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Old 07-28-2008, 12:45 AM   #1 (permalink)
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BE Nightmare Valve

Ive read in various places online that to remove the nightmare's valve you drop a dowel rod down the barrel and "convince" it out the back. A quick test proved the valve to be stuck good. I removed all the set screws, seems like time to break out the mallet but I would like to make sure I am not doing something terribly wrong. Since I have yet to open up the gun since I bought it, Id like to give the gun a good cleaning before I sent it off.
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Old 07-28-2008, 12:51 AM   #2 (permalink)
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Hopefully degunking it will give it more than 19 shots to a 12g!
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Old 07-28-2008, 07:41 AM   #3 (permalink)
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The mainspring was way too long also, trimming that will get it shooting <300 (hopefully)
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Old 07-28-2008, 08:54 PM   #4 (permalink)
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As I recall there was a set screw under the grip that was for the valve as well as the ones on the sides.
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Old 07-28-2008, 10:02 PM   #5 (permalink)
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Thanks for the response. I got that one too, sounds like Im not missing anything. Time for a trip to the hardware store.
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Old 07-28-2008, 10:04 PM   #6 (permalink)
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You probably need the special valve tool (kinda like a screwdriver with a slot in the middle for the valve pin) to get it out, I'm having a similar issue with my SB Comp.
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Old 07-29-2008, 10:15 PM   #7 (permalink)
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A tap with a 5/8 dowel and a mallet and the valve popped right out. A little elbow grease to rub the gunk off the internals and the pump stroke is smoooooth

A word to the wise, be very careful when removing the assembly in the top tube. Too much force and you risk forcing the o-rings into the threaded portion, tearing them to pieces. Luckily for us all a complete seal kit from rcpaintball is only 15 bucks
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Old 07-31-2008, 09:34 PM   #8 (permalink)
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You can go to vintagerex.com and print off a full exploded view. Very helpful! I highly recommend it to anyone who has one of these guns.
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Old 07-31-2008, 09:39 PM   #9 (permalink)
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i put the screw back in the bolt and just force it backwards. once the valve starts to move i remove the bolt and put a hex wrench in the cocking slot and push it backwards (the side of the hex wrench is laying along the face of the bolt)

i just tore down 2 nightmares and a cobra doing it this way.

to remove the brass nut. i took some bent nose pliers (chi-com) and ground the tips to fit in the slot.

bent nose pliers
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Old 07-31-2008, 10:16 PM   #10 (permalink)
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Quote:
Originally Posted by DeTrevni View Post
Hopefully degunking it will give it more than 19 shots to a 12g!
If by degunking, you mean jenny craiging the hammer then we're in agreement Can we say hammer bounce ? Shot mine earlier this evening after swapping all the seals out (thank you rcpaintball ) with the barrel resting against my mattress to keep the noise down, and you get BANGbabababababang ..


You have to be careful when putting the valve back in as well, I've found the orings on the valve body want to pinch against the hammer lug's cutout .. some careful pressure with a pen or something equally blunt can ease them down enough to clear it.
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