106.153784 Craftsman Sears twin cylinder squeaks then shuts off?

by Daniel Gomez
(CA)

106.153784 Craftsman Sears twin cylinder compressor

106.153784 Craftsman Sears twin cylinder compressor

106.153784 Craftsman Sears twin cylinder compressor
106.153784 Craftsman Sears twin cylinder compressor

Model # 106.153784 sears compressor oil driven will power on for about a minute pressure only reaches 30psi compressor rated at 150psi.


After a minute I hear a loud squeaking sound coming from the flywheel/pump area then it just stops while squeaking.
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Daniel... check the belt tension and alignment first please. That may not be the problem, but lets eliminate that as the source.

What I surmise from your post is that as the pressure in the tank builds, the pump has to work harder to get air into the tank. As a result, the motor has to work harder too.

If the pump bogs down to the point where the motor cannot cycle it, the motor will overheat and go off on safety.

With the tank empty, remove, inspect / clean the tank check valve. Again, this may not be the cause of the issue, but lets get it out of the way.

Assuming that it is not the motor that is squeaking, that suggesting that the motor itself is the problem, I am guessing that you may have a valve problem in the pump, that's backloading the pump and overloading the motor.

If you run the compressor with the line from the pump head off, I suspect it will run with no issues, right?

After you put the line back on, pull the pump intake filter and feel if air is being pulled in strongly as the compressor runs.

If so, that would suggest that the issue is the high pressure valve, and that means a pump teardown and valve replacement.

Bill

Comments for 106.153784 Craftsman Sears twin cylinder squeaks then shuts off?

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Aug 23, 2014
Oldy but goody
by: Bill

If the fill time is extending a bit, I would suspect that you've got a gasket letting go when the tank pressure gets up near cut out.

Aug 22, 2014
Oldy but goody
by: Anonymous

I have this same compressor. When it pumps up now it gets real loud just before it shuts off. I think I've had it about maybe 25 years & was thinking it may be pump worn out. I was keeping oil at the bottom of oil fill ring and thinking I should have been at the top.

Dec 08, 2012
it was the belt tension
by: Anonymous

It ended being the belt tension. I unbolted the motor and slid it as far to the side as possible, making the belt tighter. Thanks for taking the time to help me. God bless.
___________________
You are welcome.

B.

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bleeder valve air compressor 921.16472 not working

by Josh
(Mcpherson KS USA)

have replaced bleeder valve, and the little pin on the bleeder valve stays open(condensed) not allowing the tank to fill. Air still leaks. Is there an adjustment that needs to be adjusted? Notice that there is 2 screws in the general area.
Thanks!
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Josh, if by the bleeder valve you are referring to what I would call the unloader valve, it is supposed to open when the compressor has reached cut out, to allow air over the piston to bleed off.

Then, when your air compressor starts, a pin on the side of the pressure switch trips, allowing the unloader valve to close.

If air continues to bleed out the unloader valve while the compressor is running, you are correct, it has a problem.

Also, if air continually blows out the unloader valve while the compressor is stopped, that typically is not an unloader valve problem, but a symptom of a leaking check valve.

Could you add a comment here with more information, please.

Cheers,

Bill

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Aug 28, 2012
Pressure switch
by: Josh

Bill,
When unit is on the compressor won't build more than 30psi it just keeps running. When the switch is off, air leaks from the unloader valve. I am leaning towards the pressure switch being bad...what do you think? Also what does the adjustment screw on the pressure switch control?(has a - and a + sign with a "p" above it)

Thanks for your help!
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Josh, maybe a number of things wrong.

With your compressor running, feel at the unloader valve, and see if air is leaking out there. If so, your unloader valve is stuck open.

If not this, then see the Troubleshooting section on the site map page for links to pages with other tips.

As to this... "When the switch is off, air leaks from the unloader valve." the issue here is typically caused by the tank check valve not seating properly, allowing the compressed air in the tank to bleed off, instead of being kept inside the tank.

B.


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919.165140 compressor making a bad sound ?

by todd
(anderson indiana)

#919165140 Craftsman Air compressor parts diagram (Photo: www.searspartsdirect.com)

#919165140 Craftsman Air compressor parts diagram (Photo: www.searspartsdirect.com)

I have a craftsman air compressor model numbe 919-165140.

recently it started making a bad sound so I shut it off and took it apart.

I found out that the cylinder was damaged and the cylinder wall was scratched. I ordered new part and replaced it.

After putting it back together I plugged it in and turned it on and now it runs for about a minute and shuts off.

If I unplug it after about a minute I here a clicking sound and I can turn it back on but it repeats the process. Any ideas?
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A couple of quick checks, Todd.

The first is to pull the switch cover, empty the tank, and start the compressor. Assuming that it does not run up to cut out pressure and stop normally, watch the switch internals (live power warning - be careful) and see if it is the switch that trips off when the motor stops before it is supposed to. If so, then I suspect the pressure switch may be the problem.

If the pressure switch stays on, power is flowing to the motor but the switch does not trip off, then my next thought would be to check the capacitors.

Why not look at these two first, then comment here with results, if any?

Cheers,

Bill


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Craftsman model type (photos) and how to check oil level

by Richard
(Spokane, WA)



I recently purchased a Craftsman 5hp 30 gal compressor. The identity plate has been painted over and I do not have a manual. Can you identify this compressor for me and tell me how to go about checking the oil level?
Thanks,
Richard

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Bill says...

Richard, in the second photo you can see the base of the pump. There is, what appears to be, a sight glass. Below the sight glass is the oil sump drain port.

Typically the oil level in a compressor with a sight glass is to the middle of the glass.

What I am not seeing is the oil fill port. I suppose it is on the other side of the pump, behind the plastic shroud.

Sears has a pretty good parts department and can often supply manuals. Without a model number though, it will be hard to find.

Your request is posted in the hope someone can identify the model and help you with a manual.

Cheers,

Bill


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Apr 07, 2012
Your model air compressor is 919.176850
by: Denny

I have the same compressor.

It is model # 919.176850


Feb 07, 2012
Oil fill procedure for Craftsman 921.153101 compressor
by: Mark

I just purchased a new Craftsman 921.153101 3 gallon 1HP oil lubricated air compressor.

The manual warns the user that the pump is shipped with the oil sump empty, and that oil must be added before the pump is placed in service. However the manual doesn't mention the sump capacity, or how much oil should be added.

Looking at the sight glass port it looks like there's already some oil in the pump. Hard to judge how much, as there's a bubble in the middle of the port...

My question is what is the sump capacity? How can I tell when I've added enough? (Will that bubble in the sightglass go away when oil is added?)

Thanks for your help with this.

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Typically the "full" oil level in a DIY air compressor is when the oil is level with the center of the "bubble". I am amazed that the information about the oil level isn't in the manual. See the Oil Issues on the site map page for more info.



Jan 02, 2012
Thanks!
by: Richard in Spokane

Dave, thank you for the info. The images do look like the same thing. Do you know how old your Craftsman compressor is?

Dec 31, 2011
Fill plug
by: Dave

The compressor looks very similar to mine (model 919.176730). The oil drain plug is pretty obvious in the second picture, being the horizontal plug. There is a vertical plug immediately adjacent to the drain plug. This is the fill plug. My compressor takes only 16oz of 20W compressor oil. No sight glass (the oil is never as high as the round plug).

Dec 29, 2011
It is not a sight glass..
by: Richard in Spokane

There is not a sight glass. It is a metal disc, could someone have replaced the glass with a piece of metal, like a soft plug?
Thanks,
Rich

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Hi Rich. If the sight glass isn't there, and there is no dip stick on the oil fill cap, then you have an aberrant compressors! :-)

It is possible that someone changed out the sight glass for a plug, though I suspect that since the dip stick might be cheaper, that's the hole in the casting where they would have installed a sight glass in a more expensive model of air compressor.

B.


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