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So, my compressor locked up, now what?

bfr57

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May 31, 2013
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133
I have a 2008 Campbell Hausfield 80 gallon, single stage, dual cylinder compressor that locked up on me yesterday; tag says 16 cfm @ 90 psi. The motor is still good as it smoked the belt pretty good! I've run it pretty hard with sandblasting, powder coating, air tools, etc. I do part time powdering so the blasting pot puts a demand on it. The motor says continuous run, and figured the pump was also? So, dilemmas; rebuild the pump or buy completely new unit. What are the "usual" suspects when one locks up? I know CH isn't for industrial use, and I figure I'm between a hobbyist and industrial. I know there are better brands out there, what are some recommendations? If I decide to rebuild, who are some good suppliers of parts?
 
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tcianci

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Well the unit is 8 years old and you noted that it sees a lot of use. Maybe a HF replacement pump is in order. It may get you up and running for not a lot of money. I'm guessing that a CH replacement would be a bit spendy and may approach the cost of a new unit. If you do end up with a new unit, consider one with a higher CFM rating so that your duty cycle is easier on the hardware. Also can you drop to a smaller nozzle size on your blaster? That is a little more forgiving as far as duty cycle goes too.

HF has a replacement pump designed for a 5 HP motor with about a 17 CFM delivery at 1080 RPM for 169.00. There always a 20% coupon available for that type of stuff. That may have you up and running for under $140.00
 
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matt_i

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My free advice if you sandblast is to get a compressor that can handle such duty. In my opinion that duty generates the most heat in the pump asm, as well as putting the most mechanical stress on the entire system. I would personally choose one of (Quincy, Ingersoll Rand, Kellogg, Saylor-Beall) to name a few. I have an I-R T-30 compressor, if it dies my next one will be a Quincy.

If you enjoy seeing why things failed, I'd take the current one apart, perhaps you can craigslist the tank and/or motor.
 

countryroad82

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I had a Poter Cable which iirc are similar to yours. The pump and s aluminum and such. I killed mine twice before I decided to replace it with a better unit.the last time was what le I was painting a truck.... Bad days there. I was in the same boat as you, lots of sandblasting and painting, DAs running, grinders, etc just killed it.
 
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bfr57

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May 31, 2013
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Re: So, my compressor locked up, now what? Update

So, tore the pump down and looks like a piston/rod failure. After it cooled it must have loosened up as the pump wasn't locked. Here are some pics of the damage; galled rods and piston, but the crank and cylinder wall doesn't look too bad; can't catch a fingernail on any of the surfaces. I could probably clean them up with some emery cloth. Tolerances look to be pretty loose on these pumps?

So, now the dilemma, rebuild or replace.

Nehog: Great idea on the HF pump. Picked one up this morning (store only 5 miles away) but wasn't even close to bolting up. I didn't want to go through the pain of mounting it up since it was only a temporary. Oh, I also learned that the 20% off coupons don't work on compressors, and a ton of other stuff at HF; it's all in the fine print I can't read1

Shoot Summ: I like the looks of that Eaton, but don't see any dual stages currently for sale, only singles. I'll have to call them to find out. Is your's mounted on a CH tank? It sure looks like it. Had to drill new holes I take it?
How bad did they get you for shipment?

And that brings me to another question. These two Eaton pumps, a single and dual stage, are almost identical in CFM. The single actually has more. So what's the benefit of a dual stage? I don't need 175 psi for anything.
 

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matt_i

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Is there some internal structure inside the piston casting on the skirt that mimics the areas of the galling? It appears as though some areas got hotter than others and expanded.

Also I'm curious if the rod is rifle-drilled just up to the wrist pin or is there a jet/nozzle/orifice somewhere up underneath the crown?
 
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roblouvasz

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Somewhere between the end of the line and the midd
Here's my 0.02 cents. Try to find a used Quincy with a pressure lubed pump. I bought a new 5hp 80 gallon IR from tractor supply ten years ago. Well three motors on the IR and ten years later I found a used Quincy. Got sick of repairing the IR. If you find an IR, make sure it's grey not tan. My IR is my back -up.
 

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engineer2

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bfr57, where do you live? We have a compressor pump laying around at work that nobody wants. Unknown condition. It's probably not worth shipping though.
 

md21722

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Nov 30, 2015
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Mt Juliet, TN
Single stage are fine for fire sprinklers or climate control, but suboptimal for air tools. By the time you factor in pressure drop across the hose, regulator, and couplers, you need them to cycle on at least 115 PSI and cycle off at 140 PSI... but single stage "slow down" after about 110 PSI.

In your case with with a single stage pump, the tank is probably not rated for what the dual stage can do. And the better dual stage compressors have big flywheels which may cause clearance problems and complicate the conversion. Then you'll probably also need a new motor sheave and belts and have to ditch the belt guard.

Easier to start by buying a nice one on craigslist.
 

shoot summ

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Jun 8, 2010
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Re: So, my compressor locked up, now what? Update

Shoot Summ: I like the looks of that Eaton, but don't see any dual stages currently for sale, only singles. I'll have to call them to find out. Is your's mounted on a CH tank? It sure looks like it. Had to drill new holes I take it?
How bad did they get you for shipment?

It's a Puma 60 gallon tank. I had to add a piece of angle to the mount plate as the Eaton head is huge. The thing turns about 800 rpms, I expect it to last forever as it just lopes along. And it it REALLY quiet. It was about $150 for shipping, total was a little over $600. Seems like a lot, but to me the head is the heart of the compressor, I figured if I was going to the effort to replace it, and I didn't want any future issues, I would spend the money to do it right.

It keeps up with anything I do, media blasting, air sanders, etc.
 
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bfr57

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May 31, 2013
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Is there some internal structure inside the piston casting on the skirt that mimics the areas of the galling? It appears as though some areas got hotter than others and expanded.

Also I'm curious if the rod is rifle-drilled just up to the wrist pin or is there a jet/nozzle/orifice somewhere up underneath the crown?

Yes, the piston skirt was galled pretty bad.
This is a total splash oil system.
 
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bfr57

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Re: So, my compressor locked up, now what? Update

Thanks all, I think I'll join Shoot Summ and get an Eaton. My tank is rated for 200 psi so that's not a problem. My compressor is in an enclosure, so I'm not too worried about a guard as no one can get in without tearing it apart. One issue I'll have to overcome is finding a method to mount the Hayden intercooler I installed on the outside of the current guard. It works pretty good pulling water out and the refrigerant air dryer I have after that makes sure everything going into the tank is dry.
 

Lee Celtic

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Jul 1, 2016
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Llanberis, North Wales UK
Just for information..

I had a small compressor lock up and after cooling it started up fine then locked again.. turned out to be the check valve had blown and the back pressure from the tank was working against the piston.. nothing to do with heat at all.. it just didn't have the power to push the piston up against the back pressure..(belt slipped and melted on the drive pulley) not saying thats what happened to yours just adding this problem to the look out for list.. :)
 
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bfr57

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May 31, 2013
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Just for information..

I had a small compressor lock up and after cooling it started up fine then locked again.. turned out to be the check valve had blown and the back pressure from the tank was working against the piston.. nothing to do with heat at all.. it just didn't have the power to push the piston up against the back pressure..(belt slipped and melted on the drive pulley) not saying thats what happened to yours just adding this problem to the look out for list.. :)

Boy, that is exactly what mine did. I remember thinking that it was weird that the pump turned free once I got into it and then not finding anything catastrophic in tear down. But, I did remove the line coming off the head unit while the tank was draining, so there was some pressure on the check valve. If it was bad I should've had pressure there. But, I think I'll try to test it with my little pancake compressor just to verify. Still looking at the Eaton, it just costs a little to get it out west.
 

ColoMid

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Nov 5, 2013
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22
Location
Canton, Ga
Along these lines, a compressor is only as good as its air filtration.
Always room for improvement over the OEM unit. Keep them clean. :thumbup:
Rich, Canton, Ga
 
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