Saturday, November 12, 2011

Pictorial: C4 Trigger Mechanism Maintenance , by Claudio Araujo Part 2



Step 5:
Remove pin that holds the trigger and it's spring to the case. These components will slide right out. Then remove the main spring from the case by sliding the last pin.

Step 6: Clean all of the components with a brush and the a grease solvent. I used Liftoff Adhesive/Grease/Oily Stains Remover bought from Home Depot.

Below is the photo of the components already cleaned and ready for re-greasing and reassembly:



 

Here is a closer look at the polished main component. One word to describe how it feels in my hand... solid.





Below is another photo where you see the in the wheel bearing that interacts with the trigger (by my thumb)... another reason why the mechanism is so smooth.





Below is a photo of the main trigger component lubed with a fresh coat of white Lithium grease (also bought from Home Depot):






Step 7: Reassemble the mechanism in reverse order. Main spring goes first, its pin, then trigger spring and trigger and their pin.




Then, lift the main spring again to slide the main mechanism back in place and attach its pin. Because it will be under tension from the main spring, you will need to wiggle it around until it is in the exact position for the last pin to go in.




Below is a photo of the reassembled mechanism. One important note, very little if any grease is needed around the springs of the mechanism. Too much grease will interfere with the trigger action and make it feel sluggish.




Another close-up of reassembled mechanism (this one with springs free from too much grease

 



From here on all that is to lube the sides of the assembled case, slide it to the slot in the gun (some light tapping with the wood handle of a hammer may be needed) and screw it in place.


again Big Thanks to Claudio for sharring with the readers of the Underground Waterman.

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