GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: vrotsos991 on July 29, 2012, 07:43:33 PM

Title: Marauder Fustrations
Post by: vrotsos991 on July 29, 2012, 07:43:33 PM
So as you guys know i been having this annoying slow leak of about 50 psi every hour since I got my gun. I sent the gun to crosman and came back with the same leak with the same leak rate. So i took my gauge block out and saw a nick on one oring. Replaced the oring and filled the gun up. Still the same leak rate. Rewrapped the gauge, and qc fitting. I also replaced the gage block to gauge adapter oring. SAME LEAK RATE.

What is going on here? If I cut the new oring when putting the block back in, i think it would be pretty hard to get about the same leak rate again. What should I do?
Title: Re: Marauder Fustrations
Post by: MustangMike on July 29, 2012, 07:55:19 PM
then its the valve orings
Title: Re: Marauder Fustrations
Post by: vrotsos991 on July 29, 2012, 07:56:23 PM
How rough is that to get to?
Title: Re: Marauder Fustrations
Post by: vrotsos991 on July 29, 2012, 07:56:44 PM
Any tutorial out there?
Title: Re: Marauder Fustrations
Post by: MustangMike on July 29, 2012, 08:00:55 PM
idk i dont own a mrod. surely it cant be that hard.. degas, remove  rear breech screw, 2 on each side of the breech, remove the shroud etc


your stripping it down to a completely bare tube
Title: Re: Marauder Fustrations
Post by: aack73 on July 29, 2012, 09:02:35 PM
it's not very difficult. pay attention to detail. ;D
Title: Re: Marauder Fustrations
Post by: Dead nuts dog on July 29, 2012, 09:15:45 PM
Hers the explode manual hope the link takes you there
Doesn't look to different from the disco in the air tube, you might want to check my post  titled " disco detention " where I was given a lot of help, that you may find helpful

http://www.crosman.com/pdf/manuals/1763%20and%202263%20EVP%20and%20PL%20update.pdf (http://www.crosman.com/pdf/manuals/1763%20and%202263%20EVP%20and%20PL%20update.pdf)
Title: Re: Marauder Fustrations
Post by: vrotsos991 on July 29, 2012, 09:18:41 PM
Hahaha I do. Just not familar with air rifles so I am not sure exactly where to start, and what I need to make sure needs to be done when re assembling.
Title: Re: Marauder Fustrations
Post by: MustangMike on July 29, 2012, 09:26:49 PM
make sure its degass and when sliding the valve and gauge block back into the tube make sure their lined up properly
Title: Re: Marauder Fustrations
Post by: PakProtector on July 29, 2012, 09:34:26 PM
There are all sorts of silly details involved here. Google will find several, say for example, if you take the filling plug out( the whole thing ) you unthread and then pull straight out, and of course reverse for instal; push all the way to the threads and then screw it in. You'll evidently cut the o-ring if you thead it out. You'll also need un-flamable divers grease to ease assembly. Use it sparingly needs said. That's just one...there are undoubtedly many. Read for a while, talk to somebody who'se done it if possible...better yet, have them over to guide you.
cheers,
Douglas
Title: Re: Marauder Fustrations
Post by: bnowlin on July 29, 2012, 09:45:31 PM
Did you call Crosman back?  I would and ask Lil Sis for help on the chat line tomorrow.  My leak turned out to be the fill check valve.  I degassed it completely and refillled and shot a wole magazine and the leak went away.
Bob
Title: Re: Marauder Fustrations
Post by: jpsgunworks on July 29, 2012, 11:03:33 PM
There's an excellent takedown guide on youtube http://www.youtube.com/watch?v=VIxXkIpS3ok#ws (http://www.youtube.com/watch?v=VIxXkIpS3ok#ws)  Hope
this helps.
Title: Re: Marauder Fustrations
Post by: GecoGuy on July 31, 2012, 02:03:16 AM
I had a leak in my disco. An easy way to check for it is put a drop or two of dish soap in a shot glass then fill it up with water and use a straw to apply to where the fill adapter is and the gauge. If there is a leak the soapy solution will lite up with foam! I think those are the only two external areas that could possibly be a leak. Another troublshoot is to put a balloon on the end of the barrel so its air tight and leave it over nite. If it fills up then you have narrowed the problem to something internal (i forget what exactly, someone else on here can fill in that blank for me).

These are just a couple checks you can do without having to guess where it is coming from and replacing things that don't need to be replaced.

My leak came from the gauge and it turned out there was NO teflon tape to seal the threads, so a quick 5 min repair fixed my problem, but it was the soapy solution that helped narrow down the problem.
Title: Dunk Tank Material
Post by: TimmyMac1 on July 31, 2012, 11:06:05 AM
I've had gauges leak thru the guage face. Sometimes you need to strip the entire gun down except valve and tube and charge it and dunk it under the water to see where the thing bubbles. If you overtorque the M-Rod gauges it can crack the internal tube and cause an annoying leak that is not oring reelated and very difficuklt to diagnose without a bathtub. Gauges are cheap. Buy one and replace it and your problem will probabaly diasaapear. The other issue we see is corrosion in the oring grooves of the valve body or gage block.