Speedaire Air Compressors


Speedaire is the house brand for Grainger. Under it Grainger offers a variety of products including Speedaire Air Compressors. Grainger have several manufacturers making Speedaire compressors for them. Some lower end and lower priced units are likely made offshore yet other models are reputedly North American made.

Looking for Speedaire Compressor help?

Somewhere on your Speedaire air compressor there will be a nameplate with Grainger stock number, a five digit sequence, similar to this: 8X123. on it.

Speedaire Air Compressor

According to Grainger technical support the compressor stock number will always have a number, a letter, and then three more numbers. With that compressor Grainger stock number you can then contact your local Grainger outlet for assistance.

U.S.A. Speedaire Clients

If you are in the United States, the URL for the the Grainger locations page is: www.grainger.com/Grainger/wwg/branchSearchRender.shtml .

Canadian Speedaire Clients

In Canada, you will need to contact your local Acklands/Grainger outlet: www.grainger.com/Grainger/static/int_canada.html

Speedaire Clients Outside N.A.

For Grainger outlets outside of North America visit: www.grainger.com/Grainger/static.jsp?page=int_markets.html

Getting Speedaire Help


When you reach your local Grainger branch, advise them that you are calling about parts for Speedaire compressors, and they will either help you themselves if the local branch has the skills, or they will patch you through to the same technical service people I talked to.

If you are seeking help as to how to change a part or fix your Speedaire compressor yourself, they will not help. They can, and will, help you find parts for Speedaire compressors, even some that are decades old, as long as you have their stock number.

If you still need help, this is your Speedaire forum page. Please have a look at the postings below which cover, and this is just a few, Speedaire compressor issues such as...

  • Speedaire overheating
  • Breaker popping on Speedaire compressor
  • How to hook up my Speedaire
  • Pressure tube is bursting
  • Help identifying Speedaire pump
  • Speedaire is bogging down

Here are a couple of additional pages that might help.

Still cannot find an answer to your Speedaire compressor question? Then post it using the form.

If you see a post question you can help with, please click the comment button and help out, would you?

As the numbers of comments added to this page grows, it gets harder to find the specific answer you are seeking so I've added a search box here to help you find the information you need on my site.

Thanks for your questions and to the hundreds of folks that have commented on those questions to help other Speedaire compressor users.

Bill


Got a comment: good / bad about Speedaire Compressors?

What experiences have you had with your Speedaire Compressors? Why not let us all know? See what others have said at the bottom of this page.

What Other Visitors Have Said About Speedaire

Other visitors have said....

Help with Dayton model 3Z966B  
Dayton Model Dayton 3Z966B Serial number 071289L - 088362 Number on Pump 019066 Looking for parts to rebuild cylinders . Hope you can help ? Thanks …

3Z349D - an owners manual or a prts source? 
I have a Dayton Speedaire . Is there an owners manual or a prts source for this compressor ? What is the normal tank pressure cutoff PSI ?

Broken electric switch 
I have a Speedaire model 3Z355H1 compressor with a Dayton motor. Need an "off-on" electrical switch. How can I get one?

Need electric motor for Model # 1Z945B compressor. 
I found a stationary Dayton Speedaire air compressor, but the electric motor was missing. The model # is 1Z945B, which has been discontinued. I'm trying …

Model5Z034A runs perfectly then pops breaker 
Model5Z034A 2HP single phases runs perfectly but trips household breaker at or near the end of pressure build up. With breaker reset it runs briefly …

find part's for 1960 speedaire IZ421 
Hello I trying find some part's for 1960 Speedaire air compressor looking for off and on switch and Aluminum line. and belt is there manual you know …

Prts or manual for a model 1Z937C Speedaire compressor? 
Compressor info: Speedaire model 1Z937C 2 stage, 10 HP, 120 gallon tank. misc info: Dayton electric co. 15424 This compressor runs fine, except …

The reed valves do not seal.  
The reed valves do not seal. I have air leaking out of the crank shaft oil cup. Where can I get a new set of valves for a speedaire, single stage, Model …

Wiring power to the Speedaire compressor 
Do I run my power supply to the pressure switch or to motor?

Get Speedaire 2Z499A to turn over 
Hello Compressor Experts, Can I get a Speedaire 2Z499A to turn over by sending pressurized air back through it? I am a high school student and have …

Funny looking manifold thing on my old Speedaire 
What is the name of the funny looking manifold thing on my old Speedaire that my pressure switch, tank pressure gauge, and the pump exhaust tube all connect …

Need connecting rods for model 3z581  
Trying to find these rods any help greatly appreciated

Specific parts # confusion for 2z498 compressor 
I rescued a speedaire air compressor from a friend of mine that was going to take it to the dump. It had been sitting outside in the rain for quite some …

Loss Of Power/ Pressure On Speedaire Compressor 
I have a Speedaire single stage 20gal compressor. When I use my impact gun it starts to loose power the longer you hold the trigger on. It has the action …

Correct flywheel for a3Z492? 
I have ordered a flywheel for this unit. I have been sent 3 flywheels, from 2 vendors. Two of the flywheels are the correct 16" diameter V5 belt, but …

I need to know what the cfm is for a Speedaire 3z 492 A 
I need to know what the CFM rating is for my Speedaire 3z492A.

Motor will not shut off? 5Z185 5HP 1 Phase 
My switch does not shut the motor off? I changed and secured the air tube from the tank to the switch area..

Help identify Speedaire compressor, circa 1976 
Hey Bill / all ... Speedaire compressor identification from photo only, circa 1976? I am trying to identify a circa 1976 Speedaire compressor from …

Cracked shut off valve for Speedaire compressor 
I need the plastic shut off valve assembly on a vintage Speedaire. Is a one piece assembly that has the check valve and the regulator screwed into it. …

Air leak 5Z700C air compressor 
Just installed a 5Z700C air compressor. When it finishes its cycle it blows air out(unloader) then stops but we hear air escaping from the pressure switch. …

1Z721 Takes forever to build pressure 
Hello I have a 1981 Speedaire 1Z721- 60gal., 2 stage, 240v, 5hp with pump# 3Z180. This year it started taking longer to build 100+ lbs to run air …

4B227C won't shut off. 
I Have a Speedaire 4B227C compressor. The cutout switch doesn't seem to be operating properly. Pressure runs up to 140 psi. I switch it off manually …

Looking for replacement filters for Speedaire 2Z499A 
I am looking for replacement filters for my Speedaire model 2Z499A, but Grainger tells me it is a discontinued compressor with no replacement parts. Any …

CFM of Dayton Speedaire Model 3Z582 
I have an older Dayton Speedaire air compressor model 3Z582, with a three cylinder pump model 3Z170B. I am trying to find information about it's CFM output. …

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1Z910B 1/2HP tank with 2Z157B compressor 
Need pressure switch or suitable replacement. Also info on type and quantity of oil to use.

Speedaire 4ZL01 filter bowl o-ring? 
I have read a lot of very useful info on your site, great place. I am having trouble locating o-ring replacements. Please advise.

Speedaire 4B237C Air Compressor Replacement 
We are replacing an existing Speedaire 4B237C air compressor and cannot find this model number for replacement - only the 4B237 model seems to be available. …

Source for Speedaire Green Touch Up Paint 
Is there a source for paint that is the speedaire green? Would like to repaint an old speedaire but have not been able to find anything on the interweb. …

Speedaire model number code? Like a VIN #code?  
Is there rhyme or reason to the speedaire model number? Date of mfg? Psi? Cfm? I just got a 3Z355J1. I looked under a lot of rocks! No luck!

Gallons of Oil in 1Z991 
How many gallons of oil does model 1z991 take?

Filter element for Model 3Z922A 
Need filter element that goes in the end by fan on Model 3Z922A? Where can I find one?

How many HP can my Dayton 2z157b safely handle? 
I have a Dayton model #2z157b compressor on a older Honeywell tank about 20-30 gallons but the motor was replaced with what I believe to be a to small …

Looking for cfm on speedaire 5z017 
Looking for cfm on speedaire 5z017 5hp 1 ph 2 stage 80 gal vertical

Replacement of bad pressure switch on Speedaire compressor 
I have a model 5z032A. I am looking for the on/off switch assembly.

Can I remove the head from my Dayton 4B247B pump and turn it 180 deg. 
I've got a spare compressor Dayton 4B247B pump and the outlet is on the wrong side of the pump. can i unbolt the head and turn it 180 deg. so it will be …

Gasket split - why? 
rebuilding a 2z499 cylinder....was wondering why the cylinder to head gasket has a split in the middle of it? using 1r396 gasket kit out of Grainger.....thx …

ASCME certification for Model 4B228E 
I recently had an inspector from the dept. of Labor come to my work location for a safety inspection. He said I need to make sure I have an ASCME certification …

Help Identifying Older Speedaire Compressor 
I do not have much other than the pictures. It was left in a house i purchased. i have no need for it but don't know what it is worth. Thanks in advance …

What is cfm of model 3z496 
Have a 1987 3-phase spreedaire. model 3z496. 10 HP. How do I find out the cfm?

What oil for Speedaire 1HP Model 3z929 2z4988 
I cannot find anywhere on the compressor the type and amount of oil required. It's 20+ years old I believe. I cannot find any information on the web about …

My speedaire gas compressor backfires...why? 
when i try to start my gas compressor it backfires why 5.5 speedaire by dayton, serial number 070520042591

Parts for a 1975 Speedaire??? 
Where can I find old speedaire compressor parts? Talking 1975!

Help with a new Speedaire 35WC83 
1. I just bought a new 35WC83 Speedaire, 2 stage, 175 psi, 80 gal, 5 HP air compressor for my job. I can not find the owner's manual, if anyone could help …

How Speedaire Model 2Z628 makes vacuum 
It says it is a diaphragm compressor and vacuum pump. It appears to work, but I would like to understand how to make it a vacuum pump. Thanks so much …

Help wiring a SPEEDAIRE 5z185B 
I have a SPEEDAIRE 5Z185B that I want to test, but the wiring was disconnected, does anyone know where I can find a rebuild or user manual that would have …

Speedaire and ambient air temperature  
I was thinking of buying a speedaire air compressor, a two stage, 7.5 horse, 23.1cfm at 175psi. My garage is not isolated at all and would be out in …

Model 5z036 motor stalls at 30 psi.  
Unable to read nameplate. Is this motor dual wired for 120/240? It is currently hard wired for 120 vac. Could there be a rotation issue?

3.5 hp Speedaire bogging till overload on motor trips 
60 gal. 3.5 hp Speedaire. bought it used a few years ago as a backup. now I need it and it wont run. Runs great for about 30 sec. then bogs till it eventually …

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Need pressure switch for a 5z405c Speedaire 
where and what kind of presser switch to put on 5z405c compresser bought air compresser but dosent have a presser switch to shut off when air gets up …

5z033a shuts off after 5 to 10 seconds 
speedaire direct drive model #5z033a. runs 5 to 10 seconds and shuts off. starts back running after 3 to 5 minutes, sounds fine running

Help with older Speedaire compressor 
Cannot find any model number s/n is100390l 766083 This is an old compressor with 1hp motor I am trying to find cfm details or pump details …

Blows house breaker when switched on 
Blows the main, 30 amp house breaker when the switch is turned on, why? Speedaire 4B227D compressor Dayton 9CRZ1 motor

Cannot find certain parts for my speedaire 2Z498B compressor 
I have a speedaire compressor 2Z498B and need to replace the crank shaft, needle bearings, valves, oil seal, and all the gaskets. I called grainger but …

Identify maker of Dayton Speedaire 5Z017 
This is a two stage direct drive "5 hp" motor/pump on an 80 gal vertical receiver. I'm not finding much info on it. Can anyone tell me who really made …

Start postion of 4Z705A switch 
Model 4Z705A, which way to turn knob to start position?

Larger motor on a 3z323 
My buddy has a Speedaire 3z323 that no longer has a motor. Everything else is sound. I have a Dayton 2hp motor off of another Speedaire & was wondering …

pump shuts off and motor continues to run 
How do I stop motor from running after the pump shuts off? What is the problem?

Price of Speedaire model 3z922a 
I have a speedier model#3z922a 120 vac 9.6a 60Hz 3 quarters ho how much does it cost

Speedaire 1NNF6 oil capacity 
Speedaire 1NNF6 Air Compressor, 120 V, 2 HP, oil capacity just like what the subject said, pls let me know the oil capacity for the compressor pump, …

Speedaire 3Z745A 
Is the Speedaire Air compressor 3Z745A a 1 phase

Speedaire compressor model IZ796? 
Hi, I just was given my Grandfathers old air compressor, and it still works but it doesn't want to build pressure past 60psi. I'm contacting you more …

Speedaire Compressor starts out slow and then starts to picksup to normal. 
My Speedaire air compressor (60 gal tank, hard wired 220v supposedly 5 HP motor) starts out running slow for probably less than a minute, then picks up …

what are cylinder head torque specs for 35w347 
cant find cylinder head torque specs for 35w347 need the torque specs to properly break in the new motor (TF061903AV)

What oil for a Model 3Z423B compressor? 
What weight of oil do I use in my Model 3Z423B compressor?

3z922b speedaire compressor leaks air 
Model # 3z922b speedaire compressor builds pressure up to 50 to 70 lbs on guage then compressor releases air...and process starts over again.

Chasing info on 3z427c compressor 
3z427c compressor with 2z498A pump Found some pictures online that included a couple of pages of the original manual, only pages 1 and 5. Somewhat …

Switch to single phase motor on Speedaire 5f227 
want to switch to single phase motor what size would i need...hp/ rpm Speedaire 5f227 2stage. Came with 3 phase and can't use it so I am wanting to …

Speedaire 1Z935 Compressor not filling up tank 
Have an old Speedaire 1Z935 Compressor not filling up tank. We remove all the water from the tank, but it's still not filling up the tank. We inherited …

Speedaire will not run 
I have kicked the breaker off and on,but still well not come on....

What model is my Speedaire compressor 
Hi, I am looking at trying to figure out the model of this Speedaire compressor and the CFM @ PSI ratings if anybody could help me out. From the tag, …

After initial fill, Speedaire motor just hums 
Great site, thank you! After my small Speedaire unit fills, it shuts off correctly. After some use, it tries to fill up again, but only results in a …

Getting the tire off Speedaire compressor 2yj61 
How do I get the tire off a Speedaire air compressor model 2yj61

new 7.5 dayton motor starts slow then picks up speed 
7.5 dayton motor new starts slow then picks up goes back slow sometimes kicks breaker and air hose pressure not constint

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Speedaire air compressor has oil problem 
Can I just plug this with anything? Or is there pressure that comes out of it? Also how do I know how much oil this thing takes? Just until it …

Schematic request speedaire Model 2z499c 
Do you have a schematic of the un-loader valve control? I have a speedaire Model 2z499c. (3z355h-2 stage ccw rot 2 horsepower single phase number also …

Compressor wheels and belts strugling to move 
wheels and belts strugling to move bad smell of burning can this compressor be fixed on my own ?

5F213 Speedaire compressor needs a new 20 gallon tank 
Hello, I need to replace my 20 gallon tank on my 5F213 Speedaire compressor as it is rusted out. Where can i purchase a new or used 20 gallon tank …

Repair manual for 3Z419 speedaire air compressor 
I would like to get a service repair manual for the compressor pump B17B for the 3Z419 speedaire industrial air compressor

Flow of speedaire model 5F213 
My question, what is the cfm of speedaire model 5F213

convert 3phase to single phase by changing the motor 
My Speedaire compressor has C face motor mount. The motor is 3 phase. Is this the standard NEMA C mount? I want to change it to single phase.

Find a 5z696a pressure switch 
where can I find a replacement switch. GRAINGER NO LONGER STOCKS.

What type of oil does a Speedaire DaytonPump 5f235b take 
I have a Dayton Air compressor model 5f235b can you tell me what oil filter and type of oil to use

How do I remove the bearings from the camshaft ... 
How do I remove the bearings from the camshaft to repair a broken piston arm? I have a Speedaire 4b227 two piston air compressor. I'm trying to replace …

Speedaire compressor motor spins slowly then stop an start again. 
Speedaire compressor does not build pressure .the motor spins slowly then stop an start again. I need to know what might be the problem why the pressure …

Air leaking from air filter SpeedAire Model 12766  
My compressor Speed Aire Model 12766 2 stage is leaking air from the air filter and around the pipes near the top of the heads.It fills tank to correct …

torque specs for compressor pump / model # 1wd21 
I need the torque specs for the head bolts on the compressor pump / model # 1wd21

Wrong pressure switch on Speedaire 2Z498 
I inherited a Speedaire 2Z498, with a Dayton 1/2 hp motor model 6K178-B, and a 3 gallon tank (1Z782 - 3034). It has no relief valve and what I believe …

Start up of Speedaire compressor 4YN50 
I have a honda eu6500is watt generator that keeps overloading when the Speedaire 4yn50a kicks in. is my problem with the generator not being powerful …

Speedaire Westward model 4TW29B compressor clanks and does not compress air 
Hello and thank you for your help. I've reviewed the trouble shooting area of your site. I have a Westward model 4TW29B. When I plug it in, the …

Convert 1z475 to run on Gas motor? 
Hi, I got this monster 1Z475 with non-original electric motor and would like to mount a gas 11hp on it (if thats enough power?) but rotation of gas motors …

Need help wiring up Speedaire compressor 
speedaire air compressor electrical hook up . from outlet to motor, to pressure switch. 220 5hp. motor

Speedaire compressor identification 
small portable with maybe a 10 gallon tank (24" long x 11" diameter). Looks like a 2 cylinder compressor (but small cylinders, maybe 2 1/2") and they …

arkansas dealer locations for Speedaire 
I am looking for a speedaire dealer in arkansas. I am looking to buy a Speedaire #4B234 and I am only interested in buying an American made product. …

converting speedaire 3z408 gas air compressor to electric 
trying to convert a speedaire 3z408 single stage 4 horsepower Briggs engine2 electric need to know the horse power thatI need the rpm and pollysize

Rewiring model 373551 from 115v to 230v 
Hi there, I got this air compressor (model 373551) and it has a USA plug on the end were you use 115v as where here in New Zealand we use 230v, I was just …

loud noises on my 2 hp / 20 gallon electric compressor? 
Is it possible that one of the pistons is hitting the cover plate of my 2 hp/20 gallon electric compressor? I took the plate off and ran a staight edge …

Speedaire compressor 2Z499 pops breaker 
My speedaire compressor model 2z499...the motor works fine but some parts need to be fix which I dont know...when I plug it in it starts fine only for …

Information on Speedaire air compressors 
I inherited a nice 1 HP Speedair compressor, 1 Hp. It has an oil tube on the compressor at the driven pulley side of the crankshaft/crankcase. I need …

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Speedaire gas engine Model 4b220 air blows out the vent on the throttle unloader 
Speedaire 5 HP Briggs and Straton gas engine Model 4b220. Air blows out the vent on the throttle unloader. I disassembled and cleaned the unloader and …

Not sure if my old SpeedAire Compressor (1Z286E) has PRV (pics included) 
Hi there I have an older Speedaire air compressor that I picked up at a yard sale, its model 1Z286E, with compressor model 2Z157B, with the 1/2 HP electric …

1WD21 pump on a 4XA59 compressor motor knocking at high pressure 
I have a 1WD21 pump on a 4XA59 compressor I believe from 2007. Used very rarely. The pump will have no problems filling the tank from empty and cycling …

Speedaire compressor #3Z176B started knocking 
older speedaire compressor pump model 3z176b- started knocking. On weekend I disassembled 2nd stage head and cylinder. Rod broken at piston wrist-pin. …

3Z355J auto shut off switch is broken ... 
The auto shut off switch has broken and I can not find a replacement assembly on the internet. I am not sure if a spring has broken inside or what …

Losing air on my Speedaire air compressor 3Z198A ... 
Dayton speedair Industrial duty air compressor. Model 3z198A Single stage CCW 5 HP. Used compressor all day and it worked fine. I heard compressor …

Speedaire model 5Z185A HP and RPM 
5z185A Could you tell me HP and rpm also I find the model no. 3z424F on another plate. I do not know how old this unit is but it has been a good one.

3 phase to single phase motor on Speedaire air compressor ... 
I have a speedaire 60 gal. compressor that's set up for 3phase with a 5hp motor. I was wondering if I can use a 6hp single phase motor wiht the same rpm's. …

2Z499 Speedaire correct head bolt torque 
Rebuilding my 2Z499 speed air compressor and need the head torque specifications. Where can I find the information? thanks

Converting 2 HP Speedaire to two lines ... 
Speedaire model 2WGX6 air compressor pump has one out let port for the pressure line only. I need a conversion kit to convert the head to accept the small …

How to adjust the pressure on a Speedaire 3Z124C 
I also need to know how to change the oil on the 1z943b motor ______________ Jeff, I can find no information on your Speedaire model 3Z124C air compressor. …

2Z869 Speedaire air compressor won't keep up pressure ... 
I got a speedaire compressor 2Z869 from my dad's basement. When I plug it in, it will build pressure to 60 lbs, but as soon as I open the valve on the …

Pressure leak from crankcase breather on model 5Z398B ... 
Will a top end overhaul kit remedy my problem? __________________ I don't know what is in the kit, Marshall. From your description, I suspect you …

Speedaire 4B247 swapped with 2Z499 and it's effect on CFM ... 
Hi all, I'm somewhat new to the world of air compressors so I did what research I could and selected a compressor off of Craigslist that had a reasonable …

Speedaire air compressor slows way down after building pressure ... 
Runs fast and normoal up to around 130 or so psi, then it really starts slowing down and laboring to build pressure up to the cutoff of 175psi. I already …

Speedaire bogging down when it calls for more air ... 
I have a 1hp 20 gallon Speedair, after twenty years the tank started to leak. I ordered a new tank and swapped the it over. The compressor works fine and …

Old Speedaire 3Z170B noisy and no compression on one head ... 
Hi, I have an old 3Z170B that is acting up. My son has been using it the last couple of years and now it needs some help. Doesn't look like the oil …

Info on Speedaire model 3Z361 ... 
Just picked up a Speedaire model 3Z361. I can't find ant info on the compressor. It needs a new pressure switch. Any info as to specs or where I can …

Air leak at pressure switch on Speedaire 3Z427 
I have an old compressor, Speedaire 3Z427. The compressor cuts in at 70 and cuts outs at 110. When it cuts out, there is an air leak at the base of …

direction of flywheel 
my older speedaire is a little noiser since i put heavier gauge wires to it.. I might have crossed wired it and it might be running backwards. How do …

Speedaire air compressor will not start under load  
7.5 hp 80 gal speedaire Dayton motor kept blowing breaker - took motor off and was told it was bad and replaced with Baldor motor of same specs Now when …

It wasn't a Speedaire compressor unloader valve failure ... 
I'm getting a constant hissing of air at the unloader valve site and the compressor is kicking on due to the air pressure loss. Is that due to failure …

Building a compressor using a Speedaire pump 
I need to know what direction the flywheel turn's. I have no modle number but the last three 57c. I allso would like parts manual and know where to get …

Speedaire compressor Model 4B227 blowing fuses ... 
Greetings Bill, All, When the tank is empty turn it on no problems fires up and runs great let the tank get too full and it will trip the breaker, anything …

Anyone recognize the Speedaire compressor number 3Z012A ... 
Grainger doesn't recognize the part number, It is an older pump that looks similar to the 3Z492A pump, but must be significantly smaller as it is running …

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Wiring issue on Speedaire compressor 
I just got model 5z185 how do you wire it _________________ Bill says... Dennis, that model may be a 3 Phase motor, and if so, you'll need to get …

How much compressor oil for the 3JR76 - 2.5 quarts and still pouring 
How much oil is needed to be placed in my 3JR76 Model Speedaire compressor. Ive already put 2 and half quarts and see nothing on the watch glass. ____________________ …

Coverting motor voltage on a Speedaire air compressor 
I have a Speedare compressor by Dayton model number 4B234D with motor MC015502. it is wired for 240VAC and i would like it to work on 110VAC. is that …

Speedaire compressor only runs for 30 seconds 
A speedaire compressor just came into my life, A friend told me it had something wrong with it but didn't know what when he gave it to me. It's an 80gal …

Speedaire compressor 4B227 has a noise problem 
I have a Speedaire 4B227 which I purchased back in 2007. I have performed all the normal prevenitive measeure on it. Now I seem to have a NOISE problem. …

Safety valve discharges while Speedaire compressor is pumping ... 
Is this normal,it stops when it shuts off.This is a model 3Z492. ______________________ Bill says... Allen, no, this is not normal. You say …

What size of electric motor for a 2Z630B 
Hey I have a speedaire 2z630b Its on a upright 60 gal tank. With no electric motor I have no idea what motor goes on this. Can some please help me. …

Speedaire model 1WD63 continuously leaking - check valve ... 
I have a dayton speed air 1WD63 7.5 hp compressor. The compressor will fill properly but when the motor stops then the auto tank drain valve will release …

Speedaire model 3Z405 crank worn out looking for spare parts ... 
I have a 3z405 compressor 3/4 hp motor with 2z498 pump. the crankshaft is worn out on the drive bearing, and i am looking for a new crank shaft. any …

Speedaire air compressor motor overheats ... 
speedaire--mod #3JR76 as the press goes up the comp. becomes harder to turn. at zero press the comp. turns freely @ 30 pounds of press, I can barly turn …

Speedaire model 3Z182 has valve flutter 
i HAVE A SPEEDAIRE 3Z182 COMPRESSOR THAT WAS POPPING OFF THE 70 PSI VALVE ON THE SIDE. WE REPLACED IT AND THE SAME THING HAPPENS. IT STILL BUILDS PRESSURE …

Speedaire 5F562E blowing breakers ... 
Help, I have a Speedaire Proffessional Compressor model #5F562E hardly used 5 or 6 years old. Blows a breaker everytime after running for aprox. 15 - 20 …

Get a manual for a beautiful older 1Z934 B Dayton Speedaire compressor ... 
Need a handbook so that I can service this old thing...or any suggestions of what to do and what parts to replace. Many thanks _______________ …

What voltage for a Speedaire air compressor ... 
I have an older Speedaire compressor. The model number is 3Z355B (sorry six characters not five as posted). It is a two cylinder, single phase compressor …

Speedaire air compressor rebuild ... 
Greetings, I have a Speed Aire Compressor that I am planning on rebuilding around the first of the year. I am not worried about doing the job but I …

Change the oil in my Speedaire air compressor ... 
It's a 20 gallon speedaire model 3Z419J. I've lost the manual. Bill answers... Hi Meg: Every brand of compressor is slightly different, …

Speedaire 4 HP air compressor keeps tripping out ... 
My Speedaire 4.5 gallon compressor keeps tripping or going out on thermo overloads even unloaded. Trips 20 amp breaker. Any suggestions? Thanks …

Speedaire air compressor oil questions ... 
I just purchased a used SpeedAire No. 4B247A. I have no Owner's Manual for it. 1) Is a manual available? and 2) What kind of lubricating oil does …

CFM and capacity of Speedaire air compressor ... 
Is there a way I can roughly calculate the output. It is a reciprocating type V piston arrangement twin cylinder. I can't find the specs for it and …

Info for parts??  
SPEEDAIRE BY DAYTON Compressor, Air, 1.5 HP Item# 1VN90 Cant find any info for parts on the compressor need head gasket

Old Dayton compressor start up? 
HP 2 Speed 425 Range of control 125 to 175 LBS CFM 9 Serial # 50321 Need to know what type oil and how much it moves freely but want to check …

speedaire 2z499 pump reeds 
I am changing the reeds on my compressor. I foolishly took the old ones off before getting the new ones, and now I can't remember which side the restrictors …

Modulator for Speedaire 5Z033A compressor 
While moving the compressor I pulled on the small hose and broke the stem to the modulator assembly. Any way I can get a new one?

What oil is used for speedaire 3z323b? 
What oil is used on this model? it's a 1 hp single phase. Thanks _____________ (Cesar, this info is already on this site. See the sitemap for pages …

Air pressure from the oil fill plug 
Why is there pressure in the oil holding portion of my compressor? I go to put the oil fill plug in and pressure builds up and oil spews while tightening. …

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Torque specs on connecting rods 3z323-2z499 
torque specs on connecting rods to crankshaft 3z323-2z499 cylinderhead What are the torque specs on connecting rods to crankshaft 3z323?

Schematic and parts for a Speedaire model 5Z044B  
I bought a Speedaire model 5Z044B recently. It needs a lot of work and parts. I went to Grainger and tried to get a schematic but was told that it …

How old is a 4B222A compressor? 
My compressor is a Speedaire air compressor. Serial # L3/12/77-09936 model # 4B222A. Our church has had it for quite a while and I would like to know …

users manual 4b246b 
where can I get a user's manual?

Info on a model 2z628 please? 
I have a model 2z628 would love a operator manual and specs bought this with no book

Loud noise coming from pump on model 3Z174 
speedy and model 3.z 174 b 2 stage sounds like a loud noise this is a hand-me-down compressor I asked about clapping noise from the heads of the …

Speedaire compressor has milky white oil 
Every month or so I have to change the pump oil,because it is milky white. I assume it has water in it, if so how/why? _________________ George, if you …

Speedaire compressor 4B220B not turning off ... 
On my air compressor I can get to the max psi and the motor will continue to kick on and not slow down the motor at all. I was wondering might be causing …

A bad head on a Speedaire 5Z185 air compressor ... 
Any one know of a place where I can find new or used head for a 5z185 compressor pump? It's a 5hp unit.

Does motor need oiling on Speedaire compressor model 3Z921 ... 
I have 3Z921 unit purchased appx 1985. It seems to run fine, but curious if there is periodic oiling requirement? I don't have manual and unable to locate …

Locating a manual for a Speedaire model 5Z405C compressor ... 
Where can I locate an Operator's Manual for Speedaire 5z405c ________________ Tom, since Grainger is still selling parts for your Speedaire 5z405c air …

Speedaire compressor has a cracked reed valve 
where can I get parts to fix my comp? Model # 5Z628B 2 stage, Model # on Comp is 5Z641. The serial # is 051894L-876090. _________________ I checked with …

Replacement air filter for Speedaire compressor 
Bill, I have a Speed Aire Model 2z 498 b. I'm looking for a replacement air filter that goes on top of the head, It's a small fabric piece about 1" square. …

Speedaire 3/4 HP will not air up 
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 …

Where does air enter Speedaire compressor 3Z922 
Speedaire 3z922 motor and pump assembly Was curious as to where air enters the compression cylinders the output is obvious but may have a blockage on …

3Z427 Speedaire air compressor - what is max air pressure 
I think I have a Speedaire Model 3Z427 compressor. It is identical to one I looked up on the internet. It has a single piston pump and a 1/2 HP motor. …

No tank and no motor - is Speedaire 2Z498 compressor any good ... 
Hi Bill, I have come across a speedaire compressor model 2Z 498 in my late grandfathers workshop. I found the unit alone, unconnected to a tank and motor …

Drain Speedaire air tank 
proper way to drain ________________ See tank information linked from the site map page. Tank drain should be on the bottom of the tank. B. …

Help identifying this Speedaire compressor pump ... 
Hello I can't identify this pump. It was originally painted green. My problem is that the crank shaft has broken off with the flywheel - I received …

Need info on older Speedaire compressor for dry fire system ... 
We need a new compressor to connect to our dry fire system and trying to get a good price in Alaska takes some research. All we can find on the current …

Brand new Speedaire 6ZC35 separator and cannot find element ... 
I'm trying to locate the oil seperator element and everyone tells me they no longer make the housing.Ok but are there any elements laying around anywhere?The …

Speedaire compressor will run for 30 seconds and then blow the breaker ... 
i have speedair compressor with dayton motor modL:lr22132 the motor will run for 30se and blow the braker do you think it is the run cap please help …

Speedaire air compressor 3Z395 will not pump air 
HOW TOO GET IT TO PUMP AND HOLD AIR WITH OUT OVER HEATING MODEL NUMBER 3Z395 C 1 ________________ Rex, tell me the conditions of the compressor. …

Parts questions for my Speedaire air compressor 
What is the name of the cup with a small filter called? When the oil exspands it captures it. I need a replacement. where can I get this item? _________________ …

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Flywheel rocks back and forth on Speedaire 3Z424E air compressor ... 
My Fly wheel rocks back and forth when you jiggle it. it doesn't fit tight against the pump. and my pump doesn't work very well, it leaks oil and doesn't …

Proper way to attach pipe on Speedaire intercooler ... 
Had to replace the intercooler pipe, is there a proper way to attach the pipe. I seem to be wrestling with it. Thanks

Have to wait for air to build up in Speedaire air compressor 4B247B ... 
Compessor only gets up to about 100PSI and is slow getting there and then air presure falls off fast when air tools are used. have to stop useing compressor …

Speedaire compressor oil issues 
I have Dayton Speedaire Model # 322198. On the compressor the oil cap or screw that you put oil in to is broken. I don't have the part number. Its made …

Motor size for Speedaire compressor model 3Z413 ... 
I bought this compressor that came without a motor, so I have no motor specs, other than it was a 25 HP, 3 phase. My questions are what HP, single phase …

34Z76 One cylinder will not pump 
it seems as though that one cylinder is pumping and the other is not and the compressor will not build over 90lbs. of pressure and runs and runs. Is it …

7.5 HP Speedaire compressor needs work 
parts for a model # 5z696a compressor book ____________________ Bill says... Elroy, I am happy to post this for you asking for information. What …

Speedaire air compressor has sputtering motor 
I have a 7.5 HP Speedaire Model: 5Z639A 1 Phase It starts fine but after about 10 seconds it begins to sputter ____________________ Hmmm. Sputtering …

Speedaire compressor oil sight glass leaking ... 
Has anyone been able to fix this problem?

Is this Speedaire the right compressor... 
every once in a while the 75 psi pressure valve in the head seems to stick and pump simultaneously with the head.valve was changed once and i was wondering …

Dayton Speedaire air compressor 3A419 what oil and how much ... 
I'm trying to find the oil capacity and what type of oil to use for this unit. Thanks. _________________________ Bill says... I don't have the …

Hand me down Speedaire compressor might explode on me 
I just was given a Speedaire 2z498 from my uncle as a gift.. I've looked everywhere for the manual. My question is does this compressor have a cut off …

Speedaire 1WD63 automatic tank drain 
I have a Dayton Speedaire 1WD63 7.5 HP compressor and the automatic tank drain seems to be discharging oily condensation but when I drain it using the …

Pump on Speedaire heats up excessivley... 
I am in Iraq at this time and have been given a Speedaire 1WD78 Air Compressor for my Soldiers to run their numatic tools. The problem we have is there …

Model 4B221 air compressor takes about 15 minutes to reach 80 PSI ... 
compressor takes about 15 mins to reach 80 psi. when i turn of moter pressure bleeds out the filter.note compressor has set un-used for one year.after …

Speedaire air compressor tank leak ... 
There is an air leak in the compressor where the motor mount is welded to the tank. We have a frame shop and have all pneumatic tools. It's not …

Speedaire 5F564 compressor runs then shuts off ... 
Is there something that should unload to allow the 12.5 hp gas engine to keep running after a set pressure is reached instead of cutting the engine off? …

Speedaire air compressor runs slow then stops ... 
model # 3z784, 2hp, phase(1) stage (1) ROT -- ccw dayton electric motor -- 9k4578 -- capacitor start duty 2hp 3450rpm 115/230v - 60hz single phase …

Head gaskets for Dayton Speedaire compressor 3Z961 
i have been searching the internet for head gaskets and a hose for my Dayton model number 3Z961. Do you have any leads? ______________________ If …

Regulator needed for a Speedaire air compressor ... 
I need to see where I can order a regulator for my speedaire compressor? Thank you, Vicki Knies Hydro Air Systems Inc ______________________ …

Wires melting and breaker blowing on Speedaire air compressor 
the white wire inside the off & on switch has melted and now the compressure will not start ___________________ Bill says... Brian, extending …

How much pressure in a 1 HP Speedaire compressor ... 
i'm getting ready to go to a auction to buy a 1 hp speedaire , i will be using it to work on my 18 wheeler and pickup , but i have not looked at it yet …

Speedaire pressure setting and cut off ... 
NEED WIRING INFORMATION--PRESSOR SETTING & CUTOFF PRESSURES. SAFETY INFORMATION FOR RUN COMPRESSOR. MODEL 3Z423C SPEEDAIRE 1HP 1PHASE 110VOLTS _____________________ …

Speedaire air compressor - removing centrifugal unloader 
Is the centrifugal unloader assembly screwed into the crank shaft or pressed ?

2Z498 Speedaire compressor will not build pressure ... 
I have a 1982 Speedaire 2Z498 stationary air compressor. I noticed on the very top of the head there is an open hole about 1/2 dia when I put my finger …

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My Dayton Speedaire compressor seized ... 
A technician diagnosed the need to replace the motor. I did that and the compressor worked fine and was quiet for a month. Now it bangs away like a bearing …

3Z355 Speedaire compressor won't restart 
I have a model 3Z355 Speedaire compressor. Here is my problem. The compressor builds the set pressure and shuts off, but when the pressure drops to the …

Speedaire compressor model 4B221 with 4B225 pump ... 
Unit will not shut off by itself. What part need to be replaced? Thank You ___________________ In the absence of a lot more info, all I can surmise …

Adjusting air pressure on a 10 HP Speedaire compressor ... 
i have a horizontal speedaire 10 hp two stage compressor 2007 serial # 1451673.how do i adjust the air pressure? Bill says... The cut in …

Speedaire air compressor PRV valve opening ... 
I have a 25 HP speedaire compressor that when it comes on the PRV valve on the head of the center cylinder automatically opens and stays open until the …

Speedaire 1Z218 compressor blowing oil ... 
The compressor gets to 40 psi and air starts blowing out through an opening in the front of the compressor. Bill answers... Hello Glenn, …

Wire a 115 Speedaire compressor to 220 volts ... 
The Speedaire air compressor is a Model 3Z395, with a Century 1 1/2 motor 120/220 vac. Model S-141459-20 There is no wiring diagram on the motor to show …

Unhappy with Speedaire compressor purchase ... 
I was very disappointed with my recent purchase of a 1NNF6 (portable 20 gal 120V) compressor when I saw that it is made in China. I ordered the same unit …

What oil to use in my Speedaire air compressor ... 
I have a speedair model 5Z185B air compressor(model #on the pump itself is 2Z499C. I need to know what type of oil to use for an oil change. …

Speedaire air compressor on off switch does not work ... 
The on switch is out need new one. It's a speedaire 3/4hp 125psi 3gal. 120volt 10 amp searl # 061792l 065907 Bill answers... Howdy Randy: …

Oil type needed for my Speedaire air compressor #2Z499A ... 
Would appreciate knowing value,approx age and type of Dayton motor # 9K323J / Speedaire compressor #2Z499A. Also,what kind of oil is used in a compressor …

Filter and regulator for a Speedaire 47028A ... 
I have a Speedaire stock # 47028a I know it's out of production.What can I do to change the filter, if possible. If not, what would be a compareabl;e replacement? …

Losing air pressure in a Speedaire air compressor ... 
What would cause you to lose air pressure the Compressor? Hi Walt...thanks for the question. Many things will cause you to lose pressure. …

Old Speedaire air compressor safe to run ... 
I was given an old Speedaire air compressor, which I'm told hasn't been run in 15 years. I plugged it in and it immediately started up, but I only …

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