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Forums › Marker Talk › Problem/Tech forum › 2k bushmaster and 2k4 bko troubleshooting

2k bushmaster and 2k4 bko troubleshooting
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robinhood1143
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PostPosted: Mon Dec 01, 2014 2:54 pm    Post subject: 2k bushmaster and 2k4 bko troubleshooting

Ok, bushmaster first. At first, I pull the trigger and it fires, then I release the trigger and it fires again. Then, I pull it a second time and it DOESN'T fire, but when I release it the second time (and every subsequent time), it fires. I'm guessing electronics or wiring, but wanted to have a small idea before I take the thing apart.

Second is the Bko (std). When I gas it up, the bolt doesn't slide back to allow a ball to drop into the chamber. The hpr displays 225 psi. The electronics sound fine (it blinks when I pull the trigger), which is better than the bushmaster above.

Thank you so much for checking this and any help you can give.
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Martix_agent
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PostPosted: Mon Dec 01, 2014 3:13 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

On your BKO, it sounds like your LPr isn't working properly, or that it is not set to a high enough PSI

the Bushmaster sounds like it has an electrical issue. I would check the wiring connections and make sure that the switch is wired properly.

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homerj
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PostPosted: Mon Dec 01, 2014 4:14 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

I believe the bko (being a fasor) used a spring to hold the bolt/ram back, not lpr air. It's been a long time since I took one apart so I forget how exactly the spring is in there but that's where I'd start.
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Nobody
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PostPosted: Mon Dec 01, 2014 4:28 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

For the BKO, its Forward Air Spring On Return (FASOR). So, if the bolt is not moving upon airing it up, its the LPR. Take it apart, and relube it. Then set the pressure accordingly.

For the Bushmaster, it's either something in the wiring, i doubt it was wired wrong, but the microswitch might be giving out(being worn out) or broken so that you are only activating it on the initial pull but not any others. Turn it on without air, see if the LED blinks with each trigger pull.

If it's not a electronic problem, then reset the LPR. It could be too low and not resetting the ram back.

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Crash1976 wrote:
if it was an LCD I was going to make a VooDoo doll of you and stab the 5h!t out of you for swapping boards... but no LCD, so swap away. Cuz you were gonna be all rolling on the floor n' scream'n n' 5h!t... you wer're gonna be like "ah gods!...what have I done!!" and I was gonna be like "take that you eclipse bastardizing piece of fecal matter!"
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robinhood1143
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PostPosted: Mon Dec 01, 2014 6:02 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

Thank you, I'll look at the LPR in both cases.
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robinhood1143
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PostPosted: Tue Dec 02, 2014 2:05 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

UPDATE!

Ok, I adjusted the lpr on the BKO until I heard it start leaking. That did the trick in pushing the bolt back, BUT, I couldn't get the it to stop hissing/leaking without sufficient pressure on the bolt to push it back. Most likely lube and o-rings. easy cheesy.

The bushmaster is most likely electronics. I turned it on without air and the same trigger pull problem. I'll tackle that after the bko.

THANK YOU, so much, for all your help, everyone! It was so awesome to see not only one but 3(!!!) replies so quickly.
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Nobody
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PostPosted: Tue Dec 02, 2014 6:00 pm    Post subject: Re: 2k bushmaster and 2k4 bko troubleshooting

If you can't figure it out, you can send it to me. I am better at B2Ks as i have never had any experience with BKOs.

As for the hissing, you want to set the LPR pressure. Zero it out, then increase till the bolt moves back, then a quarter turn more should get you were it will shoot but not hiss(the hissing is too high pressure for the noid).

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Crash1976 wrote:
if it was an LCD I was going to make a VooDoo doll of you and stab the 5h!t out of you for swapping boards... but no LCD, so swap away. Cuz you were gonna be all rolling on the floor n' scream'n n' 5h!t... you wer're gonna be like "ah gods!...what have I done!!" and I was gonna be like "take that you eclipse bastardizing piece of fecal matter!"
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