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  #1  
Old 02-12-2018, 11:21 PM
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Default Compressor rehab

I've been wanting a larger compressor for my home garage for a while. My 33 gallon Craftsman oil-free unit has been OK but it's 20 years old and for sandblasting and trying to remove large nuts it barely does the job. It's loud too.

I could have picked up a cheap 60 gallon from TSC but I figured I would have to fix a bunch problems on it to soup-it-up. I started looking on craigslist for a used 60 gallon with belt drive and I found one for $150. Ad said it runs well and the picture looked OK. I jumped at it, but there was a twist.
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Old 02-12-2018, 11:35 PM
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The guy said he had lots of calls and someone offered $200 but I was just down the road from him. He said he could meet me in an hour at the gas station if I could pay $200. I thought it would still be a good deal if it was in good condition so I agreed.

I tell myself to look things over real well before buying and not to be blinded by shiny new toys but I didn't take my own advice. I just told the guys to take my money and load it in my truck.

I decided to change the oil before starting it and I'm glade I did. The oil wasn't oil, it was muddy water. I changed the oil wired it up and ran it til it stopped at 125psi, then I drained the oil again. Muddy oil came out. Changed the oil a second time and figured that would be fine because it was running well.

But then I thought, where did the mud come from? The only logical place is through the intake and past the pistons. So I decided to pull the head. Here are the cylinders. They are crusty and scored.
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File Type: jpg cylinder.jpg (30.1 KB, 107 views)
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Barn fresh 1811 with:
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  #3  
Old 02-12-2018, 11:38 PM
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Here is the bottom of the head. The intake reed valve on the right is rusty and has pin holes in it. Replacement reeds are $17 for a complete kit.
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File Type: jpg Head.jpg (30.4 KB, 108 views)
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Rusty 149 project with:
QA42 snow thrower
38" deck

Barn fresh 1811 with:
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QA42A snow thrower
42" snow blade
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  #4  
Old 02-12-2018, 11:42 PM
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The valve plate is a muddy mess. but it cleaned up real nice with a brass brush and some PB blaster. I'll put it back on as-is when the new gasket kit arrives.
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File Type: jpg valve plate bottom.jpg (26.8 KB, 107 views)
File Type: jpg valve plate top.jpg (25.8 KB, 107 views)
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Barn fresh 1811 with:
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QA42A snow thrower
42" snow blade
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  #5  
Old 02-13-2018, 12:24 AM
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The good news is it actually ran fine and there was no water in the tank, not a drop. Although the pistons and rods look pretty good after cleaning, the steel cylinder sleeves are quite scored so I plan to replace the rings for $30 and hone the crap out of the jugs. It's only scored where the rings traveled, the skirt area still has crosshatch. The crank bearings are tight and smooth and the journals are all smooth but I may use some 600 to shine them up, they are a little stained.

If this were a car (or a cub) i'd bore it out and replace the pistons or re-sleeve it but it just has to pump some air to run a few of my hobby tools.
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File Type: jpg scoring.jpg (22.3 KB, 108 views)
File Type: jpg piston.jpg (28.3 KB, 107 views)
File Type: jpg crank.jpg (31.5 KB, 108 views)
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Barn fresh 1811 with:
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QA42A snow thrower
42" snow blade
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  #6  
Old 02-13-2018, 12:35 AM
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The pump is a Devilbiss model CAC-4029 used in Craftsman and Porter-Cable and probably many others. I like the simplicity and sturdiness of it but the air cleaner is pathetic which I'm sure is the reason the pump is so dirty inside. The filter is like a thick chunk of wool with a poor seal around it (bottom center of pic). I plan to cover the filter opening with a heavy piece of aluminum and drill a hole to attach a filter element. I'm open to ideas.
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File Type: jpg KK-4312-2.jpg (17.7 KB, 107 views)
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QA42 snow thrower
38" deck

Barn fresh 1811 with:
44c mowing deck
QA42A snow thrower
42" snow blade
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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