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I HAVE AN OILLESS MODEL # WL651300AJ runs good seams to build air but the air guages will not show what or how much air is in the tank

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Posted on Jan 02, 2017

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SOURCE: craftsman 3 gal ari compressor low presure

put a blower on the hose and see if air comes out
very possible there is a blockage in the hose or if you are using quick connects they may have failed

Posted on Apr 17, 2009

  • 54 Answers

SOURCE: bostitch pancake oilless gets pressure in the tank

Probably one of four things:
1. Bad quick disconnect fitting (though these usually fail open (leaking)
2. Bad Regulator (if equipped)
3. Check for a shutoff valve on that line (sometimes they are integrated into a plastic manifold, and may not look like a traditional valve)
4. If the unit is older, rust may have plugged up the piping - you may have to take it apart and clean it. (Depressurize first - there should be a drain **** to relieve the pressure)

Posted on Oct 22, 2009

Testimonial: "I appreciate your feedback. I'm pretty sure it is the regulator valve after futher messing around."

  • 332 Answers

SOURCE: craftsman pro mod# 919167770 , oilless air

Check to be sure your drain valve under the tank is turned completely off first

Posted on Mar 12, 2010

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Why will my bostitch pancake compressor 240 psi tank 180 regulator that the guages will not show building pressure

Hi, There are different posibilities. I would need more information. Was it always like that? Does the guage on the main tank and the guage on the regulator both not show more than 20psi? When the auto shut-off is triggered do you feel there is more than 20 psi in the tank?

Sep 15, 2014 | Stanley NEW Bostitch 2 HP 6 Gallon...

1 Answer

Oilless compressor cycling

Unhook the line to the tank and let the compressor run a while without building pressure. The piston rings need to run in. How is the oil level in the compressor?

Aug 26, 2013 | Campbell Hausfeld Air Tools & Compressors

1 Answer

Only builds up to 40psi

I am assuming you have check for line leaks, both on the compressor and your line out of the tank and the valve on the bottom of the tank is closed. This is usually a sign your valve plate is damaged, most likely a broken reed valve. If it's an oilless compressor it could be the wiper on the piston. Without knowing the model number all I can suggest is take the head plate off and check the valve plate. If all of the reeds are in place and not broken or cracked you'll have to check the piston.

Oct 28, 2010 | Campbell Hausfeld 5.0 Hp Cast Iron Air...

1 Answer


you're probably right, do you bleed the tank pressure after every use? This helps with the longevity. Could be leak in system, crack in head (these would be audible after cycle or turn off). Piston rings/seals- looks like an oilless unit- normal wear...

Oct 01, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Air won't come out of tank

does the guage show that it is building pressure? if not then the compressor is not working and its not pressurinsing the tank, if it is storing pressure and the compressor is working check the valve on the connector and that its depressing and releasing the air.

Jun 23, 2010 | Porter Cable C2002 150 Psi 6 Gal...

1 Answer

Craftsman pro mod# 919167770 , oilless air

Check to be sure your drain valve under the tank is turned completely off first

Mar 12, 2010 | Air Tools & Compressors

1 Answer

Chicago forge horizontal air compressor will not build

Here are some simple tests that will help solve your problem. Check for leaks with soapy water on all the joints and the drain valve. With compressor running and it has reached all the pressure it can muster, remove the air filter and place your finger over the intake port, you should feel good suction and the compressor should speed-up if pump is working and pressure is leaking out. If you feel good suction then pressure could be leaking past cylinder/ring if it is oilless. Check upper part of cylinder for scratches or torn vinyl ring. If you do not feel suction, but rather air blowing out of intake then you may have bad reed vales or torn gasket in head. Another simple test is to run compressor for a few minutes and disconnect power then listen for air leaks at the pressure switch unloader valve. If leaking replace the in-tank check valve (brass valve). Follow the discharge airline to the tank, there you will find the checkvalve. Good Luck and email if you have questions.

May 03, 2009 | Chicago Forge AF4HH 15 - Gal. 4.0 - HP...

1 Answer

Craftsman 3 gal ari compressor low presure

put a blower on the hose and see if air comes out
very possible there is a blockage in the hose or if you are using quick connects they may have failed

Apr 17, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Will a 1/3 hp compressor fire an 18 guage 5/8'-2" Finish nailer?

You compessor is ideal for a small spray gun however a pin nailer requires 80 to 100 psi and a small air storage thank to operate properly. The nailer may very well shoot a short nail into very soft wood at 30 psi, however there may not be enough pressure to push the piston back to top positon to load another nail and fire again. Good Luck

Jan 31, 2009 | Air Tools & Compressors

1 Answer

Craftsman 5 hp 30 Gal Won't build to more than 50/60 PSi

Most oilless compressors suffer from a short lifespan of the cylinder and piston ring. Unplug the unit and remove the cover to expose the cylinder and rod. Move piston to topmost position and examine the condition of the cylinder. If you see scratches or worn areas close to the top of the cyl. then most likely will need rebuild kit. (Not expensive) If cylinder looks good, remove the head and check the reed valves for debris or broken reed. Reed valve plate is also available as part with gaskets. To extend the life of an oilless compressor try not to use it in dusty or sandy areas as the bottom of the unit is open and tends to **** dirt into cylinder. Good Luck.

Dec 31, 2008 | Craftsman Air Tools & Compressors

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