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21 gal vertical Model 94667 will not fill tank.

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  • Brad Alvey
    Brad Alvey Oct 16, 2013

    It will only build up to 20 lbs then just keeps running without a pressure increase. I think it might be the intake valve. Where can I get the valve/gasket assy?

  • Brad Alvey
    Brad Alvey Oct 16, 2013

    I mean the part numbers. This is a Central Pneumatic from Harbor Freight, who is no help.

  • Brad Alvey
    Brad Alvey Jan 29, 2014

    It turned out to be the reed plate. I replaces it and everything works just right. Thanks guys for your ideas and help.



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Could be piston rings too. Have you looked here?

Posted on Jan 29, 2014


4 Suggested Answers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Ingersoll rand compressor oil leak (Model DD2T2, 4.5 Gal.)

The brass fitting that goes into my DD2T2 seems to have a hole in it and it looks impossible to remove without ruining a major gasket due to the close tolerance in replacing the fitting. Am I missing something?

Posted on Sep 15, 2009

  • 18 Answers

SOURCE: Craftsman 1 HP 8 gal vertical compressor.919

Sounds like the unloader valve is not working properly. The unloader typically is at the end of a tube going to the pressure switch. The unloader is tripped when the pressure switch cuts off. The purpose of the unloader is to bleed the pressure from the cylinder when the compressor cuts off so the next time the compressor cuts on it will be starting in an unloaded condition.
when the compressor cuts off you should hear a discharge of air for about 3 to 5 seconds if the switch is working properly. The unloader can be adjusted if necessary by loosening the jam nuts and adjusting the unloader towards the lever on the pressure switch.

Posted on Jul 10, 2010

  • 28 Answers

SOURCE: i have an ingersoll rand

I'm not sure but I operate my'n at about a 145/150 top and about 110/120 min.
However others my have a differant perspective


Posted on Jul 09, 2011

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Hi I have model 94667 21 gal the pressure is at max,will not go past 60 psi & if I set it 60 the compressive will not stop running but it will hold pressure no leaks.can you help. Thanks Jay

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