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Have a mastercraft 10gal.. model 1110(Np475). Looking for reed valve & intake reed valve with gaskets.. loses air pressure only goes up to 2 1/2 gal.

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Posted on Jan 02, 2017

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SOURCE: coleman compressor no build up of pressure

Parts for coleman are available at your compressor is listed as L0502710. If however you like to tinker, you can make a pretty good reed valve out of aluminum can material or other (any ideas?). It is fairly easy to cut, does not last as long as factory stainless steel, but for short term, why not? Good Luck

Posted on Jan 10, 2009

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SOURCE: Craftsman 7 gal compressor. pressure builds to

Maybe the non return vale is stuck or damaged.

Posted on Jun 06, 2010

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SOURCE: I have a Craftsman compressor

you must have wired the new pressure switch incorrectly .when the pressure switch opens it will release the head pressure so your compressor must be running with the pressure switch contacts open should be 4 connections 2 marked motor which is from your compressor and 2 marked line which is your power coming in

Posted on Jun 15, 2011

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My compressor is not buildngup air pessure

Most compressors that come into the shop are not reaching cut off pressure. Here are a few tips on determining the problem /s. Three problem areas. Leaks,valves/head gaskets or worn cylinder/rings. Leaks on small compressors are easy to find by spraying soapy water on all connections and drain valves. Also spray on head gaskets. Repair as needed. No joy? Continue with checking valves. Most small compressors have reeds for valves and fail quite easily. There should be good suction at intake opening. Run compressor till no more gain in pressure. With air filter removed and pump running feel for suction at intake. If you feel very little suction or air blowing out of intake , most likely bad reeds or gaskets. If you feel good suction however no gain in pressure then likely worn cylinder. Good luck with repair.

Feb 03, 2017 | Air Tools & Compressors

1 Answer

I took top of compressor off and the 2 plates that have 2 small brass plates that seem to fit into a groove on the 2 plates but cant seem to figure the correct assembly for the plates and brass plates.

The link below is not exactly like your compressor but will give you an idea of how heads are assembled. If gaskets need replacing try making them out of automotive gasket material or use the metal from aluminum soda/beer can. If you need to replace a reed valve, make it out of feeler gauge material. The reed valve needs a little wiggle room to work, try to use gasket material of same thickness. There are two chambers in the head (upper most part), one chamber is intake the other is exhaust. The intake valve is usually slightly cleaner looking than exhaust valve (exhaust valve gets hotter, looks burned) and exhaust chamber in the head is usually darker sometimes oily. Intake reed is closer to piston. Exhaust reed is closer to top of the head.

Oct 31, 2011 | Northstar Air Compressor Pump - 5 HP, 15.9...

1 Answer

Hitachi Ec 119 compressor will not build pressure beyond 25 pounds; no air is heard leaking after I power down the machine. Is it likely the check valve or pressure switch?

If your compressor keeps running and only builds to 25psi, I would suspect the reed valves, head gaskets or a leak. With the compressor running spray soapy water on all fittings, around the head area and tank components. If no leak is found, remove the air filter and feel for suction at the intake(make sure head is not too hot). If you feel good suction at first then suction is lost after reaching 25 psi, most likely reeds or gaskets (with bad reed valves, sometimes you will actually feel air blowing out of the intake). Good luck

Oct 15, 2011 | Hitachi EC119SA Twin-Stack Air Compressor...

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Compressor squeaks as pressure begins to build. Not from belt. Does not squeak when no pressure in tank.

Air leaking back from tank check valve or leaking reed valves can make a squeaking or vibrating noise. With pressure in tank remove fitting at the tank check valve and test for leak with soapy water. If leaking, replace with generic valve. If no leak, reinstall fitting and let all the air out of the tank. With empty tank and air filter removed, start compressor and feel strength of suction at intake. When you hear the squeak retest strength of suction at intake and compare. If reed valves are leaking, you will feel less suction as tank pressure increases, and in severe leaking valves, you will actually feel air blowing out of intake. Repair/replace reeds and /or leaking gaskets in head of compressor. Good luck

Mar 08, 2011 | Ingersoll Rand IngersollRand SS3F2GM...

1 Answer

My compressor won't build pressure over 90lbs

Small leak will prevent the unit from building proper pressure. Check all connections with soapy water and repair as needed (including under cover). If no leaks are found check cylinder for scratches. Push piston to top of stroke and check walls for fine scratches. If scratched, pressure is leaking past vinyl piston ring. If no scratches or leaks, most likely reed valves, head gasket or combination of both. Easy test, with compressor running and attained 90 lbs, place finger over air intake and check for good suction (carefull could be hot) . If good suction, then air is leaking somewhere, of no suction suspect reed valves/worn cylinder, if air seems to be blowing out of intake, suspect reeds /gaskets. Good holidays

Dec 13, 2010 | Stanley FactoryReconditioned Bostitch...

1 Answer

Air compressor pumps to 25 pis thats it

I would say that you have a broken valve in the cylinder head, drain what pressure you have in it, with it unhooked and remove the cylinder head. there are reed type valve on a plate, the valves on the intake side open towards the cylinder and the discharge valves open towards the head. look for broken reeds or hung open with crud. also look to see if the gaskets are blown between intake and discharge side of the head, also if head gasket is intact between cylinder bores. These are the likely problems with these pumps, hope this helps!

Dec 18, 2009 | Campbell Hausfeld 26 - Gallon Air...

1 Answer

3gal craftsman horizontal compressor wont build pressure

Without knowing specifics of your unit, If there are three reeds, then two are probably for intake and one for exhaust. Intake reeds should be on the piston side of the valve plate, discharge reed should be on the head side.

There should be a divider in the head side to separate the inlet from the discharge. Make sure the valve plate is turned so that the air from the air filter side goes to the side with the intake valves, and the air from the discharge valve should go to the side with the pipe to the tank.

Oct 21, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

2 Answers

I have a craftsman 1hp 4 gal compresor. It's not building pressure and air is pumping out of the air filter not in???

sounds like reed valves are bad,sometimes you can take the reed valves and flip them over for short fix,best to put new one in unit.

Jun 27, 2009 | Craftsman 1 Hp, 4 Gal. Air Compressor

1 Answer

Dewalt compressor not filling with air drained tank closed valve

Some dewalt air compressors with single cylinder are known to develop trouble with reed valves and /or failed gaskets in head. Parts lists and parts are available at Simple test is to remove air filter and check for suction at intake. Bad reeds will tend to blow air out intake as pressure increases. Failed gaskets in head will cause very high temp at discharge hose. Parts are not too expensive. Enjoy

Dec 05, 2008 | Dewalt Heavy Duty 2 Brad Nailer Compressor...

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