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Sears Craftsman 919.167312 Leaking Air

I have a Sears Craftsman 919.167312 My air compressor will not hold air. It leaks out of the bottom valve screw. I am thinking the screw is just worn out. I used to be able to seal air flow with only hand tight twists. Now I need vise grips and I have to turn and turn and turn. It is listed as #24 on the parts schematic.. I am thinking I not only need to replace the screw (which I'm sure is bad) but I also need to replace the part it screws into... But I do not see that listed..?? Opinion?

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Http://www.searspartsdirect.com/model-number/919167312/0247/0703000.html Model 919167312 CRAFTSMAN AIR COMPRESSOR Parts . It is part 24 or 24a. The female threaded fitting is part of tank. Take the drain valve to a machine shop and have them tell what is the size and tpi. Have the chase the tank female fitting. I f don't want to that once you diameter and tpi you can buy a tape and chase it yourself. Word of warning if you start the tap crooked you will cut new threads and the tank is worthless. I wouuld pay the machine shop and be satisfied.

Posted on May 29, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Oil capacity for craftsman air compressor circa 1978 model #106..

I have a 2hp craftsman air compessor with a two cylinder pump, Here is the info from my manual as far as oil capacitity:

Remove oil fill plug and slowly add
a compressor oil until it is even with the
top of the oil fill hole. NOTE: Do not
allow oil to be lower than 3/8"
from the top at any time. When filling
the crankcase, the oil flows very slowly
into the pump. If the oil is added too
quickly, it will overflow and appear to
be full. NOTE: Crankcase oil capacity is
approximately 16 fluid ounces.

I buy my compessor oil from Lowes in the tool department. It comes in 16oz and sells for about $3. I wouldnt worry about how many ounces it holds but rather that the oil level is to top of filler hole. Lowes also sells a synthetic oil for about $7 and is recommended for severe conditions (hot / cold / used all day). Good Luck!

Posted on Apr 26, 2009

  • 2976 Answers

SOURCE: My rotary screw air compressor model SSREP100H

It's just too hot. Blow out the radiator weekly. There is an oil temp switch that might need replaced but the radiator is the most common problem with screw compressors. You can check the settings in the control panel, where you turn it on and off. It should be set for a high temp of 185°.

Posted on Aug 08, 2009

  • 1 Answer

SOURCE: the check valve is leaking on my stanley bostitch

i have a bostitch air compressor.its about 2 yr old. i havent used it much. just all of a sudden it quit pumping air. tha motor run but will not fill with air.

Posted on May 29, 2010

  • 21 Answers

SOURCE: Compressor is bleeding air from the drain valve

remove the drain plug. go to any auto parts store and tell them you need a drain ****.put it in and that should solve your problem. cost should be 2-3 dollars.

Posted on Jul 04, 2010

  • 18 Answers

SOURCE: 25 gal horizontal craftsman air compressor is leak...

Unloader valve probably needs to be adjusted. Should be two jam nuts holding the unloader to the pressure switch. Loosen the jam nuts and adjust the unloader slightly away from the lever. Tighten the jam nuts and try it again.

Posted on Jul 10, 2010

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Why won't it pump up past 40#?


If you don't have any air leaks, the cylinder head gasket is probably bad on the pump. Easy fix for less than $10. you can get the parts you need here:
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Most likely it is a leaking valve. If ether the intake or exhaust valve, but not both, leak back pressure will be low. These small compressors usually use reed valves. Try and remove the head, and check that the reeds are not bent up, and that the seat it seals against is not cut. If the reads are bent you can sometimes flip them over. You may be able to get new reads from Sears if they are bent or broken.

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If the unit does not unload properly the motor will have difficulty starting. Make sure that the intank check valve is not leaking air back out of tank (with pressure in tank, remove hose from compressor at tank checkvalve and spray soapy water). Replace as needed if leaking or try to repair. If the valve is not leaking then issue my be unloader valve at the pressure switch. Follow small airline from checkvalve to pressure switch. Small valve stem at the pressure switch should release air in line when pressure switch cuts off. Listen for small amount of air to be released when unit shuts off, if air continues to leak out, then check valve is leaking. Replace with generic parts making sure of fitting size. Good luck

Mar 08, 2011 | Craftsman Air Tools & Compressors

1 Answer

I have an 80 gal Craftsman air compressor who just shut down, the pressure is dropping, it made a smoke smell and it blew my circuit breaker. I tried starting my circuit breaker but it kept flipping off....


Usually related to the in-tank check valve. Follow the discharge hose from the pump to the tank. At the tank the hose attaches to a brass valve (or metal valve). This brass fitting is the check valve. It's purpose is to hold air in the tank and not allow the air to load the compressor when motor is trying to start. Easy to test. Use another compressor to pump air into your tank thru the quick disconnect or remove the safety valve and install hose there. Pump in about 75 psi and looks for leaks with soapy water. Remove air inlet hose from check valve and check for air leaks. If leaking, replace with generic valve available at www.grainger.com or order from sears parts. If no leaks then suspect unloader is not working at the pressure switch. If both the unloader and check valve is ok then test capacitor for reading within 95% of rated valve. Good holidays

Dec 14, 2010 | Craftsman Air Tools & Compressors

1 Answer

What causes air to leak back down when air compressor is off i put a new craftsman pressure valve on it & still the same problem


Hi, my name is John. Welcome to FixYa. Kat, you have air leaking in the lines or switch, check for leaks from the pump to the tank, check the bleed valve at the bottom of tank. Thanks for choosing FixYa...John

Nov 25, 2010 | Craftsman Air Tools & Compressors

1 Answer

25 gal horizontal craftsman air compressor is leaking at the pressure control valve. Can I replace the valve or repair it?


Unloader valve probably needs to be adjusted. Should be two jam nuts holding the unloader to the pressure switch. Loosen the jam nuts and adjust the unloader slightly away from the lever. Tighten the jam nuts and try it again.

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Craftsman 1/3 hp compressor leaking oil


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

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AIR LEAK ON CRAFTSMAN AIR COMPRESSOR, 3HP,25 GAL, HORIZ TANK


The needle valve that you see is the unloader which releases air pressure from the discharge line after set pressure is obtained. If air continues to leak after the compressor shuts off, the check valve installed in the tank is leaking air out of the tank. Follow the air discharge line from the compressor to the tank. There you will find a brass valve which is the check valve. Simple test is to remove the smaller airline (1/4") from the brass valve and check for air leaking. If leaking remove brass valve and check for debris under the white seat. If you cannot clean the valve, replace with generic check valve from www.grainger.com. It will cost less than factory part. Just order the valve considering the fitting sizes that you need. For exact replacement,( www.sears.com parts). If you sears model # begins with WL then your compressor is made by campbell hausfeld and parts may be ordered from www.chpower.com. Good Luck with you repair and email if you have more questions.

Mar 21, 2009 | Craftsman Air Tools & Compressors

2 Answers

Leaking Pressure Switch


Leaks at the pressure switch are usually associated with the unloader valve due to leaking checkvalve at the tank. To determine the faulty part requires a couple of tests. Run compressor till it shuts off and is full of air then unplug the unit. Spray soapy water or (windex) around the base of the pressure switch to find where air is leaking from. There is a rubber diaphragm incorporated into the base of the pressure switch that may develop leaks. If the base is leaking check for loose parts or screws. If the air is leaking from a valve that looks like a tire stem, then leak is a result of faulty check valve in tank. Follow the 1/4 tubing that is connected to the pressure switch down to the brass valve at the tank. This brass valve is not holding tank pressure causing leak at the pressure switch. Replace as neccessary. The pressure switch is expensive. Do not replace unless you have looked at checkvalve. A universal pressue switch can be and should be used to same money. The check valve need not be replaced with exact replacement. Universal parts are available at www.grainger.com . Just match tubing and thread sizes and pressure range for the switch. Good Luck on your project and email if you have more questions. Please wait for the soapy water or windex to dry before you plug in the unit.

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