adjusting pressure on a 3z124c

by Jeff
(florida)

I also need to know how to change the oil on the 1z943b motor

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Jeff, I can find no information on your Speedaire model 3Z124C air compressor.

While the logical source for the information you seek is Grainger, I'd like to help. To do that, I need a good digital photo taken from each side of the compressor, from the tank up, including all components.

If you start a new thread you can upload four photos. With a close look at your air compressor, I'll be able to advise.

Cheers,

Bill

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Jan 05, 2013
speedaire model 3z124c
by: Jeff

its seems very old I bought it at an aution for 10.00, the motor is 1Z943b It had a little knock and smoothed out now and again so drained the oil and putting new in, I figure I will fill till it comes to the bottom of the fill tube?
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Jeff, I searched for the motor and the part number you provided came up with a pump on the Grainger site. The specs for that pump say you need to add 6 oz of oil.

www.grainger.com/Grainger/CHAMPION-Single-Stage-Compressor-Pump-1Z943

B.

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Motor speed for speedaire 1z784a?

by arthur ingraham
(vineland new jersey)

motor speed for speedaire 1z784a, also what are the specs for this compressor?

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Speedaire Model # 4 B247B

by Tom Corso
(Vista, CA. 92084)

I have a Speedaire air Compressor model # 4B247B with a 2 HP electric Dayton motor Model # 6K773AB THe air compreesor runs up to about 100psi but does not get to the 125 psi shut off pressure and when air tools are used it looses air presure quickly.Is there something wrong in the pump or is the dayton electrical motor too small.?
thanks

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Tom, it seems clear that something has failed on your compressor, as it is supposed to build pressure to cut out and then stop.

Also, the same problem(s) that is preventing the compressor to get to cut out pressure levels is also affecting the overall efficiency of the compressor.

Under the Troubleshooting section is a link to pages about why compressors run and don't build pressure. You need to read those pages, do the checks referred to, and then post again with specifics about what you did and didn't find, to allow the two of us to pinpoint your compressor problem.

Cheers,

Bill

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CFM

by DAVE SMITH
(BATH, MICHIGAN)

MODEL # 12937D OR A 12931D, I CAN'T TELL,(SCRATCHED#)
IT'S A BIG 4 CYL. 2 STAGE 10HP UNIT.
ABOUT HOW MANY CFM DOES THIS THING MAKE?

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Bill says...

Dave, the rule of thumb is about 4 CFM of compressed air at about 90 PSI per HP of motor size.

It varies depending on the efficiency of the compressor, but that rule is a pretty good guide.

Cheers,

Bill

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