Kellogg American air compressor restoration, need help!

[ben591]

Hello! I've been lurking around here for quite some time but this is the first time I've needed to post anything! I bought this old Kellogg compressor locally for reasonably cheap.



I did a little cleanup work on it, all I had to really replace was the motor since it was a 3 phase, the pump is in great shape, don't know anything about it as it looks to be a replacement. I really just want it to be operational and functioning correctly, so here's my question(s):

The centrifugal unloader had one fitting that had nothing on it, seen below, is it supposed to have a copper line that goes to the other stage?



Also, this fitting was screwed into the 2" NPT plug right below where the decal on the tank, any info on what it is would be greatly appreciated!



Lastly, the finned copper tubing that goes from the pump to the tank for horribly butchered I'm guessing when they put the new pump on, don't know if I can save it. Is there anywhere I can get a new one? Seems like I can't come up with anything on the internet, probably just searching in the wrong spot. Thanks for any and all help!

 

[The Tool Tyrant]

Beautiful paint job on the receiver! The pump looks like an old Saylor-Beall knock-off.
The fitting on the unloader connects to the side port on your check valve. There is a small hole behind that fitting where the air bleeds off.
The fitting in your hand is the check valve. The check valve is a one-way valve that keeps receiver air from bleeding back to the pump. It appears that you have one located in the top of the receiver where you will run the infeed line from the pump.
Previous owner may have had a second pump feeding the receiver and used the lower bung for the infeed line.

The finned line...no idea. On the S-B pumps, the intercooler that your finned line is plumbed into feeds 1st stage air to the second stage. Some of the S-B knock-offs have the smaller aftercooler (opposite side of the intercooler) as yours' does, this is where your infeed line to the receiver should be plumbed to, so the additional finned line is a mystery to me. Is the opposite end plumbed into something or is it open?

 

[ckeboss]

My guess is you are a body guy? Very nice paint job.

I believe you will plumb the unloader line into the check valve.

Here is a PDF of a similar model. You can see on page 13/14/15

 

[The Tool Tyrant]

BTW, the S-B 705 runs @ 845 RPM with a 1725 RPM, 5 HP motor. If you pump sheave is 16.75Ø and your motor is a 1725 RPM motor, your drive sheave should be 8.2Ø if you wish to stay in that range.

I don't see a safety valve on the receiver (is it hidden?) if not, you could add a tee between the flex line from the pressure switch to the brass fitting on the side of the receiver, or a tee under the pressure switch. The former would be a little cleaner in my opinion.

 

[Speed-Racer]

Really nice looking paint job, would be nice if you shared your process. What color blue did you use?

 

[ben591]

Beautiful paint job on the receiver! The pump looks like an old Saylor-Beall knock-off.
The fitting on the unloader connects to the side port on your check valve. There is a small hole behind that fitting where the air bleeds off.
The fitting in your hand is the check valve. The check valve is a one-way valve that keeps receiver air from bleeding back to the pump. It appears that you have one located in the top of the receiver where you will run the infeed line from the pump.
Previous owner may have had a second pump feeding the receiver and used the lower bung for the infeed line.

The finned line...no idea. On the S-B pumps, the intercooler that your finned line is plumbed into feeds 1st stage air to the second stage. Some of the S-B knock-offs have the smaller aftercooler (opposite side of the intercooler) as yours' does, this is where your infeed line to the receiver should be plumbed to, so the additional finned line is a mystery to me. Is the opposite end plumbed into something or is it open?

BTW, the S-B 705 runs @ 845 RPM with a 1725 RPM, 5 HP motor. If you pump sheave is 16.75Ø and your motor is a 1725 RPM motor, your drive sheave should be 8.2Ø if you wish to stay in that range.

I don't see a safety valve on the receiver (is it hidden?) if not, you could add a tee between the flex line from the pressure switch to the brass fitting on the side of the receiver, or a tee under the pressure switch. The former would be a little cleaner in my opinion.

Thank you! That's already more info than I could dig up in a long time! So that is the check valve going in to the top with the 90 degree flare coming off from it, it was on the side when I got it, which is where the re-routing of the finned tube came in. But judging by the PDF the other user posted as well as what you said, I'll just have to find a way to plumb it in to the check valve. There's one finned tube going between the stages and one going to the tank. I imagine it to look something similiar to this.




And thank you for the math on the sheaves! Old motor was 1715 I believe? New one is 1760 and the sheaves are practically identical to your numbers, so I shouldn't be too far off! And as far as the safety valve, it's on the back side of the brass manifold, just can't see it!

 

[ben591]

My guess is you are a body guy? Very nice paint job.

I believe you will plumb the unloader line into the check valve.

Here is a PDF of a similar model. You can see on page 13/14/15

Thank you! I actually took it in to get professionally done because I'm not much for painting! And thank you for attaching that PDF, that really helps a lot and looks like it's practically the exact same pump as what I have, just now need to find a tee to go on top of the check valve!

 

[ben591]

Really nice looking paint job, would be nice if you shared your process. What color blue did you use?

Thank you! I actually took it in to get it done, wasn't cheap ($375 at the paint shop plus like $5p for paint maybe?) but was totally worth it after I got it home and waxed up! I went to our local Napa paint shop and they were very helpful finding something close to the old Kellogg American blue, which is pretty much identical to a Pontiac engine blue. The number from Napa I believe was a 42181. Here's the label if it helps!

 

[ckeboss]

Thank you! I actually took it in to get professionally done because I'm not much for painting! And thank you for attaching that PDF, that really helps a lot and looks like it's practically the exact same pump as what I have, just now need to find a tee to go on top of the check valve!

Did you take it to an auto body shop? I love how they even painted the air filter housing with metallic.

Do you know if they used 2k clear on it all?

 

[The Tool Tyrant]

If you look at the valve arrangement on the Saylor - Beall, you'll see that the intercooler CONNECTS the first stage to the second stage. It appears on your pump, that the manufacturer does NOT use the intercooler to connect the first to second, but rather added the finned tubing to the bottom of the intercooler and plumbed it to the opposite side of the head (more pics would help).
I don't recall seeing such an arrangement on the S-B clones before and neither have I seen a Kellogg-American with a cast iron intercooler...not saying it doesn't exist...just never have seen one.

Where is MacMcMacmac when you need his insight? If he doesn't know what pump you have...no one will!

 

[ben591]

If you look at the valve arrangement on the Saylor - Beall, you'll see that the intercooler CONNECTS the first stage to the second stage. It appears on your pump, that the manufacturer does NOT use the intercooler to connect the first to second, but rather added the finned tubing to the bottom of the intercooler and plumbed it to the opposite side of the head (more pics would help).
I don't recall seeing such an arrangement on the S-B clones before and neither have I seen a Kellogg-American with a cast iron intercooler...not saying it doesn't exist...just never have seen one.

Where is MacMcMacmac when you need his insight? If he doesn't know what pump you have...no one will!

Yeah sorry I need to improve my photo taking skills! here's the best view I could get of the intercooler tubing that's on it now


And then here's a really horrible picture when I first bought it, you can see they just said F it and put a loop off the side of the pump in to the side of the receiver.

 

[ben591]

Did you take it to an auto body shop? I love how they even painted the air filter housing with metallic.

Do you know if they used 2k clear on it all?

Yep I took it to a body shop! I don't know what clear he used but I will ask him next time I go in there as I am NO paint expert

 

[Mr. Tool]

Excellent and beautiful restoration job on that vintage compressor!

I enjoy reading and seeing vintage things, etc. brought back to life once fully restored and fully functional.

They don't make them like that anymore.

 

[ben591]

Excellent and beautiful restoration job on that vintage compressor!

Thank you very much sir!

 

[The Tool Tyrant]

Thanks for the added photos as they clear up things. The finned copper tube is just an 'extension' of the intercooler (strange). The cast iron intercooler does indeed connect low and high pressure ports as the S-B does.