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Old 08-01-2011, 11:57 AM   #1
Shrike
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Default CPS 1500 leaking

one repair down, two to go

my recently rediscovered (or newborn, dont know for sure ) cps 1500 seams to be leaking. ive taken it apart, which was quite a pain in the butt as nozzle cap just wouldnt come off. now that ive succeeded, i discovered that it seems to be leaking from the hole for the trigger pin, but only when i pull the trigger.


does somebody have an idea how to fix this (im guessing that i have to take apart the nozzle valve casing again, yay)?

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Old 08-01-2011, 02:33 PM   #2
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Default Re: CPS 1500 leaking

Seal is probably off or warped inside the valve.
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Old 08-01-2011, 05:23 PM   #3
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Default Re: CPS 1500 leaking

Have fun opening another pull valve. At least you will be experienced.
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Old 08-01-2011, 07:03 PM   #4
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Default Re: CPS 1500 leaking

i already got it apart. its a white one, so i only had to unscrew the screws and as soon as i put the box knife in the seam, it popped open.
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Old 08-01-2011, 08:12 PM   #5
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Default Re: CPS 1500 leaking

Nice. What was the problem? Is there some sort of O ring in the back of the valve to seal the rod?
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Old 08-02-2011, 04:49 AM   #6
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Default Re: CPS 1500 leaking

theres nothing there that comes close to looking like a seal....

outside:


inside:


ive no idea what to do

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Old 08-02-2011, 08:21 AM   #7
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Default Re: CPS 1500 leaking

Maybe that is your problem. It is odd that it is only when you pull the trigger. I would think it would be the ther way around. Maybe there is a small crack in the pin. Check it very carefully.
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Old 08-02-2011, 11:03 AM   #8
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Default Re: CPS 1500 leaking

it seems there is some kind of "sealing tube" around the rod inside the hole, and the water sprays from a gap between tube and plastic. sometimes when i push the rod up a little it wont leak.
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Old 08-03-2011, 06:00 PM   #9
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Default Re: CPS 1500 leaking

Try fitting your own "sealing tube" in the form of a replacement o-ring right at the end of the plastic, around the trigger rod. Epoxy the o-ring to the end of the trigger and you should have no more leaking problems.
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Old 08-05-2011, 10:26 AM   #10
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Default Re: CPS 1500 leaking

i think i kind of repaired it.
what should i use to completely seal the pull valve chamber again?
the screws seem to keep it together but after a few pumps it starts to leak a little.
i dont want to use epoxy, because i may want to open it again some time in the future
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Old 08-05-2011, 01:53 PM   #11
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Default Re: CPS 1500 leaking

A very, very thin bead of RTV silicone will work well.
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Old 08-13-2011, 04:46 AM   #12
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Default Re: CPS 1500 leaking

In fact there is a very small o-ring on the pin on the inner side. THis pin is pushed back by the big spring, which closes the valve on the one hand but also holds the small o-ring in places to seal the pin.

If this is not seal you can replace the small o-ring by a new one, or install another, a bit smaller o-ring just in fron of the original one to get a better seal. You can also install a STRONGER spring inside the chamber. More force on the o-ring will also stop it from leaking(in case the o-ring is ok and not ruined)
CLeaning the whole thing is also a good idea as there is dirt and other unnecessary things dumped over the years of using.

Try all this, be careful with using glue to not stuck the pin^^

THe fact that water is coming from the pin when the trigger is pulled can also mean that the "trigger-mechanism" is not straight anymore. My the metal stab that connects the trigger with the valve is courved a little or not on it's way, may it is out of it's direction ? The stab can be shaped with a little force, may this solve the problem too.

This is all you can do, I managed to get every pin-leaking solved and seal again, any of these tips wil help

Good luck!
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Old 08-14-2011, 03:50 PM   #13
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Default Re: CPS 1500 leaking

thanks for the advice GJ
but i already managed to solve the problem a week ago
right now im just trying to get the whole thing sealed again (actually i wanted to test the gun today but we were hit by a huge thunderstorm)
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