Old Sears Air Compressor - Help Please
In article , jim wrote:
EW wrote:
"jim" wrote in message ...
EW
you have two valves in almost all compressors:
SNIP............
Jim, may I ask another set of questions about the valves!
My compressor's twin cylinders flow compressed air out the large tube to an
"assembly" prior to the tank. This assembly has a vertical "safety valve"
and an electrical gizmo that tells the motor to shut off at a certain
pressure (mine is 125 psi, and has worked there until recently). Then the
assembly's output goes to the tank.
OK. Is the "load valve" that you talked about at the cylinders' head
assembly, where I may get to it easily, or closer to the tank at the other
assembly? I assume the "check valve" is in that lower assembly somewhere,
and it will be a bear to take off.
the unloader can be integral with the pressure sw assy or seperate,
it depends entirely on the design. in either case, it vents the
pipe that supplies air from the compressor head. this valve will
never be at the head or in the head casting.
IF the load valve, which I hope is the problem, is on the head above the
cylinders, then I will try that first. I should be able to see something
wrong, if that's the problem, right?
Thanks a million for your patience and knowledge. And, sorry!
EW
the unloader valve is about 1/4 inch wide, real small, with what looks
like a staight pin stiling out the bottom.. on my 1 hp. sears air com.
if you see this "pin", you have an integral unloader. it can be replaced,
cleaned or bypassed. a new one is included with a new pressure sw assy.
often it is easier (if cleaning doesn't help) to add an inline unloader.
lots of good advice in the thread, so you have no excuses now, let us
know when you get it fixed. good luck, --LOren
it is on the rt. side(OK, i know, thats not much info.. but when you
turn the crank on the side to turn the compressor off by hand this piece
of bendt metal hits a piece of metal and this hits the bottom of the
unloader valve... the unloader valve is screws right into the end of the
small 1/4 in. tubing that comes from the compressor to the tank area...
you probably have all the plastic covering still on the compressor???
it has to come off so you can see whats happening... and no the valve
that you described does not bother the large tubing that goes straight
to the compressor.. on mine the check valve screws right into the tank
just next to the assembly that you mentioned(and the unloader valve is
attached to the other side..
with your model number yuou can go on sears web site and enter the mod.
number and check for parts.. then you can get a diagram of the air
compressor....if the tubing breaks off, like it happened on mine. i just
went to ace hardware store and bought some copper and another brass
fitting and put it on.. the old alum. tubing might be brittle.....
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