Sumatra stripdown

[WILBA]

Woes continue with the sumatra. Thought it was weird the gun had zero pressure when i pulled it out of the cabinate. After renewing hammer spring i filled her up. As sson as i udid bleed screw the gun emptied its guts again. Next job to replace the seals. Being pressure locked for so long looks like the seals have blown

[Shed tuner]

Woes continue with the sumatra. Thought it was weird the gun had zero pressure when i pulled it out of the cabinate. After renewing hammer spring i filled her up. As sson as i udid bleed screw the gun emptied its guts again. Next job to replace the seals. Being pressure locked for so long looks like the seals have blown

Where is it leaking from ? They are not really hard to work on, once you have have the extra long blad bladed screwdriver valve removal tool. But if it's only leaking from the cylinder ends, the valve can stay put...

[WILBA]

Dont know whats gone john. As soon as i turn the bleed screw on dive bottle its dumping all pressure from the gun out through the bleed.

[tinbum]

Put a dab of silicone oil/gease in the filler holes, crack the bottle open on sharply and try to bleed as sharp as poss too. This may fix it.

[Shed tuner]

Dont know whats gone john. As soon as i turn the bleed screw on dive bottle its dumping all pressure from the gun out through the bleed.

ahh - that's different - non- return valve in the filler. Fill it muzzle down, that often does the trick and tap it a bit to settle the flap valve. Also bleeding rapidly also helps the air rush blow the valve back down to seal

If you do end up stripping, you can put a little spring under it to hold it closed in any position.

[WILBA]

Ok. Did as you both said and it worked. Still though why did the gun empty itself when it was pressure locked? Was pressure locked for last 5mths until i found a tidy hammer spring and the guts to have a go. Thanks for the advice both. And tinners thanks for the info on how to change the valve. Much appreciated. Show not over till the fat lady sings though. Lets see if she hold pressure over the next week or so. Cheers guys. Chris

[Shed tuner]

Ok. Did as you both said and it worked. Still though why did the gun empty itself when it was pressure locked? Was pressure locked for last 5mths until i found a tidy hammer spring and the guts to have a go. Thanks for the advice both. And tinners thanks for the info on how to change the valve. Much appreciated. Show not over till the fat lady sings though. Lets see if she hold pressure over the next week or so. Cheers guys. Chris

NP, good luck. AS said though, not too tough to work on really, so even if you do need to dig later, it's fine....

[WILBA]

I have a full strip down dvd for the 707. And there is a seal replacement video on utube on how to change the seals. I learned a bit today changing the hammer spring.