Chainsaw Repair

Chain - Grinders - Filing - Wood Milling - Tools - Welding - Machinist - Mowers - Tillers => Tool Shed => Topic started by: 1manband on September 20, 2014, 06:09:47 pm

Title: cleaning pistons.....
Post by: 1manband on September 20, 2014, 06:09:47 pm

how do you guys do it?

used to do it with glass beading....(just found out this is not good).

-joe

Title: Re: cleaning pistons.....
Post by: 660magnum on September 20, 2014, 07:53:46 pm

I wipe them off with a rag soaked in mineral spirits or penetrator. If there is some heavily crusted build up on top I may hit it with a putty knife first.

Title: Re: cleaning pistons.....
Post by: aclarke on September 20, 2014, 08:32:04 pm

Soak em overnight in Simple Green. Works great and no caustic crap to breath

Title: Re: cleaning pistons.....
Post by: Cut4fun . on September 20, 2014, 11:34:48 pm

Just wondering something. Never tried it. But I have a brass cleaner tumbler for reloading. I wonder what  a piston would be like in one?  It just vibrates and rotates them around.

Cant remember if I user walnut media in tumbler or what, been awhile.

Good idea on simple green I still havent used the stuff to know.

Title: Re: cleaning pistons.....
Post by: Al Smith on September 24, 2014, 12:44:08 pm

I usually give them a soaking in a coffee can full of kerosine for a day then brush the crud off .Several I put in a coffee can.metal not plastic with strong detergent and water and boiled it on the gas grill .Works but it's getting hard to find a metal coffee can these days. I doubt if plastic would be a grand plan .

Title: Re: cleaning pistons.....
Post by: aclarke on September 24, 2014, 01:45:22 pm

Kev, be interesting to throw a piston and some dry moly coating along with some shot and see if the impingement from the shot hitting the piston transfers the moly as is done with bullets

Title: Re: cleaning pistons.....
Post by: 660magnum on September 24, 2014, 02:21:56 pm

You might want to use an old pin in the piston to protect the pin bore?

Title: Re: cleaning pistons.....
Post by: aclarke on September 24, 2014, 03:12:03 pm

Be a good idea. Might try it out and see if the moly sticks to the aluminum.  Gotta be better than the moly spray paint on the Chinese  AM pistons!  Lol

Title: Re: cleaning pistons.....
Post by: Cut4fun . on September 24, 2014, 04:27:28 pm

Interesting Adam.  Never done anything with moly and bullets here. Keep us updated.

Title: Re: cleaning pistons.....
Post by: adam32 on September 25, 2014, 04:39:47 pm

The moly for bullets is pretty sticky, it'll even "season" the rifle bore with moly.

I got a bunch of 6mm 115gr D-Tacs to test out that were molyd and since my rifle wasn't going to shoot moly forever I didn't want to shoot them then have to clean it all out so I stuck the bullets in the tumbler and all the moly came off pretty easy. I'm not sure it would stay on a piston for more then a few minutes...???

Title: Re: cleaning pistons.....
Post by: aclarke on September 25, 2014, 08:40:05 pm

Throw a piston in the tumbler with some bullets and see how it coats the piston!!!!