I was sure my GX CS4 needed rebuilt.

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MACTEN

MACTEN

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Nov 18, 2020
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EDIT: I had 20-30 hours on the machine I'm writing about prior to purchasing an hour meter for it. So 70-80 hours filling tanks.
I was filling a 9L tank a few days ago and I stopped hearing the clop clop clop.. (this one makes a slight clopping sound vs the CS4-I for some reason.
But it stopped filling over just over 200 bars.
I checked a few things over, checked the check valve, burst disc.. Nada
I decided to take it apart and take a look in the cylinders.
They were covered in grease, like smothered in grease.
All the check valves were full of grease as well.
So I cleaned it all up inside. Gave a very slight lube with the good stuff (Renewable Lubricants NLGI 2 Food Grade EP Grease)
Put it back together and it's doing a dead head test at 29 seconds (about the same as new)
It has 51.9 hours on it and the rings looked pristine under that grease. No self caused maintenance required still. Just some maintenance from me turing the grease knob too much I guess. Amazing.
The over one, CS4-I, has well over 60 hours on it now.
Just be very sparing with the grease pot. Use almost none I guess..
Best little portable compressors I've owned.
 
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MACTEN said:
I was filling a 9L tank a few days ago and I stopped hearing the clop clop clop.. (this one makes a slight clopping sound vs the CS4-I for some reason.
But it stopped filling over just over 200 bars.
I checked a few things over, checked the check valve, burst disc.. Nada
I decided to take it apart and take a look in the cylinders.
They were covered in grease, like smothered in grease.
All the check valves were full of grease as well.
So I cleaned it all up inside. Gave a very slight lube with the good stuff (Renewable Lubricants NLGI 2 Food Grade EP Grease)
Put it back together and it's doing a dead head test at 29 seconds (about the same as new)
It has 51.9 hours on it and the rings looked pristine under that grease. No self caused maintenance required still. Just some maintenance from me turing the grease knob too much I guess. Amazing.
The over one, CS4-I, has well over 60 hours on it now.
Just be very sparing with the grease pot. Use almost none I guess..
Best little portable compressors I've owned.
Click to expand...
For the most part, i've been using mine with an a moisture filter, and it usually takes anywhere between 29-30 seconds for a dead head test using the filter. Without the filter the last 2 times I checked it's been about 25 seconds and I have 12 hours on it so far, and I have never turned the grease nob.

Good to know that yours is still safe even after sixty hours!
 
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markhooper said:
it's kinda nice you have a hour meter, I have the Omega trail charger,I believe it is likely the same compressor but no hour meter, had it 8 years and I've only turned the grease pot less than once a year.. it's been a great compressor.
Mark
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same here . years of service , but i only top off tube guns .
 
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BlackICE said:
I thought the correct grease is NLGI 0 not 2.

I hard is the teardown, cleaning and regrease?

I think greasing this way is superior to just turning the screw. Can't see how the grease will be optimally distributed that way to all 4 stages.
Click to expand...
I was directed to the grease from an Omega person. Same machine.
 
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MACTEN said:
EDIT: I had 20-30 hours on the machine I'm writing about prior to purchasing an hour meter for it. So 70-80 hours filling tanks.
I was filling a 9L tank a few days ago and I stopped hearing the clop clop clop.. (this one makes a slight clopping sound vs the CS4-I for some reason.
But it stopped filling over just over 200 bars.
I checked a few things over, checked the check valve, burst disc.. Nada
I decided to take it apart and take a look in the cylinders.
They were covered in grease, like smothered in grease.
All the check valves were full of grease as well.
So I cleaned it all up inside. Gave a very slight lube with the good stuff (Renewable Lubricants NLGI 2 Food Grade EP Grease)
Put it back together and it's doing a dead head test at 29 seconds (about the same as new)
It has 51.9 hours on it and the rings looked pristine under that grease. No self caused maintenance required still. Just some maintenance from me turing the grease knob too much I guess. Amazing.
The over one, CS4-I, has well over 60 hours on it now.
Just be very sparing with the grease pot. Use almost none I guess..
Best little portable compressors I've owned.
Click to expand...
wish you had a video of that !!
 
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Good to hear you didn’t have to replace anything. I agree it is probably much better to periodically remove the cylinder head and grease that way. Guessing a much better control of how much actual grease is going in. I’m shocked there are no tear down vids (at least that I’ve seen) on the cs4. Pretty crazy. They are awesome machines though. I have a two year old cs2 that I’ve done nothing but periodical head removal, cleaning and light greasing and still runs 20 second dead head. I run it 15 minutes a pop due to using a large fasttobuy inline filter.
 
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It is funny to me how everyone wanted maintenance free then they come out with grease pots....LOL

My JTS has a roller bearing setup on the crankshaft instead of oil/grease lubrication, making for a maintenance free system......The JTS 100 setup is back to grease pots? My unit was also designed with an exhaust pipe system through the center of the compressor that further cools the unit. I have seen no other compressor that has this feature?

Why would anyone want to grease, these units run extremely low on RPM.......
 
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WoodWelder said:
It is funny to me how everyone wanted maintenance free then they come out with grease pots....LOL

My JTS has a roller bearing setup on the crankshaft instead of oil/grease lubrication, making for a maintenance free system......The JTS 100 setup is back to grease pots? My unit was also designed with an exhaust pipe system through the center of the compressor that further cools the unit. I have seen no other compressor that has this feature?

Why would anyone want to grease, these units run extremely low on RPM.......
Click to expand...
The cs4 has roller bearings... even the newer cs2 and cs3 models have roller bearings.
 
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MACTEN said:
EDIT: I had 20-30 hours on the machine I'm writing about prior to purchasing an hour meter for it. So 70-80 hours filling tanks.
I was filling a 9L tank a few days ago and I stopped hearing the clop clop clop.. (this one makes a slight clopping sound vs the CS4-I for some reason.
But it stopped filling over just over 200 bars.
I checked a few things over, checked the check valve, burst disc.. Nada
I decided to take it apart and take a look in the cylinders.
They were covered in grease, like smothered in grease.
All the check valves were full of grease as well.
So I cleaned it all up inside. Gave a very slight lube with the good stuff (Renewable Lubricants NLGI 2 Food Grade EP Grease)
Put it back together and it's doing a dead head test at 29 seconds (about the same as new)
It has 51.9 hours on it and the rings looked pristine under that grease. No self caused maintenance required still. Just some maintenance from me turing the grease knob too much I guess. Amazing.
The over one, CS4-I, has well over 60 hours on it now.
Just be very sparing with the grease pot. Use almost none I guess..
Best little portable compressors I've owned.
Click to expand...
With that much grease, you'll want to take the pressure guage off, remove the brass nut under it and dump out the beads. Clean out the trap, clean the beads and put them back in. You may even have to completely remove the water trap to get them all out. There will be grease in there and the water trap will not work properly.

If your drain hose is dark and no longer clear, it definitely needs to be cleaned.
 
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WoodWelder said:
It is funny to me how everyone wanted maintenance free then they come out with grease pots....LOL

My JTS has a roller bearing setup on the crankshaft instead of oil/grease lubrication, making for a maintenance free system......The JTS 100 setup is back to grease pots? My unit was also designed with an exhaust pipe system through the center of the compressor that further cools the unit. I have seen no other compressor that has this feature?

Why would anyone want to grease, these units run extremely low on RPM.......
Click to expand...
just to let you know, I haven't taken my Omega trail charger apart, but I believe it has roller bearings like yours.. the grease pot, you turn the knob every so many hours and it puts a measured amount of grease basically in the intake and that works it's way through all the stages.. if you were to turn the knob more than the suggestion amount it would basically flood the cylinder and especially the valves and that's when you would definitely have trouble..
just a little bit every so often.. don't need drounded in grease..
Mark
 
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1900colt said:
With that much grease, you'll want to take the pressure guage off, remove the brass nut under it and dump out the beads. Clean out the trap, clean the beads and put them back in. You may even have to completely remove the water trap to get them all out. There will be grease in there and the water trap will not work properly.

If your drain hose is dark and no longer clear, it definitely needs to be cleaned.
Click to expand...
might as well warm up the beads in the oven after cleaning up so they are completely dried out and like new .
I'm curious if the grease will like soak into the beads and keep them from absorbing water 🤔🤔
I turned my grease pot about once a year except for a couple years I didn't have time to refill my gun more than a few times
Mark
 
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markhooper said:
might as well warm up the beads in the oven after cleaning up so they are completely dried out and like new .
I'm curious if the grease will like soak into the beads and keep them from absorbing water 🤔🤔
I turned my grease pot about once a year except for a couple years I didn't have time to refill my gun more than a few times
Mark
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BlackICE said:
I think the beads are of little use they will be saturated very quickly.
Click to expand...
The beads do not collect water, they create surface area for the water to condense on, when you open the blead valve, it blows that water off of them.

To much grease and the beads end up being a big glob in there and no longer will work as intended.
 
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1900colt said:
The beads do not collect water, they create surface area for the water to condense on, when you open the blead valve, it blows that water off of them.

To much grease and the beads end up being a big glob in there and no longer will work as intended.
Click to expand...
ok. makes sense, I just assumed that when you were talking about beads it would be like decessant beads.. but really what you are saying makes more sense than that because it's not like user service able to change them easily..
are they glass? if so would be good to clean up with something that would remove all the grease off the surface of them.
Mark
 
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markhooper said:
ok. makes sense, I just assumed that when you were talking about beads it would be like decessant beads.. but really what you are saying makes more sense than that because it's not like user service able to change them easily..
are they glass? if so would be good to clean up with something that would remove all the grease off the surface of them.
Mark
Click to expand...
I honestly do not know what they are made of exactly. I clean them with soapy water and roll them between paper towels to clean them up. They are a clear to somewhat cloudy in color.

The amount of grease I've seen on some is impressive
 
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1900colt said:
I honestly do not know what they are made of exactly. I clean them with soapy water and roll them between paper towels to clean them up. They are a clear to somewhat cloudy in color.

The amount of grease I've seen on some is impressive
Click to expand...
sounds like glass beads .
 
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