hw100 leaks

[formo.s.]

Hi could any hw100 owners tell me if you had air leak from quick fill end of tube its just that this is my second hw100 to leak from same place maybe iam just too heavy handed with filler probe thanks. steve

[Dirty-Harry]

Have you looked for a strip down guide on the BBS? There are loads of them on there.

[airgunalex]

Ask Rhysduk on here he has had a problem with his, it involved getting a new o ring and replacing it

[Dirty-Harry]

Speaking of 'O' rings: I can't verify the ultimate quality but, my local £ shop have been recently selling a box with dozens of the blighters in it in various sizes and forms (circular, flat, metal reinforced). On spec I bought a box and have only really used a couple in lesser pressure situations - up to 15BAR.
In most cases this shouldn't matter much as they are just there to 'fill the gap' between two mating parts - especially if it sits in a groove.

[Dirty-Harry]

Oops! I tell a lie.

I used a couple to seal the end caps on two air/hydraulic suspension spheres filled to just over 1,000 psi.
No leaks!

[baldycoot]

My wife's HW100 was leaking from the quick fill and causing pressure behind the plug making it very hard to remove.
After returning the cylinder to the RFD, and waiting four weeks, it was ok for a few months then same thing.
So I stripped it down myself and found a fine white powder inside the cylinder, which is either a naturally occuring result of compressed air or, possibly something to do with the air drying beads in the pump. I cleaned it out, but found that it needed some light grease to fully seal it.
I now do this as a regular part of the cleaning routine and it has not been a problem since.

[formo.s.]

Thanks everyone for your help i sent it back to hull all fixed now the leak was down to my pump as hull said an thay were right i realised when i use my bottle it did not happen.The problem was that i have had the pump for about 7or8 years without it being serviced i took it apart and the s**t that was in there to think i was puttin that in my cylinder no wonder it leaked 2nd time in 2 months so thanks to hull fixed it an sent back in a week.

[formo.s.]

Originally Posted by baldycoot

My wife's HW100 was leaking from the quick fill and causing pressure behind the plug making it very hard to remove.
After returning the cylinder to the RFD, and waiting four weeks, it was ok for a few months then same thing.
So I stripped it down myself and found a fine white powder inside the cylinder, which is either a naturally occuring result of compressed air or, possibly something to do with the air drying beads in the pump. I cleaned it out, but found that it needed some light grease to fully seal it.
I now do this as a regular part of the cleaning routine and it has not been a problem since.

Hi baldycoot when you say light grease to seal do you mean the inside of the pump were the beads are because when i took mine apart the beads where full of oil probably down to me oiling things that i should`nt so should i put grease in there instead sorry mate if i am if iam missing something thanks.steve

[baldycoot]

Originally Posted by formo.s.

Hi baldycoot when you say light grease to seal do you mean the inside of the pump were the beads are because when i took mine apart the beads where full of oil probably down to me oiling things that i should`nt so should i put grease in there instead sorry mate if i am if iam missing something thanks.steve

Sorry for the delay in responding but I have been out of the country.

You don't normally oil the pump, as this can cause the beads to get covered in oil and stop them from absorbing any moisture.
If there is any oil or grease coating the beads then they need to be thrown away, and the inside of the bowl cleaned with something like washing up liquid to remove any residue.

The pump just requires a light smear of a grease like vaseline on the moving parts to allow the thing to work properly and to maintain the seals.

The bit I oil/grease is the quick fill part of the air cylinder on the rifle, but you need to know what you are doing with it.
There is an exploded diagram in the manual which explains how to strip it down and which parts (seals) may need to be replaced from time to time.

A simple tip to save money.
If you have been using the dry pak filter for some time, or you live in a damp area, you can remove any moisture from the beads by putting them in a hot oven, but not too hot (about 100 degress), for about 10 minutes.
I wrap them in tin foil with a small opening in the top whilst they are in the oven, then I seal them immediately when I take them out and allow them to cool fully before I re-use them.

When you are using the pump you need to make sure that it does not get hot, which it will do if you try to pump too fast, I normally give it ten pumps then rest for a minute (helps you to catch your breath as well).
If it gets hot it can burn the seals and it can also cause moisture to form, which will cause problems in your rifle air cylinder.
.
ATB

[formo.s.]

Thanks everyone for their help sorted nowgreat.steve