So mine had the same problem and after changing caps it would still blow the breaker. After some research I discovered that there is a 2 stage switch inside where part of cover presses against a little part of this switch to depress it. My cover had pulled away from it leaving the compressor in 2nd gear as a description. I was puzzled for years. Finally one day found a UA-cam on this and voila has worked perfect ever since. I had to fabricate a holder to keep the cover part of it pressed against it. Mine was a craftsman like yours but one that lays on its side.
One video that will show how the switch that changes to the start capacitor is called “Fixing The Impossible Air Compressor” this guys UA-cam channel is Sams Wood Creations Once I saw a video showing how that clutch type activated switch works it lead me to be able to get my breaker blowing problem solved for good. My compressor was trying to start from its run capacitor rather than its start capacitor.
I was wondering if the motor was binding for some reason...turns out you needed the 40 microfarad, not the 50 microfarad capacitor Thanks for the update, the video will always be here for all the people that make the same mistake. Congratulations on a nice fix.
Thanks for following up on this video. I know it's been posted for a while but I'm just getting to solving my problem with a similar compressor. Your experience was much appreciated and thanks for sharing.
So I have the 2hp 33gal 150psi compressor and it just started doing the same thing, glad I saw your video! Question: where do you go for the parts, capacitor?
Very nice, sometimes it’s better to just use oem replacement parts. Glad that you were able to figure it out. I have an older Craftsman 27 gallon horizontal that looks like it’s from the same era as yours, they are work horses.
So I have the 2 hp 33 gallon 150 psi compressor and it just started doing the same thing so I’m glad I saw your video. Question; where do you go for your parts?
Very helpful. I've been hunting down this cap for a few days now, thanks. I'm going to thread in a Solberg filter to the intake, they really do work to quiet down compressors.
Hey mines is having the same issue cold start won’t trip it but once it runs for a few mins it will trip it every single time at about 60/80psi. Do you think mines would be the run cap also? I have the same exact craftsman’s air compressor!
Hi Binh thank you very much for sharing your knowledge and time. I have model 2005 craftsman 919.168700 33 gal vertical oil less 6 peak hp. The last time i used it was 8 years ago and it has been sitting in my house storage ever since and never been used. It looks shiny brand new outside because its hardly been used.I had the same problem with this compressor tripping the fuse intermittently in the past. I am planning to used it again and recently i found out it has Devilbiss recall. I did hear you mention it in one of earlier troubleshooting fuse tripping video where you made some big and small holes on the inside motor cover for venting the motor because you could not get the replacement kit when they had the recall going on. I am still searching in the internet for the replacement recall kit which contain the external front and rear cover/shrouds and no luck so far. It seems the replacement recall kit are made of better fire retardant material but looks similar in design. Were you able to find the replacement kit? What are your experience and how did you solve the recall issue? Moreover since its been in storage inside the house sitting empty for the last 8 years, i drained it recently and 1/4 cup of light brown water came out of it and not much of rust. Do you think i should do a hydrostatic test on the compressor before i put it to use? Or is it an overkill? . How do i do a hydrostatic test on this compressor? There are only 2 outlet on the top. I have not started it until today because it seems the external shroud that cover the motor might catch fire if it gets too hot. While i was looking for the replacement recall kit, i stumbled upon my past fuse tripping experiences and i thought i might just post it in the internet and try to find some help. Here i am but 10 years late to look for solution. I will really appreciate if anybody else could share their experiences if they have the same problem finding the shroud replacement recall kit or how should i proceed to solve this problem. Or should i just go ahead and start the compressor up but not fully but half way to find out if it still works and make sure my safety valve is not stuck and its in working condition when i pull it. All I am afraid is if the tank explodes if i fill it up to its full capacity. I might still have the same fuse tripping problem lingering around in the background. But i am trying to solve one problem at a time before i tackle the fuse tripping problem. I am posting it here because i have a feeling that frequent fuse tripping has something to do with motor heating up prematurely without proper venting of the shroud but i can be wrong. Again thank you in advance for your time and patience, have a wonderful day.
The motor tripping fuses is a capacitor issue. Replace them as they are only good for 6-9 years depending on heat exposure. I have links in description to Amazon replacements. The cover is no longer found since it’s so old. I had no luck with craftsman. I just drilled holes for air flow which is what the new cover has. Mine broke so I rigged the screw with holding plate. The hydro test should be easy but you need to put new fitting on the entry hole to fill with water and then pressure washer. I have a video on my channel where I did it for my IR 60 gallon. It’s also a good idea to add a remote drain ball valve to easily drain tank periodically.
@@TunerwithKids Thanks again for getting back to me. Did fitting the right capacitor with right capacitance fixed the fuse tripping problem until now.....its been 10 months now? Would you suggest that i make some holes on the cover that holds the run and start capacitor on the other side? Does the holes help to dissipate the heat and keep the motor cooler? Did you changed both the start and the run capacitor to begin with the problem? I am pretty sure you are right that capacitors do age out and needs to be changed and this compressor is an old one too. I have to start the compressor up and see how it fires up.And the remote drain ball valve will surely make the draining process more easier and faster. I am kinda hesitant to take apart the parts because of the crispiness of the aged plastic shrouds when you want to do the hydro test. Wish me luck and see how it goes....have a nice weekend.
@@rajm5244 bro, i think you're overthinking this. If it trips the breaker, replace the caps. Drill some holes, if you want, like this guy showed in his other video. Otherwise, get on with your life.
Try making access points and point a fan at it and see what happens.i have a cheap wire welder that didn’t come with a fan but has an overload kill switch,I point a fan at it and it never shuts off now
Great video. I will order from the link in your description. My question is does it matter which side the wires go on. I dont see any markings on my current capacitor to suggest the specific side for each wire.
thanks so much. My compressor has started running about 30 seconds then trips my 20 amp house breaker. I blamed everything, disconnected the compressor, belts everthing down to the motor only. It runs about 30 seconds so I removed the capacators. well its a big problem since its a craftsman build in the 90's. the capacators are under shields on top of the motor. And the correct ratings are almost impossible to find, forget the fit. everyone that sells them said oh this is close...it should work.Anyway I will find the correct ones and even it I have to use duct tape I will get replacements.
I have the 60 gal 6 hp oil free unit like yours but don’t have your problem and mine is a 1994 but I got tired of all the noise and rebuilding the pump so I separated the pump from the motor and got a 5hp oil unit from H.F. since I have the 6hp motor but (spoiler) it’s not 6hp which you probably know being an engineer.i think it’s closer to 41/3hp and would have gotten a 31/2hp pump had I realized that sooner but I think it will still work.i wanted more using as much of what I had as I could and only have to get a pulley and finish building a new platform for tank top and I should be in business.if you use yours as much as I use mine you may want to consider it
So I have the same compressor and I think the run ambassador was already changed at some point I would like to know if you could give me the exact numbers like 45 UF 370 v AC is mine what are the numbers on stock pastor or can you send a link to the right ones
If you have same compressor, pull old ones to see what’s in there. I have links in description to the ones I used. FYI, I have a follow up video that figured out the issue. I put the wrong sized cap previously and phase balance was off when motor was running which runs hot and pops breaker.
If you keep the compressor in same spot connected to same out you might just want to add a new 20amp outlet with a new 10/2 w/ ground wire to a new 20 amp breaker. That will solve your issue much better and it will be easier on your compressor.
I have had this thing trip so much, i ran a conduit stub off my main panel with either 10 or 12 gauge wiring and it still did it. I had added server fans to the compressor heatsink area, but i'll add one to the motor housing and replace the caps.
So year later. What exactly was the solution to your issue? Was it just the capacitor? Mine is tripping circuit breaker before it fill the tank. And then it won't even start.
I had the wrong run cap, it threw off the phase balance and overheated. The cap needs to match existing uF rating. If your is tripping on start, you start cap is bad. Take both out and check the rating, order the ones in my links in description of its same size, else search P/N for replacement.
I purchase used de same compressor rmodel in your video. At the time of purchase did not notice that the capacitor was missing. Thank you for your respond.@@TunerwithKids
Question, after watching your video, I replaced both capacitors and it ran for a minute, I turned it off and then tried it again but keeps tripping the breakers again. I have tried multiple outlets so it would be running off a different breaker and even trips a 30 amp breaker. Any idea what would be causing this issue for me?
@@TunerwithKids Exactly the same. I watched a man show that the cover if not completely seated can keep the centrifical switch from engaging. So I made a bracket as he did to bolt it to the case but it is still tripping the breaker this morning after correcting that. Do you know if the motor has brushes inside?
@@TunerwithKids My neighbor has the same compressor is about to buy a big compressor for his shop so I guess I will just get his motor and swap them. Surely that will fix it. Thanks for the help.
Check the check valve. If it is bad the compressor will start with little or no air in the tank but can't start when there is pressure in the tank, causing the compressor to lock and overamp which trips the breaker. To check for it, drain the tank and see if it starts and runs ok with 0# in the tank. Then try to start it with 100# in the tank. If it starts and runs when the tank is empty, but won't start with pressure in the tank, then there's a good chance it is the check valve stuck open.
Monkey arcade…I had same problem on old sears craftsman 33g 6H and the check valve/unloader valve; same part; was the issue. It wasn’t correcting the amount of air above pistons after tank would try to restart after being filled the first time 20 mins prior. The initial start was successful (tank was empty from last time I would of used & drained so no air above pistons to overload the amount of electric it would call for and kick the breaker like it was on second startup attempt) Easy to change this valve without getting into motor and cheap $20 part. This sounds to be your issue too
Check the power connections. If it doesn’t do anything of click, might be the pressure switch seized. That’s a mechanical device with springs and might have corroded.
@@TunerwithKids it makes no noises other then the click of the red on/off lever when I move it. Like it’s not getting any power to it. Where it’s plugged in has power I checked it with something else. In the past this compressor would pop breakers either when it was filling with air or right when I flipped the red lever to turn it on. I’m a very handy person when it comes to working on car and most anything, but I’ve never been good at diagnosing electrical problems. Tempted to throw it out and just buy a new one.lol.
You main need to use a multimeter and check voltage. See if its getting passed the switch. If the start capacitor is done, it won't move when powered on.
@@TunerwithKids If the start cap is shorted it will trip the breaker. If the cap is open, the motor will likely hum and you may see the fins oscillating as the motor tries to start but cant get the kick it needs. Eventually, if left like this it will trip the breaker also.
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So mine had the same problem and after changing caps it would still blow the breaker. After some research I discovered that there is a 2 stage switch inside where part of cover presses against a little part of this switch to depress it. My cover had pulled away from it leaving the compressor in 2nd gear as a description. I was puzzled for years. Finally one day found a UA-cam on this and voila has worked perfect ever since. I had to fabricate a holder to keep the cover part of it pressed against it. Mine was a craftsman like yours but one that lays on its side.
Can you share the video? I’m trying to fix mines also only trips after running for a few mins annoying me. Thanks bro hopefully I can figure it out!
One video that will show how the switch that changes to the start capacitor is called “Fixing The Impossible Air Compressor” this guys UA-cam channel is Sams Wood Creations
Once I saw a video showing how that clutch type activated switch works it lead me to be able to get my breaker blowing problem solved for good. My compressor was trying to start from its run capacitor rather than its start capacitor.
I was wondering if the motor was binding for some reason...turns out you needed the 40 microfarad, not the 50 microfarad capacitor Thanks for the update, the video will always be here for all the people that make the same mistake. Congratulations on a nice fix.
Thanks for following up on this video. I know it's been posted for a while but I'm just getting to solving my problem with a similar compressor. Your experience was much appreciated and thanks for sharing.
Mine just started doing this and I figured its the start capacitor. Glad to find this video.
Good to replace both. They only have a 5 year life these days.
@@TunerwithKids where did you get the ones that fit correctly?
@@momo-hm5ru they don’t. Only one fits. The run cap I had the rig it onto the cover. See links in description.
So I have the 2hp 33gal 150psi compressor and it just started doing the same thing, glad I saw your video!
Question: where do you go for the parts, capacitor?
@@bertmcnaughton8078 check links in description. Amazon has it all.
Had the same problem and had it working for a while . The start switch is funky in mine. Thank you very much . I’LL TAKE A LOOK AT MINE.
Very nice, sometimes it’s better to just use oem replacement parts. Glad that you were able to figure it out. I have an older Craftsman 27 gallon horizontal that looks like it’s from the same era as yours, they are work horses.
So I have the 2 hp 33 gallon 150 psi compressor and it just started doing the same thing so I’m glad I saw your video.
Question; where do you go for your parts?
Very helpful. I've been hunting down this cap for a few days now, thanks. I'm going to thread in a Solberg filter to the intake, they really do work to quiet down compressors.
Thanks for your videos. I’m ordering the capacitors now. I’ll let you know if it works when they come in the mail.
Hey glad you found the fix !
Hey mines is having the same issue cold start won’t trip it but once it runs for a few mins it will trip it every single time at about 60/80psi. Do you think mines would be the run cap also? I have the same exact craftsman’s air compressor!
Hi Binh thank you very much for sharing your knowledge and time. I have model 2005 craftsman 919.168700 33 gal vertical oil less 6 peak hp. The last time i used it was 8 years ago and it has been sitting in my house storage ever since and never been used. It looks shiny brand new outside because its hardly been used.I had the same problem with this compressor tripping the fuse intermittently in the past. I am planning to used it again and recently i found out it has Devilbiss recall. I did hear you mention it in one of earlier troubleshooting fuse tripping video where you made some big and small holes on the inside motor cover for venting the motor because you could not get the replacement kit when they had the recall going on. I am still searching in the internet for the replacement recall kit which contain the external front and rear cover/shrouds and no luck so far. It seems the replacement recall kit are made of better fire retardant material but looks similar in design. Were you able to find the replacement kit? What are your experience and how did you solve the recall issue? Moreover since its been in storage inside the house sitting empty for the last 8 years, i drained it recently and 1/4 cup of light brown water came out of it and not much of rust. Do you think i should do a hydrostatic test on the compressor before i put it to use? Or is it an overkill? . How do i do a hydrostatic test on this compressor? There are only 2 outlet on the top. I have not started it until today because it seems the external shroud that cover the motor might catch fire if it gets too hot. While i was looking for the replacement recall kit, i stumbled upon my past fuse tripping experiences and i thought i might just post it in the internet and try to find some help. Here i am but 10 years late to look for solution. I will really appreciate if anybody else could share their experiences if they have the same problem finding the shroud replacement recall kit or how should i proceed to solve this problem. Or should i just go ahead and start the compressor up but not fully but half way to find out if it still works and make sure my safety valve is not stuck and its in working condition when i pull it. All I am afraid is if the tank explodes if i fill it up to its full capacity. I might still have the same fuse tripping problem lingering around in the background. But i am trying to solve one problem at a time before i tackle the fuse tripping problem. I am posting it here because i have a feeling that frequent fuse tripping has something to do with motor heating up prematurely without proper venting of the shroud but i can be wrong. Again thank you in advance for your time and patience, have a wonderful day.
The motor tripping fuses is a capacitor issue. Replace them as they are only good for 6-9 years depending on heat exposure. I have links in description to Amazon replacements. The cover is no longer found since it’s so old. I had no luck with craftsman. I just drilled holes for air flow which is what the new cover has. Mine broke so I rigged the screw with holding plate. The hydro test should be easy but you need to put new fitting on the entry hole to fill with water and then pressure washer. I have a video on my channel where I did it for my IR 60 gallon. It’s also a good idea to add a remote drain ball valve to easily drain tank periodically.
@@TunerwithKids Thanks again for getting back to me. Did fitting the right capacitor with right capacitance fixed the fuse tripping problem until now.....its been 10 months now? Would you suggest that i make some holes on the cover that holds the run and start capacitor on the other side? Does the holes help to dissipate the heat and keep the motor cooler? Did you changed both the start and the run capacitor to begin with the problem? I am pretty sure you are right that capacitors do age out and needs to be changed and this compressor is an old one too. I have to start the compressor up and see how it fires up.And the remote drain ball valve will surely make the draining process more easier and faster. I am kinda hesitant to take apart the parts because of the crispiness of the aged plastic shrouds when you want to do the hydro test. Wish me luck and see how it goes....have a nice weekend.
@@rajm5244 bro, i think you're overthinking this. If it trips the breaker, replace the caps. Drill some holes, if you want, like this guy showed in his other video. Otherwise, get on with your life.
Try making access points and point a fan at it and see what happens.i have a cheap wire welder that didn’t come with a fan but has an overload kill switch,I point a fan at it and it never shuts off now
Lowes sells a universal filter kit that should fit your air filter.
Great video. I will order from the link in your description. My question is does it matter which side the wires go on. I dont see any markings on my current capacitor to suggest the specific side for each wire.
If it’s two terminals, no it doesn’t matter. But I think the compressor side has two doubled up and another single wire.
Thank you!
Do you need to empty the tank before replacing the capacitors? Thank you
No.
thanks so much. My compressor has started running about 30 seconds then trips my 20 amp house breaker. I blamed everything, disconnected the compressor, belts everthing down to the motor only. It runs about 30 seconds so I removed the capacators. well its a big problem since its a craftsman build in the 90's. the capacators are under shields on top of the motor. And the correct ratings are almost impossible to find, forget the fit. everyone that sells them said oh this is close...it should work.Anyway I will find the correct ones and even it I have to use duct tape I will get replacements.
I have the 60 gal 6 hp oil free unit like yours but don’t have your problem and mine is a 1994 but I got tired of all the noise and rebuilding the pump so I separated the pump from the motor and got a 5hp oil unit from H.F. since I have the 6hp motor but (spoiler) it’s not 6hp which you probably know being an engineer.i think it’s closer to 41/3hp and would have gotten a 31/2hp pump had I realized that sooner but I think it will still work.i wanted more using as much of what I had as I could and only have to get a pulley and finish building a new platform for tank top and I should be in business.if you use yours as much as I use mine you may want to consider it
I upgraded to a 60 gal IR T30. 🙌
if you turn on the switch, and the motor is not running. What should I look for? I have the same compressor.
Make sure power is going through pressure switch to motor. If these is voltage, maybe start cap is dead.
I have the same compressor. What was that filter looking thing between the air outlet and hose? Do you have a video on that as well?
Probably water/oil separator or moisture drain. All compressors should have one. amzn.to/3U3Ftxo
Or this amzn.to/48XA1A2
@@TunerwithKids awesome, thanks…..did you do a video on it? If not, I think a demonstration video would be a cool idea….
@patriot72 no video. Just screw it on with teflon.
How do you get the cover off. None of my screwdrivers fit?
It’s a torx bit.
Is there only 1 cap in that unit? Typically, there is a RUN one and a START one.
There's two. The start cap fits inside the original housing but the run cap is too big so I rigged it on.
So I have the same compressor and I think the run ambassador was already changed at some point I would like to know if you could give me the exact numbers like 45 UF 370 v AC is mine what are the numbers on stock pastor or can you send a link to the right ones
If you have same compressor, pull old ones to see what’s in there. I have links in description to the ones I used. FYI, I have a follow up video that figured out the issue. I put the wrong sized cap previously and phase balance was off when motor was running which runs hot and pops breaker.
If you keep the compressor in same spot connected to same out you might just want to add a new 20amp outlet with a new 10/2 w/ ground wire to a new 20 amp breaker. That will solve your issue much better and it will be easier on your compressor.
Not really if you have capacitor issues. A lot of people trip 20 amp when capacitor is bad and causes out of phase rotations.
I have had this thing trip so much, i ran a conduit stub off my main panel with either 10 or 12 gauge wiring and it still did it. I had added server fans to the compressor heatsink area, but i'll add one to the motor housing and replace the caps.
So year later. What exactly was the solution to your issue? Was it just the capacitor?
Mine is tripping circuit breaker before it fill the tank. And then it won't even start.
I had the wrong run cap, it threw off the phase balance and overheated. The cap needs to match existing uF rating. If your is tripping on start, you start cap is bad. Take both out and check the rating, order the ones in my links in description of its same size, else search P/N for replacement.
@@TunerwithKids Will do. Thanks for the update and information! Now just need to find some time to address mine.
What did you use to remove the 3 screws holding the cover ?
It's a torx bit. Need a skinny bit driver and the correct size torx.
Nice video, Binh! Also, did you ever happen to own a red Nissan 370z?
Nope. I’m a Lexus Toyota guy.
Binh, lol I just subsribed and watch your original video.. To clarify thats the start Capacitor right?
They one I replaced in this video is the run cap. I had wrong uF rating. It must match the original size. Usually 40UF, but YMMV.
run compressor?
Where did you get the capacitor at
Check links in description.
Hello Binh. Can you give the part number of the capacitor your replace in your video. Thanks.
Check links in description. Make sure yours is right size and match the uF.
I purchase used de same compressor rmodel in your video. At the time of purchase did not notice that the capacitor was missing. Thank you for your respond.@@TunerwithKids
@RicardoLopez-wf2ef the caps will vary slightly between models depending on the motor. But it should be same if not +\- 5uF.
Thank you!@@TunerwithKids
Question, after watching your video, I replaced both capacitors and it ran for a minute, I turned it off and then tried it again but keeps tripping the breakers again. I have tried multiple outlets so it would be running off a different breaker and even trips a 30 amp breaker. Any idea what would be causing this issue for me?
The new caps same rating as old ?
@@TunerwithKids Exactly the same. I watched a man show that the cover if not completely seated can keep the centrifical switch from engaging. So I made a bracket as he did to bolt it to the case but it is still tripping the breaker this morning after correcting that. Do you know if the motor has brushes inside?
@@chaplainlee sounds like something else that is either overheating or throwing the phase balance off. That’s main issue for tripping.
@@TunerwithKids My neighbor has the same compressor is about to buy a big compressor for his shop so I guess I will just get his motor and swap them. Surely that will fix it. Thanks for the help.
Check the check valve. If it is bad the compressor will start with little or no air in the tank but can't start when there is pressure in the tank, causing the compressor to lock and overamp which trips the breaker. To check for it, drain the tank and see if it starts and runs ok with 0# in the tank. Then try to start it with 100# in the tank. If it starts and runs when the tank is empty, but won't start with pressure in the tank, then there's a good chance it is the check valve stuck open.
Just wondering did compressor trip breaker again ?I have same one and it trip s breaker after it shuts off and try to refill again
Hasn’t tripped since I used the correct capacitor. It airs up all the way to 150PSI with no issues now.
Monkey arcade…I had same problem on old sears craftsman 33g 6H and the check valve/unloader valve; same part; was the issue. It wasn’t correcting the amount of air above pistons after tank would try to restart after being filled the first time 20 mins prior. The initial start was successful (tank was empty from last time I would of used & drained so no air above pistons to overload the amount of electric it would call for and kick the breaker like it was on second startup attempt) Easy to change this valve without getting into motor and cheap $20 part. This sounds to be your issue too
Badass☆☆☆☆☆
Where did you buy the capacitor?
Check links in description box of video.
Where did you find the right capacitor
Amazon.com check the description.
Your not clear about how to discharge capacitor what are you shorting to?
Touch the two pins with a metal object to short the cap and remove any potential energy.
Clean the carbon build up from the brushes, that are built up on the armature and commutator. That should help a lot.
I have the same compressor and didn’t use it for a year. Plugged it in and it won’t even start? What could be the issue?
Check the power connections. If it doesn’t do anything of click, might be the pressure switch seized. That’s a mechanical device with springs and might have corroded.
@@TunerwithKids it makes no noises other then the click of the red on/off lever when I move it. Like it’s not getting any power to it. Where it’s plugged in has power I checked it with something else. In the past this compressor would pop breakers either when it was filling with air or right when I flipped the red lever to turn it on. I’m a very handy person when it comes to working on car and most anything, but I’ve never been good at diagnosing electrical problems. Tempted to throw it out and just buy a new one.lol.
You main need to use a multimeter and check voltage. See if its getting passed the switch. If the start capacitor is done, it won't move when powered on.
@@TunerwithKids thanks for the input. I ended up selling it and buying a new compressor.
@@TunerwithKids If the start cap is shorted it will trip the breaker. If the cap is open, the motor will likely hum and you may see the fins oscillating as the motor tries to start but cant get the kick it needs. Eventually, if left like this it will trip the breaker also.