Eaton compressor pump install w pics

[suprdave737]

Just swapped in a Eaton cast iron V-twin pump to replace the trashed aluminum inline 2 on my devilbiss compr. The new pump was $145. Is 13 cfm displacement. Output is 9.7 cfm at 100psi. 135 psi max. Had to weld on a couple tabs to extend the platform on my tank so I could mount the pump as its base is larger than the old one.

Also bought a 3.5 inch v-belt pulley for the motor from Eaton as the old one was flat belt style. It gives the right pump rpm with the 3450 rpm motor on this comp. Pump pulley is 10.5 in. Got a belt at oreilly auto. Gates part # A-49 which is actually 51 inches long. Center to center on the pulleys is 14 in with the belt tight.

The pump comes with 1/4 in copper tubing from valve unloader fittings on each of the heads that would go to a unloader valve if you were using it continuous run mode with a gas engine. Since this is electric those fittings just get capped. Which is good cause UPS smashed them for me anyway along with the dent you see in one of the aircleaner cans.

The discharge fitting on the left cylinder is a flare type. It came with a nut but I had to drill it some to allow the 1/2 in aluminum tube to slide over it so I could then flare the tube. I told Eaton it would be better if they just used a 1/2 in female pipe thread fitting for the discharge. I then used 1/2 in compression fittings from there to the tank. The 1/2 in aluminum tube I bought from McMaster Carr was too hard and wouldnt bend without kinking so for now I just used the 90 degree compresssion fittings to get it up and running. I will redo it later with smooth bends and get rid of the restrictive 90 degree fittings. I did use the elbow part of the old discharge tube going into the tank. There is a T fitting at that point and it has 2 reducers down to a 1/4 in copper tube that goes to the pressure switch dump valve which bleeds the air out of the discharge line when the compressor shuts off which allows the pump to start unloaded.

Ran it some today but havent done any work with it yet. Its quieter than the old one. They have a 5 year warrantee on these so thats cool. Has disc valves - supposedly better than the cheaper reed-finger valves. We shall see how it holds up.

http://www.eatoncompressor.com/page/page/518643.htm

http://i210.photobucket.com/albums/bb262/thedavo727/COMP1.jpg

[suprdave737]

http://i210.photobucket.com/albums/bb262/thedavo727/COMP2.jpg

http://i210.photobucket.com/albums/bb262/thedavo727/COMP3.jpg

[ChiScouter]

I have worked on a bunch of compressers that used those aluminum air cleaners. Those wing nuts tend to vibrate which chews up the threads on the stud and the nut. The nuts never seem to actually fall off they just wear the threads and then the outer bell rattles and you can't tighten it back down. Then you have to replace the whole air cleaner assembly. Replace them with a nylon self locking nut, its not like you change them that often anyway.

[tony2wd]

Hi there. Im looking to get this same compressor to replace my blown pump. Wondering if you got it going and if your happy with it? Did you happen to compare it to those at harbor freight? They look identical. And about 50 bucks cheaper, just dont know if the HF is crap. Heard lots of good things about Eaton. In the link you posted the pump doesnt come with unloaders, were they included.

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93786

[MikeW]

Are these Chinese made?

[bigdreamin]

Are these Chinese made?

No they are made near Cincinnati Ohio. Eaton Compressor (www.Eatoncompressor.com)

[cabletech]

No they are made near Cincinnati Ohio. Eaton Compressor (www.Eatoncompressor.com)

The pump heads are imported from either China or India, but I don't remember which. I believe it's China though.

Parts of their assembled compressor are USA made, but the pump head is not.

http://www.eatoncompressor.com/eatoncompressor.html

{notice they say "our tanks are made in USA", but not pump heads or motors}

I'm not knocking them, I almost bought one, but found a good deal on an I-R. ;)

[bigdreamin]

The pump heads are imported from either China or India, but I don't remember which. I believe it's China though.

Parts of their assembled compressor are USA made, but the pump head is not.

http://www.eatoncompressor.com/eatoncompressor.html

{notice they say "our tanks are made in USA", but not pump heads or motors}

I'm not knocking them, I almost bought one, but found a good deal on an I-R. ;)

After reading your link it sounds like the housing is cast over seas and the pump itself and many of the other components are made/assembled in the USA.

Either way Eaton is still on of the best compressors money can buy.

[Brent5631]

I'm sorry but it looks awfully similar.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93786

[Indyguy]

I'm sorry but it looks awfully similar.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93786

Well shit, it must be the same if it looks the same:eek: Lets not worry about pesky little details like all cast vs cast-sleeved aluminum. Thank you for doing your part to slowly drag this website down with worthless noob ignorance, brent.:flipoff2:

[Brent5631]

Yeah i saw that. but it has the same castings and most likely the same internals. so it's probaby just the same piece of junk. but it's one redeeming mark is its warranty from eaton.
probably not a bad bad buy. but i think you get what you pay for.

[suprdave737]

Yes the pump is from china. Has a good warranty so :flipoff2:

[randii]

Try connecting the inlets of those filters and porting them elsewhere... you'll be amazed how much noise radiates off the inlets.

Randii

[tony2wd]

I have been looking into these for a little bit. The one from Harbor freight I believe has reed valves in the heads and eaton uses disk valves. Also you can get replacement parts from eaton. HF doesnt list anything about bearings or where there manufactured, Hell you cant even get the double pulley you need for the belts. Im almost sure they come from the same place in china but i would hope the eaton is made to better specs. Either way didnt mean to start world war III with china over a $140 compressor. Super dave let me know if it does a good job keepin up with you tools.

[rockmup]

I have the 3 cyl. pump on my comp. and couldn't be more pleased.

[azhayseed]

When I looked at the 2 photo's of the compressors I noticed a couple things.
The cylinders and heads are very different, the main body casting looks the same.
The eaton's head uses disc valves. these are a much better industrial type heavy duty valve HUGE difference. Well worth the extra bucks by themselves.
The Eaton looks to have cast iron cylinder and head. H F looks to have aluminium head and cylinders, probably not even sleeved. But I'm not sure about that. I'm sure the Eaton will last much longer.
lots of manufacturers have stuff made in China but they have them made to their specs and Quality control standards. We all know HF has no quality control standards just make stuff as cheap as it can be made.
I'm really not trying to bad mouth HF I have one of their Big black compressors it's a few years old and it see's alot more use than most home compressors but it was all I could afford at the time. Besides I have a high quality real 5 HP motor to replace the motor with when it dies and I'll get a good pump when that's needed, the Tank should be fine for a long time.

[suprdave737]

[QUOTE=tony2wd;9231080 Super dave let me know if it does a good job keepin up with you tools.[/QUOTE]

Have been using it a bunch lately and it works great, as good or better than any other 5hp size comp Ive used anywhere. Im happy with it.

[6869704x4]

Have been using it a bunch lately and it works great, as good or better than any other 5hp size comp Ive used anywhere. Im happy with it.

I bet you were grinnin like a mule eating briars when you first realized your compressor could keep up with your tools, I know I was.

[suprdave737]

Update: Still workin good.

[leone nick]

In a past life i put together compressor packages and ran the parts inventory area for a local company. They were a Gardner Denver distributor. They bought these cheap made in China pumps just like the one you have. The reason was the GD pumps were several times the cost of the ones made in China. Most did duty as HVAC controls some were shop compressors. Our 175 PSI 2 stage package with a 5hp motor(Baldor) went for about $1000 to our DISTRIBUTORS. The filters are cheap and will self destruct. Look for Soleburg(?) filters. They are about the size of a Fram V8 oil filter and will quiet the compressor even more. They come in various sizes and with different number of holes in the intake side(fresh air side). get filters with the most number of holes possible they are very quiet. Eg 3 hole are noiser than 5 hole ones.

Nick