Pump mag leak

hockeytown · 05-20-2008, 08:09 PM

My pumpmag leaks down the barrel after being shot. It stops when I recock it. I replaced all the on/off orings but no luck.

Any help?

Dewok82 · 05-20-2008, 09:25 PM

I'm assuming it has the Level 7 bolt. Try replacing the powertube o-ring. Also, make sure your bolt spring isn't worn (it should extend past the face of the bolt).

hockeytown · 05-20-2008, 10:02 PM

It has an ANS Phase II bolt, and has a fresh bolt spring. I already replaced the powertube o-ring, and I tried different powertube spacers but it didn't work.

flyingpootang · 05-23-2008, 01:30 AM

Check your trigger rod and on/off pin length

Motorhead · 05-23-2008, 02:03 AM

I have found the BOLT makes a MAJOR difference in how my classic pump mag operates.
Only bolt that works consistent is a factory AGD level 7 bolt.
My 32* venturi bolt does not seal up the same each shot and also recocks a LOT harder.

hockeytown · 05-23-2008, 08:00 AM

I tried a L7 bolt and it still leaked.

hmudd13 · 05-23-2008, 08:11 AM

I had that problem with mine, and after changing valves, bolts, orings........... it turned out to be nothing more than the frame bolts were too tight. Either the one in front or back, can't remember.

hockeytown · 05-26-2008, 10:01 AM

I took the pump kit off and it shot fine. What piece for the kit do I need to make it function properly?

Rainman229 · 06-02-2008, 02:52 AM

Have you tried it with an older bolt spring. Some guys need to cut the springs down to get them to work right. I found some kits are hit or miss with certain valves. Some work fine as they work as semi. But other need tinkering.

Brewtt · 06-02-2008, 09:40 AM

My team has 4 pump mags now. I have two Rainman pump mag and my team mate ajnin has two AGD pump mags. Here is how we have been running our pump mags to alleviate power tube and barrel leaks and semi shooting with the pump kits installed:

The way we have been fixing the carrier leak is take the carrier out of the power tube, remove the o-ring from power tube, put .220 CARRIER IN FIRST (the INCORRECT way to assemble the power tube) and THEN put in the o-ring. This has stopped all our carrier leaks and the pump mags function GREAT when the carrier and o-ring are in reverse locations.

It stopped our carrier/power tube leaks and gives a little more resistance at the end of the bolt cycle and helps the wave spring not let the sear re-engage!

So... in essence... build your power tube INCORRECTLY(switching .220 spacer and power tube 0-ring) to get it working great. All mine are rocking well. I used it ALL DAY yesterday playing up here with Hurt Cow. Great day.

05-20-2008, 08:09 PM	#1 (permalink)
hockeytown Never Forget Join Date: Jul 2007 Location: Michigan Posts: 915	Pump mag leak My pumpmag leaks down the barrel after being shot. It stops when I recock it. I replaced all the on/off orings but no luck. Any help? __________________ My feed back http://www.mcarterbrown.com/forums/f...-feedback.html

05-20-2008, 10:02 PM	#3 (permalink)
hockeytown Never Forget Join Date: Jul 2007 Location: Michigan Posts: 915	It has an ANS Phase II bolt, and has a fresh bolt spring. I already replaced the powertube o-ring, and I tried different powertube spacers but it didn't work. __________________ My feed back http://www.mcarterbrown.com/forums/f...-feedback.html

05-23-2008, 01:30 AM	#4 (permalink)
flyingpootang Active Member Join Date: Nov 2006 Posts: 208	Check your trigger rod and on/off pin length __________________ "I'm so bad I can walk on water, eat bullets, and poop ice cream".

05-23-2008, 02:03 AM	#5 (permalink)
Motorhead Seasoned Member Join Date: Jun 2007 Location: Northern California U.S.A. Posts: 617	I have found the BOLT makes a MAJOR difference in how my classic pump mag operates. Only bolt that works consistent is a factory AGD level 7 bolt. My 32* venturi bolt does not seal up the same each shot and also recocks a LOT harder. __________________ Older & Slower ... But well armed. Motorheads feedback

05-23-2008, 08:00 AM	#6 (permalink)
hockeytown Never Forget Join Date: Jul 2007 Location: Michigan Posts: 915	I tried a L7 bolt and it still leaked. __________________ My feed back http://www.mcarterbrown.com/forums/f...-feedback.html

05-23-2008, 08:11 AM	#7 (permalink)
hmudd13 Resident Marker Monger Join Date: Jul 2006 Location: Colorado Posts: 702	I had that problem with mine, and after changing valves, bolts, orings........... it turned out to be nothing more than the frame bolts were too tight. Either the one in front or back, can't remember. __________________ My wife keeps asking me why I need more markers?..........why does she do that? NO'MAAM #29 My Markers MCB Feedback AO Feedback Quoting WOLLFFY on AO; I don't recall mentioning trades, especially not for smart Farts. Thanks though.

05-26-2008, 10:01 AM	#8 (permalink)
hockeytown Never Forget Join Date: Jul 2007 Location: Michigan Posts: 915	I took the pump kit off and it shot fine. What piece for the kit do I need to make it function properly? __________________ My feed back http://www.mcarterbrown.com/forums/f...-feedback.html

06-02-2008, 02:52 AM	#9 (permalink)
Rainman229 A god in my own mind Join Date: Apr 2006 Location: nj Posts: 2,837	Have you tried it with an older bolt spring. Some guys need to cut the springs down to get them to work right. I found some kits are hit or miss with certain valves. Some work fine as they work as semi. But other need tinkering. __________________ Email lastone75@aol.com Making paintball fun again feedback http://www.mcarterbrown.com/forums/s...ght=rainman229

06-02-2008, 09:40 AM	#10 (permalink)
Brewtt CHEERS! Join Date: Mar 2006 Location: Northern California Posts: 4,113	My team has 4 pump mags now. I have two Rainman pump mag and my team mate ajnin has two AGD pump mags. Here is how we have been running our pump mags to alleviate power tube and barrel leaks and semi shooting with the pump kits installed: The way we have been fixing the carrier leak is take the carrier out of the power tube, remove the o-ring from power tube, put .220 CARRIER IN FIRST (the INCORRECT way to assemble the power tube) and THEN put in the o-ring. This has stopped all our carrier leaks and the pump mags function GREAT when the carrier and o-ring are in reverse locations. It stopped our carrier/power tube leaks and gives a little more resistance at the end of the bolt cycle and helps the wave spring not let the sear re-engage! So... in essence... build your power tube INCORRECTLY(switching .220 spacer and power tube 0-ring) to get it working great. All mine are rocking well. I used it ALL DAY yesterday playing up here with Hurt Cow. Great day. __________________ Dabbling in the recreational paintball arts since 1991.

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