GX CS4 - how big is the hole for the rubber gasket in the grease pot?

[Phil.Probe]

I've got about 40 hours or so on my CS-4, but recently I noticed it's sounding a little different. I checked the grease pot and after cleaning it out I can't really see a hole in the rubber gasket. There's a slight indent in the center when the hole should be. Is this hole supposed to be visible to the naked eye, or is it a tiny little pin hole that closes up unless it's under pressure.

 

[Hateful McNasty]

I don't know , bit this grease thing with gx is something they really need to clear up and give good maintenance instructions . So many ask or in the dark on this ..

 

[Phil.Probe]

I don't know , bit this grease thing with gx is something they really need to clear up and give good maintenance instructions . So many ask or in the dark on this ..

Yeah, half the threads on the front page are GX grease threads lol.

 

[Hateful McNasty]

Looking at this guy's he says a small hole in it .. bit it must be small cause expanding the picture of it I still can't see the hole ..lol

Anyway I'd have to guess a small straight pin / safety pin worth pushed through max....

The CS4 Grease Pot - How to add grease to your compressor and refill the pot

The GX CS4 is a very cool compressor and one of the two ways it gets the long run time is through staying properly greased. (The other is through the use of fluid coolant that I covered in a blog post about setting up and testing the unit). After 4-6 hours of compressing air with … Continue...

blog.roninsgrips.com

 

[Phil.Probe]

Looking at this guy's he says a small hole in it .. bit it must be small cause expanding the picture of it I still can't see the hole ..lol

Anyway I'd have to guess a small straight pin / safety pin worth pushed through max....

The CS4 Grease Pot - How to add grease to your compressor and refill the pot

The GX CS4 is a very cool compressor and one of the two ways it gets the long run time is through staying properly greased. (The other is through the use of fluid coolant that I covered in a blog post about setting up and testing the unit). After 4-6 hours of compressing air with … Continue...

blog.roninsgrips.com

It's a little hard to see from those pictures, but it does look pretty small. BTW I've added a pic of my gasket to the OP.

I don't want to poke anything through it just yet due to a possible warranty claim. I.E. my compressor will soon be junk if it hasn't gotten any grease in 40 hours of operation!

 

[two4spooky]

IIRC the hole in my units diaphragm was more like a small tear or short slit in the rubber near the middle. I would not have noticed if I had not been looking for it. Had to pull and stretch to find.

 

[two4spooky]

That said I know grease is going into the cylinder. I turn the grease knob with compressor pumping and the sound changes for a few seconds.

 

[F6Hawk]

It's a pin hole. Nearly invisible unless you remove the rubber diaphragm and stretch it.

Unstretched

Stretched

 

[Hateful McNasty]

Wount cx just send you a new diaphragm ? Then ya got one to play with.. even to what 24spooky days. I don't see it much over a pin prick hole to squiggle in the grease..

 

[F6Hawk]

The diaphragm is kind of irrelevant in the equation. What matters most is the hole going into the cylinder head.

 

[Hateful McNasty]

The diaphragm is kind of irrelevant in the equation. What matters most is the hole going into the cylinder head.

View attachment 446445


View attachment 446446

Must have some relevance or ot would not be in there or needed .. it prevents over self greasing / kinda a seal action

 

[two4spooky]

It's a pin hole. Nearly invisible unless you remove the rubber diaphragm and stretch it.

Unstretched
View attachment 446437



Stretched
View attachment 446438

Yeah, that looks about like what I remember mine being. More like a small tear in the middle but not perfectly centered.

 

[two4spooky]

@F6Hawk, you sure do take a lot of pics while tinkering. That's a good thing

 

[two4spooky]

I don't know , bit this grease thing with gx is something they really need to clear up and give good maintenance instructions . So many ask or in the dark on this ..

Language barrier, US distributor not the manufacturer, probably different metrics used in CN(NLGI?) and low cost per unit... I'm not holding my breath. Some things we may have to figure out with group think(forums) and trial & error.

 

[F6Hawk]

Having taken my CS4-I apart today, I can safely say that the grease in the pot is synthetic (perhaps silicone?), much thinner & translucent white, as opposed to the NLGI 2 used in the crankcase area where metal-to-metal is happening.

 

[Grassguy12200]

Yes the hole is very small. But I opened mine up with a large pin. It seems to work great.

 

[F6Hawk]

@F6Hawk, you sure do take a lot of pics while tinkering. That's a good thing

I live to serve!

 

[Hateful McNasty]

It's a Food grade synthetic..

 

[Hateful McNasty]

I live to serve!

A pictures worth a 1000 words.

 

[MikeAllen]

I've got about 40 hours or so on my CS-4, but recently I noticed it's sounding a little different. I checked the grease pot and after cleaning it out I can't really see a hole in the rubber gasket. There's a slight indent in the center when the hole should be. Is this hole supposed to be visible to the naked eye, or is it a tiny little pin hole that closes up unless it's under pressure.

View attachment 446433