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Old 01-25-2012, 11:57 PM   #1 (permalink)
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Dropout phantom leaking down barrel

Allright, I'll keep this as short as possible.


Bought a used phantom here 2 months ago, took it out of the box, aired it up, no leaks, shot fine (no paint).

Fast-forward 1 month, I took out to play, air it up, no leaks, chrono, 270-260-280-250-260 etc...

I grab my velocity ajusted, turn clockwise a small bit, pump a ball and a leak down to barrel.

Gun shoot 150-160 for 4-5 ball then doesn't shoot and leaks down the barrel.


Fast-forward another month, I disassemble it completely, check parts, oil the orings, slap it back together, air it up, leaks down the barrel, I shoot 4 times and then I can't pump it and it is still leaking.



Problem is I don't know what to look for.


Help please
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Old 01-26-2012, 12:00 AM   #2 (permalink)
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How far in do you have the TPC?
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Old 01-26-2012, 12:01 AM   #3 (permalink)
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sounds like a bad cup seal or the powertube and cup seal assembly are coming apart .
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Old 01-26-2012, 12:15 AM   #4 (permalink)
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Quote:
Originally Posted by Cnyberg View Post
How far in do you have the TPC?
Hmm TPC is the ajustment screw ? Can't really tell



I'll take pictures tomorrow
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Old 01-26-2012, 12:18 AM   #5 (permalink)
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If its in too far, it'll leak down the barrel when you pump the gun. That should be the only time it leaks. If it leaks without touching it, you probably have a sealing/oring problem.
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Old 01-26-2012, 07:09 AM   #6 (permalink)
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Cup seal in the valve assembly might be loose/damaged.

Take the drop out off. Undo the retaining nut. Unscrew the powertube and check the face of the cupseal. If it's ok add a drop of oil reassemble and try again.
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Old 01-28-2012, 10:03 PM   #7 (permalink)
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Allright i'm out of 12 grams i'm gonna buy some tomorrow but I finally managed to take a couple pictures, I had to wait for my dad to lend me his macro lens.

Anyway here are the pictures.



First, is it put together correctly ? This is how it was when it was leaking:





This isn't broken/cracked:



Everything seems normal here:



I was using the one on the left (SSC mod ?):



I was using the one the the left, this is what I turned (while in the bolt) to get higher FPS:



Bolt itself, I don't know how to little plastic hex adjuster should be, the one the this bolt (which I was using) is screwed a little deeper then my spare bolt:

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Old 01-28-2012, 10:52 PM   #8 (permalink)
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There's your problem. Your cup seal has come out of the brass cup seal thingamajig it is actually stuck on the threads of the power tube.

Try putting the cup seal back and ad a drop of oil and see how she works.
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Old 01-28-2012, 11:41 PM   #9 (permalink)
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You mean this ?




This was screwed in


EDIT: Or if you mean that the cup seal is the little plastic ring that fit's inside that brass part I don't see how it is ''Stuck'' since it is threaded on the power tube itself
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Last edited by Coastermaniac; 01-28-2012 at 11:44 PM.
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Old 01-29-2012, 12:37 AM   #10 (permalink)
ant
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Its supposed to be seated in the brass cup before you assemble it, thats the most likely problem. If it doensn't seat properly, it will always leak
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