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Old 10-14-2012, 11:04 PM   #41 (permalink)
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Do you have any ideas on whats wrong?
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Old 10-14-2012, 11:17 PM   #42 (permalink)
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Hold on a second. You guys actually have phantoms that move the handle forward after cocking it back? All the phantoms I've ever owned required me to move the pump handle to the forward position manually. Return spring or not, I've never seen a phantom automatically move the pump handle completely forward.

edit: My mistake, just realized this was for an undercocking kit that I haven't owned, I can't really provide any input as to that particular undercocker.
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Old 10-15-2012, 12:52 AM   #43 (permalink)
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Yes it quite possible to have a phantom without a undercocking kit that doesn't require you to manually cock it back. My friend has one.
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Old 10-15-2012, 03:25 AM   #44 (permalink)
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Assuming the pump arm is correctly seated in the bolt and the internals aren't binding - you might check that the nut on the pump arm (which is missing in the photos you posted so far) is snug against the pump handle and that the pump arm can only move slightly side-to-side in the slot in the grip frame (ie it's not the pump arm binding).

The pump arm nut, when tightened against the pump handle, prevents rolling of the pump handle and keeps the pump arm moving in a straighter (and smoother) line.
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Old 10-15-2012, 02:12 PM   #45 (permalink)
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The nut is on there, those pictures are not up to date. The nut is also tightened against the pump handle.
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Old 10-15-2012, 06:45 PM   #46 (permalink)
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How old is it? I've had my Phantom 4 years now (I think) and it has definitely become smoother as it has broken in.

The last thing I can think of that might be causing you trouble is the smoothness of the pump handle on the pump rod. I had a Wevo undercocking kit (same as the CCI kit) that was a bit rough and ended up taking some fine sand paper to smooth out the inside of the pump arm. Try taking the pump kit off the marker and seeing how smooth the handle moves on the mounting block. If you feel it chattering a bit, you might be able to smooth that out.

Other than that, and the rest of the advice in this thread, you could keep using your phantom and breaking it in, or maybe move on to another marker that known to have a smoother pump stroke (ie a Carter machine, a Retro 7, a Sniper, or a Sterling).
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Old 10-15-2012, 11:42 PM   #47 (permalink)
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I purchased my phantom used, so I have no idea how old it is. The pump rod is smooth so it can't be that causing the issue.
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Old 10-15-2012, 11:50 PM   #48 (permalink)
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Fixed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!

Quick fix, just turned up the velocity a little bit, and now it works like a charm!

Last edited by Aw1195; 10-16-2012 at 12:07 AM.
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Old 10-16-2012, 02:03 AM   #49 (permalink)
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Quick fix, just turned up the velocity a little bit, and now it works like a charm!
Turning the TPC clockwise-> increasing the strength of the mainspring-> turning up the velocity->
Yea, I would say this supports my theory that the springs inside the breech are the main driving force of returning the pump.
You could also try using the RED mainspring (that is the strongest spring).

Last edited by m1yeh; 10-16-2012 at 02:04 AM. Reason: I accidentally a word
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Old 11-06-2012, 03:44 AM   #50 (permalink)
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CCI makes an undercocking kit!?!>>!>!!>!>!??!>!!>!?

I really have been out of this for a while
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