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

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Pressure loss wil only produce 20lbs of pressure reguardles of adjustment

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Does the tank have a serious air leak? If it looks like it is centered around the compressor, remove the cylinder head. Check and clean the intake and outlet valves. Check the safety valve on the tank that it is not leaking. Listen everywhere for a hiss while it is running. Make sure the belt isn't slipping.

Posted on Jul 16, 2009


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Posted on Jan 02, 2017


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To start, take the vehicle to a dealer and ask them to screw an oil pressure gauge into the block hole and check your oil pressure whilst idling and while driving it.
I have a 1993 and it does the same thing, but the problem is only the gauge itself.
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Myers pump will not pump up past 20lbs on an artisian well system.

Hi susan_nash

Be sure your pump is not "air bound"...meaning that air is in the pump not causing it to prime properly and that will cause it not to build up pressure and keep running.
Prime your pump properly and that should solve your problem
Please rate me

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1 Answer

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My suburban seems to burn way to rich to the point you can smell it in the exhaust. and runs rough. is there an ajustment on it like to older carbs had? GREG

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1 Answer

Compressor tamk pressure

That small piece of rubber came from the compressor pump, more than likely you have a broken valve or blown head gasket in the pump, that is why it will not build pressure.

Feb 02, 2010 | Craftsman Air Tools & Compressors

1 Answer

Oil pressur drops a little when coming to a stop

This is natural as long as it does not drop too low. No less than 20lbs/in. Oil pressure increases with RPM's. That's why we have the guages! Hope this helps your concern.

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Compressor will run but wont build more than 20lbs of air


Jun 20, 2009 | Air Tools & Compressors

1 Answer

Adjusting air flow on gas kitchen stove burners?

Proper air velocity over the burner is critical on a direct fired gas unit. If the air velocity is not within
specifications, the unit will not operate efficiently, can produce excess carbon monoxide (CO) or other gases, and may have sporadic shutdowns. Proper air velocity is determined by measuring the static pressure drop across the burner.
To measure the static pressure drop, the fan should be running and be discharging 70° air. Using an incline manometer or equivalent, insert one sensor into the entering air access opening (plugged test port) and the other on the downstream side, through the view port (see page 12 for locations). The proper static pressure reading should be from .625 in. to .675 in.
If this reading is higher or lower and the air quantity (cfm) delivered to the building is acceptable, then the burner baffles will need to be adjusted (see diagram).
Open the burner access door. Using a wrench loosen the 4 screws to adjust the baffles. To increase the static pressure loss, decrease the opening size and to decrease the loss, increase the opening size. The top and bottom baffles should be of equal distance from the burner. Tighten the baffle fasteners, replace the door, turn unit on, and recheck the loss. This process may need to be repeated
until the proper pressure reading is attained.
This adjustment will change the air quantity delivered by the unit and therefore should be rechecked.

Sep 05, 2008 | Maytag Kitchen Ranges

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