Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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Compressor turns on but no air in tank. Oil level is ok air filter is brand new. Craftsman 3 gal. Air compressor, model #921.153101

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Dismentl the valve plate check the gaskets and the valves,cif not good change and it wlii be ok

Posted on Oct 10, 2009

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Posted on Jan 02, 2017

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Craftsman Air Comp. 6 hp oil-less, 33 gal horz. tank - sounds really loud


Sources of noise from craftsman oil free compressors (could be Made by Campbell Hausfeld or Porter Cable) include loose fan, failing bearing/s on the piston rod and housing, failing seal ring on piston, air filter intake and loose motor mounts. With the housing cover off, check the fan blade for cracks or loose screw. Turn motor by hand till the piston is at top of stroke. Examine the cylinder for scratches close to top. If scratched, air is leaking past vinyl ring making noise and causing longer fill time. If everything looks ok, suspect noise coming from bearings. Hard to tell if bearings are failing by looking at them. I have seen many failures of the piston bearing on the crank (fairly easy to change, I use alternator bearing from auto parts ) , however, the bearing in the housing just behind the crank bearing is much harder to replacable. Good luck with your fix-it project.

Jun 11, 2012 | Craftsman Air Tools & Compressors

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Craftsman Air Comp. 6 hp oil-less, 33 gal horz. tank - sounds really loud


Some of the craftsmen compressors have pistons that are coated on the top of the dome. Once the coating wears off, they have severe loud piston slap. If you continue to run it the way it is, it will snap the connecting rod in half or break the piston and possibly the cylinder.

Sep 21, 2017 | Craftsman 33 gal Air Compressor 6 hp...

1 Answer

What level should the oil be in the view sight and what type of oil should be used to fill if needed?


Your oil level should be right in the middl of the sight glass as per the type of oil I'm sure Craftsman has there brand of oil they suggest. But any good quality compressor oil will work.

Jun 25, 2011 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

What type of oil is needed in my Durabuilt air compressor-6 gallon tank? I need to replace some oil. Thanx. Send response to "gfrommell@wi.rr.com." Thanx.


Howdy. It's actually called Compressor Oil and is available at nearly all hardware stores and tool rental agencies. There are several brands and they are all comparable. I use Senco, but Campbell Hausfield is also good. Farmerbear at FixYa.com

Oct 23, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

4 Answers

What type of oil does this unit take?


Air compressor oil. I prefer synthetic, but you can use regular compressor oil also.

Jun 26, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Electric motor works fine, you smell the belt burning because compressor unit turns over with much resistance, it has full oil level


It could have dirty/faulty check valves. Drain all of the air out and see if it is still hard to turn. If it is easy then, your check valves are letting pressure from the tank back into the compressor, putting it under excessive load. Clean/replace them as necessary.

Dec 01, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Compressor will not pressurize


A simple check to see of the compressor is pumping is to remove the intake air filter and feel for suction. If the pump is working properly you will feel suction at the intake and the compressor will unload (speed up) when you restrict the opening. If no suction remove the head and valve plate and check the piston and reed valves for damage. Replace parts as needed. Parts are not expensive for small compressors. Good luck, enjoy.

Dec 19, 2008 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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