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Old November 17th, 2010, 16:02   #9
Kos-Mos
 
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Join Date: Nov 2005
Location: LĂ©vis (QC)
You might want to open you gearbox now.

Check the guides on mechbox.com about it...

The grinding noise is a very good sign that you broke something, especially since it started after about 10 shots.

If I had to take a guess, I would say bevel gear is broken or piston is stripped.
Most bevels are made of two pieces, and theses can be broken free of each other. The result is a grinding noise when firing... Piston is almost always stripped when you plug the nozzle, either with a BB jammed in the barrel or with your finger.

You really should change any part that you damaged. If it makes a noise, it is not normal and changing a 10$ part right now might prevent a 80$ part from breaking.

First time I opened a mechbox, I broke a tappet plate (It was a P90 an the tappet plate can be stuck on the bushing in certain conditions... I broke mine). It sucked but I learned a lot since then and now am offering gun doc to people in my area. Who knows, maybe you will discover a talent for theses things.
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