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#1
11-06-2011, 09:58 PM
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Air Compressor Problem
Unless there is something screwy internally, I have no clues on this problem. As I said, it doesn't do it all the time, but when it does, I have move the flywheel, then it starts again. Any suggestions would be welcome. 
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#2
11-06-2011, 10:43 PM
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if it is the old speedair style... you probably have a gummed up unloader.... take a pic of the pump and post it so we can see....
__________________
. . Pay no attention to that man behind the curtain..  The more you Know, The Better you Know, How little you Know (old Estonian saying)
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#5
11-09-2011, 09:39 AM
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Air Compressor Problem
To answer your questions:
The compressor is wired for 220V plugged to the wall and the proper voltage is available. If I have to check the unloader, will it be accessible when the head is removed? I have taken engines apart, but not compressor heads. Last edited by NCMau; 11-09-2011 at 09:58 AM.
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#6
11-09-2011, 11:00 AM
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Sears-enstein 2HP
Right now you have NO Unloader!!! somebody removed it.... no wonder it overloads and locks up...
From what I can see..... you have what may have been a Craftsman compressor at one time.... looks like the tank might be original......but not much else.. What you now have is a Frankenstein Mfg Co. Special.... where the unloader tube would have been on the head of the original pump... somebody put an automotive style radiator petcock...(on a similar but replacement pump). the unloader tube WOULD have gone down to a combination pressure switch/unloader..... which is now long gone.... looks like some crafty devil found a home water pump pressure switch at the hardware store and wired that in (unfortunately it has no unloader feature) Here is a link to a similar (but 1hp Sears compressor) look for part #75 on the diagram http://www.searspartsdirect.com/part...&prst=&shdMod= and here is a link to the combination switch/unloader http://www.searspartsdirect.com/part...PRESSOR&blt=11 switch is $84... by the time you are done it will be well over $100 plus your time... is it worth it to you?? I have a similar 1hp Sears that will be dedicated to plasma cutter duty... that I can photograph and post if you want to see what the unloader/switch looks like installed...
__________________
. . Pay no attention to that man behind the curtain.. The more you Know, The Better you Know, How little you Know (old Estonian saying) Last edited by H80N; 11-09-2011 at 11:59 AM. Reason: clarity
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#7
11-09-2011, 11:57 AM
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unloader/switch
Here are a couple of pics to illustrate
#1 shows combination switch/unloader with tube coming down from compressor head. #2 Shows unloader tube coming off of the compressor head (small aluminum tube where yours has the petcock)
__________________
. . Pay no attention to that man behind the curtain.. The more you Know, The Better you Know, How little you Know (old Estonian saying) Last edited by H80N; 11-09-2011 at 12:08 PM.
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#8
11-10-2011, 08:17 AM
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Compressor Problem
Thanks for the info, H80N. I think the only Craftsman components of this compressor are the motor and the pump. When I bought it, it didn't have the a pressure switch, so I installed what I had in the shop, being ignorant about the unloader feature.
$100 for a Craftsman switch would not be worth for me to invest on this machine. I found couple reasonably priced combo units on bay. Do you have suggestions on the two? It looks like both of them would work. Again thanks for the help. http://www.ebay.com/itm/NEW-PRESSURE...ht_2102wt_1011 http://www.ebay.com/itm/Air-Compress...ht_2033wt_1011
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#9
11-10-2011, 09:20 AM
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Since they seem to be identical in all other respects, even price if you factor in shipping... I would go with the 4 port just for convenience sake... just in case you want to install a pressure guage or reg there with it.... , worst case you install some brass pipe plugs in the unused outlets...
"NEW PRESSURE CONTROL SWITCH VALVE FOR AIR COMPRESSOR 95-125 4PORT W/ UNLOADER L4" keep us posted...  Just as a side note... looks from your pics that this pump uses the heavy felt intake filter..... that is something that people usually neglect... they will clog and greatly reduce the capacity of the compressor.... it will work its heart out with lots of noise and heat but not produce much air.... they will get super clogged in a minute if they are around spray painting.(paint your car??)... Many people will take them out and replace with the oiled open cell foam that is used for lawnmower engines.... (hardware store or home center $3 cut to fit) Second side note.... make sure you have enough clean oil in the pump... You would be amazed at how many people never even check it, let alone change it (I run Mobil1 Synthetic, with good results... others may disagree)
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. . Pay no attention to that man behind the curtain.. The more you Know, The Better you Know, How little you Know (old Estonian saying) Last edited by H80N; 11-10-2011 at 11:07 AM. Reason: addl info
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