Slow Leak?

This area is dedicated to the .22 caliber Benjamin Marauder by Crosman.

Slow Leak?

Postby PeashooterJoe » Fri Jan 24, 2014 8:41 am

New rifle (arrived with 1000 psi), pumped to 3000 and next day 500? Pumped up yesterday to 2000 and holding steady, where do I start looking for slow leak? Thanks in advance Peashooterjoe
PeashooterJoe
 
Posts: 4
Joined: Wed Dec 04, 2013 7:27 am

Re: Slow Leak?

Postby hill » Fri Jan 24, 2014 9:42 am

PeashooterJoe wrote:Pumped up yesterday to 2000 and holding steady Peashooterjoe


Is it new, or new to you. Factory new rifles usually don't leak (but is possible - call Crosman for a warranty repair), a used but new to you, who knows what was done to it before.

Since it's holding steady, you may want to wait. Maybe the O-rings are/have seated properly.

If it's still leaking down, you could try to find the leak by using a small diameter - piece of pipe or tubing. With one end held to your ear, place the other end to the fill nipple, gauge/gauge port area, open the bolt and check the barrel port, check at the back - inside the pressure tube cap (HT and HS adjustment point).

If you still haven't found the leak and as a last resort, check with a soap and water mixture (preferably using a sprayer or dabbing) for bubbling/bubbles. When finished, remember to remove any/all of the remaining solution and wipe the rifle with WD-40, Ballistol, or equivalent.

Depending on where you find the leak, you may have to (degas the rifle) reseal the gauge or fill nipple threads or replace the gauge; or replace the fill nipple's O-ring. If the leak is due to a; fill valve housing, gauge port, or valve body O-ring, you would have to disassemble the rifle (almost completely) to replace any of these, so you may consider going ahead and replacing all 4 of the #118 O-rings (7/8"I.D.x3/32"C.S.x1-1/16"O.D.), coat them with silicone before installing. If the leak is at the barrel port, you may have a piece of debris stuck between the valve/valve seat.
hill
 
Posts: 987
Joined: Wed Nov 21, 2012 1:50 pm

Re: Slow Leak?

Postby PeashooterJoe » Fri Jan 24, 2014 1:04 pm

New in box and thanks will try your suggestions..Peashooterjoe
PeashooterJoe
 
Posts: 4
Joined: Wed Dec 04, 2013 7:27 am

Re: Slow Leak?

Postby RayK » Fri Jan 24, 2014 8:02 pm

We have seen many of the recent on-gun pressure gauges leaking. September, I got a new P-rod with one of the newer gauges (without the Benjamin printed on it) and it started to leak after a few months. I swapped in a different gauge and it has not leaked since. I fill to 3000 and it stays at 3000 psi.

Ray
25 W-rod | 8 shots @ 70 FPE -2% | 3100 fill
25 M-rod | 40 shots @ 35 FPE -4% | 3100 fill
22 M-rod | 51 shots @ 25 FPE -4% | 3100 fill
17 M-rod | 60 shots @ 19 FPE -4% | 2500 fill
25 P_rod | 16 shots @ 28 FPE -4% | 2100 fill
RayK
 
Posts: 5371
Joined: Sat Jun 05, 2010 3:19 pm

Re: Slow Leak?

Postby Mrodsquirrelsniper » Mon Jan 27, 2014 9:45 am

My marauder is a year old and I had a leak develop. Actually a couple! Slight leak around the foster fitting and the gauge itself. I retaped the threads of both and it took care of that. I went ahead and replaced all the internal o-rings also. It's really kinda nice to take everything apart and learn how it all goes. After everything replaced it holds air great!
Mrodsquirrelsniper
 
Posts: 42
Joined: Wed Aug 21, 2013 4:54 pm

Re: Slow Leak?

Postby PCP_BigBopper » Sun Mar 15, 2015 10:45 pm

Hadn't shot my Marauder in a few months (winter), only to find all air pressure had leaked off. Refilled to 3000# nitrogen. Few days later, found all pressure had leaked off again. In the process of refilling again, @ 2500# I heard a very slight leak coming from the vent on the Marauder gauge, the indicator pointer was skewed off it's center pivot, then the lens popped out.

I was surprised that the gauge failed since the rifle was purchased new only six (6) months ago. Never mishandled and always stored in a padded case. Although, after removing the gauge, I found it to be cheaply made.

Decided to purchase a quality aftermarket gauge replacement, all is good now.
PCP_BigBopper
 
Posts: 2
Joined: Tue Aug 12, 2014 5:29 pm

Re: Slow Leak?

Postby RayK » Mon Mar 16, 2015 10:12 am

If Crosman paid $2 for each of those on-gun gauges, they paid too much. They are junk.

Ray
25 W-rod | 8 shots @ 70 FPE -2% | 3100 fill
25 M-rod | 40 shots @ 35 FPE -4% | 3100 fill
22 M-rod | 51 shots @ 25 FPE -4% | 3100 fill
17 M-rod | 60 shots @ 19 FPE -4% | 2500 fill
25 P_rod | 16 shots @ 28 FPE -4% | 2100 fill
RayK
 
Posts: 5371
Joined: Sat Jun 05, 2010 3:19 pm

Re: Slow Leak?

Postby Barnydaddy » Mon Mar 16, 2015 11:58 am

RayK wrote:If Crosman paid $2 for each of those on-gun gauges, they paid too much. They are junk.

Ray


Yep :lol:
Marauder Rifle, .177
Marauder Rifle,.25
Crosman 1720T
Crosman 2300KT
TX200 MKIII, .177
Beeman R1, .177
Tempest, .177
Blue Streak .20
RWS48, .177
Tempest .177
Red Ryder w/Rifleman Mod
Bug-a-Salt
User avatar
Barnydaddy
 
Posts: 673
Joined: Tue Sep 04, 2012 10:45 am
Location: Between San Francisco and Sacramento by Jelly Belly and Budweiser

Re: Slow Leak?

Postby Marauder .22 » Mon Mar 16, 2015 3:29 pm

Purchased my new marauder in November 2014. Lost air as well. Soapy water test around the gauge fitting resulted in bubbles. Removed gauge, used Teflon tape on the fitting and reset same gauge. Perfect. Emailed Crosman about the problem and they sent me a new one even though I didn't need it.
Marauder .22
 
Posts: 31
Joined: Wed Oct 15, 2014 12:16 pm

Re: Slow Leak?

Postby Bigtwin69 » Mon Mar 16, 2015 8:35 pm

sent my Synrod 25 back to PA and they sent back a new one 2 day shipping...a hassle to box it up but glad I did. Wish quality control would test more thoroughly.
User avatar
Bigtwin69
 
Posts: 50
Joined: Sun Jan 04, 2015 12:28 pm


Return to .22 Cal Marauders

Who is online

Users browsing this forum: No registered users and 6 guests