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My 8 gal. Jomate air compressor came with an impact wrench tool kit, never had a chance to usw them because of not enough pressure, not it doesn't even want to pump my tires more than 25 psi. I tried to return it but no papers, so I'm stuck with not enough pressure for any thing, any ideas, it 2 yrs old and only used for my tires, any ideas?

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I would make sure you have the air pressure regulator fully opened but other than that these are not good compressors and would not recommend anyone to purchase these as i have also made the mistake of owning one and coleman does not stand by there product.
if helpful please rate 4 thumbs.

Posted on Dec 31, 2010

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Will 3.8cfm @90lb pressure air compressure 10 gallon 125psi work with impact wrench at average air consumption 8cfm


Air tools demand volumes of air; a 10 gallon is good for something like a finish nailer, or staple gun, or even a nail gun.
It will run the impact wrench, just not for very long, like 10 to 12 seconds if you're lucky.
Most compressors tell you what types of tools they are made for.
And impact gun is best matched with a 21 - 26 gallon compressor.

Nov 03, 2015 | Air Tools & Compressors

1 Answer

Crankshaft pulley r/r


Place the crankshaft pulley bolt removal tool over the end of the crankshaft bolt. Tool will hold the pulley in place while you apply torque to the bolt with an impact wrench. Start the air compressor by plugging it in and turn it on. Set the pressure of the compressor on the highest setting. Attach air hose on the air compressor to the air inlet and the locking mechanism using the quick-connect lock on the end of the air compressor hose. Set the impact wrench to turn counterclockwise. Spray the crankshaft bolt with penetrating oil. Make sure you soak the bolt head in oil so that it is easier for the wrench to remove. Secure the socket end of the wrench to the pulley bolt and pull the trigger on the impact wrench. You might need to reapply penetrating oil several times during this process to loosen the bolt up. Eventually, the bolt will come off 215 lbs torque, and simply stated righty tighty, lefty loosy. Hope this will assist you.

Dec 19, 2011 | 1991 Honda Accord

1 Answer

I have an old craftsman impact gun model number 875-188992. what size compressor do I need for taking off lug nuts/automotive work?


The two most important specs are CFM at 90 psi (that's how fast the compressor can compress more air when the tank starts to run low) and how big the tank is. Virtually any compressor that has a top pressure rating 20 psi higher than you need for your tool (which is usually about 90 psi) and that has a tank of a couple of gallons will work. But the smaller the tank, the shorter time you can operate the tool before the compressor has to kick in. And the lower the CFM at 90, the longer you will have to wait for the tank to come up to pressure again so you can operate the tool at full pressure. If this is for occasional use and you aren't in a hurry, you don't need much of a compressor at all. If you want to operate continuously, then you should get something with a CFM at 90 psi that is higher than your tool's CFM consumption. Keep in mind that impact wrenches don't operate continuously like paint sprayers do. Good luck. Vote if you found this helpful. Al K

Jun 07, 2011 | Air Tools & Compressors

1 Answer

Is there a special procedure for removing the harmonic balancer? i've tried several times using different methods to no avail. is the main bolt reverse threaded? tools used so far are a breaker bar, a...


The retaining bolt comes off in counter clockwise turn, they most likely used lock tight when it was installed and it is installed at probably 1200 lbs torque. the 21 gal compressor most likely doesn't have the power needed to remove that bolt. Once the bolt is removed you need the special tool to remove that balancer, it is a 3 leg pulley puller with a center insert that sits in the same hole that bolt comes out of and the pulley puller applies pressure to that insert while pulling the pulley off.

Mar 19, 2011 | 1994 Isuzu Rodeo

1 Answer

Im going to buy a compressor ! What is the min scfm comp that will run this tool for small jobs on my car?


Hi and welcome to FixYa, I am Kelly.

Air Tool consumptions are based on 15 seconds per minute (25%) of tool use.

Usage rates refer to the total time that air is flowing through the tool. If your applications result in more extensive usage, calculate air tool requirements as

follows.


(25%) 15 seconds = rated scfm x 1

(50%) 30 seconds = rated scfm x 2

(75%) 45 seconds = rated scfm x 3
(100%) 60 seconds = rated scfm x 4

Your impact wrench is rated a 8 CFM Cubic Feet Per Minute Usage

SCFM is Standard Cubic Feet per Minute (pre-compressed air volume)

I would be more concerned that the plumbing from the compressor tank could support the 8 CFM required by the 1/2" Impact. Remember the Air compressor will recover the pressure loss regardless of size. The only problem your going to have for "small jobs" is if you use too small of an air line to supply the impact wrench you are not going to get the full torque that it will produce to the drive head. In other words... a 1/4" supply line or 1/4 fittings anywhere in the system just isn't going to cut it even at 120 PSI. If you have the patience... a 5 gallon tank compressor that has the output volume required should be all that you need. I have been a mechanic over 4 decades and rarely have to use a 1/2 in impact for very long. Examples of 1/2" vs 3/8" useage. Wheel nuts, crankshaft pulley center bolt, some starters, steering, suspension and rear end parts. Other than that a 3/8" Impact works great.

One other thing you can do if you have an Air-Peen portable tank (with added fittings) is to add that in line with your output hose when your using the impact wrench so that you have longer use times.

I know this does not answer your what SCFM compressor is required question but it will resolve your needs. I just can't see telling someone that is a "small jobs" user to buy a larger compressor when really all they need is more volume for a brief period of time. The re-plumbed 1/2 inch output / in-line Air-Peen tank is a much cheaper and reasonable work around and you can disconnect that tank when your not using the impact wrench.
Lastly... if your inpact wrench has a SMALL male air fitting everything above will be a waste of time. You have to get that volume into the tool without restriction so that the rool will work properly for you.

Thanks for choosing FixYa.
Kelly

Mar 09, 2011 | DeVilbiss Excell ET501 12" Impact Wrench

1 Answer

Craftsman air compressor 2 hp 20 gallon, seems to running o.k. builds up to 100lbs shuts off when it hits 80lbs come back on, but when i run a tool , right around 90lbs the tool dies out and runs week.when...


IT depends on the tool. Some tools require higher cfm. (cubic feet per minute) of air. IF your air line is not large enough, then sometimes 90psi is not enough to operate a tool as there is a pressure drop at the tool. Look at the required cfm for each tool. Find a chart for air line size, cfm and pressure. Most impact wrenches should be used on a minimum 3/8" air hose. You could look at your manual and see what the max pressure is on your compressor. You may be able to decrease the differential pressure e.g off and 100 and on at 90, but then the compressor will cycle more frequently, and may exceed the duty rating of the compressor.

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Hi, The socket adapter spins before i engage trigger


The seal is bad inside leaking air pressure to the gun without squeezing the triger. Get a reseal kit from Sears

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1 Answer

Craftsman compressor is weak


You probably have a restriction in the regulator. You may be able to disassemble and clean it but you'll have to relieve the tank.

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1 Answer

Wrench Problem


* Proper match between air compressor and tool ratings. * Correct fittings that match the tool and air hose. * Well-maintained air compressor and air hose. * Correct air pressure adjustment for the tool being used.

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1 Answer

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* Proper match between air compressor and tool ratings. * Correct fittings that match the tool and air hose. * Well-maintained air compressor and air hose. * Correct air pressure adjustment for the tool being used.

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