Compressor Question

[Pollack Pete]

I'm ressurecting a late 1950's Kellogg-American air compressor.One part on it has me stumped.[doesn't take much].On the quarter inch tubing that goes from the cyl head to the side of the crankcase,which is the unloader,I guess,theres what looks like an air filter teed into the line.The gaskets on this thing that looks like a filter are blown out,so the last scientist that worked on it crimped the line off so air wouldn't leak.Any ideas what this thing is? Looks like original equipment because it's paited the same color as the rest of the compressor.I'm probably gonna omit this part off the compressor.Thanks in advance for any info.

 

[Danglerb]

Some kind of silencer or filter?

 

[roderjo]

Pete, If its the part I think it is...its part of the unloading syst.
If the head unloading valve or the unloader valve are bad then air will leak out all the time.
Otherwise the only time air will vent out is when the unloader switches from an unloaded state to a loaded state. The air must go somewhere so the head unloading valve can retract...
Hope you can follow that.