Speedaire 3/4 hp 3 gallon tank wont air up.?

by josh Hill
(calcium ny USA)

Speedaire 5Z598 3/4 HP 3 Gallon Contractors Compressor (Photo: www.ebay.com)

Speedaire 5Z598 3/4 HP 3 Gallon Contractors Compressor (Photo: www.ebay.com)

Hello Bill,


Speedaire 3/4 hp 3 gallon tank 90(?) psi max wont air up.

I was wondering if something was off or my compressor is just junk.

It will turn on and air up to about 20 p.s.i. and then it just levels off.

So I said' there must be a leak' but i turn it off manually and there is no hissing. a small leak that takes 2 hrs for that 20 psi i have in there to leak out but nothin major.

I was just wondering if I needed to re-ring this little bad boy or what.... HELP! thanks -the lefthanded outlaw
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Hey Lefty... :-)

Once you get the shroud of your compressor, I suspect you will find a very small piston/cylinder, and maybe one with the intake port in the end of the cylinder with a small flapper valve setup inside.

It is possible that the seals on the piston are gone, yet I suspect it is more likely a valve or gasket thing.

Finding parts will be a bit of a challenge.

I don't know what these Speedaire 3/4 HP are going for today, but I do see you can get a host of air compressors in the same size range for under $200.

Whether parts sourcing, tearing down and rebuilding is worth it against the price of a new, cheap air compressor is up to your skills and budget.

Cheers,

Bill

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Need electrical diagram for my 2Z498 speedaire?

by steve nadelle
(nashville tn)

it was sold around 1988
it has a pump with model number model 2Z498
it is 120 Volt.
20 gallon tank.
the motor has one starter cap

I DONT HAVE THE COMPRESSOR MODEL NUMBER . :-(

can any on help with the electrical diagram or the model number of the compressor ?

my email is steve.nadelle@hotmail.com

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speedaire 3z355c is 120 or 240 volts?

Dayton LR22132 compressor motor  (Photo: www.ebay.ca)

Dayton LR22132 compressor motor (Photo: www.ebay.ca)

I have a speedaire 3z355c compressor and i am not sure if it is 110 or 220v.The motor is a dayton lr22132 and the cord has 3 wires black,white and green.I removed the cover on the motor and green goes to the motor houseing the white and black to the the terminals.
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Howdy... don't know for sure, but I did some checking for you and found a listing on eBay for: DAYTON LR22132 9K324D MOTOR 2HP 115 VOLTS.

I would surmise from this that your Speedaire compressor has a 2 HP 120 volt motor.

Typically, the black and white wires are the power and return, and the green is the ground wire.

Cheers,

Bill

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trying to determine cfm of compressor

by Ron
(cal)

speedaire mod 5z184b

speedaire mod 5z184b

speedaire mod 5z184b tank mount 5hp 750-833 rpm 2z499c pump do you know what the cfm output would be?
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Like the EPA estimates of car mileages, I believe the published flow rates of air compressors are suspect.

If you read the information about sizing air compressors on this site, you will find the information about estimating the output of your Speedaire air compressor based on its motor size.

Bill

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