Central Pneumatic Air Compressors


In North America Central Pneumatic air compressors are available at, and are the house compressor brand of, Harbor Freight Tools and are sold nationwide through their own stores.

The Central Pneumatic compressor line is also available on line, and through select distribution in other countries.

Harbor Freight Tools Corporate Headquarters is located in the city of Calabasas in Los Angeles County, California.

www.harborfreight.com

This brand of compressors appears to be targeted to the DIY market, small workshops and the automotive repair market with fractional HP through to 5 HP air compressors with the largest tank size being 60 gallon. They also have at least one model of gas powered air compressor.

This page provides a forum for all issues relating to Central Pneumatic Air Compressors. Below you will find postings with issues and comments about this brand of air compressors, from folks that use them


Central Pneumatic air compressor

If you have had any issues or have comments to make about your use of your Central Pneumatic air compressor, other users would like to hear from you.

First, you really must review the troubleshooting pages. The majority of issues posted about the Central Pneumatic air compressor line are problems encountered by many brands of compressors. Your answer is likely already there! For example, why air compressors run but don't build pressure, why they won't shut off, why they blow breakers, and so on.

Please add your experiences or questions (after you have read the existing questions & answers and troubleshooting sections please) using the form below. If your question has already been answered your question cannot be re-added to the forum.

I've added a search box here for your use to help you find the information you need about your Central Pneumatic (Harbor Freight) air compressor.

News: I'm gathering the specific tips that folks have sent in about Central Pneumatic / Harbor Freight air compressors and am putting them all here in one place, by model number, if possible. Hope this helps.

Thanks,

Bill

Central Pneumatic air compressor manuals


Click the link to download a manual to your computer. Don't forget to save it so you have it for future use.

Central Pneumatic Model 38898 manual
Central Pneumatic Model 47065 manual
Central Pneumatic Model 61454 manual
Central Pneumatic Model 61615 manual
Central Pneumatic Model 67501 manual
Central Pneumatic Model 67708 manual
Central Pneumatic Model 68064 Manual
Central Pneumatic Model 90234 Manual
Central Pneumatic Model 94667 Manual


Central Pneumatic Air Compressor Issues

Having an issue with your Central Pneumatic Air compressor?

Here are other visitor's issues with Central Pneumatic Air Compressors

Please see below.

420cc truck bed compressor dies 
I have a central pneumatic compressor and it starts but dies right after it starts. I have a 30 gallon 420cc truck bed compressor

No replacement prv available for #90221 
Only thing wrong with this compressor is the pressure relief valve is shot and releases pressure right away. Central Pneumatic says no replacement available. …

Automatic shutoff not working 
just bought 8 gal, oil lubricated compressor yesterday. it does not cycle automatically, just continues to build tank pressure until the pop-off valve …

Parts for Model 61454 air compressor 
Need crankcase cover gasket for model 61454 store air compressor.

Leaking oil model 95386 
It is leaking oil. What kind of oil do I buy. Will it shut itself off if the oil is too low. That is what it did a minute or 2 after i plugged it in. …

cp 42321 2hp 5 gallon compressor 
cp 42321 2hp 5 gallon compressor was running fine earlier and began to cut on and off and now will not start at all.

95275 Pops Reset Button and Blows circuit breaker 
Harbor Freight / Central Pneumatic pancake compressor model # 95275 pops reset and simultaneously trips circuit breaker the instant you press the ON button. …

Reason why reset switch keeps shutting compressor off. 
The reset switch kept tripping after about 10 seconds. I would wait a few seconds until it reset it's self and push the reset button and it would run for …

95386 oil leak 
model 95386 leaks out all the oil. works fill oil only to find in all on the floor the next day.

Compressor will not restart when pressure drops 
I have a two horse 8 gal. Central pneumatic compressor. When tank is empty it comes on and pumps up fine but when pressure drops and it try's to engage …

Won't pump up over 40 pounds of pressure 
It runs and runs but won't pump up over 40 pounds of pressure supposed to be 125 psi Max any tips to remedy this problem would be greatly appreciated

21 gal. 2hp blowing air from top of cylinder 
Tank is not pressurizing at all. Air constantly blows from up top of cylinder head. How can this be fixed?

62299 will not re-pressurize  
Hello--I have a Central Pneumatic 60 gal upright compressor Model#62299. It was working fine, turning back on when the pressure dropped to the correct …

47065 turns on, runs for about 10 seconds and shuts off. 
This compressor is over 10 years old. Is the 21 gallon, 2.5 hp from Harbor Freight. I think is model 47065. Basically, it doesn't matter whether the …

Need tube for a 95275 
I had noticed for sometime that the air pressure in the tank took a long time to fill. Now it won't fill at all. I took it apart today and found the problem. …

Central Pneumatic 67501 motor hums and then shuts off 
Completed checklist of all steps to start - still motor hums and then shuts off. After pushing reset button, try again and same result. Any ideas, pro? …

Price of 2HP 8gal HFT compressor 
What was the prices of 2HP 8gal HFT compressors around 2003 ? thanks

How do I change the fuse 
Compressor will not start. The reset button is not working its spring less. Maybe the fuse spring needs rreplaced

Fuse type for 60637 
My Central Pneumatic compressor (60637) blew a fuse. It's a 3 amp and I think it's a slo blo but I don't know the type (littelfuse 312,314 etc. Can you …

Need replacement capacitor 
Central Pneumatic air compressor model 95498. I need a capacitor for this air compressor. Capacitor - XUFENG150uF +- 5% 250VAC C 50/60Hz40/70/21 SH P1. …

61454 air compressor will not start 
Getting power both sides of regular but no start no noise or anything model 61454

Cold start valve on #67708 leaking 
The valve lets air out, so the pressure does not build up. I cannot find one to buy.

Parts for central pneumatic 60637 
ring and cylinder replacement central pneumatic 60637 compressor started making a lot of noise, now won't compress. scored cylinder walls and bad ring. …

central pneumatic blowing breaker  
i bought a central pneumatic 21 gallon 14 amp compressor from harbor freight it ran fine when got it and i just went to switch it on and it blew my breaker …

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Compressor model # 90234 "Air Leak" 
I have a model # 90234 Harbor Freight air compressor, about 8 years old. When it is turn on and running it leaks air from under/around the pressure value. …

Reassemble Central Pneumatic 21 Gallon pressure switch 
Hello Bill & Friends, My name is Lee. I just bought said compressor today 2-26-17 (Harbor Freight Central Pneumatic 21 Gallon cast iron vertical compressor …

61489 Central Pneumatic Compressor Won't Run! 
29 Gal. 2 HP (61489) Central Pneumatic Compressor Won't Run! Bought our Dad a new compressor (61489), got it in the shop and it wouldn't run. The …

Size of the outlet fitting on item #60754 
I recently purchased a #60754 dual cylinder air compressor pump and can not find the right size outlet fitting to the tank. It is suppose top be 3/4 …

Model 60637 slowed to zero 
Central Pneumatic 60637, 1/3 HP, 2 gal. Last use the compressor was working its way up to the 100 PSI level. At about half way the motor slowed down …

Where is he serial number located on my CP Compressor?  
Where is he serial number located on my CP Compressor? I have a 21 gallon upright compressor .

new 69667 will not start 
Central pneumatic model 69667, new, will not start

Central pneumatic compressor fix 
Look on YouTube the poppet valve on top of the cylinder casting ( it's a small brass fitting) has a weak spring unscrew it and pull it to make it longer …

Central pneumatic model 95386 oil leaking 
Oil leaking the engine not working

I am looking for a part 
I have a 2 hp 5 gal. Twin tank compressor. I am looking for a part and need a diagram as the compressor won't build air.

Complaint / concern 2hp air compressor 
I bought a 31 gallon 2hp air compressor from harbor freight, plugged it in and it works marvelously holds air and everything! But when i get to the point …

Harbor Freight 97080 will not turn on. 
Plugged in 97080 HF "hotdog" this morning, flipped switch and nothing happened. Worked fine last time I used it. Looks like fuse is ok but I will change …

Can't find replacement fuse for 60637 
pancake air compressor item number 60637 can't find replacement fuse. I have had this for over a year works great but the fuse needs to be replaced …

Manual Overload Protector for Model 67501 
I need a manual overload protector switch for my Central Pneumatic Air compressor model 67501. Where can I obtain this switch?

90385 won't stay running. 
2.5 hp 8 gallon compressor model 90385 that runs for 10 seconds and shuts off.I have to pull the cover off to reset the overload switch and turn it on …

Compressor will start and run for 10 sec and shut off. 
My compressor will start and run for 10 sec and shut off. I have to bleed the air line in order for the reset button to trip. I've check the capacitor …

3 gal model 95275 won't pressurize 
I have used my 3gal compressor once. Went to get the pressure up to 100 psi and now it won't pressurize past 20. It's practically brand new. Am I doing …

97080 Hot Dog compressor quit 
Ran fine for a year, only occasional use. Maybe 3 hours total. Then it quit. It appears to be a thermal gadget mounted away from the motor that won't let …

Need pipe from pump item 60754  
looking for a pipe from pump to tank pump item number 60754 twin cyl pump, line from pump to side of 60 gallon tank

Troubleshooting starting up a 69667 
I have a 69667 model number and when I flick the switch it won't start. I've tried several outlets in my house thinking it was the problem and even unplugged …

Start Capacitor Wiring For 93274? 
Bought a never used Central Pneumatic 60 gal air compressor model# 93274. It was missing the Start capacitor and Pressure switch. I have three wires …

Anyone else add a cast iron compressor pump? Help? 
Anyone added a cast iron compressor pump? What did you do for a disconnect switch feed? I recently purchased a 3hp Cast iron compressor from harbor …

Oil capacity of 5 HP Central Pneumatic seems incorrect  
I have a 60 gal 5 hp central compressor. Manual says 24 ounces oil capacity I added 32 and it's still not full

Get fuse for Model 97080 
Model 97080 / unable locate replacement glass fuse / are they available? The fuse on my 3 gal hot dog CP compressor blew and I am finding difficult …

Central Pneumatic has a starting issue 
It will not do anything when plugged in and turned on. Was working fine but now won't do anything. Tried the reset, plug checks good, motor free turning, …

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Air control unit # 42035 broken 
I have 4 new 42035 air control units that out of the box all have the same broken part which is the bowl baffle. Harbor Freight has no parts, are there …

Not building up pressure 
Compressor was working out great, than it started shut off at 40 psi. I tried draining it than waiting 10 min to restart it, build up to 90 psi than it …

Won't build past 40 psi and funny smell 
Pressure will not build past about 40 psi and has a funny smell. Motor continues to run. 21 gallon central pneumatic compressor.

Need piston kit for 68066, rebuild kit for 94734 
Looking for a part number on a replacement piston/cylinder kit for harbor freight 17 gal oil less part number 68066. Thanks for the help.

90221 reset pops after 10 seconds 
Central Pneumatic model 90221 keeps popping the reset after 10 seconds. I wait for 20 second and reset it and it works for another 10 seconds. …

67696 will not stop 
I live in Sudbury Ontario Canada I have a 6 gallon pancake style compressor item#67696 which I recently got as a gift. I followed the directions close …

Central Pneumatic air compressor will not run 
I layed it down to transport it and now when I start it the fan comes on and stops and the motor hums?

Central Pneumatic model 61454 overload 
Central Pneumatic 21gal compressor (61454) keeps tripping overload protector I have a 5 year old central pneumatic 21gal compressor model 61454 that …

Turn on the compressor only the fan starts 
I have a Central Pneumatic Air Compressor 2.5 HP - 8 gallon, model 90385 from Harbor Freight. When I turn on the compressor, the fan starts but the …

Is there a reset switch on my 42321? 
My Twin Tank 2 HP 5 gallon will not come on The last time I used my Air Compressor it worked fine. I plugged it in yesterday and it will not come …

Central Pneumatic compressor has air leak around regulator 
8 gal 2 hp air compressor Model 95386. Need a gasket that goes between regulator and pressure gage assembly an the pressure switch. Do I need to …

Overloads on Automatic Restart 
I have a Central Pneumatic 90234 compressor which I left at an unsecured storage facility. When I recovered it and tried to use it, it would not shut off. …

My Central Pneumatic air compressor will not start 
I have a Central Pneumatic 29 gal oil lubricated compressor and when it tries to start when the pressure in the tank is about 120lbs it will not start …

Central Pneumatic 42321 Keeps running 
My compressor keeps running till the manual pressure release value engages at 120 psi. I have looked on line and the DIY people say to take off the …

3 gal. 1/3 HP 100 PSI Oilless Pancake Air Compressor overfilling 
Alright, so I've had this compressor since about March and today I setup the compressor so I can use my airbrush. I plugged the compressor in and as it …

Complaint about Central Pneumatic compressor #61615 
I have 3 Gal. central Pneumatic air compressor Model 61615 and I needed a new reset button for it. I asked H. F. customer service for a replacement, …

Assembly diagram for 94734 
I have an older Central Pneumatic Air Compressor, which I purchased used. I believe its model 94734. I need to replace the bearing that is on the crankcase …

Wiring diagram for the 3 gallon central pneumatic pump? 
I'm looking for a wiring schematic for the 3 gallon oilless central pneumatic pump. I bought one with no fuse and undone wiring.

Can I get parts for my 3 gal oiless pancake compressor? 
I have disassembled and found a broken reed? on the upper valve plate. Purchased from Harbor Freight over a year ago tho seldom used it. Quit while airing …

2 Hp 125 psi air compressor wont build any air 
i have a small black 8 gallon 2Hp 125 psi air compressor that wont build any at all . and i was wondering if you could help me out ? i have checked …

Harbor Freight 68127 runs for a while the blows the breaker motor getting hot. 
My compressor will run for a few minutes fine and then will slow down and stop(popping the reset switch) i can press the reset switch and it will try to …

Foreign material in Central Pneumatic tank? 
I have a 3 gal 1/3hp Central Pneumatic oil less pancake compressor. 1st one died in 1 month, store replaced it without a problem. This one is brand new. …

central pneumatic owner's manual doesn't cover fuse info? 
I just got a 3 gal central pneumatic hot dog air compressor and the fuse keeps burning out after 30 mints of use. Should I return it for another or is …

21 gallon spits oil..where you pour the oil in 
I recently added oil to my air compressor.and when I turned it on it started spitting oil out of a tiny hole where you pour the oil in I have no idea what …

Where can you get repair parts for a 61615 oilless 
Will only pump to 20 pounds need to find pump parts. Called Harbor and they have no clue where to get the parts.

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Model 95386 compressor does not shut off 
I have a Model 95386 compressor and it does not shut off when it reaches 115psi, what can I do to fix this issue?

Central Pneumatic Model 90234 stopped working 
My air compressor is central pneumatic model 90234. This compressor has a lose bolt (number 17 on the owners manual) and stopped working. We fixed that …

Pressure in Central Pneumatic compressor will not stay constant 
Hi, I have a central pneumatic air compressor 4hp 17 gallon Model 99780. The tank will build pressure with no problem but when I start to use my air …

Central Pneumatic 67696 No Output 
I saw a similar post which was very informative and well written. My model 67696 oil-less compressor was running normally and stopping at 150PSI. When …

Central Pneumatic compressor reset button won't reset 
reset button won't pop out to reset. compressor was overloaded with oil running and spewing oil out of the overfill hole. i shut it off and now the reset …

Central Pneumatic 67847 compressor only runs for a few seconds 
My compressor runs for a few seconds then cuts out put new pressure regulator switch on lf-10h same as the one that was on there still does same thing, …

Central Pneumatic Air Compressor Motor slows, stops (and hums), then trips overload switch 
This sometimes happens right after it's achieved full speed. It suddenly just slows down. I can turn the compressor shaft easily by hand. The start …

Central Pneumatic 95275 very little air comes out of the quick coupling 
Harbor Freight Central Pneumatic 95275 pancake compressor pumps up to 100 psi and then shuts off correctly, but very little air comes out of the quick …

PRV valve keeps popping open on Central Pneumatic air compressor 
I have a Central Pneumatic 2 h.p. with 8 ga. tank. Every time I use it lately the prv valves pops open at around 50 or 60 p.s.i.. It has adequate oil …

Central pneumatic compressor starts and stops 
I just bought a brand new central pneumatic 2.5hp 21 gal compressor. Attempted to break it in and the motor would turn over but not run and kept tripping …

compressor kicks reset 
I bought a 2hp 4 gal twin air compressor from harbor freight about a year or two ago now it pumps about 40 pounds and kicks reset. Is the reset bad? if …

My CP compressor won't start when cold 
It turns over very slowly and then trips the breaker. I have to shut it off and then wait for the click and retry several times before it eventually speeds …

Plastic Fan Needed for central pneumatic 95386 
I have a central pneumatic 2-HP-8GAL.Mod-#95386 and im in hopes that someone may have the plastic cooling fan on hand in there pile of CP …

How much oil in a 8gal, 2HP Central Pneumatic Air Compressor 
Used air compressor I just received. I am trying to put oil but it does not fill the tank. I cannot see any oil through the clear marker. I have given …

Cannot find fuse on 96068  
Hello, I have Central Pneumatic 12 volt car air compressor I bought from Harbor Freight. Item # 96068. It worked great for a couple of months then …

my compressor flywheel wont turn??? 
hi my compressor runs but the flywheel wont turn??? whats the issue and how do i fix it??? any assistance would be great..... thnx!

what type of oil does it take? 
Central Pneumatic pancake air compressor model # 95499 __________________ Jennifer, in the absence of specifics about the compressor oil normally found …

Solving a Central Pneumatic 67708 compressor quitting during use 
Breaker reset, only hum, no run, then breaker blows again. Only had about an hour of use since new, but out of 90 day warranty. Read about similar compressors …

Model #36225 manual 
Can I get the manual for the 36225 unit. I can not locate the one I had. _________________ Hi Jim. Did you try Harbor Freight? I haven't been provided …

I added motor oil in my 40400 
I added motor oil in my 40400 model, now the oil coming out from the overfill _______________ What you refer to as the overfill is, I suspect, the oil …

central pneumatics 47065 tripping curcuit breaker 
Motor tries to start and then breaker trips. Is this caused by the starter capacitor? There is no load on compressor when trying to start. The …

Oil leaking out of 67847 filler cap 
Hard to see oil level bubble on Model 67847 Air Compressor. After adding oil, oil now shoots out of cap. Drained oil and refilled and still same …

2 HP Central Pneumatic air compressor will not build air 
I have a Central Pneumatic 2HP, 115 PSI 8 Gallon tank. When I turn it on, it won't build up any air. Is there any thing I can do other than replace the …

I have to continually press the reset on my compressor 
when air compressor starts to build pressure the reset switch will kick off. i have to continually press the reset switch about every minute, why does …

68740 Central Pneumatic air compressor popping the reset 
Keeps popping the reset around 40 psi. Its a central pnumatic 68740 _____________________ Is the air compressor running a lot longer to get to the 40 …

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Replacement air filter size for Central Pneumatic Model 67708 
I would like to replace the plastic air filter with a metal one. What size should I look for? Thanks, Scotty ______________ When I look at this compressor …

Central Pneumatic air compressor model 67708 pops reset button every few seconds 
CP 67708 brand new - plugging in for initial 30 minute run and the reset button pops in ten seconds or less from when I turn on the unit. No pressure is …

90234 compressor has insufficient air pressure 
Hi Bill, Re: insufficient output air pressure from Central Pneumatic 90234 compressor I have a Central Pneumatic 90234 air compressor I got a couple …

Looking for a handle and a regulator? 
I am looking for a handle and regulator for my central pneumatic compressor 4 hp 10 gallon 90234 Thank you. Roy __________________ Roy, a handle …

Safety valve blows on my Central Pneumatic air compressor 
When using my CP compressor (2 HP, 8 GAL) to power framing nail gun, it builds pressure rapidly, then the safety valve blows, and this repeats. It used …

Central Pneumatic model 47065 blowing the start capacitor 
I have the 47065 that so many people buy and seem to have trouble with. Barely any hours on it and it began to trip the reset button. Trying to …

Model 94734 only builds to about 40 PSI 
i have a dual tank protable air compressor that would build psi but would only get to about 40psi and stop,, but keeps running, i have tried adjusting …

Central Pneumatic 95386 will not start 
I plugged it in and turned on the compressor and it ran for about 10 seconds and stopped. In those seconds it seemed to run real slow. The oil level is …

Central Pneumatic air compressor shuts down prematurely 
2 hp 8gal. keeps shutting down prematurely. Usually will not restart until much later. Changed start capacitor and checked the reset breaker. No help …

Central Pneumatic compressor model 95948 lasted 100 days 
Fire Department got one to keep air up in truck air brake tank, lasted 100 days. Ran about once a day on average. Warranty is for 90 days 1 year on tanks. …

Model 92504 only builds to 115 PSI 
Central Pneumatic Model# 92504 Builds pressure to 115 psi then check valve opens. compressor run till manul turn off? been used less than 25hrs parts …

Central Pneumatic air compressor 93786 reed valves 
Central Pneumatic 5HP Reed Valves No.93786 Im looking for two reed valves and head gaskite for my compressor i have looked every where and cant locate …

Central Pneumatic compressor 38898 has a leaking gasket 
My compressor was leaking air. Took off the cover that says DO NOT REMOVE. NO OWNER SERVICABLE PARTS. It is the switch compartment. Found a gasket …

Central Pneumatic compressor will only go to 30 PSI 
My main tank air pressure will only go to 30psi no matter how long the pump runs. Everything sounds ok and it pumps from 0 to 30 normal enough. …

The Central Pneumatic air compressor stopped building pressure 
Had a CP pancake compressor for about a year now. Worked very well with light nailing jobs. Just recently was doing a project and the compressor stopped …

Compressor motor on my Central Pneumatic air compressor is smoking 
Modell# 95386 - Need Crankcase Cover Gasket I have 2 HP , 8 Gallon, 115 PSI Portable Air Compressor Modell # 95386 CENTRAL PNEUMATIC , i BOUGHT FROM …

40400 check valve shattered? 
Check Valve for Model 40400 - had a crack in it. When I went to remove it, it shattered into a half dozen pieces of Chinese pot metal (its not brass).. …

Why won't Central Pneumatic air compressor build pressure 
I have an older version of the central pneumatic 67847. It's a 21 gallon 3hp compressor. I bought it used, and on the way home it rolled over. The …

My central pneumatic air compressor needs oil every week 
5hp two stage compressor made by cenral pneumatic item #93786 ___________________________ In the absence of a large oil spill on the floor under your …

Central Pneumatic air compressor give only a short burst of air  
central pneumatic - short burst of air 2 seconds at air hose I have a central pneumatic 4 horsepower, 26 gallon air compressor used it for 3 years no …

Central Pneumatic air compressor air hose will not fit 
I got a central pneumatic air compressor but my airhose won't fit to it. Is there something I can do so that that it will The hose on the end is 1/4 …

Central Pneumatic air compressor - where do you add the oil 
Making a loud noise. Lost the instruction manual. Think it needs oil. Where do you add it? _________________________ Hi Tom. Bit hard to figure where …

Central Pneumatic air compressor keeps popping reset 
I turn on my air compressor and it will run up to about 25 pounds and pop the black reset button on the side of motor, i wait a few minutes reset and it …

Central Pneumatic compressor shuts down before reaching cut out 
I have a Central pneumatic Compressor that will start up fine but will shut off before pressure is reached. I have checked the Pressure Switch and …

Air pressure on central pneumatic hose will not get over 30 PSI 
I cannot get the pressure out of the tank above 30 pounds. I have tried to turn the adjustment knob and it has no effect whatever. Is there something …

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Regulator issues on Central Pneumatic air compressors 
i have a central pheumatic by harbor tools i had 2 years. I didn't know regulator was not working until my friend blew his boat tire up...i probably bought …

Central Pneumatic air compressor will not pump up past 60 PSI 
need some troubleshooting tips to help fix the problem. ______________________ Assuming your compressor pump is working correctly, then the air that's …

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