GX CS4 How to load grease pot?

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SilentSquirrel

SilentSquirrel

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Jun 1, 2019
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I just cannot figure out how to properly load a CS4 grease pot
i would like to see a picture of where exactly the grease and the rubber diaphragm go.
And how to retract the screw threads that force the gease into the compressor
Apologies
But sometimes simple things confound me
Thanks
Edward
 
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Unscrew the grease pot and unscrew the small plunger knob ccw inside the pot until it stops. Take what ever you can (finger, small scoop etc) and push the grease into the pot you just made room in from unscrewing the plunger. Line the rubber gasket back under the pot and screw it back in. Turn the small cw knob to push the grease until it has resistance again and you're done. FYI : Make sure to line the rubber gasket back up or grease will start to come up the pot at some point from just running.
 
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Here's some pictures as well to help explain it, but as @MACTEN described... his directions make it pretty straight forward to do.

Watch the rubber as some do expand and will need to be trimmed to fit flush.

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20240718_172446.jpg
 
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SilentSquirrel said:
Thankyou @MACTEN and @1900colt

so the grease goes in the top part and the rubber diaphragm goes into the bottom of the lower part

FEIW
There is no hole in the center of my diaphragm
Is that OK?Edward
Click to expand...
Correct on the placement of the grease and rubber part.

The rubber should have a very tiny hole in the center. If your rubber has expanded and needs trimmed, you may need to poke a small hole with a pin. Reason it's small is so a lot of grease does not get sucked into the machine.
 
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1900colt said:
Correct on the placement of the grease and rubber part.

The rubber should have a very tiny hole in the center. If your rubber has expanded and needs trimmed, you may need to poke a small hole with a pin. Reason it's small is so a lot of grease does not get sucked into the machine.
Click to expand...
After reading this I took another look at the diaphragm
There actually is a tiny slit in the center of it
So tiny, it must’ve been made by a Chinese acupuncturist.
And all this time I’ve been led to believe that poking a hole in a diaphragm is a No-no
 
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SilentSquirrel said:
After reading this I took another look at the diaphragm
There actually is a tiny slit in the center of it
So tiny, it must’ve been made by a Chinese acupuncturist.
And all this time I’ve been led to believe that poking a hole in a diaphragm is a No-no
Click to expand...
You don't want to make a bigger hole in it, some people have and it creates to much grease sucked into the compressor. That tiny hole is really all you want. The CS4 does not require much grease. More is not better with the cs4.

Just make sure your diaphragm sits flush at the bottom when you put it in and you'll be good to go. You may want to try and line up the hole in the diaphragm with the small intake hole in the compressor (I've used a pin for this as well) just use a small pin in the diaphragm and line it up when you install.
 
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1900colt said:
You don't want to make a bigger hole in it, some people have and it creates to much grease sucked into the compressor. That tiny hole is really all you want. The CS4 does not require much grease. More is not better with the cs4.

Just make sure your diaphragm sits flush at the bottom when you put it in and you'll be good to go. You may want to try and line up the hole in the diaphragm with the small intake hole in the compressor (I've used a pin for this as well) just use a small pin in the diaphragm and line it up when you install.
Click to expand...
My Omega Aircharger doesn’t even have a rubber disk under the grease pot. The two pumps are two sisters children “cousins to my northern folks lol”. And after 40 hrs it’s doing outstanding so far thank goodness. As stated, they don’t like too much grease. YMMV…Grass
 
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lrg4you said:
I have purchased CS4-I and it didnt come with grease, anyone know which type of grease they are using ? i have bought it from Aliexpress and if I ask them about the grease they will took long time to send it , I want to buy the grease from amazon but I don't know which one.
Click to expand...
Omega Aircharger which are very similar.very very similar. And they recommend using Renewable Libricants food grade lubricants.

IMG_2135.png
 
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SilentSquirrel said:
After reading this I took another look at the diaphragm
There actually is a tiny slit in the center of it
So tiny, it must’ve been made by a Chinese acupuncturist.
And all this time I’ve been led to believe that poking a hole in a diaphragm is a No-no
Click to expand...
I suppose having extra grease in the pot is a convenience thing but I wish I could just add the correct amount of grease at the recommended interval and skip the guesswork about how much or how little is getting where it needs to.
 
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gbmarcht said:
I suppose having extra grease in the pot is a convenience thing but I wish I could just add the correct amount of grease at the recommended interval and skip the guesswork about how much or how little is getting where it needs to.
Click to expand...
I am guess that the amount is so minuscule that either way, it's a bit of an estimate.

With the mfg's recommendation one presumes that the timeline-to-twist recommendation was vetted for longevity.

I'm thinking back to old school automotive method which encapsulates the greased part with expandable rubber boot. Utilizing a zerk fitting, you pump grease into the fitting and watch the boot expand....which is MUCH more than is really needed but buys you year or more peace of mind. Most modern vehicles lack the zerk fitting so folks are left with injecting grease via syringe into the rubber boot.

For the compressor I wonder if having a verifiable, quantitative (visual or measurable) gauge in which to apply grease might be a little over complicated (or over engineered) simply to grease the compressor part. With the CS4 "turn the knob X every Y hours" doesn't seem to be a poor and mistake prone method...that is, unless the grease reservoir is allowed to run empty.

But perhaps I'm not thinking critically enough here and happy to learn better methods.
 
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On my Omega Air Charger I bought the 8oz container of Renewable Lubricants. Was never sure of when to turn the grease screw or how much. Turning 1/8 to 1/4 turns at a time seems to work.
Usually a 1/4 to 1/2 turn as required keeps the squeeking down.
Being in a former profession we always added a little grease at a time till the squeeking stopped usually at over 200 bar.
 
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