Q:

German cricket leaking again…

Hei guys, so i am back with a new leak, i think its the 2.
Indicator hole, cause theres some grease around it.
I changed all the o rings at the regulator but it is still leaking.
I dont know what else i could do, need some help.

Greatings from germany

Kalibrgun

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Viewing 5 replies - 16 through 20 (of 20 total)

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quote Marco.fiebelkorn:

I ordered the 2 small o rings 1 hour ago, nbr70 4x2mm.
Its slow leaking 7 days fro 250 bar to 50 bar.
Could it damage the cylinder if i put it under water, to see where it leaks?

Yes you can use plan water no soap, but if water get inside of the gauge it will take days to dry out but the valve end you can.

I’d first check if it leaks from the 3 indicator holes first.
Then I’d use a balloon and rubber band it tightly on on the muzzle to check if it’s leaking from the valve if it fills up.

To check if a leak is coming from the front AT gauge end.
Insert the fill probe only (without the hose connected) into the fill port, fill the probe end with water to check the small fill O-ring valve.
If it doesn’t leak from there then it’s the gauge O-ring that is leaking.

The 2nd indicator hole on the AT is the hardest to figure out, it could be any one of the 4 reg O-ring that is leaking.

Usually it’s the high pressure side large O-ring (the one closest to the front gauge) on the outside of the reg or the smallest one on the inside piston.
If it’s hard to stop the leak on the high pressure side you could use a harder O-ring then a A70 on both ends, like a A90 but don’t use them on the inside.
The smallest one on the inside of the reg piston which is the hardest one to change and is the one that’s works the hardest, most worned.
The second smallest one on the inside of the reg piston usually causes poor or inconstant crony results and can cause a leak also.

All in all when it come to the reg, if you going to go in there I’d change ALL 4.
Also note that you need to take very good measurements of the reg settings before going inside or get a reg tester …..

~ Greg

quote GKU:

Just a little lube around this 2nd hole doesn’t always mean it’s leaking there.
You need to confirm where the leak is before trying to fix the problem, it could be someplace else.

Like DoktorKAR said the gauge O-ring, it could be the valve and fill o-ring too ?
Let use know, there are specific ways to leak test for each ………. I should post a tread for this.

Test by using a bit of spit on it to see, if the bubble grows larger then it’s leaking.

Questions:
Did you changed all 4 O-rings on the reg, the 2 small inside and 2 large outside ?

~ Greg

That would be great if you could post a tread for this.

When i filled the cricket to 250 bar today, the first shots where to low, 4 mil down.

I ordered the 2 small o rings 1 hour ago, nbr70 4x2mm.
Its slow leaking 7 days fro 250 bar to 50 bar.
Could it damage the cylinder if i put it under water, to see where it leaks?

Just a little lube around this 2nd hole doesn’t always mean it’s leaking there.
You need to confirm where the leak is before trying to fix the problem, it could be someplace else.

Like DoktorKAR said the gauge O-ring, it could be the valve and fill o-ring too ?
Let use know, there are specific ways to leak test for each ………. I should post a tread for this.

Test by using a bit of spit on it to see, if the bubble grows larger then it’s leaking.

Questions:
Did you changed all 4 O-rings on the reg, the 2 small inside and 2 large outside ?

~ Greg

Gauge oring

Sent on the go from my pocket.

Viewing 5 replies - 16 through 20 (of 20 total)

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