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Old July 27th, 2015, 22:36   #1
Kingpin665
 
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Join Date: Jul 2006
Location: Brantford, ON
ISC SIG Gearbox issue

I hope the video does justice to your ability to diagnose the issue, but a friend of mine has had this gun for over a year and it was working just fine. Never opened the gearbox, and one day it stopped firing, has a higher pitch wine, no air puffs out, gears don't seem to be stripped (I opened it up). What's the problem?

Being to tired to open it up again, I'm thinking it might be stripped plastic teeth on the piston? I'm sure the gear timing is all kinda of messed up but I wasn't concerned about it when I put the gearbox back together, which is why I'm sure it's not firing the same every time I pull the trigger.

Thoughts???

Thanks in advance, been years since I worked on gearboxes.

https://youtu.be/f8rCGnfc23M
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