fenboy Posted July 14, 2011 Report Share Posted July 14, 2011 Can anyone tell me which is the best product for getting rid of the hard carbon deposits in the piston assembly ? I dont feel its as clean as it could be and I know it can lead to jamming problems if it builds up too much. Quote Link to comment Share on other sites More sharing options...
Tam Posted July 14, 2011 Report Share Posted July 14, 2011 Cleaning, cleaning it's a Beretta you have not a Hatstand :look: :lol: Quote Link to comment Share on other sites More sharing options...
scottnjeep Posted July 14, 2011 Report Share Posted July 14, 2011 uSE A PAN SCOURER,OR WIRE BRUSH I USE A SUEDE CLEANER ,BRASS BRISTLES.IF ITS REALLY BAKED ON N U R FRIGHTENED TO SCRAPE?.GET SOME MOTOR BIKE DE-COKE LIQUID.SOAK A PATCH IN IT,RAP ROUND OBJECT NEEDING CARBON REMOVING.N WAIT FOR IT TO SOFTEN DEPOSITS.ETC.HOPE THAT HELPS. Quote Link to comment Share on other sites More sharing options...
Paul223 Posted July 14, 2011 Report Share Posted July 14, 2011 at the very worst for baked on stuff - motorist shop, can of carb cleaner Quote Link to comment Share on other sites More sharing options...
barney 66 Posted July 14, 2011 Report Share Posted July 14, 2011 clean mine in vinegar/water mix leave to soak for a while and it wipes off,any remainder comes off easily with napier gun cleaner spray,evry few months i polish it with autosol,it seams to stay cleaner for longer, hope this helps,its worked for me for the last 41/2 years never had a single jam Quote Link to comment Share on other sites More sharing options...
VicW Posted July 15, 2011 Report Share Posted July 15, 2011 Brake cleaner used to work for me. The piston will look just as dirty fifty shells after you clean it and will work without cleaning for a long time. The piston chamber is harder to clean than the piston itself and again I found brake cleaner very good. Vic. Quote Link to comment Share on other sites More sharing options...
Robin128 Posted July 15, 2011 Report Share Posted July 15, 2011 (edited) PH 008 and Forest Foam. Scrape it all out gently with a blunt knife. Use a darning needle to clear the crud from the holes encircling the back of where the piston runs and the 2 holes into the barrel (I have Xtrema2) Likewise remove the piston ring gently and clean to shinny metal with above solutions. There is a plastic O ring behind the edge half way up...don't damage it. Be sure the build up of black crud inside where the piston travels is clear...nothing should remain, otherwise you get feed jams and no last round hold open. Don't oil it...it burns to crud first shot...it will not rust in there if you keep it dry. Clean the trigger group with a gentle air line...do not oil. The carrier is easy to release with a cloth over the cocking lever and a pliars...pull out whilst moving the slide about 1/8th inch. Clean all inside surfafces of the receiver. Don't forget to give the barrel bore a good scrub with a piece of green plastic scouring material from under the sink...just rap a piece around the bronze and give it a good scrub...no problem with chrome bore. HTH Edited July 15, 2011 by Robin128 Quote Link to comment Share on other sites More sharing options...
boneheaduk Posted July 15, 2011 Report Share Posted July 15, 2011 From the topic, I thought berretas cleaned themselves Quote Link to comment Share on other sites More sharing options...
fenboy Posted July 15, 2011 Author Report Share Posted July 15, 2011 Thanks for all the tips ,its not too bad and I am sure it will be ok for a long while yet but I like things to shine clean I must admit i have just tried to wipe most of it out with a oily rag but sounds like that may make it worse ! Quote Link to comment Share on other sites More sharing options...
Dekers Posted July 16, 2011 Report Share Posted July 16, 2011 Can anyone tell me which is the best product for getting rid of the hard carbon deposits in the piston assembly ? I dont feel its as clean as it could be and I know it can lead to jamming problems if it builds up too much. I find the flat Plastic pan scourers with solvent useful, you can also cut them easily to useful sizes/shapes, not tried the metal (Brillo) types! Quote Link to comment Share on other sites More sharing options...
activeviii Posted July 16, 2011 Report Share Posted July 16, 2011 I on;y deep clean my 2 when i start getting soft strikes. i just put the small parts in the ultrasonic. water/vinegar/fairy take out and spray with WD40 then blow off with compressed air, a light oil on moving parts. quick clean on the bore and a scrub if needed. wipe over with damp cloth and then an oil cloth. Quote Link to comment Share on other sites More sharing options...
88b Posted July 17, 2011 Report Share Posted July 17, 2011 I've got a 301 so it's a bit different from a 391 but for the last 30 years I've used the same process. Clean soft rag, WD40 and a six inch length of 1/8" brazing rod with a flat on one end. The rod is perfect for cleaning out the piston and the other end pushes out the pin holding the trigger assy. Spray everything in WD 40 clean respray and reassemble. While I'm holding this big lump of wood , it's never let me down or failed to cycle and I'll never sell it. Quote Link to comment Share on other sites More sharing options...
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