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Old 02-11-2015, 08:25 AM #1
Papa B
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Need confirmation please

Ok I'm working on a ST E1 Autococker and the previous owner failed to inform me of all the problems it's having. I've got all figured out except the air venting out the QEV's. I think the hoses may be installed wrong off the solenoid and having a brain fart on the proper sequence. Could someone please enlighten me on the order of which the hoses go starting from the first one closest to the frame? Thanks
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Old 02-11-2015, 09:32 AM #2
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If it's leaking out of the QEV it's either the diaphragm or your LPR is too high and it's venting from the solenoid. Perhaps when the hose was put on it was knicked and there's a pinhole venting in the line itself.

Though it should be front barb, front of ram, rear barb to rear of ram, and middle barb to LPR.
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Old 02-11-2015, 09:35 AM #3
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Closest to frame on ram --> rear solenoid barb
LPR --> middle offset solenoid barb
Furthest from frame --> front solenoid barb

are the QEV's permanently venting or just when the ram cycles?

If they're permanently venting, it could be 2 things:
non-pressurized side venting --> bad ram o'ring
pressurized side venting --> bad diaphragm on QEV

If they only vent when cycling, that's normal.
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Old 02-11-2015, 11:13 AM #4
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It's spraying air as soon as I turn it on down the breech and coming out of the back of the QEV's. Can't get it to fully cycle.
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Old 02-11-2015, 11:46 AM #5
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Cocked before airing up? If so, then probably a valve issue and a bad ram o'ring.
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Old 02-11-2015, 11:47 AM #6
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Yes cocked it before air up.
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Old 02-11-2015, 11:48 AM #7
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The valve is purple and a separate cup seal for the poppit. Never seen one like that.
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Old 02-11-2015, 12:06 PM #8
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Shocktech rat valve, the issue will probably be the valve o'ring. Fix the valve first and then worry about the ram.
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Old 02-11-2015, 12:12 PM #9
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Originally Posted by tacxplosion View Post
Shocktech rat valve, the issue will probably be the valve o'ring. Fix the valve first and then worry about the ram.
Ok thanks bud!
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Old 02-13-2015, 07:13 PM #10
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So out of all of the leaks this thing has I've gotten down to 3 now. Gotta leak down the breech which I think is from the cup seal but can't find a replacement for the rat valve. There's a leak coming from the front of the lpr adjuster screw. That ones actually new to me and the last leak is from the soleniod manifold.
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Old 02-13-2015, 08:17 PM #11
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Front of the LPR leak = piston o-ring
QEV/ram leak = make sure they have the the barb on the correct side of the QEV, if that's an option. Clean, and lube the QEV diaphragms, also check the ram piston o-ring.
Barrel leak: Flip the plastic washer on the front of the valve, and replace the valve body o-ring. Gas it up at 500 psi or so to help seat the cup seal on the new surface, then lower it to tune.
Noid leak: Clean and lube the noid, and check the o-rings closely for damage, or degradation. Also replace the gasket while you're there.
Some of those leaks can be interconnected. A blown noid can cause a QEV leak, the same way a bad ram piston seal can, and a leaking LPR can cause a noid leak. Take care of the valve first, then the LPR, then the noid.
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Old 02-13-2015, 08:20 PM #12
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Front of the LPR leak = piston o-ring QEV/ram leak = make sure they have the the barb on the correct side of the QEV, if that's an option. Clean, and lube the QEV diaphragms, also check the ram piston o-ring. Barrel leak: Flip the plastic washer on the front of the valve, and replace the valve body o-ring. Gas it up at 500 psi or so to help seat the cup seal on the new surface, then lower it to tune. Noid leak: Clean and lube the noid, and check the o-rings closely for damage, or degradation. Also replace the gasket while you're there. Some of those leaks can be interconnected. A blown noid can cause a QEV leak, the same way a bad ram piston seal can, and a leaking LPR can cause a noid leak. Take care of the valve first, then the LPR, then the noid.
Thanks bud! I had to walk away from it for a moment and gather my thoughts before I had a temper tantrum.
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Old 02-14-2015, 08:00 AM #13
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Thanks bud! I had to walk away from it for a moment and gather my thoughts before I had a temper tantrum.
And that's exactly why I quoted a month to do a total rebuild. That gave me plenty of time to put a gun down, walk away for a day, and not throw something through the wall. Sometimes a little distance, and a day to mull things over is the best solution.
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Old 02-14-2015, 08:01 AM #14
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And that's exactly why I quoted a month to do a total rebuild. That gave me plenty of time to put a gun down, walk away for a day, and not throw something through the wall. Sometimes a little distance, and a day to mull things over is the best solution.
Hahaha!!
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