How to set the pressure switch on your Harbor Freight air compressor

[bagofnailsbon]

Thanks for this video. I have the same exact model and just used your instructions. Yesterday I was trying to free a lower strut bolt on the back of my cr-v. I looked at the compressor after it finished cycling and both the tank and the tool were at 90! Now, the tank is around 115. I'm playing with the tool pressure, but I'm trying not to be dumb and hurt my tools. Is anything above 90 bad for tools? (impact wrenches, cut-off wheels, etc.) Or can they handle 100 or higher? Thanks again!

[gomezsandy]

so I slowly turn that screw clockwise to increase the upper limit of the pressure and also increasing the cutoff limit. Mine cuts off at 75 or lower and at 100 psi so it seems like ii is always running.

[IMADABCI]

Excellent video, thanks! Is there any way to set the cut on pressure without affecting the cut off pressure?

[cutiepie12205]

do you know how to put the pressure switch together please we need help make a video of how to put it together

[MrNjl007]

Hi, I found this video very informative, however I have a pancake compressor from Harbor Freight that has a slightly different pressure switch housing. It has a red on off switch on top of the pressure switch. How do I remove the cover and set the lower (kick in ) limit?

The manual from Central Pneumatic for my model #95499 does not show how to take the cover off the pressure switch.

[dollman0]

@MrNjl007 I have one of these pancake compressors and I will see what I can do about making a video... You may consider replacing the pressure switch with a better quality unit since most HF compressors seem to have a problem with the check valve and the pressure switch.

[stymye]

did you tell people that this will void the warranty...?it says so in the instruction book

[dollman0]

@stymye You have two choices, return the compressor several times until you get a compressor that is properly set, or set the pressure to the level specified by the manufacturer.

[struebel232]

You are dead On Man! Thanks for the Great Information... And Saftey 1st always!!! No-one could have done this better! I have Had to do the same to Mine, Also Swaped For a Longer And Thicker Power Supply Line As My 8 gallon cord was Cut... But You Did a Wonderful Job On Everything! Always Like Said Take Baby Steps In Adjusting Pressures.

[JDMGUYTA22]

This video is great, as I am getting serious with air compressors, this is very helpful tip for novice folks like my self who doesnt know much about compressor setting.

[voweeks]

i have the 67847 unit. i got it part of a close out this winter. some times when i go to start it up while it already has pressure in the take it bogs done and trips the braker withing 5 seconds. if i drain out all the ari and flip the toggle switch a few times it will "warm up" and run great. any idea what is causinbg this. i havent changed the oil yet. i will get some 5w30 for it.

[dollman0]

@voweeks If you use 5w30 oil, make sure it is mobil-1 or a quality synthetic.

[jster1963]

THANK YOU SOOOO MUCH!!!! I have the exact same compressor and my pressure was exactly like yours. I was able to set the new pressure in about 1 minute thanks to your vid! Also, you reminded me to change my oil. I didn't realize I should have done a break in, but I sure will next time. Thanks again......jster

[TOBORE8THMAN]

Thank you. I think you did a fine job with this review.

[hendu3270]

Another great video dollman0! After reading many of the reviews on the HF site for this compressor, it sounds like quite a few of those guys would have benefitted from this video.

[dollman0]

@hendu3270 I tried to show you exactly how to do it safely and go in small steps until you get the desired pressure. If this pressure switch gives you any trouble, replace it with a better quality switch, it is somewhat universal. Remember, the safety valve is rated at 125 PSI and you can buy a new one in any PSI rating (10% higher than max PSI)... Its cheap manufacturing, you can expect some defects. Once I set the pressure up, it works a lot better.

[ncrdisabled]

thanks for the great video now I can adjust mine to T120 max and 85 cut in .

[dollman0]

@ncrdisabled You can also buy a new safety plug with a higher rating if it gives you any trouble. The valve on my pancake compressor is 130 PSI, the guidelines is 10% higher than your air pressure or 15 PSI, whichever is greater. One of the reviews on a portable air tank said the blow-off valve gave them some problems and it was removed, NEVER REMOVE the SAFETY VALVE but get a higher pressure if neccasary.