Think I payed 8 bucks. Took it apart, cleaned it, one or two micro drops of turbine oil on the pivots, and polished the brass case and bezel band. Just beautiful. Just always keep an eye out. One other thing that is fascinating are the navel depot inspection and calibration stamps you find. Some are on the face, some are on the back, and internally you might find a calibration stamp. Found a few from the 40s and 50s.
 
Yes I got fittings to put it up right. I'm need to take the pump off to reseal it then put the new gauge on up right.
 

We've had a number of those cheap filled gauges go bad.
We have several low pressure 200 psi gauges in the water system in our poultry houses, replaced 3 stuck gauges last month.
The local saw mill I worked at as several hydraulic systems operating at 1000 to 1500 psi plus a few that operate at 3000 psi.
About any time I go thru the mill I can find a gauge that ether won't zero or is stuck.
We've had to replace some very high priced fluid filled gauges on our local fire trucks because the fluid leaked out or the gauge would't zero.
 
I know that some brands of them gauges come with small orfices that screw into the inlet. this prevents shock loading the guage. have a bunch of them orfices as don't use them.
 
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