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Old 07-20-2014, 09:41 PM #1
Clayton1O57
 
 
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insane leak on PM5

alright so i pulled out my old proto and replaced all of the o rings on the bolt. there was a leak out of the back of the bolt and down the barrel. so i replaced the o rings (the stickies say to replace) again and it did not leak at all. i went to chronograph the gun and it shot great over the it (shooting one ball at a time so i got a reading). all +/- 3-5 just over 290. i had a full hopper and slowly shoot about 3/4s of it with no issues at all. with the little paint i had left i decided to shoot a few ropes and then BAM the gun just went crazy it started leaking from the barrel and out of the back of the bolt and i just have a stock dye airport with no on off and it blew out the oring on the tank and my 45/45 was empty in about 5 sec. i have not opened up the gun yet to see what orings are gone on the bolt yet but im sure there all pretty trashed.

judging by the manual i have my lpr set to 75-80 and i just rebuilt my cp reg aswell. i have no clue whats going on the tank is fine i was able to run it on my other guns today with no issue

any advice?
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Old 07-26-2014, 08:42 PM #2
Influence-Ebola
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I bet it is one of the o rings on the bolt. Check for damage and try again. Make sure the board is on default when you tune it then make small changes if needed.
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Old 07-29-2014, 09:46 AM #3
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i will try to change them again but i am using ALL buna orings on the bolt and lpr, could that be my problem? do you think it could have anything to do with my dwell? i just do NOT think the orings are the issue because i have changed them out at least 3 times. unless it is the quality of the orings.
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Old 07-30-2014, 06:44 PM #4
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I had a bad leak out of my bolt a little while ago, too. I also checked the stickies & replaced the stem o-rings as the sticky recommended. Pointless. It ended up being the bolt sail. It looked okay at first glance. But I replaced it anyway. That stopped the leak right away. Replace yours. It may look good upon initial inspection. Just replace it anyway.

Are you sure you're using 100% Buna o-rings? Most are. But the inner tophat & can o-rings are urethane. I had one of those replaced recently as my bolt wasn't sliding back & forth smoothly. I've never personally taken my LPR out. I'd have to check the manual to see what they use & where.
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Old 07-30-2014, 09:25 PM #5
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check my sig... it's cheap... it sounds like your hpr is over pressuring...... causing the 013 tophat to blow
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Old 08-12-2014, 10:19 AM #6
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Quote:
Originally Posted by grss429 View Post
check my sig... it's cheap... it sounds like your hpr is over pressuring...... causing the 013 tophat to blow

you are right about the 013 but it just keeps shooting out of the gap it goes in. I appreciate the offer but I'm just messing around with an old gun first time i pulled it out in 10 years, its not like i need it to play.
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Old 08-12-2014, 10:24 AM #7
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Quote:
Originally Posted by AlmightyRuler View Post
I had a bad leak out of my bolt a little while ago, too. I also checked the stickies & replaced the stem o-rings as the sticky recommended. Pointless. It ended up being the bolt sail. It looked okay at first glance. But I replaced it anyway. That stopped the leak right away. Replace yours. It may look good upon initial inspection. Just replace it anyway.

Are you sure you're using 100% Buna o-rings? Most are. But the inner tophat & can o-rings are urethane. I had one of those replaced recently as my bolt wasn't sliding back & forth smoothly. I've never personally taken my LPR out. I'd have to check the manual to see what they use & where.

yes i am using 100% buna or rings. thats one of my questions and hopefully my issue is. thats what i ment by ALL BUNA ORINGS. every single one of my orings on the bolt and lpr including the ones that dye says to use the urethane. ill get the urethane ones and try to see if that works, if not then ill try a diffrent bolt.
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Old 08-24-2014, 06:04 PM #8
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i thought lpr being too high is what causes the 13 to blow, no?
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Old 08-26-2014, 06:06 AM #9
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Quote:
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i thought lpr being too high is what causes the 13 to blow, no?
lpr would be too low, then having the hpr too high would cause the tophat oring to blow.
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Old 08-26-2014, 05:09 PM #10
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swaped out number 13. dropped lpr back to zero(25psi i think flush is) than moved 4 turns out and dropped cp reg back to zero turned up my cp half turn still had leak out of the back. swapped out the 2 #9 orings for #10 and leaks are gone. i am gettting some first shot drop but im guessing that is just due to using a low pressure tank(only tank with air). hopefully i can test it out this weekend with some paint.

Last edited by Clayton1O57 : 08-26-2014 at 05:50 PM.
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Old 09-04-2014, 06:02 PM #11
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worked great small leak at the macro elbow but a little tiwst and it was gone. aired it up with my hp tank and no leaks no first shot drop no issues at all

thanks for the help guys
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