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Old 01-03-2019, 11:00 AM   #1 (permalink)
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Trilogy won't cycle.

bought a used trilogy and it holds air without leaks. I can pull the cocking rod back and fire it once and it feels like it's a good shot's worth of air. But it won't re-cock.

I thought it might be an output pressure issue from my tank so i swapped out the stock reg for a max flo and opened it up, still same behavior. While i'm not sure what springs i have on my tank right now, Immortal only goes as low as 450.

where should I be looking to troubleshoot?
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Old 01-03-2019, 11:04 AM   #2 (permalink)
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Lpr pressure? Cant remember how trilogy lprs where adjusted or if they even have one.
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Old 01-03-2019, 11:12 AM   #3 (permalink)
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Yeah. I had that thought from my old cocker days, but this one doesn't look to be adjustable at all.
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Old 01-03-2019, 11:23 AM   #4 (permalink)
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The LPR is adjustable. Remove it, look in the back, and you should see a screw. Twist inwards to lower pressure, and back out to raise pressure.
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Old 01-03-2019, 11:24 AM   #5 (permalink)
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First i would pull the cocking rod to cock the marker and see if the sear will trip. If then gun shoots when you pull the trigger then your issue is the lpr.

the lpr is internally adjustable. if you unscrew the front and look inside you should see a flat head screw. small adjustment out should increase the pressure. i would say 1/4 turn at a time should be enough to help you dial it in.
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Old 01-03-2019, 11:26 AM   #6 (permalink)
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By recock do you mean it isn't moving the block at all or it isn't moving back with enough force to catch? An easy way to tell if it isn't enough force is to pull and hold the trigger. Hold onto the cocking rod and release the trigger. If you let go of the rod and it goes forward you need to adjust your lpr. If it catches you need to make your hammer lug stick down more to catch the sear.
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Old 01-03-2019, 11:42 AM   #7 (permalink)
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The ram doesn't move the back block at all. but moves freely by hand.

I had no idea about the internally (wtf?) adjustable lpr. i'll try that.
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Old 01-03-2019, 12:07 PM   #8 (permalink)
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I would actually guess its a cocking rod issue. I noticed on all my trilogies I've built that since the ram is glued where it isn't screwed into the body very far which manifests as the ram no being able to go far enough rear ward to re-cock the marker if your back block is screwed in more than half way to bottoming out. I fixed this by buying hex nut cocking rods and adjusting my cocking rod much further in (actually as far in as they would really go). You could also take the side barb off the ram, break the glue, add an o-ring between the ram and body (keeps ram from unscrewing or moving around) and then snug it to the body.
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Old 01-03-2019, 12:19 PM   #9 (permalink)
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I would actually guess its a cocking rod issue. I noticed on all my trilogies I've built that since the ram is glued where it isn't screwed into the body very far which manifests as the ram no being able to go far enough rear ward to re-cock the marker if your back block is screwed in more than half way to bottoming out. I fixed this by buying hex nut cocking rods and adjusting my cocking rod much further in (actually as far in as they would really go). You could also take the side barb off the ram, break the glue, add an o-ring between the ram and body (keeps ram from unscrewing or moving around) and then snug it to the body.
I'll keep an eye on it, but this is not an issue where the ram is unable to re-set the hammer on the sear. the only thing that moves after the trigger pull is the hammer goes forward and stays put.
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Old 01-04-2019, 02:52 PM   #10 (permalink)
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Lpr adjustment did the trick. Thanks everyone
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