rohm twinmaster top leaking

[Jaguarplumber6]

Guys I have a rohm twinmaster top that's leaking, shots ok but 24 hours after full charge cylinder is empty. I have changed the cylinder seal with no luck anybody else have any ideas.

[john bailey]

Hi, PM magicniner on the umarex boys club forum, im sure he will be able to help.....

ATB John.

[Jaguarplumber6]

Thanks buddy

[bobt]

Could be the reg seal or the hammer valve. Try some soapy water or worst case dunk it in a bowl of water.

By the way magicniner is also on this bbs.

[magicniner]

If the cylinder holds air OK off the gun the firing valve seat is the most likely area for a leak.
A full strip, clean and relube of the firing valve may well sort it unless a seal has physical damage, stripping, cleaning & relubing the reg is worth doing whilst the pistol is apart.
Clean all components thoroughly and lightly coat only the O rings with silicone grease,

- Nick

[bobt]

If the cylinder holds air OK off the gun the firing valve seat is the most likely area for a leak.
A full strip, clean and relube of the firing valve may well sort it unless a seal has physical damage, stripping, cleaning & relubing the reg is worth doing whilst the pistol is apart.
Clean all components thoroughly and lightly coat only the O rings with silicone grease,

- Nick

And Nick forgot to say be very very carefull not to cross thread the firing valve nut !!! We have both had experience of that one...

[magicniner]

And Nick forgot to say be very very carefull not to cross thread the firing valve nut !!! We have both had expience of that one...

I'm very pleased to say that both my experiences of crossed threads were after the deed had been done
I strongly suggest that anyone not confident of their abilities in stripping & rebuilding seek assistance, it's easy to scrap a frame if you make incorrect assumptions,
ATB,
Nick

[bobt]

I'm very pleased to say that both my experiences of crossed threads were after the deed had been done

Ditto.....

[shovelchop81]

Guys I have a rohm twinmaster top that's leaking, shots ok but 24 hours after full charge cylinder is empty. I have changed the cylinder seal with no luck anybody else have any ideas.

Hi! Can you please do me a huge favour and tell me how you got the cylinder apart? Mine's leaking and the filler end is on so tight I'm worried I'm going to break something! It has two 'dead end' holes so I've been trying to unscrew it using both angled pinpoint pliers and the combo Allen key trick. Obviously I can't lubricate it thanks to the ' big bang' effect/result of oil with PCP cylinders. Thank you! P.s. I can't find a parts diagram for a Room Twinmaster PCP cylinder anywhere.